Tuesday, September 24, 2002

Part II

Department of the Interior Fish and Wildlife Service

50 CFR Part 17 Endangered and Threatened Wildlife and ; Critical Designation for Four and Eleven Vernal Pool Plants in and Southern Oregon; Proposed Rule

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DEPARTMENT OF THE INTERIOR If this proposed rule is made final, swales (shallow drainages that carry section 7 of the Act would prohibit water seasonally), and ephemeral Fish and Wildlife Service destruction or adverse modification of freshwater . None are known to critical habitat by any activity funded, occur in riverine waters, marine waters, 50 CFR Part 17 authorized, or carried out by any or other permanent bodies of water. The RIN 1018–AI26 Federal agency. Section 4 of the Act vernal pool habitats of the four vernal requires us to consider economic and pool crustaceans and eleven plants Endangered and Threatened Wildlife other impacts of specifying any addressed in this proposed rule have a and Plants; Critical Habitat particular area as critical habitat. discontinuous distribution west of the Designation for Four Vernal Pool We solicit data and comments from that extends from Crustaceans and Eleven Vernal Pool the public on all aspects of this southern Oregon through California into Plants in California and Southern proposal, including data on the northern Baja California, Mexico Oregon economic and other impacts of the (Holland and Jain 1978, 1988, Eriksen designation. We may revise or further and Belk 1999). AGENCY: Fish and Wildlife Service, refine critical habitat boundaries prior Interior. Vernal pools are a unique kind of to final designation based on habitat and wetland ecosystem. Central to their ACTION: Proposed rule. additional and surveys, distinctive is the fact that they SUMMARY: We, the Fish and Wildlife public comments on the proposed are vernal or ephemeral, occurring Service (Service), propose designation critical habitat rule, the completion and temporarily—typically during the of critical habitat for 4 vernal pool approval of Habitat Conservation Plans spring—and then disappearing until the crustaceans and 11 vernal pool plants (HCPs), and new scientific and next year. They are wet long enough to with a total area being proposed of commercial information, and data be different in character and species approximately 672,920 hectares (ha) concerning potential economic impacts composition from the surrounding (1,662,762 acres (ac)). The proposed from the proposed designation. upland habitats, and yet their prolonged designation of critical habitat is for DATES: We will accept comments from annual dry phase prevents the ( all interested parties until November 25, establishment of species typical of more conservatio) 165,820 ha (409,735 ac), 2002. Public hearing requests must be permanent wetlands. In California, longhorn fairy shrimp (Branchinecta received by November 8, 2002. where extensive areas of vernal pool longiantenna) 40,605 ha (100,333 ac), ADDRESSES: If you wish to comment, habitat developed over long periods of vernal pool fairy shrimp (Branchinecta you may submit your comments and time, unique suites of species specially lynchi) 457,556 ha (1,130,605 ac), and materials concerning this proposal by adapted to the unusual conditions of vernal pool tadpole shrimp ( any one of several methods. vernal pools have evolved. Fish and packardi) 291,370 ha (719,965 ac) 1. You may mail written comments other predators are among the species (collectively referred to as ‘‘vernal pool and information to the Field Supervisor, excluded by vernal pools’ annual crustaceans’’ in the remainder of this Sacramento Fish and Wildlife Office, drying, so vernal pool communities document), and Butte County U.S. Fish and Wildlife Service, 2800 have developed and flourished in the meadowfoam (Limnanthes floccosa ssp. Cottage Way, Room W–2605, absence of many predators. California californica) 16,320 ha (40,326 ac), Sacramento, CA 95825. vernal pools are also renowned for their Contra Costa goldfields ( 2. You may hand deliver written showy displays of wildflowers, conjugens) 14,499 ha (38,297 ac), comments to our Sacramento Fish and blooming in concentric rings about the Hoover’s spurge (Chamaesyce hooveri) Wildlife Office at the address given pools in spring. Centres of Plant 81,744 ha (201,987 ac), succulent (or above. Diversity, a project of the World Wide fleshy) owl’s-clover (Castilleja 3. You may send comments by Fund for Nature (WWF) and IUCN—The campestris ssp. succulenta) 125,217 ha electronic mail (e-mail) to World Conservation Union, has (309,407 ac), Colusa grass ( [email protected]. See the Public identified the vernal pools of California colusana) 132,608 ha (327,670 ac), Comments Solicited section below for and Baja California, Mexico, as a center Greene’s () file format and other information about of plant diversity and endemism in 142,984 ha (353,308 ac), hairy Orcutt electronic filing. North America, and considers them to grass ( pilosa) 65,671 ha Comments and materials received, as be severely threatened (WWF and IUCN (162,272 ac), Sacramento Orcutt grass well as supporting documentation used 2002). () 24,632 ha (60,865 ac), in the preparation of this proposed rule, Many areas in California and portions Orcutt grass will be available for public inspection, of southern Oregon have the () 101,059 ha by appointment, during normal business combination of environmental (249,714 ac), slender Orcutt grass hours at the above address. conditions that favors the development () 71,035 ha (175,524 ac), FOR FURTHER INFORMATION CONTACT: of vernal pools (Keeley and Zedler and Solano grass () Arnold Roessler or Susan Moore, at the 1998). The climate is of a type classified 7,345 ha (18,149 ac) (collectively Sacramento Fish and Wildlife Office as Mediterranean, with a wet season referred to as ‘‘vernal pool plants’’ in the address above (telephone 916/414–6600; when rainfall exceeds evaporation, remainder of this document), pursuant facsimile 916/414–6710). Information filling the pools, and a dry season when to the Act of 1973, regarding this proposal is available in evaporation is greater, drying the pools. as amended (Act). Because many of the alternate formats upon request. Rainfall is relatively meager even in units proposed for different species SUPPLEMENTARY INFORMATION: most wet seasons, so erosion by overlap, the total critical habitat area we overflowing waters does not dissect the are proposing is much less than the sum Background topographic irregularities that form of the areas for each species. The The vernal pool crustaceans and vernal pool basins. Temperatures during proposed units are in 39 counties in plants addressed in this proposed rule the winter-spring wet season are mild, California and one county in southern live in vernal pools (shallow so plants and can grow, mature, Oregon. depressions that hold water seasonally), and reproduce.

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A second major factor in the throughout California’s Central Valley surrounding soils but soil moisture development of vernal pools is soil. and adjacent areas (Holland 1998). remains high; and the dry phase, when Vernal pools form where there is a soil Vernal pools come in a variety of the vernal pool and underlying soils are layer below or at the surface that is shapes and sizes, from a square meter completely dry (Keeley and Zedler impermeable or nearly impermeable to (yard) to a hectare (2.5 ac) or more. 1998). Upland areas associated with water (Smith and Verrill 1998). Some larger vernal wetlands, such as vernal pools are also an important Precipitation and surface runoff become the 36 ha (90 ac) Olcott Lake in the source of nutrients to vernal pool trapped or ‘‘perched’’ above this layer. Jepson Prairie Preserve in Solano organisms (Wetzel 1975). Vernal pool In California, the restrictive soil layers County, are also referred to as vernal habitats derive most of their nutrients underlying vernal pools are of four main lakes or playa pools or lakes. Playa from detritus which is washed into the types—hardpans, claypans, volcanic pools with high alkalinity are termed pool from adjacent uplands, and these flows, and non-volcanic rock. Volcanic alkali sinks. These larger wetlands nutrients provide the foundation for flows include basaltic lavas and contain many of the same animals and vernal pool aquatic communities food cemented mudflows, and are most plants of smaller vernal pools, including chain. Detritus is a primary food source common along the lower western slope many rare and endangered species. for the vernal pool crustaceans of the Sierra Nevada. Hardpans are Since appropriate combinations of addressed in this proposed rule (Eriksen formed by leaching, redeposition, and climate, soil, and topography often and Belk 1999). cementing of silica minerals from high occur over continuous areas rather than Both the amount and timing of in the soil profile to a lower (‘‘B’’) in isolated spots, vernal pools in rainfall in California vary greatly from horizon (Hobson and Dahlgren 1998, California, particularly in the Central year to year. As a result, pools may fill Smith and Verrill 1998). Claypans are Valley, tend to occur in clusters, called to different extents at different times. formed by another redeposition ‘‘complexes.’’ A landscape that supports The duration of ponding of vernal pools process—fine clay particles are a vernal pool complex is typically a also varies, and in certain years some transported to the B horizon and grassland, with areas of obstructed pools may not fill at all. Many accumulate there. Claypans may also be drainage that form the pools. Vernal characteristics of vernal pool plants and augmented by redeposition of saline or pools can also be found in a variety of animals are adaptations to the highly alkaline compounds. Hardpans and other habitats, including woodland, variable and unpredictable nature of claypans both develop gradually over desert, and chaparral. The pools may be vernal pools (Holland 1976, Holland thousands of years, and can be a meter fed or connected by low drainage and Dains 1990, King et al. 1996, Hanes (yard) or more thick. Smith and Verrill pathways called ‘‘swales.’’ Swales are and Stromberg 1998). (1998) list many of the soil series often themselves seasonal wetlands that California’s vernal pools are rich in remain saturated for much of the wet species composition compared to vernal associated with vernal pools in the season, but may not be inundated long pools worldwide and contain many Central Valley. enough to develop strong vernal pool species that are endemic to the region A third factor, related to soil and characteristics. Vernal pool complexes (found nowhere else). In addition, while climate, is topography or relief. Vernal have historically been considered poor most of California’s grasslands are now pools typically occur in landscapes that, farmland, because of their shallow, dominated by non-native grasses and at a broad scale, are shallowly sloping seasonally saturated or inundated and other introduced plants, vernal pools or nearly level, but on a fine scale may sometimes alkaline soils, and their root- remain a haven for native species. be quite bumpy. Complex micro-relief restricting subsurface layer. For the Invasive non-native plants have been results in shallow, undrained same reasons, trees are relatively rare in introduced into California and have so depressions that form vernal pools. most vernal pool complexes. successfully spread and reproduced in Some vernal pool landscapes are dotted California’s vernal pools begin to fill upland habitats that it is not unusual for with numerous, rounded soil mounds, with the fall and winter rains. Before non-natives to account for a third of the referred to as mima mounds, after the ponding occurs, there is a period during species and more than 90 percent of the well-developed mounds of the Mima which the soil is wetted and the local biomass in a California grassland. Prairie in Thurston County, Washington water table may rise. Some pools have Vernal pools have dramatically resisted (Scheffer 1947). Scientists still argue a substantial watershed that contributes this invasion with 75 to 95 percent of about the origins of these mounds, to their water inputs; others may fill plant species found in vernal pools which have been attributed to forces as almost entirely from rain falling directly being native; and natives dominate in disparate as gophers acting over into the pool (Hanes and Stromberg biomass as well as number (Holland and millennia (Scheffer 1947, Cox and 1998). Although exceptions are not Jain 1978, Jokerst 1990, Spencer and Gakahu 1983) and the pressures of soil uncommon, the watershed generally Rieseberg 1998). Vernal pool swelling and shrinkage during wetting contributes more to the filling of larger communities dominated by natives and drying cycles (Hallsworth et al. or deeper pools, especially playa pools. persist even though they are surrounded 1955, Hobson and Dahlgren 1998)—as Even in pools filled primarily by direct by seas of grassland raining the seed of well as other hypotheses, many much precipitation, Hanes and Stromberg non-native plants. Vernal pool plant less plausible. Focusing on the troughs (1998) report that subsurface inflows communities are able to resist invasion rather than the mounds, Californians from surrounding soils can help because of the severe ecological long referred to vernal pools as ‘‘hog dampen water level fluctuations during constraints on plants living in vernal wallows,’’ but unlike the buffalo late winter and early spring. Vernal pool environments. wallows of the Great Plains, these pools exhibit four major phases—the The animal communities that live in wetlands have little to do with hogs or wetting phase, when vernal pool soils vernal pools also contain diverse groups wallowing. From the air, vernal pool become saturated; the aquatic phase, of highly specialized species. The landscapes often show characteristic when a perched water table develops freshwater communities of patterning, produced by plant responses and the vernal pool contains water; a vernal pools are particularly well to mound and trough micro-relief. This water-logged drying phase, when the developed (Simovich 1998). The most patterning has allowed detailed vernal pool begins loses water as a visible crustaceans in vernal pools are mapping of vernal pool habitats result of evaporation and loss to the the large branchiopods (literally, ‘‘gill-

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foots’’), about 27 species in California, predators include insects such as erosion and deposition, and include of which perhaps 10 are endemic (Helm backswimmers (Family Notonectidae) features such as alluvial terraces and 1998, Belk and Fugate 2000) and 6 are (Woodward and Kiesecker 1994), basins; and volcanic mudflows and lava federally listed as threatened or predaceous diving beetles and their flows. endangered. The large branchiopods are larvae (Family Dystictidae), and The types and kinds of species that easily visible to the naked eye, ranging dragonflies and damselfly larvae (Order are found in vernal pools are largely up to 5 centimeters (cm) (2 inches (in)) Odonate). Vernal pool tadpole shrimp determined by these physical factors, in length, depending on the species. are another significant predator of fairy including pool size, depth, area, and They include the fairy shrimps shrimp. water and soil chemistry (Holland and (), tadpole shrimps The plants, invertebrate and Griggs 1976, Zedler 1987, Holland and (), and clam shrimps vertebrate animals of vernal pools, and Dains 1990, Eng et al. 1990, Simovich (Conchostraca). Smaller crustaceans that vernal pool landscapes in general, are 1998). The physical characteristics of are common in California vernal pools, important providers of food and habitat the vernal pool influences the life many large enough to see without for waterfowl, shorebirds, wading , history characteristics of vernal pool magnification, are water fleas toads, frogs, and salamanders (Proctor et species, such as the speed with which (—Cladocera), copepods al. 1967, Krapu 1974, Swanson 1974, a species can mature and reproduce, the (Copepoda), and seed shrimp Morin 1987, Simovich et al. 1991, amount of soil moisture required for (Ostracoda). Silveira 1996). There is evidence that of plant seeds or hatching Amphibians and many insect species vernal pool crustaceans were used as a of invertebrate eggs or cysts, as well as also live in vernal pools. The Pacific food source for Native Americans in tolerance to turbidity, total dissolved tree frog (chorus frog) (Hyla (Pseudacris) California’s Central Valley (Silveira solids, and other aspects of vernal pool regilla) and western toad (Bufo boreas) 1998). During the spring, waterfowl feed water chemistry. are common and abundant in and on vernal pool crustaceans and other Sawyer and Keeler-Wolf (1995) around vernal pools. Two rarer invertebrates, which are sources of classified vernal pools according to a amphibians native to vernal pools are protein and calcium needed for number of physical, geographic, and the California tiger salamander migration and egg-laying (Proctor et al. biological characteristics. They (Ambystoma californiense) and the 1967, Silveira 1998). Vernal pool identified several general vernal pool western spadefoot toad (Scaphiopus complexes contribute to continuity of types which correspond to the nature of (Spea) hammondii) (Morey 1998). While wetland habitats along the Pacific the impermeable layer that underlay the dispersing bullfrogs (Rana catesbeiana), Flyway (a major migration route). vernal pool and assisted the pool to which are not native to California, are Many species feed or nest near vernal form. The vernal pools were identified sometimes found in vernal pools, they pools, for example, cliff swallows as Northern Hardpan, Northern do not successfully breed there because (Hirundo fulva) glean mud from vernal Claypan, Northern Basalt Flow, bullfrog tadpoles require two years to pool beds for their nests, lesser Northern Volcanic Mudflow, and mature and cannot survive the dry nighthawks (Chordeiles acutipennis) Northern Ashflow vernal pools. season. These voracious introduced nest in dry vernal pool beds, burrowing Northern Hardpan vernal pools are predators will sometimes be found owl (Athene cunicularia) and gopher generally formed on alluvial terraces resting and feeding in vernal pools close (Thomomys sp.) burrows are found in with silicate-cement soil layers. These to more permanent water, frequently mima mounds, and many species graze pool types are generally on acidic soils, associated with human modifications of or hunt along vernal pool shorelines. and exhibit well developed mima the landscape. Fish likewise do not Before their populations were nearly mound topography found on the eastern inhabit vernal pools, except where eliminated by hunting and habitat margins of the Central Valley. Northern temporarily introduced by humans (e.g., alteration, elk (Cervus sp.) and Claypan vernal pools are generally mosquitofish (Gambusia sp.)) or by pronghorn antelope (Antilocarpa formed on impermeable surfaces created flooding of permanent waters. americana) undoubtedly grazed vernal by an accumulation of clay particles. The insect fauna of vernal pools is pool landscapes, and have been These pool types are often found on numerous, varied and primarily native, replaced by cattle. Fishing net weights basin and basin rim landforms and tend including aquatic beetles (Coleoptera— found near vernal pools suggests that to occur in the central portion of the Dytiscidae, Hydrophilidae, Gyrinidae, California’s first human populations Central Valley and tend to be alkaline. Halipidae, Hydraenidae), aquatic bugs, also made use of vernal pool resources, Vernal pools identified as Northern including backswimmers (Hemiptera— as do hunters today (Silveira 1998). Volcanic Mudflow, Northern Basalt Notonectidae), water boatmen Flow, and Northern Volcanic Ashflow, Classification of Vernal Pools (Corixidae), and water striders are generally formed by an impervious (Gerridae), springtails (Collembola), The variability of vernal pool types bedrock layer of volcanic origin. These mayflies (Ephemeroptera), dragonflies has led many researchers to try and pool types are found on the eastern and and damselflies (Odonata), and various classify these ephemeral habitats. (i.e., coastal portions of the Central Valley, flies with aquatic larvae, including Holland (1986), Sawyer and Keeler-Wolf and tend to be small and restricted in midges (Diptera—Chironomidae), crane (1995), Ferren et al. (1996), Smith and distribution. Northern Basalt Flow flies (Tipulidae) and mosquitoes Verrill (1998)). Most of these efforts vernal pools occur at greater elevations (Culicidae). Rogers (1998) found that have focused on classifying vernal pools than other vernal pool types. mosquitoes generally made up less than based on the factors that influence 2 percent of the total macroscopic variation in their physical features. Vernal Pool Crustaceans Background invertebrate population in natural and Primary physical features that influence Conservancy fairy shrimp two-year old constructed pools— vernal pool size, depth, and soil and (Branchinecta conservatio), longhorn perhaps because many of the other water chemistry include soil type, fairy shrimp (Branchinecta insects listed above are predators. geologic formation, and landform. longiantenna), and vernal pool fairy Vernal pool crustaceans are an Landforms are physical attributes of the shrimp (Branchinecta lynchi) are important food source for a number of landscape resulting from members of the aquatic crustacean order aquatic and terrestrial species. Aquatic geomorphological processes such as Anostraca. Vernal pool tadpole shrimp

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(Lepidurus packardi) is a member of the and other objects on the pool bottom. factors such as soil moisture, aquatic crustacean order Notostraca. Like fairy shrimp, vernal pool tadpole temperature, light, oxygen, and osmotic Vernal pool fairy shrimp are found in shrimp pass the summer months as pressure may trigger the embryo’s California and southern Oregon while dormant cysts in the soil. Some of the emergence from the cyst (Brendonck the other three shrimp species are found cysts hatch as the vernal pools are filled 1996). Because the cyst contains a well only in California. These species have with rainwater in the next or subsequent developed embryo, the animal can all evolved similar adaptations to the seasons, while other cysts may remain quickly develop into a fully mature unique habitat conditions of their vernal dormant in the soil for many years. adult. This allows vernal pool pool habitats. The general appearance When winter rains refill inhabited crustaceans to reproduce before the and life history characteristics of these pools, tadpole shrimp reestablish from vernal pool enters the dry phase, four species will be described in dormant cysts and may become sexually sometimes within only a few weeks combination below. mature within three to four weeks after (Helm 1998, Eriksen and Belk 1999). In Longhorn fairy shrimp, vernal pool hatching (Ahl 1991, Helm 1998). Mature some species, cysts may hatch fairy shrimp, and Conservancy fairy adults may be present in pools until the immediately without going through a shrimp (fairy shrimp) have delicate habitats dry up in the spring (Ahl 1991, dormant stage, if they are deposited elongate bodies, large stalked compound Gallagher 1996). while the vernal pool still contains eyes, and 11 pairs of phyllopods, or gill- All of the vernal pool crustacean water. These cysts are referred to as like structures that also serve as legs. species addressed in this proposed quiescent, and allow the vernal pool They swim or glide gracefully upside critical habitat designation have evolved crustacean to produce multiple down by means of complex beating unique physical adaptations to survive generations in a single wet season as movements that pass in a wave-like in vernal pools. The timing and long as their habitat remains inundated. anterior to posterior direction. Fairy duration of wet and dry phases can vary Another important adaptation of shrimp are filter feeders, and consume significantly from year to year, and in vernal pool crustaceans to the algae, , , , and some years vernal pools may not unpredictable conditions of vernal pools bits of detritus as they move through the inundate at all. In order to take is the fact that not all of the dormant water. The second pair of antennae in advantage of the short inundation cysts hatch in every season. Simovich fairy shrimp adult males are greatly phase, vernal pool crustaceans have and Hathaway (1997) found that only 6 enlarged and specialized for clasping evolved short reproduction times and percent of San Diego fairy shrimp cysts the females during copulation. The high reproductive rates. Most of the hatched after initial hydration, and only females carry eggs in an oval or elongate species addressed in this proposed rule 0.18 percent of Riverside fairy shrimp ventral sac (brood sac). Once fertilized, hatch within a few days after their cysts hatched. The cysts that don’t hatch the eggs are coated with a protective habitats fill with water, and can start remain dormant and viable in the soil. protein layer that allows them to reproducing within a few weeks (Eng et These cysts may hatch in a subsequent withstand heat, cold, and prolonged al. 1990, Helm 1998, Eriksen and Belk year, and form a cyst bank much like the dehydration. The fully developed eggs 1999). Vernal pool crustaceans can seed bank of annual plants. The cyst are either dropped to the pool bottom or complete their entire life cycle in a bank may be comprised of cysts from remain in the brood sac until the female single season, and some species may several years of breeding, and large cyst dies and sinks. These dormant eggs are complete several life cycles. Vernal pool banks of viable resting eggs in the soil also known as cysts, and they can crustaceans can also produce thousands of vernal pools containing fairy shrimp remain viable in the soil for decades viable cysts when environmental have been well documented (Belk 1998). after deposition (Eriksen and Belk, conditions are favorable. Based on a review of other studies (e.g., 1999). When the pools refill in the same To survive the prolonged heat and Belk 1977, Gallagher 1996, Brendonck or subsequent seasons, some, but not all, dessication of the vernal pool dry phase, 1996), Simovich and Hathaway (1997) of the cysts may hatch (Eriksen and vernal pool crustaceans have developed concluded that species inhabiting more Belk, 1999). The cyst bank in the soil a dormant stage. After vernal pool unpredictable environments, such as may consist of cysts from several years crustacean eggs are fertilized in the smaller or shorter lived pools, are more of breeding. The cysts that hatch may do female’s brood sac, the embryos develop likely to have a smaller percent of their so within days after the vernal pools fill, a thick, usually multi-layered shell. cysts hatch after their vernal pool and rapidly develop into adults within When embryonic development reaches a habitats fill with water. This strategy weeks. In pools that persist for several late stage, further maturation stops, reduces the probability of complete weeks to a few months, fairy shrimp metabolism is drastically slowed, and reproductive failure if a vernal pool may have multiple hatches during a the egg, now referred to as a cyst, enters dries up prematurely. This kind of ‘‘bet- single season. a dormant state called diapause. The hedging strategy’’ has been suggested as Vernal pool tadpole shrimp have cyst is then either dropped to the pool a mechanism by which rare species may dorsal compound eyes, a large shield- bottom or remains in the brood sac until persist in unpredictable environments like carapace (shell) that covers most of the female dies and sinks. Once the cyst (Chesson and Warner 1981, Chesson their body and a pair of long cercopods is desiccated, it can withstand and Huntly 1989, Ellner and Hairston or appendages at the end of the last temperatures near boiling (Carlisle 1994). abdominal segment. They are primarily 1968), fire (Wells et al. 1997), freezing, Although the vernal pool crustaceans, benthic (living on the bottoms of the and anoxic conditions without damage and particularly the fairy shrimp, pools) animals that swim with their legs to the embryo. The cyst wall cannot be addressed in this proposed rule are not down. Vernal pool tadpole shrimp affected by digestive enzymes, and can often found in the same vernal pool at climb or scramble over objects, and be transported in the digestive tracts of the same time, when coexistence does plow along bottom sediments as they animals without harm (Horne 1967). occur, it is generally in deeper, longer forage for food. Their diet consists of Most fairy shrimp cysts can remain lived pools (Eng et al. 1990, Thiery organic detritus (decaying matter) and viable in the soil for a decade or longer 1991, Gallagher 1996, Simovich 1998). living organisms, such as fairy shrimp (Belk 1998). In larger pools, closely related species of and other invertebrates (Fryer 1987). Although the exact signals that cause fairy shrimp may coexist by hatching at The females deposit eggs on vegetation crustacean cysts to hatch are unknown, different temperatures, and by

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developing at different rates (Thiery northern Butte County; Jepson Prairie in their cylindrical brood pouch, which 1991, Hathaway and Simovich 1996). Solano County; Suisun Slough in extends to below abdominal segments 6 Vernal pool crustacean species may also southern Solano County; Sacramento or 7. Mature males have been measured be able to coexist by utilizing different National Wildlife Refuge in Glenn between 12 and 21 mm (0.5 to 0.8 in) physical portions of the vernal pool, or County; near Caswell Memorial State in length, and females range from 13.3 by eating different food sources (Daborn Park in Stanislaus County; Haystack to 19.8 mm (0.5 to 0.8 in) in length (Eng 1978, Mura 1991, Hamer and Appleton Mountain Area in eastern Merced et al. 1990). 1991, Thiery 1991). County; San Luis National Wildlife Further discussion on the life history The primary historic dispersal Refuge Complex in central Merced and habitat requirements of longhorn mechanisms for the vernal pool County, and the Mutau Flat area in the fairy shrimp can be found in the final crustaceans probably consisted of large Los Padres National Forest area of rule to list this species (59 FR 48136). scale flooding resulting from winter and northern Ventura County. Vernal Pool Fairy Shrimp spring rains, and dispersal by migratory Conservancy fairy shrimp look similar birds. As a result of widespread flood to other fairy shrimp species, but can be Vernal pool fairy shrimp were first control and agricultural water diversion distinguished by characteristics of the described by Eng et al. in 1990 from a projects developed during the twentieth male second antenna. The second type specimen that was collected in century, large scale flooding is no longer antennae of Conservancy fairy shrimp 1982 at Souza Ranch, Contra Costa a major form of dispersal for the vernal males have a distal segment which is County, California. The species occurs pool crustaceans. When being dispersed about 30 percent shorter than the basal in disjunct fragmented habitats by migratory birds, the eggs of these segment, and has a tip bent medially distributed across the Central Valley of crustaceans are either ingested (Krapu about 90 degrees (Eng et al. 1990). The California from Shasta County to Tulare 1974, Swanson 1974, Driver 1981, Ahl female brood pouch is tapered at each County and the central and southern 1991) and/or adhere to the bird’s legs end, typically extends to abdominal coast ranges from northern Solano and feathers where they are transported segment 8, and has a terminal opening County to Ventura County, California. to new habitats. Cysts may also be (Eng et al. 1990). Males may be from 14 Additional disjunct populations have dispersed by a number of other species, to 27 millimeters (mm) (0.6 to 1.1 in) in been identified in southern California such as salamanders, toads, cattle, and length, and females have been measured and in Oregon. In Oregon, the species’ humans (Eriksen and Belk 1999). between 14.5 and 23 mm (0.6 and 0.9 distribution is limited to the vicinity of The vernal pool crustaceans in) long. an approximately 82.9 square kilometer addressed in this proposed rule are Further discussion on the life history (sq km) (32 square mile (sq mi)) area generally confined to habitats that are and habitat requirements of known as the Agate Desert in Jackson low to moderate in alkalinity and Conservancy fairy shrimp can be found County, north of Medford. In southern dissolved salts, when compared with in the final rule to list this species (59 California the distribution is equally other aquatic systems (Ericksen and FR 48136). limited with populations occurring in Belk 1999). Although potentially Longhorn Fairy Shrimp three areas in Riverside County. moderated by soil type, vernal pools are Vernal pool fairy shrimp are generally unbuffered and exhibit wide Longhorn fairy shrimp were first characterized by the presence and size fluctuations in pH and dissolved oxygen collected in 1937, but were not formally of several bulges on the male’s antenna, (Keeley and Zedler 1998). Vernal pool described until 1990 by Eng, Belk, and and by the female’s short, pyriform or water ion concentrations, such as Eriksen. The type specimen was pear shaped, brood pouch. Vernal pool sodium, potassium, calcium, chlorine, collected from a sandstone outcrop pool fairy shrimp vary in size, ranging from and magnesium, also experience large on the Souza Ranch in Contra Costa 11 to 25 mm (0.4 to 1.0 in) in length daily and seasonal variations. These County, California. Longhorn fairy (Eng et al. 1990). variations are due to the concentration shrimp are extremely rare, and are only Vernal pool fairy shrimp are currently of ions due to evaporation, and the known from three widely separated found in 27 counties across the Central dilution of ions with additional rainfall locations; the Altamont Pass area in Valley and coast ranges of California, throughout the wet season (Barclay and Contra Costa and Alameda counties; the inland valleys of southern California, Knight 1981). How vernal pool western and northern boundaries of and southern Oregon. Although vernal crustacean species adapt to these Soda Lake on the Carrizo Plain in San pool fairy shrimp are distributed more fluctuations in water chemistry varies. Luis Obispo County; and Kesterson widely than most other fairy shrimp Definitive conclusion on why the National Wildlife Refuge in the San species, they are generally uncommon species has certain water chemistry Joaquin Valley in Merced County. throughout their range, and rarely habitat preferences is generally Vernal pool crustacean surveys abundant where they do occur (Eng et unknown due to the anecdotal nature of conducted by Sugnet (1993) found only al. 1990, Eriksen and Belk 1999). observations. 3 occurrences of longhorn fairy shrimp Further discussion on the life history Additional information specific to out of 3,092 locations surveyed, and and habitat requirements of vernal pool each of the four individual vernal pool Helm (1998) found occurrences of fairy shrimp can be found in the final crustacean species described in this longhorn fairy shrimp in only 9 of 4,008 rule to list this species (59 FR 48136). proposed rule is provided below. wetlands sampled. Longhorn fairy shrimp are Vernal Pool Tadpole Shrimp Conservancy Fairy Shrimp distinguished from other fairy shrimp Vernal pool tadpole shrimp were Conservancy fairy shrimp were first by the male’s very long second initially described by Simon in 1886, described in 1990 by Eng, Belk, and antennae, which is about twice as long, and named Lepidurus packardi. After Eriksen. The type specimens were relative to its body, as the second subsequent reclassification by collected in 1982 at Olcott Lake, Solano antennae of other species of Longhurst (1955), the species was given County, California. Conservancy fairy Branchinecta. Longhorn fairy shrimp a subspecies status based primarily on shrimp are currently known from only antennae range from 6.7 to 10.4 mm (0.3 the lack of apparent geographic eight disjunct areas—Vina plains and to 0.4 in) in length (Eriksen and Belk boundaries between L. apus and L. vicinity in southern Tehama and 1999). Females can be recognized by packardi populations. Lynch (1972)

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resurrected L. packardi to full species suite of highly specialized adaptations floccosa ssp. californica. The type status based on further examination of which allow them to survive in vernal locality is in Butte County between specimens and this is the currently pool habitats. All eleven species are Chico and Oroville, near the accepted taxonomic status of vernal annuals, meaning they germinate, grow, intersection of state Highway 99 and pool tadpole shrimp. Vernal pool and reproduce within a single year. This Shippee Road (Kalin-Arroyo 1973). tadpole shrimp inhabit sites in allows the vernal pool plants to Butte County meadowfoam is a small California’s Central Valley and San complete their life cycles during the annual of the meadowfoam or false Francisco Bay area. The geographic relatively short inundation and drying mermaid family (Limnanthaceae). It has range of this species includes disjunct periods of their vernal pool habitat. erect stems less than 25 cm (9.8 in) tall. populations found in the Central Valley Another adaptation of vernal pool The stem and are densely from Shasta County to northern Tulare plants is production of dormant seeds. pubescent (covered with short hairs). County and in the central coast range This adaptation allows vernal pool The alternate leaves are pinnately from Solano County to Alameda County. plants to survive the hot summer compound (divided into distinct Vernal pool tadpole shrimp are months in the soil. The seeds may segments which are arranged featherlike distinguished by a large, shield-like remain viable in the soil for many years. on either side of a rachis), up to 8 cm carapace, or shell, that covers the The number of plants present above (3.1 in) long, and consist of five to anterior half of their body. Vernal pool ground may fluctuate dramatically from eleven leaflets on a long petiole. A tadpole shrimp have 30 to 35 pairs of year to year. However, much of the single flower arises in the axil (angle phyllopods, a segmented abdomen, population of these species exists as between the base of a and the stem) paired cercopods or tail-like seeds in the soil. Vernal pool plant of each upper leaf. The flowers are appendages, and fused eyes. Vernal pool seeds generally germinate after winter white with yellow veins, cup or bowl- tadpole shrimp will continue to grow as rains in response to a complex set of shaped, and consist of five , five long as their vernal pool habitats remain environmental cues that are not well sepals, five pistils (female reproductive inundated, in some cases for six months understood, but that generally include structures of a flower), and ten or longer. They periodically shed their temperature and soil moisture. Specific (male reproductive structures of a shells, which can often be found along germination cues differ greatly among flower) on a long flower stalk (Kalin- the edges of vernal pools where vernal species and are discussed in more detail Arroyo 1973, McNeill and Brown 1979, pool tadpole shrimp occur. Mature in the individual species descriptions Ornduff 1993b). vernal pool tadpole shrimp range in size below. Not all of the dormant seeds will Butte County meadowfoam seedlings from 15 to 86 mm (0.6 to 3.4 in) in germinate in any given year. This can tolerate short periods of length. strategy reduces the probability of local submergence (Jokerst 1989, Dole and Vernal pool tadpole shrimp have extirpation if environmental conditions Sun 1992). The seedlings develop into relatively high reproductive rates. Ahl change, for example if a vernal pool rosettes (clusters of leaves near the (1991) found that fecundity increases dries up prematurely. This kind of ‘‘bet- ground), which do not begin producing with body size. Large females, greater hedging strategy’’ has been suggested as flowering stems immediately (McNeill than 20 mm (0.8 in) carapace length, a mechanism by which rare species may and Brown 1979, Ritland and Jain 1984). could deposit as many as 6 clutches, persist in unpredictable environments Butte County meadowfoam typically averaging 32 to 61 eggs per clutch, in a (Chesson and Warner 1981, Chesson begins flowering in February, reaches single wet season. and Huntly 1989, Ellner and Hairston peak flowering in March, and may Further discussion on the life history 1994). continue into April if conditions are and habitat requirements of vernal pool Tolerance to inundation differs suitable. Nutlets are produced in March tadpole shrimp can be found in the final greatly among species (Zedler 1987). and April, and the plants die back by rule to list this species (59 FR 48136). The zonation of vernal pool plants early May (Jokerst 1989, Dole and Sun The habitat of the four vernal pool which forms the characteristic rings of 1992). crustaceans is imperiled by a variety of flowers around vernal pools is a result Butte County meadowfoam is activities, primarily by urban of this differential tolerance to predominantly self fertilized (Dole and development, water supply and flood inundation. Species that are the least Sun 1992). Nutlets of Butte County control activities, and conversion of tolerant to inundation grow along the meadowfoam apparently are dispersed land to agricultural use. Habitat loss margins of the pool, while those that by water; they can remain afloat for up occurs from direct destruction and can tolerate extended periods of to 3 days (Hauptli et al. 1978). modification of pools due to filling, inundation grow in the center of the Limnanthes taxa that grow in wet sites grading, discing, leveling, and other pools. have larger tubercles than those adapted activities, as well as modification of Information on the appearance and to dry sites. Hauptli et al. (1978) surrounding uplands. Vernal pool life history of each of the eleven speculated that the tuberculate surface crustaceans and their habitat also are individual vernal pool plant species of such nutlets may aid in flotation by threatened by altered flood regimes, described in this proposed rule is trapping air. However, most degraded water quality, siltation, provided below. meadowfoam nutlets are dispersed only erosion, grazing, improper burning, short distances. Thus, Butte County Butte County Meadowfoam military operations, off-road vehicles, meadowfoam nutlets would not be pollution, vandalism, road and trail Butte County meadowfoam expected to disperse beyond their pool maintenance, and introduction of non- (Limnanthes floccosa ssp. californica) or swale of origin. Birds and livestock native predators. Further discussion on was first collected in 1917 at a site 16 are potential sources of long-distance threats to the vernal pool crustaceans kilometers (km) (10 mi)) north of Chico seed dispersal, but specific instances of can be found in the final rule to list (Service 1991b), although it was dispersal have not been documented these species (59 FR 48136). recognized as a separate subspecies at (Jain 1978). that time. Kalin-Arroyo (1973) Butte County meadowfoam has Vernal Pool Plants Background determined that Butte County always been confined to the Butte The vernal pool plants described in meadowfoam was a distinct taxon and County (Keeler-Wolf et al. 1998). In her this proposed rule have developed a gave it the scientific name Limnanthes original description, Kalin-Arroyo

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(1973) mentioned six collections, County meadowfoam occurs primarily original name and rank, returning this including the type locality. Five of those in vernal swales and to a lesser extent species to the Lasthenia. ranged from the original collection site on the margins of vernal pools (Kalin- Contra Costa goldfields is a showy southeast to Oroville, and the sixth was Arroyo 1973, Dole 1988, Jokerst 1989, spring annual in the aster family from Table Mountain north of Oroville. BioSystems Analysis, Inc. 1993, CNDDB (). Its stems are 10 to 30 cm However, Jokerst (1983) did not find 2001). Swales vary in width from (4 to 12 in) tall, somewhat fleshy, and Butte County meadowfoam on Table narrow channels to broad, pool-like usually are branched. The leaves are Mountain and later suggested that the areas (LSA Associates, Inc. 1994). They opposite and narrow; the lower leaves specimen had been misidentified may connect in branching, tree-like are entire, but stem leaves have one or (Service 1992a). patterns or in net-like patterns around two pairs of narrow lobes. The daisy- All 13 of the occurrences described by low mounds. Occupied swales are like flower heads are solitary (Greene the CNDDB (2001) had been reported by inundated periodically by water from 1888, Ornduff 1993a). 1988 (Kalin-Arroyo 1973, McNeill and the surrounding uplands, causing the As a vernal pool annual, seeds of Brown 1979, Dole 1988, Jokerst 1989). soil to become saturated. However, Contra Costa goldfields would be Five were in northern and northeastern Butte County meadowfoam does not expected to germinate in response to Chico near the municipal airport, four persist in pools or swales that are autumn rains, with the plants maturing (including the type locality) were from inundated for prolonged periods or in a single growing season, setting seed, the area around Shippee (northwest of remain wet during the summer months, and dying back during the summer. Oroville), and three from southeastern nor in drainages where water flows However, detailed research on the life Chico. The other occurrence, northeast swiftly (Jokerst 1989, Kelley and cycle has not been conducted. Contra of the town of Nord, contained only one Associates Environmental Sciences Costa goldfields flower from March plant that was of questionable identity 1993). BioSystems Analysis Inc. (1993) through June (Ornduff 1966, Ornduff (CNDDB 2001). However, the area only found it in the wettest swales in 1979, Skinner and Pavlik 1994). The indicated would be in the same vicinity 1992 during the drought. Occupied flowers are self-incompatible (Crawford as the 1917 collection. swales are less than 10 cm (3.9 in) deep and Ornduff 1989). Insect visitors to Jokerst (1989) identified ‘‘north’’ and (LSA Associates, Inc. 1994) and pools flowers of Lasthenia belong to five ‘‘south’’ races of Butte County are typically less than 30 m (100 ft) long orders—Coleoptera, Diptera, Hemiptera meadowfoam in the Chico ‘‘sphere of (Jokerst 1989). In both swales and pools, (true bugs), Hymenoptera (ants, bees influence’’ based on morphology. Later, Butte County meadowfoam may grow and wasps), and Lepidoptera (butterflies in studies of enzyme systems, Dole and along the edges or in the bottom (Kalin- and moths) (Thorp and Leong 1998). Sun (1992) confirmed that these races Arroyo 1973, Jokerst 1989). In a study of Most of these insects are generalist differed genetically. They also identified the Shippee area population . Some Lasthenia are genetically distinct races that they (BioSystems Analysis, Inc. 1993) Butte pollinated by specialist solitary bees called ‘‘northeast’’ and ‘‘southwest,’’ County meadowfoam was found (family Andrenidae); including two bee with the latter referring to the type growing more often on pool margins species in the subgenus Diandrena locality. They found that 96 percent of than in the bottom of pools but the ( submoesta and A. puthua) genetic diversity in Butte County pattern was reversed in swales, with the and five or six species in the subgenus meadowfoam existed among plants more often growing in the center. Hesperandrena (Andrena baeriae, A. populations and that little variability It typically occurs in long, narrow bands duboisi, A. lativentris, and two or three was evident within populations. Dole in connected swales or on pool margins undescribed species) (Thorp and Leong and Sun (1992) used mathematical but can be found in irregular clusters in 1998). The extent to which pollination formulas to estimate an average isolated drainages (Crompton 1993). of Contra Costa goldfields depends on generation time of 2 years for Butte Butte County meadowfoam has been host-specific bees or more generalist County meadowfoam and to predict that found occasionally in disturbed areas pollinators is currently unknown. a seed would be transferred between such as drainage ditches, firebreaks, and Seed dispersal mechanisms in Contra populations only once every 100 to 200 graded sites (McNeill and Brown 1979, Costa goldfields are unknown. However, years. Although considerable Jokerst 1989, Kelley and Associates the lack of a pappus or even hairs on the morphological variability has been Environmental Sciences 1992, achenes makes wind dispersal unlikely observed within populations, it BioSystems Analysis, Inc. 1993, Kelley (Ornduff 1976). Seed longevity, survival apparently is attributable to differences and Associates Environmental Sciences rates, fecundity, and other demographic in environmental response by plants of 1993). parameters have not been investigated. the same genetic makeup (Jain 1976, Further discussion on Butte County However, as with other vernal pool Jokerst 1989). meadowfoam’s life history and habitat annuals, population sizes have been Two occurrences of Butte County characteristics can be found in the final observed to vary by up to four orders of meadowfoam have been extirpated, one rule to list the species (62 FR 54807). magnitude from year to year (CNDDB each in northern and southeastern Chico 2001). (Jokerst 1989, Dole and Sun 1992, Contra Costa Goldfields By far the greatest concentration of Service 1992a, CNDDB 2001). Some of Greene (1888) first described Contra this species is in Solano County where the other 11 occurrences have been Costa goldfields, as Lasthenia Contra Costa goldfields are found in the reduced in extent (CNDDB 2001). The conjugens, from specimens collected area east and south of the City of most recent reports are from 1992 and near Antioch, California. Hall (1914) Fairfield. Other areas that support additional losses could have occurred later lumped Contra Costa goldfields in populations of this species include the since then. with the common species Fremont’s central coast between Monterey and Sawyer and Keeler-Wolf (1995) goldfields, which at that time was called Alameda counties, including Fort Ord mentioned Butte County meadowfoam Baeria fremontii. Ferris (1958) proposed in Monterey County, San Francisco Bay as only associated with Northern Basalt the name Baeria fremontii var. National Wildlife Refuge, and near Flow vernal pools; however, this pool conjugens to recognize the Fremont, in Alameda County. The Santa type was likely based on the erroneous distinctiveness of L. conjugens. Finally, Barbara County occurrence has probably Table Mountain occurrence. Butte Ornduff (1966) restored Greene’s been lost due to habitat alteration

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(CNDDB 2001). Contra Costa goldfields observed eating seeds of Hoover’s counties). Of the 30 occurrences, one also occurs near Manchester in spurge and thus may assist in seed each in Tehama and Tulare counties are Mendocino County, and at Suscol Ridge dispersal (Alexander and Schlising classified as extirpated; two others, in in Napa County. Another Napa County 1997). Butte and Tehama counties, are site, Milliken Canyon, contained only a Demographic data suggest that seeds ‘‘possibly extirpated’’ because this single plant in 1987 and may or may not of Hoover’s spurge can remain dormant species was not observed for two be still in existence (CNDDB 2001). The until the appropriate temperature and consecutive years (Stone et al. 1988, other existing occurrence is near Rodeo moisture conditions occur. This is CNDDB 2001). Of the 26 occurrences in Contra Costa County (CNDDB 2001). evident from the fact that plants can be presumed to be extant, only 12 have Further discussion on Contra Costa absent from a given pool for up to four been observed within the past decade goldfields’ life history and habitat years and then reappear in substantial (CNDDB 2001). characteristics can be found in the final numbers. Although certain years appear The main area of concentration for rule to list the species (62 FR 33037). to be more favorable for Hoover’s spurge Hoover’s spurge is within the than others, population trends vary from northeastern . The Hoover’s spurge pool to pool, even within the same year Vina Plains of Tehama and Butte Hoover’s spurge (Chamaesyce in the same area. Moreover, a particular counties contains 14 (53.8 percent) of hooveri) was originally named year may be favorable for Hoover’s the 26 extant occurrences for Hoover’s hooveri based on a specimen spurge at one site and unfavorable at spurge (CNDDB 2001) in an area collected by Hoover in Yettem, Tulare another. For example, Hoover’s spurge approximately 91 sq km (35 sq mi) in County (Wheeler 1940). Koutnik (1985) was extremely abundant on the Vina extent (Stone et al. 1988). One other site placed the species in the genus Plains Preserve in 1995, but reached a in the same region is near Chico in Butte Chamaesyce as Chamaesyce hooveri. 7-year low at Sacramento National County. Seven of the extant occurrences Hoover’s spurge is an annual herb of Wildlife Refuge that year. Five are in Southern Sierra Foothills Vernal the spurge family (). occurrences of Hoover’s spurge have Pool Region, including five in the Hoover’s spurge trails along the ground, numbered 5,000 or more plants at their Visalia-Yettem area of Tulare County forming gray-green mats 5 to 100 cm maximum size. Four of those five occur and two in the Hickman-La Grange area (2.0 to 39.4 in) in diameter (Broyles on the Vina Plains, and the other occurs of Stanislaus County. Three other 1987, Stone et al. 1988). The stems are in Tulare County (Stone et al. 1988, occurrences are on the Sacramento hairless and contain milky sap. The tiny CNDDB 2001). National Wildlife Refuge in Glenn (2 to 5 mm (0.08 to 0.20 in)) leaves are Hoover’s spurge probably is County, which is in the Solano-Colusa opposite, rounded to kidney-shaped, pollinated by insects. Related species in Vernal Pool Region. The one other with an asymmetric base and a toothed the spurge family are pollinated by flies extant occurrence is on the Bert Crane margin. In the genus Chamaesyce, the (Heywood 1978, Stone et al. 1988). Ranch in Merced County, which is structures that appear to be flowers Also, glands on the plant produce nectar within the San Joaquin Valley Vernal actually are groups of flowers; each (Wheeler 1941), which is attractive to Pool Region (Keeler-Wolf et al. 1998, group is referred to as a cyathium insects. Beetles, flies, bees and wasps, CNDDB 2001). (Koutnik 1993). and butterflies and moths (order Further discussion on Hoover’s Few details of the life history of Lepidoptera) have been observed spurge’s life history and habitat Hoover’s spurge are known. Seeds of visiting the flowers of Hoover’s spurge characteristics can be found in the final Hoover’s spurge germinate after water and may potentially serve as pollinators rule to list the species (62 FR 14351). evaporates from the pools; the plants (Stone et al. 1988, Alexander and Succulent Owl’s-Clover cannot grow in standing water Schlising 1997). Related species in the (Alexander and Schlising 1997). The genus Euphorbia typically are cross- Succulent (or fleshy) owl’s-clover was indeterminate growth pattern allows the pollinated because the female flowers first described by Hoover (1936a) as plants to continue growing as long as on each plant mature before the male Orthocarpus campestris var. sufficient moisture is available. The (Heywood 1978, Stone et al. 1988), succulentus. The type specimen had proportion of seedlings surviving to which may or may not be the case for been collected at Ryer, in Merced reproduction has not been documented; Hoover’s spurge. County. Hoover (1968) subsequently in years of below normal rainfall, For decades, Hoover’s spurge was raised succulent owl’s-clover to the rank seedling survival was characterized as known from only three localities—near of species and assigned it the name ‘‘low’’ (Stone et al. 1988). The Yettem and Visalia in Tulare County, Orthocarpus succulentus. Chuang and phenology (timing of various stages in and near Vina in Tehama County. Heckard (1991) reconsidered the the life cycle of a plant) varies among Collections were made from these three of Orthocarpus and related years and among sites, even for those areas in the late 1930’s and early 1940’s genera. Based on floral morphology populations in close proximity (Stone et (Wheeler 1941, Munz and Keck 1959, (external structure or form), seed al. 1988). Populations in Merced and Stone et al. 1988). From 1974 through morphology, and chromosome number, Tulare counties typically flower from 1987, 21 additional occurrences of they transferred many species into the late May through July, whereas those in Hoover’s spurge were reported. The genus Castilleja. Furthermore, they Stanislaus County and the Sacramento majority of these (15) were in Tehama determined that the appropriate rank for Valley flower from mid-June into County. One to three occurrences were succulent owl’s-clover was as a October (Alexander and Schlising 1997, discovered during this period in each of subspecies of Castilleja campestris (field CNDDB 2001, J. Silveira USFWS pers. Butte, Merced, Stanislaus, and Tulare owl’s-clover). The scientific name comm.). Seed set apparently begins soon counties (Stone et al. 1988, CNDDB currently assigned to the plant is after flowering. Seed production has not 2001). Castilleja campestris ssp. succulenta been quantified or studied in relation to The CNDDB (2001) now includes 30 (Chuang and Heckard 1991). environmental factors, but Stone et al. occurrences of Hoover’s spurge. In Succulent owl’s-clover is a (1988) reported that large plants may addition to those known historically, six hemiparasitic (partly parasitic) annual produce several hundred seeds. Horned occurrences were discovered in 1992 herb belonging to the snapdragon family larks (Eremophila alpestris) have been (three each in Glenn and Tulare (Scrophulariaceae). It has erect or

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decumbent stems up to 30 cm (11.8 in) clover, although population size can after 3 to 5 consecutive years when no long. The stems are usually unbranched fluctuate greatly from year to year. In mature plants were present (Griggs and without hairs. The leaves at the the few populations where population 1980, Griggs and Jain 1983, Holland base of the stem are small and scalelike, size was reported for more than 1 year, 1987). Thus, many years of observation whereas those on the upper stem are fluctuations up to two orders of are necessary to determine whether a lance-shaped, not lobed, thick, fleshy, magnitude were noted (CNDDB 2001). population is stable or declining. brittle, and easily broken. The Succulent owl’s-clover is known from All members of the Orcuttieae are (leaf-like structures in the flowering vernal pool habitats along the Southern endemic to vernal pools. Although the structure) are green, similar to but Sierra Foothills ranging from Madera various species have been found in shorter than the upper leaves, and County to a disjunct occurrence in pools ranging widely in size, the vast longer than the flowers. Overall, the northern San Joaquin County. The majority occur in pools of 0.01 ha (0.03 (entire flowering structure highest density of occurrences of ac) to 10 ha (24.7 ac) (Stone et al. 1988). of a plant) may occupy as much as half succulent owl’s-clover occurs in Merced Larger pools retain water until May or of the plant’s height (Hoover 1936a, County, but the species is also known June, creating optimal conditions for Hoover 1937, Hoover 1968, Chuang and from Fresno, Madera, Stanislaus, and Orcuttieae (Crampton 1959, Crampton Heckard 1991, Chuang and Heckard San Joaquin counties. 1976, Griggs 1981, Griggs and Jain 1993). Further discussion on succulent 1983). Orcuttieae occur in patches As with many related species, owl’s-clover life history and habitat within the pools that are essentially succulent owl’s-clover is a hemiparasite, characteristics can be found in the final devoid of other plant species (Crampton meaning that it obtains water and rule to list the species (62 FR 14351). 1959, Crampton 1976). Typically, plants nutrients by forming root grafts with Orcuttieae Tribe near the center of a pool grow larger and other host plants but manufactures its Colusa grass, hairy Orcutt grass, produce more spikelets than those near own food through photosynthesis the margins, but patterns vary (Chuang and Heckard 1991). Research Solano grass, Greene’s tuctoria, Sacramento Valley Orcutt grass, San depending on individual pool on hemiparasitism has focused on characteristics and seasonal weather related species of Castilleja, but not Joaquin Valley Orcutt grass, and slender Orcutt grass belong to the tribe conditions (Griggs 1980). specifically on succulent owl’s-clover. The specific life history requirements Many different plants can serve as hosts Orcuttieae in the grass family, and distribution of each of the seven for a single species or even a single (Reeder 1965). Many life history Orcuttieae species are provided below. individual of Castilleja. Seeds do not characteristics are common to all require the presence of a host to members of the Orcuttieae. All are wind Colusa Grass germinate, and form root connections pollinated, but pollen probably is not Colusa grass (Neostapfia colusana) only after reaching the seedling stage. carried long distances between was first described by Davy (1898), and Some seedlings can survive to maturity populations (Griggs 1980, Griggs 1981, given the Latin name Stapfia colusana. without attaching to a host’s roots, but Griggs and Jain 1983). Local seed He had collected the type specimen near in general reproduction is enhanced by dispersal is by water, which breaks up the town of Princeton in Colusa County. root connections (Atsatt and Strong the inflorescence (Reeder 1965, Davy soon realized that the name 1970). Crampton 1976, Griggs 1980, Griggs The conditions necessary for 1981). Long distance dispersal is Stapfia had already been assigned to a germination of succulent owl’s-clover unlikely (Service 1985c) but seed may genus of green algae and therefore seeds have not been studied, nor has the have been carried occasionally by changed the scientific name of Colusa timing of seed germination been waterfowl (family Anatidae), tule elk grass to Neostapfia colusana (Davy documented. Flowering occurs in April (Cervus elaphus nannoides), or 1899). Two other taxonomists proposed and May (Skinner and Pavlik 1994). pronghorn (Antilocapra americana) in alternate Latin names for the genus in Although many related taxa of Castilleja historical times (Griggs 1980). The seeds the same year, but neither is accepted are pollinated by generalist bees can remain dormant for an today. No other species of Neostapfia (Superfamily Apoidea) (Chuang and undetermined length of time, but at are known (Reeder 1982, Reeder 1993). Heckard 1991), succulent owl’s-clover is least for 3 or 4 years, and germinate Unlike terrestrial grasses, Colusa grass thought to be self-pollinating. Among underwater after they have been has pith filled stems, lacks distinct leaf close relatives that do not require insect immersed for prolonged periods sheaths and ligules, and produces pollinators, flower structure and timing (Crampton 1976, Griggs 1980, Keeley exudate (aromatic, sticky fluid of stigma receptivity maximize the 1998a). Unlike typical terrestrial grasses discharged from the plant surface). chances for self-fertilization and seed that grow in the uplands surrounding Colusa grass stems and inflorescence set. Even so, insects may transfer some vernal pools, members of the Orcuttieae (flower cluster) differs from other pollen among individual plants and flower during the summer months members of the Orcuttieae. The plant is species occurring in the same area. Self- (Keeley 1998a). pale green when young (Davy 1898) but pollinating species of Castilleja All members of the Orcuttieae tribe becomes brownish as the exudate typically occur as widely scattered have large soil seed banks that may darkens (Reeder 1982, Reeder 1993). individuals, rather than in dense often be 50 times or more larger in Existing populations of Colusa grass colonies (Atsatt 1970). Succulent owl’s- numbers than the above ground are concentrated northeast of the city of clover follows this pattern in part, often population in any given year. In general, Merced in Merced County and east of occurring in many pools within a years of above average rainfall promote Hickman in Stanislaus County. Colusa complex but with fewer than 100 plants larger populations of Orcuttieae, but grass also occurs in central Merced per pool. However, succulent owl’s- population responses vary by pool and County, in southeastern Yolo County, clover also may occur in large by species (Griggs 1980, Griggs and Jain and in central Solano County (Stone et populations within a single pool 1983). Population sizes have been al. 1988, Keeler-Wolf et al. 1998, (California Natural Diversity Data Base observed to vary by one to four orders CNDDB 2001). This species has been (CNDDB) 2001). Little is known about of magnitude among successive years extirpated from Colusa County (CNDDB the demography of succulent owl’s- and to return to previous levels even 2001).

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In the 50 years after its initial with peak flowering in June and July Hairy Orcutt Grass discovery (Davy 1898), Colusa grass was (Griggs 1981, Broyles 1987). Hoover (1941) described hairy Orcutt reported from only three sites other than As with other vernal pool annuals, grass as () from the type locality; these were in Merced population size in Greene’s tuctoria can specimens he collected in Stanislaus and Stanislaus counties. By the mid- vary enormously from year to year, and County, ‘‘12 miles east of Waterford’’ in 1970’s Colusa grass had been reported populations that have no visible plants 1937. Hairy Orcutt grass grows in tufts from a total of 11 sites in Colusa, one year can reappear in large numbers consisting of numerous stems. The Merced, Solano, and Stanislaus counties in later years. Population fluctuations stems are decumbent (laying on the (Hoover 1936b, Hoover 1940, Crampton may be due to annual variations in ground with the tip turned upward) or 1959, Medeiros 1976, Reeder 1982). weather, particularly rainfall, to changes erect and branch from only the lower During the 1980’s, many new in management, or to a combination of nodes. Almost the entire plant is pilose populations of Colusa grass were the two. Such fluctuations were or hairy, giving it a grayish appearance. located during extensive surveys. As of observed at scattered sites in Butte and The spikelets near the tip of the 1989, 40 occurrences were extant and 11 Tehama counties during the 1970’s inflorescence are crowded together, already had been extirpated. Of the 51 (Griggs 1980, Griggs and Jain 1983) and whereas those near the base are more occurrences known up to that point, 26 at Sacramento National Wildlife Refuge, widely spaced. were in Merced County, 22 were in where the population in the single Griggs (1974 cited in Stone et al. Stanislaus County, 2 were in Solano occupied pool ranged from zero to 60 1988) found that stratification followed County, and one was in Colusa County plants between 1994 and 1999 (Silveira by temperatures of 15 to 32°C (59 to (Stone et al. 1988, CNDDB 2001). in litt. 2000). Fluctuations of as much as 90°F) was necessary for seed Currently, the CNDDB (2001) considers three orders of magnitude were germination in hairy Orcutt grass. 48 occurrences of Colusa grass to be documented on the Vina Plains Preserve Flowering period for the plant is mid- ‘‘presumed extant’’ and 11 others as during the 1980’s and 1990’s (Alexander April through July. Seed production has known or possibly extirpated. and Schlising 1997) not been studied extensively in hairy Further discussion on Colusa grass’s After its discovery in Butte County in life history and habitat characteristics Orcutt grass, but Griggs and Jain (1983) 1890, Greene’s tuctoria was not seen did note that one individual produced can be found in the final rule to list the again for over 40 years. During extensive species (62 FR 14338). more than 10,000 seeds. Although the surveys in the late 1930’s, Hoover (1937, predominant pollination agent for all Greene’s Tuctoria 1941) found the species at sites in Orcutt grasses is wind, native bees Greene’s tuctoria (Tuctoria greenei) Fresno, Madera, Merced, San Joaquin, (Halictidae) have been observed visiting was originally assigned its name by Stanislaus, Tehama, and Tulare the inflorescence of hairy Orcutt grass to Vasey (1891) as Orcuttia greenei. Greene counties. In fact, he described it as the gather pollen (Griggs 1974 cited in had collected the type specimen in 1890 most common of all Orcuttia species, Stone et al. 1988). ‘‘on moist plains of the upper with which it was classified at the time. Like other vernal pool annuals, the Sacramento, near Chico, California’’ By the end of the 1980’s, Greene’s size of hairy Orcutt grass populations (Vasey 1891), presumably in Butte tuctoria had been reported from a total fluctuates dramatically from year to County (Hoover 1941, Crampton 1959). of 36 occurrences in the same 8 counties year. Population sizes have varied by as Citing differences in lemma (Stone et al. 1988, CNDDB 2001). much as four orders of magnitude over morphology, arrangement of the Three additional occurrences of time (Griggs 1980, Griggs and Jain 1983, spikelets, and other differences, Reeder Greene’s tuctoria have been discovered Alexander and Schlising 1997). In fact, (1982) segregated the genus Tuctoria during the past decade, bringing the two populations that had no visible from Orcuttia and created the new reported total to 39 occurrences (Oswald plants for three successive years scientific name Tuctoria greenei for this and Silveira 1995, CNDDB 2001). exceeded 10,000 plants in the fourth species. However, 19 of the historical year (Griggs 1980, Griggs and Jain 1983). Greene’s tuctoria is an erect to low occurrences apparently have been Hairy Orcutt grass is known from sites growing annual with fragile stems that extirpated. The other 20 occurrences are in the southern portion of the easily break apart at the nodes, which presumed to be still in existence, Sacramento Valley and the southern are often purplish. The leaves are flat although 6 of those have not been Sierra foothills (Keeler-Wolf et al. 1998). and curve outward and the plants are verified for more than a decade The species has been found in Tehama, sparsely hairy. The inflorescence is (Alexander and Schlising 1997, CNDDB Stanislaus, Madera, and Merced crowded near the tip with the lower 2001). counties (Hoover 1941, Crampton 1959, spikelets more or less separated. Sixty percent of the extant Reeder 1982, Stone et al. 1988, CNDDB Optimum germination of Greene’s occurrences of Greene’s tuctoria are in 2001). Hairy Orcutt grass also was tuctoria seed occurs when the seed is the Vina Plains area of Tehama and collected in Glenn County, in 1937 exposed to light and anaerobic (lacking Butte counties. Eastern Merced County (CNDDB 2001); the specimen has since oxygen) conditions after stratification has about 30 percent of the known been lost but may have been (Keeley 1988). Germination occurs occurrences. Other occurrences are misidentified as California Orcutt grass several months after initial inundation located in Glenn (Oswald and Silveira (Silveira in litt. 2000). During the late (Keeley 1998a). Tuctoria seedlings do 1995) and Shasta counties (CNDDB 1980’s, Stone et al. (1988) determined not develop floating juvenile leaves, as 2001). Greene’s tuctoria has been that 12 historical occurrences had been does Orcuttia (Griggs 1980, Keeley extirpated from Fresno, Madera, San extirpated but they and others 1998a). The adult plants apparently do Joaquin, Stanislaus, and Tulare counties discovered three additional populations not tolerate inundation; all five Greene’s (Stone et al. 1988, Skinner and Pavlik in Madera, Stanislaus, and Tehama tuctoria plants in a Glenn County pool 1994, CNDDB 2001). counties. One other occurrence from died when the pool refilled during late Further discussion on Greene’s Madera County was previously spring rains in 1996 (Silveira in litt. tuctoria’s life history and habitat considered to be hairy Orcutt grass and 1997). Greene’s tuctoria flowers from characteristics can be found in the final is listed as such in the CNDDB (2001); May to July (Skinner and Pavlik 1994), rule to list the species (62 FR 14338). however, this population since has been

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identified as San Joaquin Valley Orcutt the seed bank stored in the soil was Mature plants of San Joaquin Valley grass (Stone in litt. 1992). approximately 44 times as great as the Orcutt grass grow in tufts of several Within the past decade, hairy Orcutt population of growing plants (Griggs erect stems. The plant is grayish-green grass has been discovered in additional 1980, Griggs and Jain 1983). The due to the long hairs on the stem and areas in Glenn, Madera, and Tehama number of plants varies with rainfall. leaves and produces exudate. Orcuttia counties (CNDDB 2001). Hairy Orcutt Large numbers of plants grow only in plants grow underwater for 3 months or grass has also been discovered in years when seasonal rainfall exceeds 40 more and have evolved specific another pool at the Vina Plains Preserve cm (16 in), particularly when heavy adaptations for aquatic growth (Keeley in Tehama County (Alexander and rains begin in November and continue 1998a). Schlising 1997). Of the 38 element through the end of April (Holland 1987). The earliest collection of San Joaquin occurrences listed by the CNDDB This species is less likely to germinate Valley Orcutt grass was made in 1927 (2001), not counting the misidentified in years of below normal precipitation from the Fresno-Madera County border population of San Joaquin Valley Orcutt than are other members of the tribe near Lanes Bridge (CNDDB 2001). grass, 24 natural occurrences are (Griggs 1980, Griggs and Jain 1983). Hoover (1941) mentioned collections presumed to be still in existence. Sacramento Orcutt grass is endemic to from eight sites in Fresno, Madera, Nineteen of those occurrences have the southeastern Sacramento Valley Merced, Stanislaus, and Tulare been confirmed as existing within the (Keeler-Wolf et al. 1998) and always has counties. A total of 20 occurrences had past decade (CNDDB 2001). been restricted to Sacramento County. been reported by the mid 1970’s, all in Further discussion on hairy Orcutt The earliest collection was from 1936 the same five counties (Crampton 1959, grass’s life history and habitat near Phoenix Field. Three other CNDDB 2001), but none remained as of characteristics can be found in the final occurrences documented in 1941 and the late 1970’s (Griggs 1980, Griggs and rule to list the species (62 FR 14338). 1958 extended the range north to Jain 1983). However, since that time San Sacramento Orcutt Grass Orangevale and south to near Joaquin Valley Orcutt grass has been Sloughhouse. Sacramento Orcutt grass discovered in Merced, Madera, and Hoover (1941) first described was introduced to Phoenix Park, in Fresno counties, and recently additional Sacramento Orcutt grass (Orcuttia Sacramento County, in 1978. Three occurrences of San Joaquin Valley viscida) as var. additional natural occurrences were Orcutt grass have been found, including viscida based on the type specimen he discovered in the late 1980’s, including sites in Tulare County. Of the 47 collected from ‘‘7 miles south of one in extreme southeastern Sacramento occurrences of San Joaquin Valley Folsom’’ in Sacramento County. Reeder County near State Highway 104. Thus, Orcutt grass reported in CNDDB (2001), (1980) determined that the differences by 1990 this species was known from a 27 are presumed to be still in existence; in morphology, seed size, and total of seven natural occurrences and 17 are certainly extirpated and 3 others chromosome number were sufficient one introduction (Stone et al. 1988, are possibly extirpated because the grounds to elevate Sacramento Orcutt CNDDB 2001). habitat has been modified (CNDDB grass to the species level as Orcuttia Within the past decade, Sacramento 2001). However, only 12 of the viscida. Orcutt grass has been discovered at one occurrences presumed still in existence In basic form, Sacramento Orcutt new site in Sacramento County, within have been revisited within the past grass resembles other members of the the previously known range. However, decade, so even the most recent tribe and genus. Although all members one entire occurrence and a portion of information is outdated. This species of the Orcuttieae produce exudate, another have been extirpated. Thus, has been completely extirpated from Sacramento Orcutt grass is particularly eight of the nine occurrences are still in Stanislaus County but remains in viscid even when young. The plants are existence. Five occurrences, comprising Fresno, Madera, Merced, and Tulare densely tufted, bluish green, and more than 70 percent of the occupied counties (Stone et al. 1988, Skinner and covered with hairs. The stems are erect habitat, are concentrated into a single Pavlik 1994, CNDDB 2001). or spreading, 3 to 10 cm (1 to 4 in) long, small area east of Mather Field. Two Further discussion on San Joaquin and do not branch. The inflorescence other occurrences are adjacent to each Valley Orcutt grass’s life history and occupies the upper one third to one half other-Phoenix Field Ecological Reserve habitat characteristics can be found in of the stem and consists of between 5 and the introduced population at the final rule to list the species (62 FR and 15 spikelets. The spikelets are Phoenix Park. The eighth existing 14338). closely spaced, and although distichous occurrence is near Rancho Seco Lake Slender Orcutt Grass (arranged in two opposing rows) are (Stone et al. 1988, Cochrane in litt. oriented towards one side of the stem. 1995a, CNDDB 2001). Slender Orcutt grass (Orcuttia tenuis) Sacramento Orcutt grass flowers in Further discussion on Sacramento was first named by Hitchcock (1934). May and June (Griggs 1977, Skinner and Orcutt grass life history and habitat The type specimen of slender Orcutt Pavlik 1994, Cochrane in litt. 1995a) and characteristics can be found in the final grass was collected in Goose Valley, sets seed in June and July (Holland rule to list the species (62 FR 14338). Shasta County, in 1912. Slender Orcutt 1987). Seeds likely do not disperse far grass grows as single stems or in small under natural conditions. In a 6-year San Joaquin Valley Orcutt Grass tufts consisting of a few stems. The period, an experimental population Hoover (1936b) described San Joaquin plants are sparsely hairy and branch spread at most 3 m (10 ft) from the seed Valley Orcutt grass (Orcuttia inaequalis) only from the upper half of the stem. source, and 95 percent of plants were based on a collection from ‘‘Montpellier Although the stems typically are erect, within 30 cm (12 in) of the source [sic], Stanislaus County.’’ Hoover (1941) they may become decumbent if many (Holland in litt. 1986). A demographic subsequently reduced this taxon to a branches form near the stem tip (Reeder study conducted from 1974 to 1978 variety of Orcuttia californica, using the 1982). The inflorescence comprises (Griggs 1980, Griggs and Jain 1983) combination Orcuttia californica var. more than half of the plant’s height, and indicated that Sacramento Orcutt grass inaequalis. Based on differences in the spikelets are more or less evenly produced an average of 500 seeds per morphology, seed size, and chromosome spaced throughout the inflorescence. plant. At one site in 1978, 88 percent of number, Reeder (1980) restored the Optimal germination of slender Orcutt plants survived to maturity. The size of taxon to species status. grass is achieved through stratification

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followed by warm days and mild nights characteristics can be found in the final The vernal pool plants are threatened (Griggs 1974 in Stone et al. 1988). Peak rule to list the species (62 FR 14338). by habitat loss and degradation due to flowering of this species typically urbanization, agricultural land Solano Grass occurs in May in the Central Valley conversion, off road vehicle use, flood (Griggs 1981, Reeder 1982) but not until Solano grass (Tuctoria mucronata) control projects, highway projects, June or July on the Modoc Plateau was originally described under the altered hydrology, landfill projects, and (Schoolcraft in litt. 2000). Unlike hairy name Orcuttia mucronata based on competition from weedy nonnative Orcutt grass and Greene’s tuctoria, specimens collected ‘‘12 miles due plants. The habitat of these species has slender Orcutt grass is not likely to die south of Dixon, Solano County’’ been reduced and fragmented when pools are flooded by late spring or (Crampton 1959, p. 108). Reeder (1982) throughout their respective ranges as summer rains (Griggs 1980, Griggs and transferred this species to a new genus, vernal pools continue to be eliminated. Jain 1983). Conversely, drought has Tuctoria, resulting in the currently Further discussion on threats to the been known to cause 100 percent accepted name Tuctoria mucronata. vernal pool plants can be found in the mortality (Griggs 1980, Griggs and Jain Solano grass is grayish-green, pilose, final rules to list these species (62 FR 1983). and sticky. The tufted stems are 34029, 62 FR 14338, 57 FR 24192, 43 FR Similar to other vernal pool annuals, decumbent and do not branch. The long 44810) and in the criteria section of this slender Orcutt grass populations can leaves are rolled inward and have proposed rule. vary greatly in size from year to year. pointed tips. The base of the Fluctuations of up to four orders of Previous Federal Action (Vernal Pool inflorescence is partially hidden by the Crustaceans) magnitude have been documented in uppermost leaves. As is characteristic of Lake and Shasta counties (Griggs 1980, the genus, the spikelets are arranged in Ms. Roxanne Bittman petitioned us to Griggs and Jain 1983). At the Vina a spiral; the spikelets in the list Conservancy fairy shrimp, longhorn Plains Preserve, the single population inflorescence of Solano grass are fairy shrimp, vernal pool fairy shrimp, ranged in size from 1,000 to 147,700 crowded together. and California linderiella () as endangered species on individuals during the five times it was Solano grass typically flowers in June November 19, 1990. Ms. Dee Warneycia reported over a 13 year period (Stone et and sets seed during July (Holland petitioned us to list vernal pool tadpole al. 1988, Alexander and Schlising 1997). 1987). The demography of Solano grass shrimp as an endangered species on However, slender Orcutt grass has not been investigated in detail. April 28, 1991. On May 8, 1992, we populations do not always fluctuate in Annual estimates or counts at Olcott size. Among five populations of slender published a proposed rule in the Lake (Holland 1987, CNDDB 2001) Federal Register (57 FR 19856) to list Orcutt grass that Griggs tracked from indicated that population sizes for this 1973 to 1979, two in the Dales area the four fairy shrimp and vernal pool species fluctuate dramatically from year remained at the same order of tadpole shrimp as endangered. On to year, as do other members of the magnitude for the entire period. None of September 19, 1994, we published a Orcuttieae. Solano grass was not the other five species of Orcuttieae final rule in the Federal Register (59 FR observed at Olcott Lake from 1976 included in the study remained stable 48136) determining endangered status through 1980, then reappeared in 1981 for the full 7 years (Griggs 1980, Griggs for Conservancy fairy shrimp, longhorn (Holland 1987), indicating that viable and Jain 1983). fairy shrimp and vernal pool tadpole By the mid 1980s, slender Orcutt seeds can persist in the soil for a shrimp and threatened status for vernal grass was known from only 18 localities minimum of 5 years. Apparently both pool fairy shrimp. We withdrew the in Lake, Sacramento, Shasta, and drought years and years of excessively California linderiella as a species Tehama counties (Reeder 1982, Stone et high rainfall are unfavorable for Solano proposed for listing based on additional al. 1988). During the late 1980s, Stone grass; the largest populations were information received during the public et al. (1988) and others (CNDDB 2001) observed after seasons of 45 to 60 cm review and comment period indicating discovered 34 additional occurrences of (17.7 to 23.6 in) of precipitation that during the review period this slender Orcutt grass. Slender Orcutt (Holland 1987). species was more abundant than grass was found primarily in Tehama Prior to 1985, Solano grass was previously known. County, in the vicinity of Dales and on known only from Olcott Lake in Solano On April 17, 1995, the Building the Vina Plains. The species was also County, which is believed to be the type Industry Association of Superior found in the Stillwater and Millville locality (Crampton 1959, CNDDB 2001). California (BIAC) and Marvin L.Oates Plains of Shasta County, and at A second occurrence was discovered in (Plaintiffs) filed a lawsuit in Federal additional sites in Shasta, Siskiyou, 1985 approximately 4 km (2.5 mi) District Court for the District of Lake, and Sacramento counties (Griggs southwest of Olcott Lake (CNDDB 2001). Columbia against Bruce Babbit and Jain 1983, Stone et al. 1988, CNDDB Solano grass is presumed to remain at (Secretary, Department of the Interior) et 2001). During the past decade, 27 new the type locality, although only four al. (Defendants) and Environmental occurrences of slender Orcutt grass have individual plants have been found Defense Center and Butte been reported. In addition to the within the last decade, all in 1993 Environmental Council (Defendent- counties where it was reported (CNDDB 2001). The other Solano Intervenors) arguing that the listing of historically, slender Orcutt grass is now County site is still in existence. A third four vernal pool crustaceans known from Lassen and Plumas occurrence, comprising the largest (Conservancy fairy shrimp, longhorn counties. The extirpated occurrences of population known, was discovered in fairy shrimp, vernal pool fairy shrimp, slender Orcutt grass were near Reading 1993 on a Department of Defense (DOD) and vernal pool tadpole shrimp) Airport and Stillwater Plains in Shasta communications facility in Yolo County violated the Act, the Administrative County and additional possibly (CNDDB 2001). Procedures Act, the Fifth Amendment, extirpated occurrences were near Goose Further discussion on Solano grass’s the Tenth Amendment, and the Valley and Battle Creek in Tehama and life history and habitat characteristics Commerce Clause of the United States Shasta counties. can be found in the Delta Green Ground Constitution (Building Industry Further discussion on slender Orcutt Beetle and Solano Grass Recovery Plan Association of Superior California, et al. grass’s life history and habitat (Service 1985c). v. Babbit et al., CIV 95–0726 PLF). On

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July 25, 1997, the district court granted determine approximately 1,700 vascular on August 5, 1993 (58 FR 41700), in the the defendant’s motion for summary plants as endangered pursuant to same notice proposing to list succulent judgement on all aspects except the section 4 of the Act. The 1,700 plants owl’s clover and seven other vernal pool decision not to designate critical habitat. included all eleven vernal pool plants plants under the Act. The plaintiffs later amended their considered here. On August 5, 1993, we published a complaint to drop the claim relating to We published a final rule to list proposal to list San Joaquin Valley the designation of critical habitat and Solano grass (along with four other Orcutt grass, hairy Orcutt grass, the district court vacated its ruling plants) as endangered on September 28, Sacramento Orcutt grass, and Greene’s regarding this matter. On April 12, 2000, 1978 (43 FR 44810). A recovery plan for tuctoria as endangered; and to list the Butte Environmental Council filed Solano grass and the delta green ground succulent owl’s-clover, Hoover’s spurge, suit, alleging that our failure to establish beetle (Elaphrus viridis) was Colusa grass, and slender Orcutt grass as critical habitat for the four vernal pool subsequently approved on September threatened was published on August 5, crustaceans violated the Endangered 11, 1985 (Service 1985c). We failed to 1993 (58 FR 41700). This proposal was Species Act and the Administrative complete final listing rules for the other primarily based on information Procedures Act (Butte Environmental ten vernal pool plants within three years supplied by reports to the CNDDB, the Council v. White CIV S–00–797 WES of the proposed listing, however, Status Survey of the Grass Tribe GGH). On February 9, 2001, the U.S. despite amendments to the Act in 1978 Orcuttieae and Hoover’s Spurge in the District Court for the Eastern District of requiring us to withdraw proposed rules Central Valley of California (Stone et al. California granted the plaintiff’s motion which were more than two years old 1988), and observations by numerous for summary judgement and required (with a one-year grace period). botanists. Prior to publishing the final the defendants, to the maximum extent Accordingly, on December 10, 1979, we rule on these eight plants, we published prudent and determinable, to designate withdrew the proposal to list the ten another NOR on September 30, 1993 (58 critical habitat for the four vernal pool remaining vernal pool plants (44 FR FR 51144), indicating that the current crustaceans within six months. 70796). status of the vernal pool plants as On July 23, 2001, the district court We established the remaining vernal category 1 candidates remained approved a settlement agreement pool plants as category 1 candidate unchanged. We subsequently published between the parties which extended the species in a Notice of Review (NOR) for a proposal to list Contra Costa goldfields deadline for designation of critical plants published December 15, 1980 (45 as endangered on December 19, 1994 habitat to August 15, 2002. As a FR 82480). Category 1 candidates were (59 FR 65311). Then on March 26, 1997, condition of the settlement, we agreed those species for which data in our we published the final rule (62 FR to also designate critical habitat, to the possession was sufficient to support 14338) for the eight plants proposed for maximum extent prudent and proposals to list. In a subsequent NOR listing in 1993. The final rule listed San determinable, for the eleven vernal pool published November 28, 1983 (48 FR Joaquin Valley Orcutt grass as plants addressed in this proposed rule 53640), we downgraded the status of threatened, rather than endangered as by the same date. Contra Costa goldfields, slender Orcutt had originally been proposed, because grass and Colusa grass to category 2. we determined the threats to its Previous Federal Action (Vernal Pool Category 2 candidates were defined as existence to be smaller and less Plants) species for which data in our possession immediate than had previously been Section 12 of the Act directed the indicated listing was possibly thought. All seven other plants were Secretary of the Smithsonian Institution appropriate, but for which we lacked listed as proposed, resulting in a listing to prepare a report on plant species substantial data on biological of hairy Orcutt grass, Sacramento Orcutt which were or might become vulnerability and threats to support grass and Greene’s tuctoria as endangered or threatened. The resulting listing proposals. Another NOR on endangered; and San Joaquin Valley report, dated January 9, 1975, reviewed September 27, 1985, left the status of the Orcutt grass, succulent owl’s clover, the status of 3,100 vascular plants. The remaining vernal pool plants unchanged Hoover’s spurge, Colusa grass and report categorized as endangered six of (50 FR 39526). slender Orcutt grass as threatened. Later the eleven vernal pool plants under On February 2, 1988, we received a that same year (June 18, 1997) we consideration here, and categorized two petition from the California Native Plant published the final rule to list Contra others as threatened. The six plants Society (CNPS) to emergency list Butte Costa goldfields, the last of the vernal considered endangered were hairy County meadowfoam as endangered. We pool plants considered here, as Orcutt grass, Sacramento Orcutt grass, published a 90-day administrative endangered (62 FR 34029). slender Orcutt grass, Colusa grass, San finding that the requested action might We did not identify critical habitat in Joaquin Valley Orcutt grass, and be warranted on December 30, 1988 (53 the final listing rules for any of the succulent owl’s clover. The two FR 53030). On February 15, 1991, we vernal pool plants or crustaceans threatened plants were Contra Costa published a proposal to list Butte considered here because we determined goldfields and Hoover’s spurge. On July County meadowfoam as an endangered that the threats of increased vandalism 1, 1975, the Director of the Department species (56 FR 6345), and on June 8, and collection of listed species in the of the Interior published a notice (40 FR 1992, we published a final areas thus identified would make it 27823) accepting the Smithsonian determination that Butte County imprudent to do so. Based on the Institution’s report as a listing petition meadowfoam was endangered (57 FR interpretation of section 4 of the Act in within the context of section 4(c)(2) of 24192). a number of judicial decisions issued the Act (petition provisions are now On February 22, 1990, we published after the not prudent findings for these found in section 4(b)(3)), and of his a new NOR which re-established Colusa species were made, however, we have intention to review the status of the grass and Contra Costa goldfields as reconsidered those determinations and plants covered by the report. On June category 1 candidate species (55 FR now consider the designation of critical 16, 1976, based on both the Smithsonian 6184). In 1991 and 1992, we received habitat for the fifteen vernal pool report and on public comments and data additional information regarding threats species to be prudent. We are therefore pertaining to it, we published a to succulent owl’s-clover, and so proposing to designate critical habitat proposed rule (41 FR 24523) to returned this species to category 1 status here, for the four vernal pool

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crustaceans and eleven vernal pool as land-managing agencies to the Section 4 of the Act requires that we plants covered by the July 23, 2001, importance of those areas. Critical designate critical habitat based on what court approved settlement agreement in habitat also identifies areas that may we know at the time of designation. that case. require special management Habitat is often dynamic, and species On August 14, 2002, we filed a considerations or protection, and may may move from one area to another over motion in Butte Environmental Council help provide protection to areas where time. Furthermore, we recognize that seeking to modify the deadline of significant threats to the species have designation of critical habitat may not August 15, 2002, for issuance of final been identified, by helping people avoid include all of the habitat areas that may critical habitat determinations. We were causing accidental damage to such eventually be determined to be unable to meet that deadline, and have areas. necessary for the recovery of the asked the court to approve a new In order to be included in a critical species. For these reasons, critical deadline of September 30, 2003. habitat designation, the habitat must habitat designations do not signal that first be ‘‘essential to the conservation of Critical Habitat habitat outside the designation is the species.’’ Critical habitat unimportant or may not be required for Critical habitat is defined in section designations identify, to the extent recovery. Areas outside the critical 3(5)(A) of the Act as: (i) The specific known and using the best scientific and habitat designation will continue to be areas within the geographic area commercial data available, habitat areas subject to conservation actions that may occupied by a species at the time it is that provide at least one of the physical be implemented under section 7(a)(1) of listed in accordance with the Act, on or biological features essential to the the Act and to the regulatory protections which are found those physical or conservation of the species (primary afforded by the section 7(a)(2) jeopardy biological features (I) essential to the constituent elements, as defined at 50 standard and the section 9 prohibitions, conservation of the species and (II) that CFR 424.12(b)). Section 3(5)(C) of the as determined on the basis of the best may require special management Act states that not all areas that can be available information at the time of the considerations or protection; and (ii) occupied by a species should be action. Federally funded or assisted specific areas outside the geographic designated as critical habitat unless the projects affecting listed species outside area occupied by a species at the time Secretary determines that all such areas their designated critical habitat areas it is listed, upon a determination that are essential to the conservation of the may still result in jeopardy findings. such areas are essential for the species. Our regulations (50 CFR Similarly, critical habitat designations conservation of the species. 424.12(e)) also state that, ‘‘The Secretary made on the basis of the best available ‘‘Conservation’’ means the use of all shall designate as critical habitat areas information at the time of designation methods and procedures that are outside the geographic area presently will not control the direction and necessary to bring an endangered or occupied by the species only when a threatened species to the point at which substance of future recovery plans, designation limited to its present range HCPs, or other species conservation listing under the Act is no longer would be inadequate to ensure the necessary. planning efforts if new information conservation of the species.’’ available to these planning efforts calls Critical habitat receives protection Section 4(b)(2) of the Act requires that for a different outcome. under section 7 of the Act through the we take into consideration the economic prohibition against destruction or impact, and any other relevant impact, The action of designating critical adverse modification of critical habitat of specifying any particular area as habitat does not automatically lead to with regard to actions carried out, critical habitat. We may exclude areas recovery of a listed species, but it may funded, permitted, or authorized by a from critical habitat designation when contribute to species recovery. Critical Federal agency. Section 7 also requires the benefits of exclusion outweigh the habitat units are not target preserve conferences on Federal actions that are benefits of including the areas within areas: designation does not target and likely to result in the destruction or critical habitat, provided the exclusion establish specific preserves and their adverse modification of proposed will not result in extinction of the boundaries. Critical habitat is critical habitat. Aside from the added species. designated to make Federal agencies protection that may be provided under Our Policy on Information Standards aware that these areas are critical to the section 7, the Act does not provide other Under the Endangered Species Act, species. Although the designation of forms of protection to lands designated published on July 1, 1994 (59 FR critical habitat can identify areas where as critical habitat. Because consultation 34271), provides criteria, establishes a variety of conservation strategies may under section 7 of the Act does not procedures, and provides guidance to be developed to ensure the survival and apply to activities on private or other ensure that our decisions represent the recovery of target species, the non-Federal lands that do not involve a best scientific and commercial data development of these strategies are most Federal nexus, critical habitat available. It requires that our biologists, appropriately taken through local designation would not afford any to the extent consistent with the Act and planning efforts, such as the additional regulatory protections under with the use of the best scientific and development of HCPs. The action of the Act. commercial data available, use primary designating critical habitat does not Critical habitat also provides non- and original sources of information as result in the creation of management regulatory benefits to the species by the basis for recommendations to plans, establish numerical population informing the public and private sectors designate critical habitat. When goals, and/or prescribe specific of areas that are important for species determining which areas are critical management actions, whether inside or recovery and where conservation habitat, a primary source of information outside of such designated critical actions would be most effective. should be the listing rule for the species. habitat. Specific management Designation of critical habitat can help Additional information may be obtained recommendations for areas designated focus conservation activities for a listed from a recovery plan, articles in peer- as critical habitat are most appropriately species by identifying areas that contain reviewed journals, conservation plans addressed in recovery, conservation, the physical and biological features developed by States and surveys and and management plans, and through essential for the conservation of that studies, and biological assessments or consultations and permits under section species, and can alert the public as well other unpublished materials. 7 and section 10 of the Act.

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Prudency Redetermination Sacramento Orcutt grass, and Greene’s provide for these species. The instances Section 4(a)(3) of the Act, as tuctoria), we believed that Federal of likely vandalism, though real, have amended, and implementing regulations agencies were aware of the species’ been relatively isolated. Consequently, (50 CFR 424.12) require that, to the presence and were already addressing we conclude that designating critical maximum extent prudent and conservation efforts where the species habitat will not increase incidences of determinable, we designate critical were found on Federal lands (62 FR habitat vandalism above current levels habitat at the time the species is 14338). for these species. In the absence of determined to be endangered or In 1995, the CDFG received a grant finding that critical habitat would threatened. At the time of the final from the U.S. Environmental Protection increase threats to a species, if there are listing determination (62 FR 34029, 62 Agency (EPA) to map vernal pools in any benefits to critical habitat FR 14338, 59 FR 48136, 57 FR 24192), particular areas for conservation designation, then a prudent finding is we found that designation of critical purposes (Vendlinski 2000). As a result warranted. The potential benefits habitat was not prudent for the vernal of this effort, the CDFG published a include: (1) Triggering consultations pool crustaceans and plants (excluding report which delineated 17 vernal pool under section 7 of the Act in new areas Solano grass). At the time of final listing regions throughout California (Keeler- where it would not otherwise occur of Solano grass (43 FR 44810), we did Wolf et al. 1998). In 1997, Robert because, for example, it is or has not make any determination about Holland’s original 1973–1974 map of become unoccupied or the occupancy is whether or not designation of critical vernal pools in the Central Valley was in question; (2) focusing conservation updated and the results were habitat was prudent. Our regulations (50 activities on the most essential areas; (3) documented Holland (1998). In 1998, CFR 424.12(a)(1)) state that designation providing educational benefits to State we published the Recovery Plan for of critical habitat is not prudent when or county governments or private Vernal Pools of Southern California one or both of the following situations entities; and, (4) preventing people from (Service 1998) which outlined recovery exist—(1) The species is threatened by causing inadvertent harm to the species. strategies for seven vernal pool species taking or other human activity, and Therefore, we conclude that the benefits (two vernal pool crustaceans and five identification of critical habitat can be of designating critical habitat on lands vernal pool plants) including the San essential for the conservation of the expected to increase the degree of such Diego fairy shrimp (Branchinecta vernal pool crustaceans and plants threat to the species, or (2) such sandiegonensis). The release of these outweigh the risks of increased designation of critical habitat would not data resulted in the widespread vandalism resulting from such be beneficial to the species. In our final distribution of information about vernal designation. Critical habitat for the 4 listing rules for the vernal pool pool habitat and its location to the vernal pool crustaceans and 11 vernal crustaceans and plants (excluding public and to local jurisdictions for pool plants addressed herein is prudent Solano grass), we believed that planning purposes. Since the release of and we are subsequently proposing publication of precise maps and these data, we have not documented an critical habitat for them in this proposed descriptions of critical habitat for the increase in the threats to the species rule. vernal pool crustaceans and plants addressed in this rule through All of the proposed critical habitat could make these species more vandalism, collection, habitat units contain one or more of the primary vulnerable to incidents of vandalism or destruction, or other means. In contrast, constituent elements for the vernal pool other human activities such as discing, we have witnessed an increase in public crustaceans or plants addressed in this grading, or filling (62 FR 34029, 62 FR interest in the species and their proposed rule. However, as stated 14338, 59 FR 48136, 57 FR 24192). In conservation through survey efforts by earlier, vernal pool crustaceans and addition, we determined that species experts, scientific research, plants occur in ephemeral pools that publication of precise maps and regional and local planning, and may not be present throughout a given descriptions of critical habitat for the educational outreach. Since listing of year or from year to year. vernal pool plants would increase the the vernal pool crustaceans and plants, In summary, in determining areas that vulnerability of these species to several vernal pool conservation are essential to conserve the species incidents of collection (62 FR 34029, 62 planning efforts have been initiated by addressed in this proposed rule, we FR 14338, 57 FR 24192). Therefore, we public agencies and non-government used the best scientific information determined that the designation of organizations. For example, in 1997 the available to us. The critical habitat areas critical habitat would increase the Framework Agreement for the described below constitute our best degree of threat to the vernal pool Interagency Vernal Pool Stewardship assessment of areas needed for the crustaceans and plants. We also Initiative was signed by a number of species’ conservation. determined that designation of critical Federal and State agencies; this Methods habitat was not beneficial for the vernal agreement encourages coordination of pool plant species (excluding Solano vernal pool conservation efforts on a In determining critical habitat for grass) because many populations of regional scale between the signatory vernal pool crustaceans and vernal pool these species were found on private agencies. plants we used the best scientific and lands (62 FR 34029, 62 FR 14338, 57 FR Based on the lack of an increase in commercial data available. This 24192). For Butte County meadowfoam vandalism threats, we have included data and information and Contra Costa goldfields, we reconsidered our evaluation of our contained in the final rules listing the believed that Federal involvement in the original prudency determination. We 15 species addressed herein, research areas where these plant species have determined that the threats to the and survey observations published in occurred could be identified without vernal pool crustaceans and plants and peer reviewed articles, the Vernal Pools designation of critical habitat (62 FR their habitat from the specific instances of Southern California Final Recovery 34029, 57 FR 24192). For eight of the of we identified in Plan (Service 1998), data collected for vernal pool plant species (succulent the final listing rules do not outweigh the development of HCPs, reports owl’s-clover, Hoover’s spurge, Colusa the broader educational, regulatory, and submitted by biologists holding section grass, San Joaquin Valley Orcutt grass, other possible benefits that a 10(a)(1)(A) recovery permits, data hairy Orcutt grass, slender Orcutt grass, designation of critical habitat would collected for the development of a

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Wetland Conservation Plan in Oregon, Solano County Farmlands and Open depend on year round inundation of reports and documents that are on file Space (2000) and East Bay Regional wetland habitats to survive. We in the Service’s field offices, and Parks District (2001). The specific layers conclude this element is essential to the personal discussions with experts used and the methodology employed for conservation of vernal pool crustaceans outside of the Service with extensive each unit is described within the unit because these species are ecologically knowledge of vernal pool species and descriptions. To determine land dependent on seasonal fluctuations, habitats. ownership within each unit we used such as absence or presence of water We utilized Geographic Information data from the State of California (Davis during specific times of the year, and System (GIS) data derived from a variety et al. 1998) and the U.S. Bureau of duration of inundation (59 FR 48136). of Federal, State, and local agencies, and Indian Affairs in Sacramento, California They cannot persist in perennial from private organizations and (2001). wetlands or wetlands that are inundated individuals. To identify where vernal for the majority of the year, nor can they Primary Constituent Elements pool species and habitats occur we persist without periodic seasonal evaluated GIS data of vernal pool In accordance with section 3(5)(A)(i) inundation. habitats by Holland (1998 and 2002), of the Act and regulations at 50 CFR The second primary constituent and species occurrences information 424.12, in determining which areas to element is essential to maintain the from the CNDDB (2001). We presumed propose as critical habitat, we consider aquatic phase of the vernal pool habitat. occurrences identified in CNDDB to be those physical and biological features The entire vernal pool complex, extant until we received documentation (primary constituent elements) that are including the pools, swales, and that the occurrences have been essential to the conservation of the associated uplands, is essential to extirpated. We also relied on species and that may require special support the aquatic functions of the unpublished species occurrence data management considerations or vernal pool habitat. Although the contained within our files. We produced protection. These features include, but uplands are not actually occupied by preliminary maps using GIS information are not limited to—space for individual vernal pool crustaceans, they that plotted species occurrences and and population growth, and for normal nevertheless are essential to the vernal pool habitats superimposed on behavior; food, water, air, light, conservation of vernal pool habitat and SPOT imagery (CNES/SPOT Image minerals, or other nutritional or crustaceans because they maintain the Corporation 1993–2000). The use of physiological requirements; cover or aquatic phase of vernal pools and SPOT imagery allowed us to identify shelter; sites for breeding, reproduction, swales. Associated uplands are also landmarks such as roads, cities, rivers, and dispersal; and habitats that are essential to provide nutrients that form and urban areas. protected from disturbance or are the basis of the vernal pool food chain, Because the minimum mapping unit representative of the historic including a primary food source for the of the Holland (1998 and 2002) vernal geographical and ecological vernal pool crustaceans. pool habitat data was 16 ha (40 ac) and distributions of a species. We have used vernal pool complexes the resolution of the SPOT imagery did When considering the designation of as the basis for determining populations not allow us to identify all vernal pool critical habitat for vernal pool of vernal pool crustaceans since the habitat areas, we then refined unit crustaceans, we focused on the species were first proposed for listing. boundaries based on additional GIS data principal biological and physical The final rule to list the four vernal pool layers when necessary and available, features that support vernal pool crustaceans states that ‘‘[t]he genetic including soils information from the crustacean feeding, growth, breeding, characteristics of the three fairy shrimp Soil Survey Geographic (SSURGO) data reproduction, and dispersal. Vernal pool and vernal pool tadpole shrimp, as well bases (U.S. Department of Agriculture crustaceans are found only in ephemeral as ecological conditions, such as (USDA) 1998–2001), and the California wetland habitats that contain water watershed contiguity, indicate that State Soil Geographic (STATSGO) data during the winter, when temperatures populations of these animals are defined bases (USDA 1994). We used geologic are suitable for cyst hatching and by pool complexes rather than by information developed by the California juvenile development. Individuals have individual vernal pools’ (Fugate 1992, Department of Mines and Geology never been found in riverine, marine, or Fugate 1998, King 1996). Therefore, the (CDMG) (2000) and Liss (2001). To other permanent bodies of water. most accurate indication of the identify the extent of flat or gently Generally, we identified two primary distribution and abundance of the four sloping topography where vernal pools constituent elements for all four vernal vernal pool crustaceans is the number of are found we evaluated Digital Elevation pool crustacean species addressed in inhabited vernal pool complexes. Models from the U.S. Geologic Survey this proposed rule. Each species has Individual vernal pools occupied by the (2000). primary constituent elements that differ four species listed herein are most We also used a number of local GIS slightly from these general elements appropriately referred to as data sets for specific areas, including discussed in later sections of this rule. ‘‘subpopulations’’ (59 FR 48137). Our information developed through the We determined that these proposed use of vernal pool complexes to define Riverside Multiple Species HCP and the primary constituent elements of critical populations of the four listed Vernal Pools of Southern California habitat provide for the physiological, crustaceans was upheld by the U.S. Final Recovery Plan (Service 1998), behavioral, and ecological requirements District Court in post-listing challenge habitat mapping for Butte County (EPA of the vernal pool crustaceans. to the listing (Building Industry 1994), Tehama County (2001), Shasta The first primary constituent element Association of Superior California). The County (2001) Placer County (Glazner provides the aquatic environment July 25, 1997, decision stated: ‘‘The 2001), Solano County (2000), Yolo required for cyst incubation and Court finds that the plaintiffs were on County (1995), Sacramento County hatching, growth and maturation, notice that the FWS would consider (1999) and San Joaquin County (2000) in reproduction, feeding, sheltering, and vernal pool complexes as a basis for California, and by the Rogue Valley dispersal, and the appropriate periods of determining fairy shrimp populations. Council of Governments in Oregon dessication for cyst dormancy and to The Court also concludes that the use of (Evans 2000). Other smaller scale eliminate predators such as bullfrogs, this methodology was neither arbitrary mapping efforts were reviewed from fish, and other aquatic predators that nor capricious.’’ The Court of Appeals

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for the D.C. Circuit upheld the district Schlising 1997), as well as a variety of sandstone pools have a pH near neutral, court’s decision, and the Supreme Court insect and vertebrate predator species. and very low alkalinity and has declined to hear the case. When considering the designation of conductivity (Eriksen and Belk 1999). In identifying specific primary critical habitat for Conservancy fairy Water temperatures in these pools have constituent elements for each of the four shrimp, we focused on the principal been measured between 10 and 18°C (50 vernal pool crustaceans, we expanded biological and physical features that and 64°F). In the other two locations in upon the general primary constituent support Conservancy fairy shrimp Merced and San Luis Obispo counties elements described above and focused feeding and growth, breeding and where longhorn fairy shrimp occur, they on the specific habitat requirements of reproduction, and dispersal. These are found in turbid, alkaline, grassland each individual vernal pool crustacean primary constituent elements are found vernal pools (Helm 1998, Eriksen and species. These habitat requirements and in areas that support vernal pools, Belk 1999). Water temperatures in these the specific primary constituent swales, or other ephemeral ponds and grassland vernal pools tend to be elements for each vernal pool depressions, and their associated warmer, between 10 and 28°C (50.0 to crustacean are described below. uplands. The primary constituent 82.0°F). However, no experimental elements for Conservancy fairy shrimp studies have been conducted to Conservancy Fairy Shrimp Primary include— determine the specific habitat Constituent Elements (1) Vernal pools, swales, and other requirements of longhorn fairy shrimp, The Conservancy fairy shrimp is ephemeral wetlands and depressions of and until research addressing the uniquely adapted to the ephemeral appropriate sizes and depths that tolerance of longhorn fairy shrimp to a conditions of its vernal pool habitat. typically become inundated during range of temperatures and water Helm (1998) found that the life span and winter rains and hold water for chemistries, its potential to occur in maturation rate of Conservancy fairy sufficient lengths of time necessary for other types of vernal pool habitats shrimp did not differ significantly from Conservancy fairy shrimp incubation, cannot be ruled out. other fairy shrimp species under the reproduction, dispersal, feeding, and Like other fairy shrimp, longhorn conditions he observed. Helm (1998) sheltering, including but not limited to fairy shrimp are highly adapted to the large, playa vernal pools often on basin found that Conservancy fairy shrimp variable conditions of vernal pool rim landforms and alkaline soils, but reached maturity in an average of 46 habitats. Longhorn fairy shrimp require which are dry during the summer and days, and lived for as long as 154 days. a minimum of 23 days, but averaged 43 do not necessarily fill with water every However, aquatic invertebrate growth days, to reach maturity in artificial year; and rates are largely controlled by water pools described by Helm (1998). (2) The geographic, topographic, and However, Helm (1998) found no temperature and can vary greatly edaphic features that support (Eriksen and Brown 1980, Helm 1998). significant differences between the life aggregations or systems of span or reproductive rate of longhorn Eriksen and Belk (1999) observe that hydrologically interconnected pools, fairy shrimp and other species of fairy Conservancy fairy shrimp produce large swales, and other ephemeral wetlands shrimp he studied. cohorts of offspring, and is an and depressions within a matrix of When considering the designation of ‘‘especially hyperactive swimmer and surrounding uplands that together form critical habitat for longhorn fairy filter feeder.’’ Conservancy fairy shrimp hydrologically and ecologically shrimp, we focused on the principal have only been observed to produce one functional units called vernal pool biological and physical features that cohort of offspring each wet season complexes. These features contribute to support longhorn fairy shrimp feeding (Eriksen and Belk 1999). the filling and drying of the vernal pool, and growth, breeding and reproduction, Observations suggest this species is and maintain suitable periods of pool and dispersal. These primary generally found in pools that are inundation, water quality, and soil constituent elements are found in areas relatively large and turbid (King et al. moisture for vernal pool crustacean that support vernal pools, swales, or 1996, Helm 1998, Eriksen and Belk hatching, growth and reproduction, and other ephemeral ponds and depressions 1999). Helm (1998) found that most dispersal, but not necessarily every year. and their associated uplands. The Conservancy fairy shrimp occurrences All of the above described primary primary constituent elements for the were generally within vernal pools constituent elements do not have to longhorn fairy shrimp include— formed on fertile, basin rim soils. These occur simultaneously within a unit for (1) Vernal pools, swales, and other pool types may be over several acres in the unit to constitute critical habitat for ephemeral wetlands and depressions of size, and are often alkaline. Soil types Conservancy fairy shrimp. We appropriate sizes and depths that where the species is known to occur determined the primary constituent typically become inundated during include Anita, Pescadero, Riz, Solano, elements of critical habitat for winter rains and hold water for Edminster, San Joaquin, and Peters soil Conservancy fairy shrimp based on sufficient lengths of time necessary for series. studies on their habitat and population longhorn fairy shrimp incubation, Conservancy fairy shrimp occur with biology including but not limited to— reproduction, dispersal, feeding, and several other vernal pool crustaceans, Eng et al. 1990, Gallagher 1996, sheltering, including but not limited to including vernal pool fairy shrimp, Alexander and Schlising 1997, Helm sandstone outcrop pools and turbid California linderiella, and vernal pool 1998, Eriksen and Belk 1999. alkaline pools, but which are dry during tadpole shrimp (King et al. 1996, the summer and do not necessarily fill Eriksen and Belk 1999, Helm 1998). In Longhorn Fairy Shrimp Primary with water every year; and general, Conservancy fairy shrimp have Constituent Elements (2) The geographic, topographic, and very large populations within a given Longhorn fairy shrimp are known edaphic features that support pool, and is usually the most abundant only from three general locations, and aggregations or systems of fairy shrimp when more than one fairy each of these sites contain very different hydrologically interconnected pools, shrimp species is present (Helm 1998, types of vernal pool habitats. Longhorn swales, and other ephemeral wetlands Eriksen and Belk 1999). Conservancy fairy shrimp in Contra Costa and and depressions within a matrix of fairy shrimp are eaten by vernal pool Alameda counties live in small, clear, surrounding uplands that together form tadpole shrimp (Alexander and sandstone outcrop pools. These hydrologically and ecologically

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functional units called vernal pool and Northern Basalt Flow vernal pools inundation, water quality, and soil complexes. These features contribute to which formed on a variety of geologic moisture for vernal pool crustacean the filling and drying of the vernal pool, formations and soil types (CNDDB hatching, growth and reproduction, and and maintain suitable periods of pool 2001). Although vernal pool fairy dispersal, but not necessarily every year. inundation, water quality, and soil shrimp have been collected from large All of the above described primary moisture for vernal pool crustacean vernal pools, including one exceeding constituent elements do not have to hatching, growth and reproduction, and 10 ha (25 ac) in area (Eriksen and Belk occur simultaneously within a unit for dispersal, but not necessarily every year. 1999), they are most frequently found in the unit to constitute critical habitat for All of the above described primary pools measuring less than 0.02 ha (0.05 one of these species. We determined the constituent elements do not have to ac) in area (Helm 1998, Gallagher 1996). primary constituent elements of critical occur simultaneously within a unit for The species occurs at elevations from 10 habitat for vernal pool fairy shrimp the unit to constitute critical habitat for m (33 ft) to 1,220 m (4,003 ft) (Eng et based on studies on their habitat and longhorn fairy shrimp. We determined al. 1990), and is typically found in pools population biology including but not the primary constituent elements of with low to moderate amounts of limited to—Eng et al. 1990, Fugate 1992, critical habitat for longhorn fairy shrimp salinity or total dissolved solids (Keeley Gallagher 1996, Fugate 1998, Helm based on studies on their habitat and 1984, Syrdahl 1993). Vernal pools are 1998, and Eriksen and Belk 1999. population biology including but not mostly rain fed, resulting in low Vernal Pool Tadpole Shrimp Primary limited to— Eng et al. 1990, Fugate nutrient levels and dramatic daily Constituent Elements 1992, Gallagher 1996, Fugate 1998, fluctuations in pH, dissolved oxygen, Helm 1998, and Eriksen and Belk 1999. and carbon dioxide (Keeley and Zedler Although the vernal pool tadpole 1998). Although there are many shrimp is adapted to survive in Vernal Pool Fairy Shrimp Primary ephemeral vernal pool habitat, the Constituent Elements observations of the environmental conditions where vernal pool fairy species has a relatively long life span Vernal pool fairy shrimp generally shrimp have been found, there have compared to other vernal pool will not hatch until water temperatures been no experimental studies crustaceans. Helm (1998) found that ° ° drop to below 10 C (50 F) (Gallagher investigating the specific habitat vernal pool tadpole shrimp lived 1996, Helm 1998). Vernal pool fairy requirements of this species. significantly longer than any other shrimp are capable of hatching multiple When considering the designation of species observed under the same times within a single wet season if critical habitat for vernal pool fairy conditions except California linderiella conditions are appropriate. Helm (1998) shrimp, we focused on the principal (Linderiella occidentalis). Vernal pool observed 6 separate hatches of vernal biological and physical features that tadpole shrimp continue growing pool fairy shrimp within a single wet support vernal pool fairy shrimp feeding throughout their lives, periodically season, and Gallagher (1996) observed 3 and growth, breeding and reproduction, molting their shells. These shells can separate hatches of vernal pool fairy and dispersal. These primary often be found in vernal pools where the shrimp in vernal pools in Butte County. constituent elements are found in areas species occurs. Helm (1998) found that Vernal pool fairy shrimp have been that support vernal pools, swales, or vernal pool tadpole shrimp took a documented to live for as long as 147 other ephemeral ponds and depressions minimum of 25 days to mature and the days Helm (1998), but their life cycle and their associated uplands. The mean age at first reproduction was 54 and longevity is dependant upon water primary constituent elements for vernal days. Other researchers have observed temperature as well as other pool fairy shrimp include— that vernal pool tadpole shrimp environmental factors. Vernal pool fairy (1) Vernal pools, swales, and other generally take between 21 to 28 days to shrimp can reproduce in as few as 18 ephemeral wetlands and depressions of mature (Ahl 1991, King 1996). Ahl days at optimal conditions of 20°C appropriate sizes and depths that (1991) found that reproduction did not (68°F) and can complete their life cycle typically become inundated during begin until individuals were larger than in as little as 63 days (Gallagher 1996, winter rains and hold water for 10 mm (0.39 in) carapace length. Helm 1998). However, maturation and sufficient lengths of time necessary for Variation in growth and maturation reproduction rates of vernal pool vernal pool fairy shrimp incubation, rates may be a result of differences in crustaceans are controlled by water reproduction, dispersal, feeding, and water temperature, which strongly temperature and can vary greatly sheltering, including but not limited to influences the growth rates of aquatic (Eriksen and Brown 1980, Helm 1998). Northern Hardpan, Northern Claypan, invertebrates. Helm (1998) observed that vernal pool Northern Volcanic Mud Flow, and Vernal pool tadpole shrimp occur in fairy shrimp did not reach maturity Northern Basalt Flow vernal pools a wide variety of vernal pool habitats until 41 days at water temperatures of formed on a variety of geologic (Helm 1998). They have been found in 15°C (59°F). Vernal pool fairy shrimp formations and soil types, but which are pools with water temperatures ranging have been collected at water dry during the summer and do not from 10°C (50°F) to 29°C (84°F) and pH temperatures as low as 4.5°C (40°F) necessarily fill with water every year; ranging from 6.2 to 8.5 (Syrdahl 1993, (Eriksen and Belk 1999), however, the and King 1996). However, vernal pools species has not been found in water (2) The geographic, topographic, and exhibit daily and seasonal fluctuations temperatures above about 23°C (73°F) edaphic features that support in pH, temperature, dissolved oxygen, (Helm 1998, Eriksen and Belk 1999). aggregations or systems of and other water chemistry Vernal pool fairy shrimp occupy a hydrologically interconnected pools, characteristics (Syrdahl 1993, Scholnick variety of different vernal pool habitats, swales, and other ephemeral wetlands 1995, Keeley 1998a). Determining vernal from small, clear, sandstone rock pools and depressions within a matrix of pool tadpole shrimp habitat to large, turbid, alkaline, grassland surrounding uplands that together form requirements is not possible based on valley floor pools (Eng et al. 1990, Helm hydrologically and ecologically anecdotal evidence, and the tolerances 1998, CNDDB 2001). The pool types functional units called vernal pool of this species to specific environmental where the species has been found complexes. These features contribute to conditions have yet to be determined. include Northern Hardpan, Northern the filling and drying of the vernal pool, Although vernal pool tadpole shrimp Claypan, Northern Volcanic Mud Flow, and maintain suitable periods of pool are found on a variety of geologic

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formations and soil types, Helm (1998) General Primary Constituent Elements vernal pool plants must flower and found that over 50 percent of vernal for Vernal Pool Plants produce seeds, is also largely controlled pool tadpole shrimp occurrences were The primary constituent elements of by interactions between the vernal pool on high terrace landforms and Redding critical habitat for vernal pool plants are and the surrounding uplands (Hanes et and Corning soils. Platenkamp (1998) those habitat components that are al. 1990, Hanes and Stromberg 1998). found that vernal pool tadpole shrimp essential for the primary biological In identifying specific primary presence differed significantly between needs of germination, growth, constituent elements for each of the geomorphic surfaces at Beale Air Force reproduction, and dispersal. All of the eleven vernal pool plant species Base and the species was most likely to vernal pool plants addressed in this addressed in this proposed rule, we be found on Riverbank formation. proposed rule are found only in expanded upon the general primary When considering the designation of ephemeral wetlands including vernal constituent elements described above to critical habitat for vernal pool tadpole pools and swales. None of these species focus on the specific habitat shrimp, we focused on the principal are known to occur in permanent requirements of each of the eleven individual species. These habitat biological and physical features that wetlands, and none are found in strictly requirements and the specific primary support vernal pool tadpole shrimp upland areas that are never inundated. constituent elements for each species feeding and growth, breeding and Generally, we identified two primary are described below. reproduction, and dispersal. These constituent elements for all eleven primary constituent elements are found vernal pool plants addressed in this Butte County Meadowfoam Primary in areas that support vernal pools, proposed rule. Each species has primary Constituent Elements constituent elements that differ slightly swales, or other ephemeral ponds and The swales and vernal pools where depressions and their associated from these general elements discussed in later sections of this rule. We Butte County meadowfoam grows are on uplands. The primary constituent intermediate fan terraces (Kelley and elements for vernal pool fairy shrimp determined that these proposed primary constituent elements of critical habitat Associates Environmental Sciences include: provide for the physiological and 1992) in annual grasslands with a mima (1) Vernal pools, swales, and other ecological requirements of the vernal mound topography. Large cobbles are ephemeral wetlands and depressions of pool plants. present throughout the pools and swales appropriate sizes and depths that The first primary constituent element (Jokerst 1989). These pools are typically become inundated during provides the necessary soil moisture associated with Tuscan, Redbluff, winter rains and hold water for and aquatic environment required for Riverbank, and Modesto geologic sufficient lengths of time necessary for seed germination, growth and formations, and most of them occur on vernal pool tadpole shrimp incubation, maturation, reproduction, and dispersal, soils of the Tuscan-Anita and the reproduction, dispersal, feeding, and and the appropriate periods of dry- Redding-Igo complexes. Anita and Igo sheltering, but which are dry during the down for seed dormancy. Both the wet soils are confined to the pools and summer and do not necessarily fill with and dry phases of the vernal pool help swales. Tuscan and Redding soils are water every year; including but not to reduce competition with strictly restricted to the mounds. Anita soils can limited to vernal pools on Redding and terrestrial or strictly be up to 50 cm (19.7 in) deep, whereas Corning soils on high terrace landforms, species. The wet phase provides the Igo soils are no more than 18 cm (7.1 in) and necessary cues for germination and deep; the two soils are underlain by iron-silica cemented and indurated (2) The geographic, topographic, and growth, while the drying phase allows hardpan, respectively (Kelley and edaphic features that support the vernal pool plants to flower and Associates Environmental Sciences aggregations or systems of produce seeds. We conclude this 1993). Butte County meadowfoam has hydrologically interconnected pools, element is essential to the conservation of the vernal pool plants because these been observed on Anita clay soils swales, and other ephemeral wetlands annually regardless of rainfall but and depressions within a matrix of species are ecologically dependent on seasonal fluctuations, such as absence appears on Igo soils only in years of surrounding uplands that together form above average rainfall (Kelley and hydrologically and ecologically or presence of water during specific times of the year, and duration of Associates Environmental Sciences functional units called vernal pool inundation and the rate of drying of 1992a, Crompton 1993, Schonholtz in complexes. These features contribute to their habitats. They cannot persist in litt. 1995), presumably because the the filling and drying of the vernal pool, perennial wetlands or wetlands that are former can hold approximately twice as and maintain suitable periods of pool inundated for the majority of the year, much moisture (Kelley and Associates inundation, water quality, and soil nor can they persist without periodic Environmental Sciences 1993). moisture for vernal pool crustacean seasonal inundation. Confirmed occurrences have been found hatching, growth and reproduction, and The second primary constituent at 50 to 90 m (165 to 300 ft) in elevation dispersal, but not necessarily every year. element is essential to maintain both the (McNeill and Brown 1979, CNDDB All of the above described primary aquatic phase and the drying phase of 2001). constituent elements do not have to the vernal pool habitat. Although the The primary constituent elements of occur simultaneously within a unit for vernal pool plants addressed in this critical habitat for Butte County the unit to constitute critical habitat for proposed rule do not occur in the meadowfoam are those habitat vernal pool tadpole shrimp. We strictly upland areas surrounding vernal components that are essential for the determined the primary constituent pools, they are dependent on these primary biological needs of germination, elements of critical habitat for vernal upland areas to maintain the aquatic growth, reproduction, and dispersal. pool tadpole shrimp based on studies on and drying phases of the vernal pool. These primary constituent elements are their habitat and population biology The germination of vernal pool plants is found in areas that support vernal pools, including but not limited to—Longhurst dependant on the timing and length of swales, or other ephemeral ponds and 1955, Lynch 1966, Ahl 1991, King 1996, inundation of the vernal pool. The rate depressions and their associated and Helm 1998. of vernal pool drying, during which uplands. The primary constituent

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elements for Butte County meadowfoam geologic formations for sites where and dispersal, but not necessarily every include: Contra Costa goldfields occurs have not year. (1) Vernal pools, swales, and other yet been determined. Most occurrences All of the above described primary ephemeral wetlands and depressions of of Contra Costa goldfields are at constituent elements do not have to appropriate sizes and depths and the elevations of 2 to 61 m (6 to 200 ft), but occur simultaneously within a unit for adjacent upland margins of these the recently discovered Monterey the unit to constitute critical habitat for depressions that sustain Butte County County occurrences are at 122 m (400 ft) Contra Costa goldfields. We determined meadowfoam germination, growth and and one Napa County occurrence is at the primary constituent elements of reproduction, including but not limited 445 m (1,460 ft) elevation (CNDDB critical habitat for Contra Costa to vernal pool swales and the margins 2001). goldfields based on studies on their of vernal pools on the Tuscan, Redbluff, The soil types that maintain these habitat and population biology Riverbank, and Modesto geologic vernal pool habitats for Contra Costa including but not limited to—Ornduff formations underlain by Tuscan-Anita goldfields have not yet been identified 1966, Ornduff 1979, Crawford and and Igo-Redding complex soils among for most localities. The soil series from Ornduff 1989, Skinner and Pavlik 1994. others. These habitats typically become which it is known are Aiken, Antioch, Hoover’s Spurge Primary Constituent inundated during winter rains, but are Concepcion, Conejo, Crispin, Haire, Elements dry during the summer and do not Linne, Los Robles, Rincon, Solano, and necessarily fill with water every year; San Ysidro, plus the Arnold-Santa Ynez, Vernal pools from which Hoover’s and Hambright-rock outcrop, and Los Osos spurge has been reported are classified (2) The associated watershed(s) and complexes. Soil textures, where known, as Northern Hardpan and Northern hydrologic features, including the pool are clays or loams. At least in Solano Claypan vernal pools (Sawyer and basin, swales, and surrounding uplands County and on the shores of San Keeler-Wolf 1995). The pools (which may vary in extent depending on Francisco Bay, Contra Costa goldfields supporting this species vary in size from pool size and depth, soil type and grows in alkaline or saline-alkaline sites 0.19 to 243 ha (0.47 to 600 ac), with a depth, hardpan or claypan type and (Baye in litt. 2000a, Baye in litt. 2000b, median area of 0.58 ha (1.43 ac) (Stone extent, topography, and climate) that CNDDB 2001). et al. 1988). Many occurrences consist contribute to the filling and drying of The primary constituent elements of of multiple pools that vary in area and the vernal pool or ephemeral wetland, critical habitat for Contra Costa in depth, yet not all pools at a site and that maintain suitable periods of goldfields are those habitat components support Hoover’s spurge. Deeper pools pool inundation, water quality, and soil that are essential for the primary apparently provide better habitat for this moisture for Butte County meadowfoam biological needs of germination, growth, species because the duration of germination, growth and reproduction, reproduction, and dispersal. These inundation is longer. This species may and dispersal, but not necessarily every primary constituent elements are found occur along the margins or in the year. in areas that support vernal pools, deepest portions of the dried pool bed All of the above described primary swales, or other ephemeral ponds and (Stone et al. 1988, Alexander and constituent elements do not have to depressions and their associated Schlising 1997). A particularly occur simultaneously within a unit for uplands. The primary constituent important feature of Hoover’s spurge the unit to constitute critical habitat for elements for Contra Costa goldfields microhabitat, at least in the deeper Butte County meadowfoam. We include— pools, is that it is nearly devoid of other determined the primary constituent (1) Vernal pools, swales, moist flats, vegetation, and thus competition from elements of critical habitat for Butte and other ephemeral wetlands and other plants is reduced (Stone et al. County meadowfoam based on studies depressions of appropriate sizes and 1988). of their habitat and population biology depths and the adjacent upland margins Vernal pools supporting Hoover’s including but not limited to—Kalin- of these depressions that sustain Contra spurge occur mostly on alluvial fans or Arroyo 1973, Dole 1988, Jokerst 1989, Costa goldfields germination, growth terraces of ancient rivers or streams, Kelley and Associates Environmental and reproduction, including, but not with a few on the rim of the Central Sciences 1992a, and Crompton 1993. limited to, vernal pools on clay soils Valley basin. Hoover’s spurge is found from a variety of soils series, rock on a wide variety of soils, which range Contra Costa Goldfields Primary outcrop pools on basalt flows, and in texture from clay to sandy loam. Soil Constituent Elements vernal pools in saline alkaline transition series from which it has been reported Contra Costa goldfields typically zones with tidal marsh habitats. All of include Anita, Laniger, Lewis, Madera, grows in vernal pools, swales, moist these habitats typically become Meikle, Riz, Tuscan, Whitney, Willows. flats, and depressions within a grassland inundated during winter rains, but are All of these soils may not be equally matrix (CNDDB 2001). However, several dry during the summer and do not suitable for this species, however. For historical collections were from necessarily fill with water every year; example, in one Vina Plains pool, populations growing in the saline- and Hoover’s spurge grew primarily in the alkaline transition zone between vernal (2) The associated watershed(s) and portion that was underlain by Tuscan pools and tidal marshes on the eastern hydrologic features, including the pool loam and was nearly absent from the margin of the San Francisco Bay (Baye basin, swales, and surrounding uplands portion underlain by Anita clay USFWS in litt. 2000a). The herbarium (which may vary in extent depending on (Alexander and Schlising 1997). sheet for one of the San Francisco Bay pool size and depth, soil type and In the Sacramento Valley occupied specimens notes that the species also depth, hardpan or claypan type and pools are on acidic soils over iron-silica grew in evaporating ponds used to extent, topography, and climate) that cemented hardpan. Most pools concentrate salt (Baye in litt. 2000b). contribute to the filling and drying of supporting Hoover’s spurge in the San The vernal pool types from which this the vernal pool or ephemeral wetland, Joaquin Valley are on neutral to saline- species has been reported are Northern and that maintain suitable periods of alkaline soils over lime-silica cemented Basalt Flow, Northern Claypan, and pool inundation, water quality, and soil hardpan or claypan (Broyles 1987, Stone Northern Volcanic Ashflow (Sawyer and moisture for Contra Costa goldfields et al. 1988, Sawyer and Keeler-Wolf Keeler-Wolf 1995). The landforms and germination, growth and reproduction, 1995, CNDDB 2001). Occurrences of

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Hoover’s spurge have been reported However, it is found on Northern Basalt (which may vary in extent depending on from elevations ranging from 26 m (85 Flow vernal pools on Hideaway soils pool size and depth, soil type and ft) in Glenn County to 128 m (420 ft) in series at one location in the San Joaquin depth, hardpan or claypan type and Tehama County (CNDDB 2002). Valley. It is known from both small and extent, topography, and climate) that The primary constituent elements of large pools (EIP Associates 1999). contribute to the filling and drying of critical habitat for Hoover’s spurge are Although not all pools occupied by this the vernal pool or ephemeral wetland, those habitat components that are taxon have been studied in detail, and that maintain suitable periods of essential for the primary biological Stebbins et al. (1995) collected data on pool inundation, water quality, and soil needs of germination, growth, six occupied pools in Fresno and moisture for succulent owl’s-clover reproduction, and dispersal. These Madera counties. Some were typical germination, growth, reproduction, and primary constituent elements are found ‘‘bowl-like’’ pools, whereas others were dispersal, but not necessarily every year. in areas that support vernal pools, more similar to swales. This subspecies All of the above described primary swales, or other ephemeral ponds and has been reported from pools with both constituent elements do not have to depressions and their associated long and short inundation periods (EIP occur simultaneously within a unit for uplands. The primary constituent Associates 1999) and from both shallow the unit to constitute critical habitat for elements for Hoover’s spurge include— and ‘‘abnormally deep vernal pools,’’ succulent owl’s-clover. We determined (1) Vernal pools, swales, and other but approximate depth of these pools the primary constituent elements of ephemeral wetlands and depressions of was not given (CNDDB 2001). critical habitat for succulent owl’s- appropriate sizes and depths and the Soil series supporting succulent clover based on studies of their habitat adjacent upland margins of these owl’s-clover include Amador, and population biology including but depressions that sustain Hoover’s Anderson, Corning, Fallbrook, Keyes, not limited to—Hoover 1968, Chuang spurge germination, growth and Pentz, Ramona, Redding, San Joaquin, and Heckard 1991, Chuang and Heckard reproduction, including but not limited Vista, and Yokohl, as well as the 1993, and EIP Associates 1999. to vernal pools formed on neutral to Pollasky-Montpellier complex. Soil Colusa Grass Primary Constituent saline-alkaline soils over lime-silica textures at those sites range from Elements cemented hardpan or claypan, or on extremely stony loam to loamy clay. In acidic soils over iron-silica cemented the proposed UC Merced campus and Colusa grass has the broadest hardpan, that typically become community area, the species is found ecological range among the Orcuttieae. inundated during winter rains, but are primarily on Redding gravelly loam; It occurs on the rim of alkaline basins dry during the summer and do not however, Corning, Keyes, and Pentz in the Sacramento and San Joaquin necessarily fill with water every year; soils also contain occurrences of the valleys, as well as on acidic soils of and species (EIP Associates 1999). alluvial fans and stream terraces along (2) The associated watershed(s) and Populations of succulent owl’s-clover the eastern margin of the San Joaquin hydrologic features, including the pool have been reported from elevations of Valley and into the adjacent foothills basin, swales, and surrounding uplands 24 m (80 ft) at the San Joaquin County (Stone et al. 1988). Colusa grass has (which may vary in extent depending on site to 700 m (2,300 ft) at Kennedy Table been found in Northern Claypan and pool size and depth, soil type and in Madera County (CNDDB 2001). Northern Hardpan vernal pool types depth, hardpan or claypan type and The primary constituent elements of (Sawyer and Keeler-Wolf 1995) within extent, topography, and climate) that critical habitat for succulent owl’s- rolling grasslands (Crampton 1959). contribute to the filling and drying of clover are those habitat components that This species typically grows in the the vernal pool or ephemeral wetland, are essential for the primary biological deepest portion of the pool (Crampton and that maintain suitable periods of needs of germination, growth, 1959) but also may occur on the margins pool inundation, water quality, and soil reproduction, and dispersal. These (Hoover 1937, Stone et al. 1988). Deeper moisture for Hoover’s spurge primary constituent elements are found pools are most likely to provide the long germination, growth and reproduction, in areas that support vernal pools, inundation period required for and dispersal, but not necessarily every swales, or other ephemeral ponds and germination (EIP Associates 1999). year. depressions and their associated Several soil series maintain the vernal All of the above described primary uplands. The primary constituent pool habitats where Colusa grass is constituent elements do not have to elements for succulent owl’s-clover found. Solano and Yolo county sites occur simultaneously within a unit for include— where Colusa grass grows contain vernal the unit to constitute critical habitat for (1) Vernal pools, swales, and other pools formed by soils in the Pescadero Hoover’s spurge. We determined the ephemeral wetlands and depressions of series, whereas those in central Merced primary constituent elements of critical appropriate sizes and depths and the County are formed by soils in the habitat for Hoover’s spurge based on adjacent upland margins of these Landlow and Lewis series (Silveira in studies on their habitat and population depressions that sustain succulent litt. 2000). The eastern Merced County biology including but not limited to— owl’s-clover germination, growth and and Stanislaus County sites include Broyles 1987, Stone et al. 1988, and reproduction, including but not limited vernal pool habitats formed by the Bear Alexander and Schlising 1997. to hardpan vernal pools on alluvial Creek, Corning, Greenfield, Keyes, terraces and San Joaquin, Redding, Meikle, Pentz, Peters, Raynor, Redding, Succulent Owl’s-Clover Primary Corning, Keyes, and Pentz soils series, and Whitney series (Stone et al. 1988, Constituent Elements among others, and northern basalt flow EIP Associates 1999, CNDDB 2002). The Succulent owl’s-clover is known vernal pools on Hideaway soils series, type and composition of impermeable mostly from vernal pools occurring on that typically become inundated during layers underlying occupied vernal pools alluvial terrace landforms. These pool winter rains, but are dry during the also vary, ranging from claypan in the types have been described as both summer and do not necessarily fill with Sacramento Valley to lime-silica Northern Claypan and Northern water every year; and cemented hardpan in the San Joaquin Hardpan vernal pools (Sawyer and (2) The associated watershed(s) and Valley basins, to iron-silica cemented Keeler-Wolf 1995) within annual hydrologic features, including the pool hardpan in the eastern margin of the grassland communities (CNDDB 2001). basin, swales, and surrounding uplands San Joaquin Valley. Tuffaceous

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alluvium underlies some eastern San silica cemented hardpan, tuffaceous (2) The associated watershed(s) and Joaquin Valley pools and intermittent alluvium, or claypan (Stone et al. 1988). hydrologic features, including the pool streams where Colusa grass grows Of pools where the species was known basin, swales, and surrounding uplands (Stone et al. 1988). to be extant in 1987, the median size (which may vary in extent depending on The primary constituent elements of was 0.6 ha (1.5 ac), with a range of 50 pool size and depth, soil type and critical habitat for Colusa grass are those m2 (0.01 ac) to 3.4 ha (8.4 ac) (Stone et depth, hardpan or claypan type and habitat components that are essential for al. 1988). Stone et al. (1988) noted that extent, topography, and climate) that the primary biological needs of Greene’s tuctoria grew in shallower contribute to the filling and drying of germination, growth, reproduction, and pools than other members of the tribe or the vernal pool or ephemeral wetland, dispersal. These primary constituent on the shallow margins of deeper pools, and that maintain suitable periods of elements are found in areas that support but they did not quantify pool depth. At pool inundation, water quality, and soil vernal pools, swales, or other ephemeral the Vina Plains, Greene’s tuctoria grew moisture for Greene’s tuctoria ponds and depressions and their in pools of ‘‘intermediate’’ size, which germination, growth and reproduction, associated uplands. The primary dried in April or early May of 1995 and dispersal, but not necessarily every constituent elements for Colusa grass (Alexander and Schlising 1997). The year. include— Central Valley pools containing All of the above described primary (1) Vernal pools, swales, and other Greene’s tuctoria are (or were) in constituent elements do not have to ephemeral wetlands and depressions of grasslands; the Shasta County occur simultaneously within a unit for appropriate sizes and depths and the occurrence is surrounded by pine forest the unit to constitute critical habitat for adjacent upland margins of these (CNDDB 2001). Occupied pools in the Greene’s tuctoria. We determined the depressions that sustain Colusa grass Central Valley are (or were) at elevations primary constituent elements of critical germination, growth and reproduction, of 33.5 to 134 m (110 to 440 ft) (Stone habitat for Greene’s tuctoria based on and that typically become inundated et al. 1988), whereas the Shasta County studies on its habitat and population during winter rains, including but not occurrence is at 1,067 m (3,500 ft) biology including but not limited to— limited to vernal pools formed on the (CNDDB 2001). Griggs 1980, Griggs and Jain 1983, Stone rim of alkaline basins in the Sacramento In Tehama and Butte counties, et al. 1988, Keeley 1988, and Alexander and San Joaquin valleys, as well as on Greene’s tuctoria grows mostly on Anita and Schlising 1997. acidic soils of alluvial fans and stream clay and Tuscan loam soils, with one terraces along the eastern margin of the Hairy Orcutt Grass Primary Constituent occurrence on Tuscan stony clay loam. San Joaquin Valley and into the adjacent Elements Soil types are not certain for several foothills. All of these pool types are dry This species is found within vernal other occurrences in this region; one is during the summer and do not pools formed on high or low stream on either the Rocklin or the San Joaquin necessarily fill with water every year; terraces and alluvial fans (Stone et al. series, and the others are unknown. The and 1988). The median size of occupied (2) The associated watershed(s) and single occurrence in the central portion pools measured in the late 1980’s was hydrologic features, including the pool of the Central Valley, near the Glenn 1.7 ha (4.2 ac), with a range of 0.34 to basin, swales, and surrounding uplands and Colusa county line, is on strongly 250 ha (0.8 to 617.5 ac) (Stone et al. (which may vary in extent depending on saline-alkaline Willows clay (Silveira in 1988). At the Vina Plains, hairy Orcutt pool size and depth, soil type and litt. 2000). On the eastern margin of the grass was found growing only in pools depth, hardpan or claypan type and San Joaquin Valley, Greene’s tuctoria is that held water until May, June, or July extent, topography, and climate) that known to grow on a number of different in 1995, not in those that dried in April contribute to the filling and drying of soil series including Archerdale, Bear (Alexander and Schlising 1997). This the vernal pool or ephemeral wetland, Creek, Exeter, Meikle, Ramona, Raynor, species is known from elevations of 26 and that maintain suitable periods of Redding, and San Joaquin. m (85 ft) in Glenn County to 123 m (405 pool inundation, water quality, and soil The primary constituent elements of ft) in Madera County (CNDDB 2001). moisture for Colusa grass germination, critical habitat for Greene’s tuctoria are Hairy Orcutt grass is found on both growth and reproduction, and dispersal, those habitat components that are acidic and saline-alkaline soils, in pools but not necessarily every year. essential for the primary biological with an iron-silica cemented hardpan or All of the above described primary needs of germination, growth, claypan. In Tehama and Butte counties, constituent elements do not have to reproduction, and dispersal. These pools supporting hairy Orcutt grass occur simultaneously within a unit for primary constituent elements are found occur on the Anita and Tuscan soil the unit to constitute critical habitat for in areas that support vernal pools, series (Stone et al. 1988, CNDDB 2001). Colusa grass. We determined the swales, or other ephemeral ponds and At one pool in the Vina Plains that primary constituent elements of critical depressions and their associated spans both Anita clay and Tuscan loam habitat for Colusa grass based on studies uplands. The primary constituent soils, hairy Orcutt grass was found on their habitat and population biology elements for Greene’s tuctoria include— growing primarily on the Anita clay including but not limited to—Crampton (1) Vernal pools, swales, and other (Alexander and Schlising 1997). At the 1976, Griggs 1980, Reeder 1982, Griggs ephemeral wetlands and depressions of Sacramento National Wildlife Refuge, and Jain 1983, Keeley 1998a, and Stone appropriate sizes and depths and the hairy Orcutt grass occurs on the et al. 1988. adjacent upland margins of these Willows and Riz soil series (Silveira in depressions that sustain Greene’s litt. 2000), whereas in the Southern Greene’s Tuctoria Primary Constituent tuctoria germination, growth and Sierra Foothills Vernal Pool Region it Elements reproduction, including but not limited occurs on the Cometa, Greenfield, Greene’s tuctoria has been found in to Northern Claypan, Northern Hardpan Hanford, Meikle, and Whitney soil three types of vernal pools: Northern and Northern Basalt flow vernal pools, series (Stone et al. 1988). Basalt Flow, Northern Claypan, and that typically become inundated during The primary constituent elements of Northern Hardpan (Sawyer and Keeler- winter rains, but are dry during the critical habitat for hairy Orcutt grass are Wolf 1995, Stone et al. 1988). Occupied summer and do not necessarily fill with those habitat components that are pools are or were underlain by iron- water every year; and essential for the primary biological

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needs of germination, growth, are acidic with an iron-silica hardpan San Joaquin Valley Orcutt Grass reproduction, and dispersal. These (Stone et al. 1988), and the pools Primary Constituent Elements primary constituent elements are found contain numerous cobbles (Crampton San Joaquin Valley Orcutt grass in areas that support vernal pools, 1959, Stone et al. 1988). Four of the occurs on alluvial fans, high and low swales, or other ephemeral ponds and known occurrences are on soils in the stream terraces (Stone et al. 1988), and depressions and their associated Redding series, two are on Red Bluff- tabletop lava flows (Stebbins et al. 1995, uplands. The primary constituent Redding complex soils, two are (or CNDDB 2001). This species has been elements for hairy Orcutt grass were) on Xerarents-urban land-San reported in Northern Claypan, Northern include— Joaquin complex, and one is on Corning Hardpan, and Northern Basalt Flow (1) Vernal pools, swales, and other complex soils. vernal pools (Sawyer and Keeler-Wolf ephemeral wetlands and depressions of 1995) within rolling grassland appropriate sizes and depths and the The primary constituent elements of (Crampton 1959). Occupied pools range adjacent upland margins of these critical habitat for Sacramento Orcutt depressions that sustain hairy Orcutt grass are those habitat components that in surface area from 0.014 to 4.9 ha (0.05 grass germination, growth and are essential for the primary biological to 12.1 ac), with a median area of 0.62 reproduction, including but not limited needs of germination, growth, ha (1.54 ac) (Stone et al. 1988). San to features occurring on both acidic and reproduction, and dispersal. These Joaquin Valley Orcutt grass has been saline-alkaline soils, with an iron-silica primary constituent elements are found reported from elevations of 30 to 755 m cemented hardpan or claypan, and that in areas that support vernal pools, (100 to 2,475 ft); the highest elevation typically become inundated during swales, or other ephemeral ponds and sites are those on the volcanic tabletops winter rains, but are dry during the depressions and their associated of Fresno and Madera counties summer and do not necessarily fill with uplands. The primary constituent (Stebbins et al. 1995, CNDDB 2001). water every year; and elements for Sacramento Orcutt grass The pools where San Joaquin Valley (2) The associated watershed(s) and include— Orcutt grass is known to occur form on acidic soils that vary in texture from hydrologic features, including the pool (1) Vernal pools, swales, and other basin, swales, and surrounding uplands clay to sandy loam. Soil series ephemeral wetlands and depressions of (which may vary in extent depending on represented include the Hideaway series appropriate sizes and depths and the pool size and depth, soil type and on Fresno-Madera County volcanic adjacent upland margins of these depth, hardpan or claypan type and tabletops, and Amador, Cometa, extent, topography, and climate) that depressions that sustain Sacramento Corning, Greenfield, Los Robles, contribute to the filling and drying of Orcutt grass germination, growth and Madera, Peters, Pollasky-Montpellier the vernal pool or ephemeral wetland, reproduction, including but not limited complex, Raynor, Redding, and San and that maintain suitable periods of to vernal pools on high terrace Joaquin soil series elsewhere in the pool inundation, water quality, and soil landforms on acidic soils such as Red range. The impermeable layer at moisture for vernal pool plant Bluff, Redding, and Corning soil series. historical or extant occurrences germination, growth and reproduction, These habitats typically become included iron-silica cemented hardpan, and dispersal, but not necessarily every inundated during winter rains, but are tuffaceous alluvium, and basaltic rock year. dry during the summer and do not from ancient volcanic flows (Stone et al. All of the above described primary necessarily fill with water every year; 1988, Stebbins et al. 1995, EIP constituent elements do not have to and Associates 1999, CNDDB 2001). occur simultaneously within a unit for (2) The associated watershed(s) and The primary constituent elements of the unit to constitute critical habitat for hydrologic features, including the pool critical habitat for San Joaquin Valley hairy Orcutt grass. We determined the basin, swales, and surrounding uplands Orcutt grass are those habitat primary constituent elements of critical (which may vary in extent depending on components that are essential for the habitat for hairy Orcutt grass based on pool size and depth, soil type and primary biological needs of germination, studies on their habitat and population depth, hardpan or claypan type and growth, reproduction, and dispersal. biology including but not limited to— extent, topography, and climate) that These primary constituent elements are Crampton 1959, Medeiros, 1976, Griggs contribute to the filling and drying of found in areas that support vernal pools, 1980, Griggs and Jain 1983, Stone et al. the vernal pool or ephemeral wetland, swales, or other ephemeral ponds and 1988, Durgarian 1995, and Alexander and that maintain suitable periods of depressions and their associated and Schlising 1997. pool inundation, water quality, and soil uplands. The primary constituent elements for San Joaquin Valley Orcutt moisture for Sacramento Orcutt grass Sacramento Orcutt Grass Primary grass include— germination, growth and reproduction, Constituent Elements (1) Vernal pools, swales, and other and dispersal, but not necessarily every Sacramento Orcutt grass has been ephemeral wetlands and depressions of year. found in Northern Hardpan and appropriate sizes and depths and the Northern Volcanic Mudflow vernal All of the above described primary adjacent upland margins of these pools (Sawyer and Keeler-Wolf 1995). It constituent elements do not have to depressions that sustain San Joaquin occurs on high terrace sites (Stone et al. occur simultaneously within a unit for Orcutt grass germination, growth and 1988) at elevations of 46 to 82 m (150 the unit to constitute critical habitat for reproduction, including but not limited to 270 ft) (CNDDB 2001). Occupied Sacramento Orcutt grass. We to vernal pools on alluvial fans, high pools occur in blue oak woodland and determined the primary constituent and low stream terraces, and tabletop annual grassland (Crampton 1959, elements of critical habitat for lava flows. These habitats typically Griggs 1977, CNDDB 2002). Among Sacramento Orcutt grass based on become inundated during winter rains, occupied pools discovered prior to studies on their habitat and population but are dry during the summer and do 1988, the median area was 0.28 ha (0.69 biology including but not limited to— not necessarily fill with water every ac) and ranged from 0.1 ha (0.25 ac) to Crampton 1959, Griggs 1980, Griggs and year; and 0.82 ha (2.03 ac). Soils underlying pools Jain 1983, Holland 1987, and Stone et (2) The associated watershed(s) and where Sacramento Orcutt grass grows al. 1988. hydrologic features, including the pool

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basin, swales, and surrounding uplands Collayomi-Aiken-Whispering complex and that maintain suitable periods of (which may vary in extent depending on and the Konocti-Hambright complex pool inundation, water quality, and soil pool size and depth, soil type and soils. Modoc Plateau occurrences occur moisture for slender Orcutt grass depth, hardpan or claypan type and on the Gooval, Lasvar, Lasvar-Pitvar germination, growth and reproduction, extent, topography, and climate) that complex, and Nosoni soil series, and dispersal, but not necessarily every contribute to the filling and drying of whereas occurrences in northeastern year. the vernal pool or ephemeral wetland, Sacramento Valley are on the Anita, All of the above described primary and that maintain suitable periods of Guenon, Inks, Inskip, Laniger, Moda, constituent elements do not have to pool inundation, water quality, and soil Redding, Toomes, and Tuscan soil occur simultaneously within a unit for moisture for San Joaquin Valley Orcutt series. The Redding soil series also the unit to constitute critical habitat for grass germination, growth and supports slender Orcutt grass in slender Orcutt grass. We determined the reproduction, and dispersal, but not Sacramento County (Stone et al. 1988, primary constituent elements of critical necessarily every year. CNDDB 2001). habitat for slender Orcutt grass based on All of the above described primary Vegetation types in which the studies on their habitat and population constituent elements do not have to occupied pools occur are diverse, biology including but not limited to— occur simultaneously within a unit for ranging from grassland and oak Griggs 1980, Griggs 1981, Reeder 1982, the unit to constitute critical habitat for woodland to mixed conifer forest, silver Griggs and Jain 1983, Stone et al. 1988, San Joaquin Valley Orcutt grass. We sagebrush (Artemisia cana) flats, and Corbin and Schoolcraft 1989, and determined the primary constituent sedge meadows (Crampton 1959, Alexander and Schlising 1997. elements of critical habitat for San CNDDB 2001). Associated species vary Joaquin Valley Orcutt grass pools based throughout the range of slender Orcutt Solano Grass Primary Constituent on studies on their habitat and grass. Although slender Orcutt grass Elements population biology including but not grows in the same vernal pool Solano grass has been found only in limited to—Crampton 1959, Griggs complexes as hairy Orcutt grass in the Northern Claypan type of vernal 1980, Griggs and Jain 1983, Stone et al. Tehama County (including the Vina pool (Sawyer and Keeler-Wolf 1995) 1988, Stebbins et al. 1995, Keeley Plains Preserve) and Sacramento Orcutt within annual grassland (CNDDB 2001). 1998a, and EIP Associates 1999. grass in Sacramento County, it has not Pools where Solano grass occurs tend to been found to share any pools with Slender Orcutt Grass Primary be milky from suspended sediments either species (Stone et al. 1988, Constituent Elements (Holland 1987). The occupied pools in Cochrane in litt. 1995a, Alexander and Slender Orcutt grass is found Solano County are more properly Schlising 1997, CNDDB 2001). described as alkaline playas or primarily on substrates of volcanic The primary constituent elements of intermittent lakes due to their large origin (Crampton 1959, Corbin and critical habitat for slender Orcutt grass surface area (Crampton 1959), whereas Schoolcraft 1989). Vernal pools in are those habitat components that are those at the Yolo County site are which slender Orcutt grass grows are essential for the primary biological ‘‘relatively small’’ (Witham in litt. classified as Northern Volcanic Ashflow needs of germination, growth, and Northern Volcanic Mudflow vernal reproduction, and dispersal. These 2000a). Soils underlying known Solano pools (Sawyer and Keeler-Wolf 1995). primary constituent elements are found grass sites are saline-alkaline clay or Impervious layers range from iron-silica in areas that support vernal pools, silty clay in the Pescadero series hardpan to bedrock (Stone et al. 1988, swales, or other ephemeral ponds and (Crampton 1959, CNDDB 2001). Known Corbin and Schoolcraft 1989, CNDDB depressions and their associated occurrences are at elevations of 2001). Among the populations studied uplands. The primary constituent approximately 5 to 11 m (15 to 35 ft) by Stone and others (1988), the median elements for slender Orcutt grass (CNDDB 2001). area of pools occupied by slender Orcutt include— The primary constituent elements of grass was 0.65 ha (1.6 ac) and ranged (1) Vernal pools, swales, and other critical habitat for Solano grass are those from 0.08 to 45 ha (0.2 to 111 ac). On ephemeral wetlands and depressions of habitat components that are essential for the Modoc Plateau, occupied pools appropriate sizes and depths and the the primary biological needs of known as of 1989 ranged in size from adjacent upland margins of these germination, growth, reproduction, and 2 to 40 ha (5 to 100 ac) and were depressions that sustain slender Orcutt dispersal. These primary constituent typically at least 30 cm (11.8 in) deep; grass germination, growth and elements are found in areas that support this species was restricted to the deepest reproduction, including but not limited vernal pools, swales, or other ephemeral areas of these pools (Corbin and to Northern Volcanic Ashflow and ponds and depressions and their Schoolcraft 1989). Slender Orcutt grass Northern Volcanic Mudflow vernal associated uplands. The primary occurs through a wide range of pools (Sawyer and Keeler-Wolf 1995) constituent elements for Solano grass elevations corresponding to its broad with iron-silica and bedrock hardpan include: geographical range. The lowest reported impervious layers, and that typically (1) Vernal pools, swales, and other elevation was 27 m (90 ft) in become inundated during winter rains, ephemeral wetlands and depressions of Sacramento County (Stone et al. 1988) but are dry during the summer and do appropriate sizes and depths and the and the highest was 1,756 m (5,761 ft) not necessarily fill with water every adjacent upland margins of these in Plumas County (Corbin in litt. 1999). year; and depressions that sustain Solano grass Soil types supporting vernal pools (2) The associated watershed(s) and germination, growth and reproduction, where slender Orcutt grass is known to hydrologic features, including the pool including but not limited to Northern occur are diverse, ranging from slightly basin, swales, and surrounding uplands Claypan vernal pools (Sawyer and to strongly acidic (Stone et al. 1988) and (which may vary in extent depending on Keeler-Wolf 1995) on saline-alkaline from clay to sandy, silty, or cobbly loam pool size and depth, soil type and clay or silty clay in the Pescadero soil (Corbin and Schoolcraft 1989, CNDDB depth, hardpan or claypan type and series that typically become inundated 2001). The soil series has not been extent, topography, and climate) that during winter rains, but are dry during reported for all slender Orcutt grass sites contribute to the filling and drying of the summer and do not necessarily fill but the species has been reported on the vernal pool or ephemeral wetland, with water every year; and

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(2) The associated watershed(s) and endangered species or threatened ranges from 95 percent to nearly total hydrologic features, including the pool species to the point at which the (Bauder 1986, 1987, Bauder and basin, swales, and surrounding uplands measures provided pursuant to this Act McMillan 1998). In Oregon, 60 percent (which may vary in extent depending on are no longer necessary. Such methods of vernal pool habitats have been pool size and depth, soil type and and procedures include, but are not destroyed, and only 18 percent of the depth, hardpan or claypan type and limited to, all activities associated with remaining habitats are considered intact extent, topography, and climate) that scientific resources management such as (Oregon Natural Heritage Program 1997, contribute to the filling and drying of research, census, law enforcement, Borgias and Patterson 1999). As a result the vernal pool or ephemeral wetland, habitat acquisition and maintenance, of widespread habitat loss, most of the and that maintain suitable periods of propagation, live trapping, and species addressed in this rule are now pool inundation, water quality, and soil transplantation * * * ’’ Section 4(f)(1) limited to a fraction of their former moisture for Solano grass germination, of the Act provides for the development ranges. growth and reproduction, and dispersal, and implementation of recovery plans Beginning around the mid-1800s, but not necessarily every year. ‘‘for the conservation and survival of vernal pool habitats were destroyed as All of the above described primary endangered species and threatened a result of conversion to agriculture and constituent elements do not have to species,’’ and directs that such plans water diversion and impoundment occur simultaneously within a unit for incorporate ‘‘a description of such site- projects (Frayer et al. 1989, Holland the unit to constitute critical habitat for specific management actions as may be 1998, Kreissman 1991). In more recent Solano grass. We determined the necessary to achieve the plan’s goal for years, vernal pool habitats have been primary constituent elements of critical the conservation and survival of the lost primarily as a result of widespread habitat for Solano grass based on studies species;’’ and ‘‘objective, measurable urbanization (Bauder 1986, Bauder and on their habitat and population biology criteria which, when met, would result McMillan 1998). Much of the loss of including but not limited to—Griggs in a determination * * * that the habitat was the result of residential, 1980, Holland 1987, and Stone et al. species be removed from the list.’’ commercial, and industrial 1988. development projects. The construction General Criteria of infrastructures associated with Criteria Used To Identify Critical The Service currently is preparing a urbanization has also contributed Habitat draft recovery plan that will describe greatly to loss of vernal pool habitats, In accordance with section 3(5)(A)(I) measures and actions necessary for the including the construction of highways, of the Act and regulations at 50 CFR conservation and survival of the vernal wastewater treatment plants, sewer 424.12 in determining which areas to pool species addressed in this proposed lines, water supply projects, and other propose as critical habitat, we are rule. In determining the size, number, utility projects associated with required to base critical habitat and location of areas to propose as urbanization in California. determinations on the best scientific critical habitat we have considered the In some areas, conversion of vernal and commercial data available and to features necessary for conservation of pool habitats to intensive agricultural consider those physical and biological each species as recommended by the uses continues to contribute to the features that are essential to the vernal pool recovery team, other vernal decline of vernal pool habitats and the conservation of the species and that may pool experts, peer reviewed literature, species that inhabit them. From 1992 to require special management scientific reports, and other information 1998, 50,825 ha (125,591 ac) of grazing considerations or protection. Such in our files. We do not, however, land were converted to other requirements include but are not limited anticipate that these areas include all of agricultural uses in the Central Valley of to: space for individual and population the habitat areas that may eventually be California (California Department of growth, and for normal behavior; food, determined to be necessary for the Conservation 2001). It is likely that water, air, light, minerals, or other conservation of the species addressed much of this land supported vernal nutritional or physiological herein. For these reasons, critical habitat pools. Holland estimated that more than requirements; cover or shelter; sites for designations do not signal that habitat 12,950 ha (32,000 ac) of vernal pool breeding, reproduction, rearing of outside the designation is unimportant habitats had been lost in the San offspring; and habitats that are protected or may not be required for recovery. Joaquin valley vernal pool region from from disturbance or are representative of The conservation of species addressed the late 1980s until 1997, mostly as a the historic geographical and ecological in this rule depends on removing and result of agricultural conversion distributions of a species. Our alleviating the factors that threaten (Holland 1998). Through consultation implementing regulations at 50 CFR them, including factors that led to their under section 7 of the Act, we reviewed 424.12(e) indicate that the Secretary population decline and subsequent projects converting more than 6,070 ha shall designate as critical habitat areas Federal listing. Most species addressed (15,000 ac) of vernal pool habitats to outside the geographical area presently in this proposed rule are threatened by intensive agricultural uses. occupied by a species only when a common factors because they occupy Vernal pool species are also designation limited to its present range the same vernal pool ecosystems. threatened by other activities that would be inadequate to ensure the Holland (1998) estimated that almost indirectly destroy vernal pool conservation of the species. three-quarters of vernal pool habitats in ecosystems and render them unsuitable The primary objective in designating the Central Valley of California had for vernal pool species, including critical habitat is to identify areas that been lost by 1997. Loss of habitat has activities that alter hydrology, introduce are considered essential for the been even more complete in areas contaminants, cause erosion or conservation of the species, and to outside of the Central Valley. In the sedimentation, and introduce non- highlight specific areas where special central coast area, at least 90 percent of native species into vernal pool management considerations or historic vernal pools have been ecosystems. Maintaining habitat protections are necessary. The Act destroyed, and most remaining pools integrity was identified by the vernal defines the term ‘‘conservation’’ to mean have been degraded (Ferren and pool recovery team as an important ‘‘the use of all methods and procedures Pritchett 1988). In southern California consideration in planning recovery which are necessary to bring any estimated loss of vernal pool habitat strategies for the species addressed in

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this proposed rule (Vernal Pool populations that were once part of larger throughout California and in Oregon. Recovery Team in litt. 1996). The interconnected habitats, and the effects The soil types and geologic formations recovery of the species addressed in this of small population sizes and loss of which support vernal pools have also proposed rule will depend on the genetic diversity that result from habitat been mapped, and the associated development of recovery strategies that fragmentation. Fragmentation threatens landforms have been identified. We eliminate or minimize these threats so the elimination of some populations utilized these boundaries to identify that populations can stabilize, and with unforeseen natural and areas that support vernal pools, swales, future declines will be minimized. anthropogenic catastrophic events. and the associated uplands that Alteration of vernal pool hydrology Vernal pool species in these small comprise the hydrological unit of the can dramatically degrade vernal pool habitat patches are also vulnerable to vernal pool complex necessary for habitats. Vernal pool hydrology can be random fluctuations in habitat vernal pool crustacean growth, altered by a variety of activities, availability due to annual weather reproduction, feeding, and dispersal and including the construction of roads, patterns and other environmental vernal pool plant germination, growth, trails, ditches, or canals that can block factors. They are also more vulnerable to and reproduction. We relied on these the flow of water into, or drain water extirpation from random fluctuations in mapped boundaries to identify vernal away from, vernal pools and vernal pool demographic factors, such as birth rates pool complexes as intact, hydrologically complexes (CNDDB 2001). Runoff from and death rates (Lesica and Allendorf functioning units. We did not dissect or irrigated agricultural lands, storm water 1995). fragment existing complexes within this drains, or developed areas covered with Fragmentation of vernal pool designation. However, we do not believe concrete, asphalt, or irrigated lawns can complexes could contribute the entire watershed of vernal pool dramatically alter the hydrology of significantly to the loss of genetic habitats, as depicted by CALWATER or adjacent vernal pools (Bauder 1987, diversity among vernal pool species and other watershed mapping efforts, is Clark et al. 1998). As described in the reduce the likelihood of recolonization essential to the conservation of the primary constituent element section of events following population extinction species, and we are not proposing to this rule, all of the species addressed by limiting opportunities for dispersal designate entire watersheds as critical herein depend on specific timing and (King 1996, Fugate 1998). The habitat. duration of inundation to complete their fragmentation of vernal pool habitats Maintaining the range of habitat types life cycles. Altered vernal pool may decrease the ability of avian species in which a species is known to occur hydrology can harm vernal pool species to move between remaining patches of by preventing germination or hatching, vernal pool habitats (Silveira 1998), has been identified as an important preventing growth and maturation, and which would contribute to the isolation element in species recovery (Vernal by preventing reproduction and of vernal pool crustacean populations Pool Recovery Team in litt. 1996). disrupting gene flow and dispersal. by reducing cyst dispersal between Protecting environmental variability Altered hydrology can also allow remaining vernal pool habitat patches will reduce the chance of losing invasion of habitats and extirpation of (Proctor 1964, Krapu 1974, Swanson populations that are important for their vernal pool species by dominant upland 1974, Driver 1981, Ahl 1991). genetic uniqueness and adaptation to or aquatic species. Fragmentation of vernal pool areas local environmental conditions (Fugate Vernal pool species have also could reduce the availability of habitat 1992, King 1996, Linhart and Grant declined as a result of water for species, and decrease or 1996, Fugate 1998). Environmental contamination. Vernal pool crustaceans, eliminate seed production of many factors such as hydrology, soil in particular are highly sensitive to the vernal pool plants (Thorp and Leong composition and chemistry, pool size, water chemistry of their vernal pool 1998). and water chemistry, play a major role habitats, and contamination of vernal As described in the Primary in determining species presence and pools may injure or kill them (Belk Constituent Element section of this composition in vernal pool plants 1977, Eng et al. 1990, Gonzalez et al. proposed rule, the conservation of the (Holland and Griggs 1976, Holland and 1996). Toxic chemicals, such as wetted area of the vernal pool alone is Dains 1990, Jokerst 1990, Stallings and petroleum products, pesticides, not sufficient to provide the hydrologic Warren 1996). The presence and species herbicides, adjuvants, fertilizers, and conditions necessary for the composition of vernal pool crustaceans soap may wash into vernal pools during reproduction, feeding, sheltering, and is also largely determined by physical development of adjacent areas. Vernal dispersal of the vernal pool species factors such as pool size, depth, area, pools adjacent to existing developments addressed in this proposed rule. To and water chemistry (Eng et al. 1990, may also be contaminated from roadway maintain the integrity of the vernal pool Gonzales et al. 1996, Hathaway and contaminants in surface runoff (e.g., habitat and prevent extirpation of vernal Simovich 1996, Simovich and grease, oil, and heavy metals). pool species resulting from altered Hathaway 1997, Platenkamp 1998, Contamination may result from hydrology, contamination, Simovich 1998, Helm 1998). Variation discharge of fertilizers and pesticides sedimentation, and other factors which in these factors contributes to the wide into surface waters from golf courses, originate in the uplands surrounding the range of life history strategies observed irrigated agricultural lands, or vernal pools it is equally necessary to in vernal pool crustaceans and plants, landscaped residential areas (Petrovic conserve the surrounding micro- and to the high levels of species 1990). In addition to altered hydrology watershed and associated uplands that diversity observed in vernal pool and contamination, vernal pool species directly surround and feed the wetted ecosystems in general. Various efforts to have declined as a result of a variety of area of the vernal pool or pool complex. classify vernal pools, including Sawyer other incompatible land uses including The boundaries of vernal pool and Keeler-Wolf 1995, Keeler-Wolf et al. off road vehicle use, dumping, complexes, including vernal pools, 1998, Smith and Verrill 1998, have vandalism, erosion and sedimentation swales, and the associated uplands, identified the locations and (Service 1994c, CNDDB 2001). where vernal pool species are known to distributions of these different pool Additional threats to vernal pool occur in California have been mapped types. We consulted these sources of species include the negative effects of by Holland (1998, 2002) and by a information to ensure we have fragmentation and isolation on number of local and state organizations accurately identified the range of

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habitats in which each of the 15 species be taken to reduce the negative effects of vernal pool hydrology is important to addressed in this proposed rule are of such invasions. For example, grazing ensure that restoration actions are known to occur. can be effectively used to control a successful. variety of upland exotic plants. (3) Actions to reduce human Special Management Considerations However, the timing and intensity of degradation of vernal pools. Special In proposing critical habitat, we also grazing is critical to its success as a management actions such as fencing, have considered how this designation management tool, and these factors trail building, and posting signs can highlights habitat that needs special should be closely monitored. help to reduce human activities that management considerations or Alternatively, inappropriate grazing can threaten vernal pool species. These protection. For example, we have many also pose a threat to many of the vernal actions may reduce the damage regional HCPs under development, and pool plant species (CNDDB 2001). resulting from off-road vehicle use, this designation will be useful in Prescribed burning is another dumping, and vandalism that threatens helping applicants determine what management tool that may be effective many of the species addressed in this vernal pool habitat areas should be in controlling non-native plant species proposed rule. highest priority for special management (Pollack and Kan 1998). Fire must also (4) Actions to restore severely or protection, and where there may be be appropriately timed and fire degraded habitats. Active restoration of more flexibility in conservation options. frequency is important. The potential highly degraded vernal habitats may be This designation will guide them and us for alteration of nutrient cycling must be necessary in some areas. Such in ensuring that all local habitat also considered. Other management restoration may involve earth moving conservation planning efforts are techniques for control of invasive activities designed to restore historic consistent with conservation objectives species include mowing, hand removal, pool and swale topography and to for these species. and selective herbicide applications. reestablish natural vernal pool Once a vernal pool habitat has been Any technique employed must be hydrology (e.g., Ferren and Hubbard protected from direct filling, it is still carefully controlled and monitored to 1998, Black and Zedler 1998). These necessary to ensure that the habitat is ensure that it does not negatively affect types of actions are extremely complex, not rendered unsuitable for vernal pool the vernal pool species. and require diligent planning and species because of factors such as (2) Actions to restore vernal pool monitoring to ensure their success. altered hydrology, contamination, non- hydrology. Alteration of natural Active restoration is only recommended native species invasions, or other hydrology threatens many of the species for seriously degraded habitats that incompatible land uses. Even the best addressed in this proposed rule (CNDDB otherwise would not maintain natural designed vernal pool preserve may still 2001). In many cases other threats, such vernal pool ecosystem processes. be susceptible to alterations that render as the invasion of non-native species or it unsuitable for vernal pool species. contamination, are facilitated by Summary of Proposed Designation Many of the factors that cause the alterations of natural vernal pool Table 1 shows approximate areas of decline and extirpation of vernal pool hydrology. Special management actions, proposed critical habitat, by unit and species can be controlled through such as the removal of dams or other species. Because of overlap between special management actions. Examples structures which artificially increase the units established for different species, of special management actions that may length of vernal pool inundation, the the total of all critical habitat proposed be necessary to prevent further declines removal of ditches that artificially drain is much less than the sum of critical and loss of populations of species vernal pools, or the construction of habitat areas proposed for each species. addressed in this rule include— berms or reconstruction of culverts to Lands proposed are under private, State, (1) Actions to prevent or reduce prevent water from flowing artificially and Federal ownership and divided into competition of vernal pool plants with into vernal pools from adjacent areas, 128 Critical Habitat Units. The table invasive species. Many of the species can be taken to restore natural vernal provides separate columns for privately addressed in this rule are threatened by pool hydrology. Modification of grazing owned land subject to conservation invasion of non-native species (CNDDB regimes may also restore natural vernal easements or agreements and other 2001). Special management actions can pool hydrology (Barry 1998). Monitoring privately owned lands.

TABLE 1.—APPROXIMATE AREAS OF PROPOSED CRITICAL HABITAT FOR THE VERNAL POOL CRUSTACEANS AND PLANTS IN CALIFORNIA AND OREGON

Federal State and local Private (conservation) Private (other) Total Critical habitat units Hectares Acres Hectares Acres Hectares Acres Hectares Acres Hectares Acres

Conservancy Fairy Shrimp

1 ...... 0 0 0 0 6,747 16,672 13,799 34,097 20,546 50,769 2 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 3 ...... 241 596 329 814 1,072 2,648 8,285 20,471 9,927 24,529 4 ...... 0 0 0 0 0 0 603 1,490 603 1,490 5 ...... 299 739 0 0 0 0 3 7 302 746 6 ...... 427 1,056 11 26 4,566 11,283 58,746 145,160 63,750 157,525 7 ...... 12,765 31,542 3,096 7,649 1,119 2,765 29,163 72,060 46,142 114,016 8 ...... 18,042 44,581 0 0 0 0 789 1,950 18,831 46,531

Species Total .. 36,961 91,330 3,435 8,489 13,504 33,368 111,919 276,548 165,820 409,735

Longhorn Fairy Shrimp

1 A–B...... 0 0 0 0 0 0 321 794 321 794

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TABLE 1.—APPROXIMATE AREAS OF PROPOSED CRITICAL HABITAT FOR THE VERNAL POOL CRUSTACEANS AND PLANTS IN CALIFORNIA AND OREGON—Continued

Federal State and local Private (conservation) Private (other) Total Critical habitat units Hectares Acres Hectares Acres Hectares Acres Hectares Acres Hectares Acres

2 ...... 9,413 23,258 3,096 7,651 1,119 2,765 16,189 40,003 29,817 73,677 3 ...... 6,293 15,549 94 233 0 0 4,079 10,080 10,466 25,862

Species Total .. 15,705 38,807 3,191 7,884 1,119 2,765 20,590 50,877 40,605 100,333

Vernal Pool Fairy Shrimp

1 A–G ...... 0 0 0 0 0 0 862 2,130 862 2,130 2 A–E ...... 0 0 0 0 0 0 911 2,251 911 2,251 3 A–C ...... 0 0 0 0 0 0 931 2,301 931 2,301 4 A–B ...... 175 432 0 0 0 0 186 460 361 892 5 ...... 17 42 0 0 53 130 1,779 4,397 1,849 4,569 6 ...... 0 0 175 433 0 0 18,386 45,432 18,562 45,865 7 ...... 0 0 0 0 6,747 16,672 17,136 42,343 23,883 59,015 8 ...... 0 0 0 0 0 0 5,760 14,233 5,760 14,233 9 ...... 76 187 0 0 7 17 1,374 3,394 1,456 3,598 10 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 11 ...... 2,035 5,028 0 0 0 0 818 2,021 2,853 7,049 12 ...... 0 0 0 0 64 157 19,324 47,748 19,387 47,905 13 ...... 6 16 0 0 0 0 14,859 36,717 14,866 36,733 14 ...... 0 0 630 1,557 4,014 9,918 21,956 54,253 26,600 65,728 15 ...... 0 0 60 149 0 0 1,563 3,863 1,624 4,012 16 ...... 1,015 2,507 1,038 2,564 1,137 2,809 31,721 78,381 34,910 86,261 17 ...... 0 0 170 420 0 0 486 1,201 656 1,621 18 ...... 0 0 0 0 0 0 7,105 17,55 77,105 17,557 19 A–C ...... 0 0 64 157 288 711 3,004 7,424 3,356 8,292 20 ...... 299 739 0 0 0 0 3 7 302 746 21 ...... 7 17 25 61 0 0 25,285 62,479 25,317 62,557 22 ...... 3 8 11 26 3,464 8,559 40,628 100,391 44,106 108,984 23 ...... 13,943 34,452 3,096 7,649 1,119 2,765 37,753 93,287 55,911 138,153 24 A–B ...... 0 0 0 1 0 0 17,231 42,578 17,232 42,579 25 ...... 65 161 0 0 0 0 929 2,295 994 2,456 26 A–C ...... 0 0 348 861 0 0 2,845 7,030 3,193 7,891 27 A–B ...... 2,742 6,776 490 1,210 1,325 3,274 3,285 8,117 7,842 19,377 28 ...... 1,581 3,906 2 5 0 0 46,542 115,004 48,125 118,915 29 A–C ...... 20,586 50,868 0 0 0 0 20,468 50,576 41,054 101,444 30 ...... 6,293 15,549 94 233 0 0 4,079 10,080 10,466 25,862 31 ...... 2,236 5,526 0 0 0 0 6,163 15,228 8,399 20,754 32 ...... 18,042 44,580 0 0 0 0 790 1,951 18,831 46,531 33 A–C ...... 0 0 0 0 0 0 2,319 5,730 2,319 5,730 34 ...... 0 0 761 1,880 830 2,052 127 314 1,718 4,246 35 ...... 0 0 0 0 0 0 97 239 97 239

Species Total.. 74,307 183,610 6,963 17,206 19,047 47,064 357,239 882,725 457,556 1,130,605

Vernal Pool Tadpole Shrimp

1 ...... 17 42 0 0 53 130 1,779 4,397 1,849 4,569 2 ...... 6,226 15,383 437 1,081 6,320 15,617 7,463 18,441 20,446 50,522 3 ...... 0 0 0 0 6,747 16,672 17,136 42,343 23,883 359,015 4 ...... 127 313 0 0 84 208 15,764 38,953 15,975 39,474 5 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 6 ...... 0 0 0 0 0 0 526 1,299 526 1,299 7 ...... 2,035 5,028 0 0 0 0 818 2,021 2,853 7,049 8 ...... 6 16 0 0 0 0 14,859 36,717 14,866 36,733 9 ...... 0 0 630 1,557 4,039 9,981 24,393 60,275 29,063 71,813 10 ...... 130 321 0 0 0 0 62 153 192 474 11 ...... 760 1,879 1,038 2,565 1,136 2,808 31,675 78,269 34,610 85,521 12 ...... 0 0 0 0 0 0 603 1,490 603 1,490 13 ...... 0 0 0 0 0 0 9,408 23,246 9,408 23,246 14 ...... 10 24 0 0 0 0 448 1,108 458 1,132 15 ...... 3 8 11 26 4,566 11,283 66,496 164,309 71,076 175,626 16 ...... 13,943 34,452 3,096 7,649 1,119 2,765 37,753 93,287 55,911 138,153 17 ...... 85 209 174 430 259 639 223 551 740 1,829 18 ...... 0 0 348 861 0 0 2,845 7,030 3,193 7,891

Species Total.. 28,528 70,491 5,734 14,169 24,324 60,103 232,784 575,202 291,370 719,965

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TABLE 1.—APPROXIMATE AREAS OF PROPOSED CRITICAL HABITAT FOR THE VERNAL POOL CRUSTACEANS AND PLANTS IN CALIFORNIA AND OREGON—Continued

Federal State and local Private (conservation) Private (other) Total Critical habitat units Hectares Acres Hectares Acres Hectares Acres Hectares Acres Hectares Acres

Butte County Meadowfoam

1 ...... 0 0 0 0 0 0 6,105 15,086 6,105 15,086 2 ...... 0 0 0 0 0 0 3,508 8,667 3,508 8,667 3 ...... 9 22 0 0 0 0 1,687 4,169 1,696 4,191 4 ...... 0 0 0 0 0 0 5,011 12,382 5,011 12,382

Species Total.. 9 22 0 0 0 0 16,311 40,304 16,320 40,326

Colusa Grass

1 ...... 130 322 0 0 0 0 62 152 192 474 2 ...... 94 233 258 637 1,137 2,809 5,664 13,996 7,153 17,675 3 ...... 0 0 0 0 0 0 16,475 40,709 16,475 40,709 4 ...... 0 0 0 0 1 2 35,133 86,812 35,134 86,814 5 ...... 0 0 25 61 0 0 19,825 48,988 19,850 49,049 6 ...... 427 1,055 11 26 0 0 45,204 111,698 45,642 112,779 7 A–B ...... 1,422 3,514 0 0 0 0 6,741 16,656 8,163 20,170

Species Total.. 2,074 5,124 293 724 1,138 2,811 129,104 319,011 132,608 327,670

Contra Costa Goldfields

1 ...... 0 0 0 0 0 0 1,067 2,637 1,067 2,637 2 ...... 0 0 0 0 0 0 411 1,016 411 1,016 3 ...... 0 0 0 0 0 0 274 678 274 678 4 ...... 1,954 4,828 122 301 0 0 5,809 14,355 7,885 19,484 5 A–B ...... 0 0 0 0 0 0 410 1,014 410 1,014 6 ...... 0 0 0 0 0 0 242 599 242 599 7 ...... 0 0 291 718 0 0 1,088 2,688 1,378 3,406 8 ...... 448 1,108 0 0 0 0 10 24 458 1,132 9 ...... 3,370 8,326 2 4 0 0 0 1 3,372 8,331

Species Total.. 5,772 14,262 414 1,023 0 0 9,313 23,012 15,499 38,297

Greene’s Tuctoria

1 ...... 903 2,231 0 0 0 0 70 172 972 2,403 2 ...... 0 0 0 1 7,096 17,534 4,577 11,310 11,674 28,845 3 ...... 0 0 0 0 0 0 979 2,418 979 2,418 4 ...... 0 0 0 0 4 9 295 729 299 738 5 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 6 ...... 0 0 0 0 1 2 36,413 89,976 36,414 89,978 7 ...... 427 1,056 11 26 4,566 11,283 68,703 169,762 73,707 182,127 8 ...... 0 0 0 0 0 0 13,222 32,670 13,222 32,670

Species Total .. 6,517 16,103 11 27 11,667 28,828 124,789 308,350 142,984 353,308

Hairy Orcutt Grass

1 ...... 0 0 0 0 6,219 15,366 2,530 6,251 8,748 21,617 2 ...... 0 0 0 0 0 0 979 2,418 979 2,418 3 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 4 ...... 7 17 25 61 0 0 25,286 62,482 25,318 62,560 5 ...... 0 0 0 0 0 0 9,085 22,448 9,085 22,448 6 ...... 0 0 4 10 0 0 15,820 39,090 15,824 39,100

Species Total .. 5,194 12,833 29 71 6,219 15,366 54,231 134,002 65,671 162,272

Hoover’s Spurge

1 ...... 0 0 0 1 7,096 17,534 4,577 11,310 11,674 28,845 2 ...... 0 0 0 0 0 0 979 2,418 979 2,418 3 ...... 5,187 12,816 0 0 0 0 531 1,313 5,718 14,129 4 ...... 0 0 0 0 1 2 16,838 41,607 16,839 41,609 5 ...... 0 0 24 60 0 0 19,826 48,989 19,850 49,049 6 ...... 3,232 7,985 0 0 0 0 11,078 27,374 14,310 35,359 7 A–D ...... 13 33 355 877 0 0 12,007 29,668 12,375 30,578

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TABLE 1.—APPROXIMATE AREAS OF PROPOSED CRITICAL HABITAT FOR THE VERNAL POOL CRUSTACEANS AND PLANTS IN CALIFORNIA AND OREGON—Continued

Federal State and local Private (conservation) Private (other) Total Critical habitat units Hectares Acres Hectares Acres Hectares Acres Hectares Acres Hectares Acres

Species Total .. 8,432 20,834 380 938 7,097 17,536 65,836 162,679 81,744 201,987

Sacramento Orcutt Grass

1 ...... 0 0 3 7 0 0 26 65 29 72 2 ...... 0 0 0 0 0 0 8,853 21,875 8,853 21,875 3 ...... 0 0 247 610 3,135 7,747 12,368 30,561 15,750 38,918

Species Total .. 0 0 250 617 3,135 7,747 21,247 52,501 24,632 60,865

San Joaquin Valley Orcutt Grass

1 ...... 427 1,056 11 26 3,464 8,559 41,742 103,142 45,643 112,783 2 ...... 0 0 0 0 433 1,070 21,062 52,044 21,495 53,114 3 ...... 0 0 0 0 0 0 20,936 51,733 20,936 51,733 4 ...... 0 0 0 1 0 0 3,233 7,989 3,234 7,990 5 A–B ...... 150 370 0 0 263 650 1,310 3,238 1,723 4,258 6 A–B ...... 0 0 199 491 0 0 7,829 19,345 8,028 19,836

Species Total .. 577 1,426 210 518 4,160 10,279 96,113 237,491 101,059 249,714

Slender Orcutt Grass

1 A–I ...... 18,527 45,780 37 92 0 0 4,702 11,618 23,266 57,490 2 A–C ...... 33 81 0 0 53 130 5,014 12,390 5,100 12,601 3 ...... 6,226 15,384 437 1,080 6,320 15,617 7,463 18,441 20,446 50,522 4 ...... 0 0 0 1 7,096 17,534 4,577 11,310 11,674 28,845 5 A–B ...... 0 0 5 13 78 192 1,613 3,986 1,696 4,191 6 ...... 0 0 0 0 0 0 8,853 21,875 8,853 21,875

Species Total .. 24,786 61,245 480 1,186 13,547 33,473 32,222 79,620 71,035 175,524

Solano Grass

1 ...... 130 321 0 0 0 0 62 153 192 474 2 ...... 94 233 257 636 1,137 2,809 5,665 13,997 7,153 17,675

Species Total .. 224 554 257 636 1,137 2,809 5,727 14,150 7,345 18,149

Succulent Owl’s Clover

1 ...... 0 0 0 0 0 0 1,051 2,598 1,051 2,598 2 ...... 0 0 0 0 0 0 14,131 34,917 14,131 34,917 3 A–B ...... 427 1,056 11 26 4,566 11,283 58,348 144,177 63,353 156,542 4 ...... 5 13 56 139 0 0 33,009 81,565 33,071 81,717 5 ...... 0 0 0 1 0 0 11,888 29,374 11,888 29,375 6 A–B ...... 150 371 174 429 259 639 1,141 2,819 1,723 4,258

Species Total .. 583 1,440 241 595 4,825 11,922 119,569 295,450 125,217 309,407

Species Specific Criteria background section of this rule, the Jepson Prairie and Suisun Slough in After developing the general criteria primary constituent elements described southern Solano County; Sacramento described previously, we conducted a in the primary constituent element National Wildlife Refuge in Glenn and species by species review based on the section of this rule, and the threats to Colusa counties; near Caswell Memorial specific habitat requirements, primary the species described above, in addition State Park in Stanislaus County; near constituent elements, and individual to those described below. This Haystack Mountain in Merced County; threats to each species addressed in this information allowed us to determine at the San Luis National Wildlife Refuge proposed rule. The specific unit which areas are likely to contribute to Complex in western Merced County, description for each species is described the conservation of Conservancy fairy and at the Mutau Flat area in the Los below. shrimp and to delineate units so that Padres National Forest area of northern threats to these species might be Ventura County. Conservancy Fairy Shrimp Criteria minimized. Conservancy fairy shrimp continues In proposing critical habitat units for Conservancy fairy shrimp are known to be threatened by all of the factors Conservancy fairy shrimp, we evaluated only from eight disjunct areas: the Vina which lead to the original listing of this the life history and current distribution Plains area and vicinity in southern species, primarily habitat loss through of the species described in the Tehama and northern Butte County; agricultural conversion and

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urbanization. Helm (1998) found that as Northern Hardpan by Sawyer and to TNC, the importance of vernal pool most Conservancy fairy shrimp Keeler-Wolf (1995) and occur on the habitats in this area has been recognized occurrences were on Anita, Pescadero or Tuscan, Red Bluff, and Riverbank by the CDFG, the Service, the EPA, the Peters Clay soils. These fertile, basin rim geologic formations. Within this unit CNPS, the NRCS’s WRP, and by soils were among the first areas vernal pools occur in complexes with a researchers at the CSU at Chico, who converted to agriculture in the 19th range of pool sizes, from over several have all supported research and century, suggesting that a acres to less than a tenth of an acre, in conservation efforts for Conservancy disproportionate amount of areas of hummocky ground on old fairy shrimp and other vernal pool Conservancy fairy shrimp habitat may terraces above recent river flood plains species within this unit. Urban have been lost early in California’s below the foothills (Alexander and development north of Chico and the history (Helm 1998). Schlising 1997, Keeler-Wolf et al. 1998). conversion of grazed lands to more In addition to direct habitat loss, The boundaries of this unit were intensive agricultural uses threaten almost one third of the known delineated to include the interconnected vernal pool habitat within this unit. occurrences of Conservancy fairy pools, swales, and interconnected The Vina Plains Unit extends from shrimp are threatened by alterations of uplands mapped by Holland (1998) that south of Deer Creek to north of Rock hydrology, including the construction of contribute to the filling and drying of Creek and the Chico Airport near the drainage channels, diking, and the vernal pools where Conservancy City of Chico. State Highway 99 bisects inappropriate water diversion within fairy shrimp occur, and maintain this unit. The western boundary managed wetland areas in Merced and suitable periods of pool inundation, generally parallels the Southern Pacific Solano counties (CNDDB 2002). Other water quality, and soil moisture for Railway line. The eastern boundary of threats include possible introduction of Conservancy fairy shrimp hatching, this unit extends to the boundary of the predators (e.g., bullfrogs, crayfish, fish) growth and reproduction, and dispersal, East Red Bluff watershed. This unit either directly or through alteration of but not necessarily every year. overlaps Unit 7 for vernal pool fairy drainage patterns (CNDDB 2002). Off- This unit includes relatively shrimp and Unit 3 for vernal pool road vehicles also represent a threat to undisturbed, hydrologically intact tadpole shrimp and contains part of the continued survival of Conservancy vernal pool habitats, that will likely Unit 1 for hairy Orcutt grass, Unit 2 for fairy shrimp populations (Hathaway et continue to support natural vernal pool Greene’s tuctoria, Unit 1 for Hoover’s al. 1996). In some cases, special ecosystem processes and maintain spurge, and Unit 4 for slender Orcutt management actions may be necessary suitable habitat conditions for grass. Additional sensitive species to prevent these threats from extirpating Conservancy fairy shrimp. This area occurring in this unit include California occurrences of Conservancy fairy also provides seasonal habitat for linderiella and Bogg’s Lake hedge- shrimp. waterfowl and other migratory bird hyssop. species which aid in the dispersal of Unit 2, Colusa Unit, Sacramento Valley, Conservancy Fairy Shrimp Review Conservancy fairy shrimp among vernal Glenn and Colusa Counties (5,718 ha We conducted a regional review pools within the unit, and between (14,129 ac)) across the range of Conservancy fairy other habitats across the species range. shrimp to evaluate and select areas that The majority of the lands included This unit is proposed as critical are essential to the conservation of the within this unit are privately owned. habitat for Conservancy fairy shrimp species and that may require special This unit contains TNC’s Vina Plains because it contains occurrences of the management actions. Important factors preserve as well as other TNC lands species within large, alkaline vernal we considered were the known presence 2,264 ha (5,660 ac) and conservation pools formed on the Modesto geologic of the species and the presence of the easements 4,348 ha (10,870 ac). The formation on Willows and Riz soils that primary constituent elements essential NRCS also holds WRP conservation provide the primary constituent to the conservation of the species. A easements or agreements on 57 ha (142 elements essential to the conservation of specific description of each area is ac). The preserve contains over 300 the Conservancy fairy shrimp (Holland outlined below. species of plants, and diverse 1998, Silveira 2000, CNDDB 2002). communities of aquatic invertebrates. Conservancy fairy shrimp in this area Unit 1, Vina Plains Unit, Butte and Since the 1960’s, the Vina Plains area occupy pools that are often large, Tehema Counties (20,546 ha (50,769 has been the focus of a number of shallow and alkaline. They may display ac)) research projects, including long-term white salt deposits following pool This unit is proposed as critical adaptive management and monitoring drying. These pool types remain habitat for Conservancy fairy shrimp efforts evaluating of the effects of inundated for sufficient periods of time because it contains occurrences of the grazing and fire on vernal pool plants, to allow Conservancy fairy shrimp to species (CNDDB 2002) within vernal animals, and ecosystems (Griggs 2000). hatch, mature, and reproduce, but do pools found on Anita clay and Tuscan Much of the basic life history not contain water during the summer, loam soils (EPA 1994, Holland 1998, information known about vernal pool preventing the invasion of predator Tehama County 1999, USDA 2001). crustaceans was collected at Vina Plains species such as bullfrogs and fish. This These soils support pool types that (e.g. Lanway 1974, Ahl 1991, Syrdahl area is important to maintain the remain inundated for sufficient periods 1993, Gallagher 1996). The results of diversity of habitats in which of time to allow Conservancy fairy this research have provided crucial Conservancy fairy shrimp occur. shrimp to hatch, mature, and reproduce, information to guide management and This unit is primarily located on the but do not contain water during the monitoring of vernal pool ecosystems Sacramento National Wildlife Refuge summer preventing the invasion of and to identify factors which influence (5,126 ha (12,816 ac)). Any additional predator species such as bullfrogs and population dynamics of a number of lands within this unit are privately fish. This unit represents the northern endangered species, including owned. The refuge supports over 355 extent of Conservancy fairy shrimp Conservancy fairy shrimp. The Vina native plant taxa, including a number of range. Plains is open to the public and rare alkaline species (Oswald and Conservancy fairy shrimp in this area provides excellent outreach and Silveira 1995). Vernal pool habitats on occupy vernal pools that are classified educational opportunities. In addition the refuge are specifically managed for

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the conservation of listed species, and to the pools, swales, and associated plant construction, and utility promote habitat for migratory birds and uplands maintain the necessary timing maintenance. Urbanization in the waterfowl. As a result this unit also and frequency of inundation for vicinity of Fairfield and Suisun, and provides essential habitat for avian Conservancy fairy shrimp hatching, landfill expansion projects in the species that aid in the dispersal of growth, and reproduction, but are dry vicinity of the Protero Hills, threaten Conservancy fairy shrimp and other during the summer. The relatively vernal pool habitats in the area. vernal pool crustacean cysts. The undisturbed, hydrologically intact Sacramento National Wildlife Refuge condition of the Jepson Prairie increases This unit occurs in the southern contains the only remnants of the the likelihood that it will continue to portion of Solano County, east and widespread Colusa Plains vegetation support natural vernal pool ecosystem south of the City of Fairfield, south and that once covered the entire Colusa processes and maintain suitable habitat southwest of the City of Dixon, and Basin (Silveira 2000). Vernal pool conditions for Conservancy fairy north of Nurse Slough and the habitats within the area have become shrimp. This unit also provides habitat confluence of the Sacramento and San greatly fragmented and isolated from for avian species that aid in the Joaquin rivers. This unit contains Unit other habitats in the region. dispersal of Conservancy fairy shrimp 3 for Colusa grass, Unit 2 for Solano The boundaries of this unit were and other vernal pool crustacean cysts. grass, and overlaps with Unit 4 for delineated to include the interconnected In addition to Conservancy fairy Contra Costa goldfields. This unit is pools, swales, and interconnected shrimp, the greater Jepson Prairie encompassed by Unit 11 for vernal pool uplands mapped by Holland (1998) that grassland area supports a diverse tadpole shrimp and Unit 16 for vernal contribute to the filling and drying of community of native plants and pool fairy shrimp. the vernal pools where Conservancy animals, including the only known fairy shrimp occur, and maintain occurrence of Delta green ground beetle, Unit 4, Montezuma Unit, Solano County suitable periods of pool inundation, and occurrences of Solano grass, Colusa (603 ha (1,490 ac)) water quality, and soil moisture for grass, California tiger salamander, Conservancy fairy shrimp hatching, vernal pool tadpole shrimp, vernal pool This unit is proposed as critical growth and reproduction, and dispersal, fairy shrimp, alkali milk-vetch, Bogg’s habitat for Conservancy fairy shrimp but not necessarily every year. Lake hedge-hyssop, legenere, California because it contains vernal pools that This unit occupies vernal pool habitat linderiella, and . support the necessary timing, frequency, east of Interstate 5 to the Colusa Trough The southwestern portion of this unit and duration of inundation essential for from Riz Road on the north and Delevan contains vernal pool habitats near the Conservancy fairy shrimp feeding, Road on the south. This unit coincides Potrero Hills south of Travis Air Force sheltering, reproducing, and dispersing with vernal pool fairy shrimp Unit 10, Base. These vernal pool habitats occur (Lipton in litt. 2002, Levine Fricke vernal pool tadpole shrimp Unit 5, Unit in close proximity to tidal marshes and Restoration Corp 2000). This is the most 3 for hairy Orcutt grass, and Unit 3 for contain habitat for Contra Costa recently discovered occurrence of Hoover’s spurge. Other rare vernal pool goldfields. Conservancy fairy shrimp, and one of species found in this unit include This unit includes the Jepson Prairie the only areas where this species occurs pappose spikeweed, Fremont’s Preserve, jointly managed by the Solano in the saline-alkaline transition zone goldfields, alkali goldfields, Scribe’s County Farmlands and Open Space between vernal pools and tidal marshes. popcorn flower, Hoover’s downingia, Foundation and the UC Reserve System. folded downingia, Heckard’s Jepson Prairie has long been recognized Most of the habitats within this unit peppergrass, heartscale, brittlescale, San as an outstanding example of vernal are on private land, although portions of Joaquin spearscale, Ferris’ milk-vetch, pool ecosystems. In 1987 NPS named the Hill Slough Wildlife Area managed spike-primrose, sessile mousetail, and Jepson Prairie a National Natural by the CDFG are also included within the federally listed as endangered Landmark, a designation given to sites this unit. The primary threats to vernal palmate-bracted bird’s beak. that provide high quality habitat for pool habitats within this unit are threatened or endangered species. alterations to hydrology from filling, Unit 3, Jepson Prairie Unit, Solano Jepson Prairie is the target of ongoing County (9,927 ha (24,529 ac)) diking, and dredging activities which conservation planning efforts and active may occur in the tidal marsh. This unit This unit is proposed as critical management. As part of the UC Reserve is also proposed so that special habitat for Conservancy fairy shrimp System, this area provides critical management actions may be taken to because it includes numerous research opportunities for scientists to prevent the degradation of Conservancy occurrences of the species within one of study Conservancy fairy shrimp, and to fairy shrimp occurrences through the most pristine, intact vernal pool determine their response to different alteration of the hydrology of their ecosystems remaining in California management regimes. Conducting this vernal pool habitats. (Holland 1998, Solano County 1999, research is essential to ensure the Solano County Farmland and Open conservation of Conservancy fairy This unit is located near the Suisun Space 2001, CNDDB 2002). The unit shrimp and other vernal pool species. Marsh in southern Solano County, east boundary was drawn to include the This unit also contains land owned by of Montezuma Slough and west of vernal pools where Conservancy fairy the CDFG (319 ha (797 ac)), and State Collinsville Road; the northernmost shrimp occur, including the 32 ha (80 Land Commission (7 ha (17 ac)), as well portion of this unit is bisected by Birds ac) Olcott Lake and other large playa as conservation easements held by TNC Landings Road. Portions of this unit pools associated with Solano Loam and (623 ha (1,090)) and by NRCS under the coincide with Unit 12 for vernal pool Pescadero soil series. Conservancy fairy WRP program (436 ha (1,090 ac). The tadpole shrimp. In addition to shrimp in this unit occupy vernal pool unit also includes portions of Travis Air Conservancy fairy shrimp, this unit complexes extending from Jepson Force Base (DOD lands totaling 238 ha contains occurrences of other rare Prairie west towards the City of (596 ac)). Within the greater Jepson vernal pool species including vernal Fairfield. Within these complexes larger Prairie grassland area, existing vernal pool fairy shrimp, alkali milk-vetch and pools often occur with smaller pools pools are threatened by agricultural dwarf downingia. and hogwallow depressions. Together conversion, landfill expansion, power

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Unit 5, Northern San Joaquin Valley vernal pool species including the a conservation easement with TNC that Unit, Stanislaus County (302 ha (746 federally listed endangered riparian conserves over 2,023 ha (5,000 ac) of ac)) wood rat and riparian brush rabbit. vernal pool and upland habitat. Land ownership within the unit includes This unit is proposed as critical Unit 6, Merced Unit, Merced and approximately 419 ha (1,048 ac) of DOD, habitat for Conservancy fairy shrimp Mariposa Counties (63,750 ha (157,525 (3 ha (8 ac) of BLM, and 10 ha (26 ac) because it contains the species within ac) alkali sink vernal pools formed on of California State Parks. TNC has a total This unit is proposed as critical of 4,513 ha (11,283 ac) of conservation Fresno series soils (CNDDB 2002). The habitat for Conservancy fairy shrimp unit boundary was designated to easements within this unit. because it contains occurrences of the A majority of the vernal pool habitat include the vernal pool complex species within large, playa vernal pools in the Merced Unit is in eastern Merced mapped by Holland (1998) that found on Raynor Cobbly clay soils on County. The eastern edge of the unit maintains the necessary timing and the Mehrten Formation (CNDDB 2001, overlaps into western Mariposa County frequency of inundation for EIP Associates 1999). These pool types and in the south it extends to Deadman Conservancy fairy shrimp hatching, provide the necessary length and timing Creek. The northern boundary parallels growth, and reproduction, but is dry in of inundation essential for the the Merced River. The unit is located the summer. The minimum mapping conservation of Conservancy fairy east of Highway 99 and the City of unit of Holland (1998) of 16 ha (40 ac) shrimp. The Merced Unit encompasses Merced, Planada, and Le Grand. The did not allow us to exclude all non- the largest block of pristine, high eastern boundary extends into the low vernal pool areas from within the unit density vernal pool grasslands elevation foothills of the Sierra Nevada. boundary. However, the entire unit is remaining in California (Vollmar 1999). The boundaries of this unit overlap with located within the San Joaquin River The relatively undisturbed, San Joaquin Valley Orcutt grass Units 2 National Wildlife Refuge and restoration hydrologically intact condition of the and 3, Colusa grass Units 7, Greene’s is currently the focus of conservation unit increases the likelihood that it will tuctoria Unit 6, succulent owl’s-clover planning efforts by the Service. continue to support natural vernal pool Units 3B, vernal pool fairy shrimp Unit Additional restoration designed to ecosystem processes and maintain 22, and vernal pool tadpole shrimp Unit enhance habitat for riparian species, as suitable habitat conditions for 15. Other sensitive vernal pool species well as migratory birds and waterfowl, Conservancy fairy shrimp. Genetic found within this unit include is also currently underway. This unit is analyses of vernal pool tadpole shrimp California tiger salamander, shining proposed so that special management revealed that occurrences in this unit navarretia, dwarf downingia, Bogg’s actions, including appropriate wetland were genetically different from other Lake hedge-hyssop, western spadefoot management, can be taken to maintain occurrences in California, and that this toad, and California linderiella. the natural hydrology of the vernal area was isolated from other vernal pool pools where Conservancy fairy shrimp habitats (King 1996). Given that Unit 7, Grassland Ecological Unit, are known to occur. This unit is over 70 Conservation fairy shrimp and vernal Madera, Merced and Stanislaus km (43 mi) from the nearest unit to the pool tadpole shrimp are dispersed in Counties (46,142 ha (114,016 ac)) south and over 40 km (25 mi) from the similar ways, it is reasonable to assume We propose this area as critical nearest unit to the north. Such isolated that Conservancy fairy shrimp habitat for Conservancy fairy shrimp populations may have genetic occurrences in this areas are also because it supports multiple characteristics essential to overall long- isolated from other occurrences occurrences of the species within large, term conservation of the species (i.e. throughout its range, and may also have playa vernal pools of the Edminstor and they may be genetically different than unique genetic characteristics. Kesterson soil series (Holland 1998, more central populations) (Lesica and Vernal pool habitats in eastern USDA 2001, CNDDB 2002). The unit Allendorf 1995, Fugate 1998). Merced County are seriously threatened boundary was drawn to include Lands within this unit form a mosaic by irrigated agriculture, upland housing Conservancy fairy shrimp and the of riparian habitat, wetlands, and development, and the proposed UC vernal pool complexes mapped by grasslands. The San Joaquin River Merced campus and associated Holland (1998) where the species is National Wildlife Refuge is the primary development. Effects associated with known to occur. These features wintering site of 98 percent of the the UC campus and associated maintain the necessary length and Aleutian Canada geese that winter in the community could result in loss and timing of inundation for Conservancy Valley (October—April), and it is a degradation of vernal pool habitats fairy shrimp hatching, maturation, and major wintering and migration area for within this unit. However, the recent reproduction, but are dry in the summer lesser and greater sandhill cranes, draft biological opinion for the UC and do not support aquatic species such cackling Canada geese, and white- Merced campus and community as fish or bullfrogs. Conservancy fairy fronted geese. These migratory birds act developed environmental parameters shrimp are found in large numbers as dispersal agents for Conservancy fairy which should reduce impacts to vernal throughout this unit, making this area a shrimp and other vernal pool crustacean pool habitats. Merced County and the potential source for propagules species. CDFG are currently gathering data on dispersing to Conservancy fairy shrimp This unit is situated west of the City presence, distribution, and microhabitat habitats to the south in Ventura County, of Modesto and east of the confluence preferences of vernal pool crustaceans to the east in eastern Merced County, of the San Joaquin and Stanislaus rivers. to aid in developing long-term and to the north in Stanislaus County. Caswell Memorial State Park lies just conservation planning strategies for This unit is also proposed as critical to north of this unit. This unit is bisected eastern Merced County. There is interest ensure that special management actions by the Hetch Hetchy Aqueduct and among ranch owners to establish are taken to prevent or reverse changes State Highway 132. This unit overlaps conservation easements that will in hydrology, contamination from vernal pool fairy shrimp Unit 20. It is support rangeland and vernal pool adjacent land use, and invasion by also contains California linderiella and conservation. The Conservancy fairy aquatic species that threaten California tiger salamander occurrences, shrimp occurrence at the Flying M Conservancy fairy shrimp occurrences in addition to a number of rare non- Ranch is already being managed through within this unit.

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This area contains the largest intact with fairy shrimp. The Ventura County and protect populations from indirect vernal pool habitat for Conservancy sites that are occupied by Conservancy effects, such as changes in hydrology, fairy shrimp in the San Joaquin Valley fairy shrimp are 124 km (200 m) from contamination, siltation, erosion, (Holland 1998). This unit also provides other species occurrences in the Great competition with non-native species, essential habitat for migratory waterfowl Central Valley, thereby suggesting that and human-related disturbance, such as that aid in the dispersal of Conservancy the Ventura County population(s) is off road vehicle use. fairy shrimp and other vernal pool geographically isolated from the Longhorn Fairy Shrimp Unit Review crustacean cysts. The Grassland population(s) that occur farther east and Ecological Unit includes Kesterson, San north. Such isolated and peripheral We conducted a review of the Luis, and Merced National Wildlife populations may have genetic currently known range of longhorn fairy Refuges (12,765 ha (31, 542 ac)), CDFG characteristics that are different than shrimp to evaluate and select areas that lands (1,703 ha (4,257 ac)), CDFG more central populations, and may be are essential to the conservation of the administration lands (1,052 ha (2,631 important for conservation (Lesica and species and that may require special ac)), California State Parks (1,358 ha Allendorf 1995, Fugate 1998). management. Important factors we (3,394 ac)), and private lands protected considered were the presence of the Longhorn Fairy Shrimp Criteria by WRP easements or agreements (54 ha species and the primary constituent (134 ac)). Combined, these lands are In proposing critical habitat units for elements essential to the conservation of known as the Grasslands Ecological longhorn fairy shrimp we evaluated the the species. A specific description of Area, a 66,773 ha (160,000 ac) area life history and current distribution of each area is outlined below. the species described in the background which supports the largest remaining Unit 1, Altamont Hills Unit A and B, section of this rule, the primary areas of several rare valley floor habitats Contra Costa and Alameda Counties constituent elements described in the within the San Joaquin valley, including (322 ha (795 ac)) examples of alkali grasslands, alkali primary constituent element section of scrublands, wild rye grasslands, cotton this rule, and the threats to the species This unit is proposed as critical wood riparian forests, vernal marshes, described under vernal pool crustaceans habitat for longhorn fairy shrimp relict dune lands, and high quality above and additional threats described because it supports occurrences of the vernal pool habitats. below. This information allowed us to species within clear depression pools in The unit lies north of the City of Los determine which areas are likely to be sandstone outcrops (Eriksen and Belk Banos, southwest of the City of Merced, essential to the conservation of these 1999, EBRPD 2001, CNDDB 2002). and is bisected by the San Joaquin species. These pool types become inundated River. This unit represents Unit 23 for Longhorn fairy shrimp are currently during winter rains and hold water for vernal pool fairy shrimp and Unit 16 for known from three locations, Altamont sufficient lengths of time necessary for vernal pool tadpole shrimp. The Pass area at the Contra Costa and longhorn fairy shrimp incubation, western half of this unit represents Unit Alameda county line, San Luis National reproduction, dispersal, feeding, and 2 for longhorn fairy shrimp and the Wildlife Refuge Complex in western sheltering, but are dry during the eastern half represents Unit 8 for Colusa Merced County, and the Soda Lake area summer and do not necessarily fill with grass, and Unit 6 for Hoover’s spurge. In in San Luis Obispo County. Longhorn water every year; This is an unique addition to the species mentioned fairy shrimp near Soda Lake occur both habitat for longhorn fairy shrimp, and above, vernal pool smallscale, alkali on protected land within the Carrizo helps to maintain a diversity of habitats milk-vetch, western spadefoot toad, and National Monument, and on private for the species. The Altamont Hills Unit California linderiella are present within land. The occurrences on private land is an important area for longhorn fairy this unit as well. are threatened by proposed shrimp because it represents the development of ranchettes, production northern limit of the species range, and Unit 8, Ventura County Unit, Ventura, of animals used in biotechnology is one of only 3 locations where the Santa Barbara, and Los Angeles industries, and road construction. species is known to occur throughout Counties (18,831 ha (46,531 ac)) Longhorn fairy shrimp occurrences in their entire range. Longhorn fairy The Ventura County unit consists of the Altamont Pass area in Contra Costa shrimp in the Altamont Hills Unit are one area in the north-central portion of and Alameda counties have been located about 100 km (60 mi) northwest Ventura County. Vernal pool fairy heavily impacted by wind energy of the next known occurrence at shrimp and Conservancy fairy shrimp development, although some of these Kesterson National Wildlife Refuge in are known to co-occur at relatively high occurrences are currently protected Merced County (Eriksen and Belk 1999). elevation (∼1,700 m (5,500 ft)) forested from development on land owned by It is likely these occurrences have sites within the Los Padres National the East Bay Regional Parks District genetic characteristics that differ from Forest. All of this unit is owned by the (EBRPD) (Eng et al. 1990, EBRPD 2001). other occurrences in other portions of USFS. Almost all of the known Longhorn fairy shrimp are protected the species range, and these localities that possess these two species from development on the Kesterson characteristics may be important for the within the state of California exist at National Wildlife Refuge in Merced conservation of longhorn fairy shrimp much lower elevations in grassland County, however, these occurrences are (Fugate 1992, 1998). Each of these habitats. The map polygon perimeter threatened by wetland management locations reduces the probability that a consists of an area that is known to practices that have led to prolonged chance event would result in the contain vernal pool and Conservancy inundation of longhorn fairy shrimp extinction of the species. fairy shrimp occurrences and isolated habitats and inadvertent introduction of This unit is located primarily on pools that provide habitat for the two fish and bullfrogs (CNDDB 2001). EBRPD and Contra Costa Water District species. The Ventura County unit is In areas where longhorn fairy shrimp land. This unit is located in Altamont essential for the conservation of habitats have been protected, the Hills north and northeast of the City of Conservancy fairy shrimp because it species may be still be threatened if Livermore, and consists of two subunits, contains high elevation (∼ 1,700 m adequate monitoring and management is both near the Contra Costa and Alameda (5,500 ft)) ephemeral aquatic not conducted. Management and county line. Subunit A is located in environments that are rarely associated monitoring are necessary to recognize Contra Costa County directly north of

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the Alameda County line near the Vasco valley, including examples of alkali within the unit total approximately Caves. Subunit B is located directly in grasslands, alkali scrub lands, wild rye 6,220 ha (15,549 ac) and the CDFG lands Alameda County just south of the grasslands, cotton wood riparian forests, total approximately 93 ha (233 ac). Contra Costa County line in the vicinity vernal marshes, relict dune lands, and Other vernal pool habitats in the unit of Brushy Peak. A large number of high quality vernal pool habitats. are located on private land. federally listed and sensitive species are Threats to vernal pool habitats in this This unit is located in the vicinity of found within this area, including the unit include agricultural conversion, California Valley and Soda Lake. State California red legged frog, San Joaquin changes in hydrology, contamination Highway 58 is located north of the unit. kit fox, California tiger salamander and from adjacent land use, and invasion by Most of the habitat is east of Soda Lake California linderiella. aggressive plants. Road, however, Soda Lake Road crosses The unit lies north of the City of Los through the western edge of the unit in Unit 2, Grassland Ecological Unit, Banos, southwest of the City of Merced, several areas. To the east, the unit is Madera, Merced and Stanislaus and is bisected by the San Joaquin bordered by the San Andreas Rift Zone. Counties (29,817 ha (73,677 ac)) River. This unit overlaps Unit 23 for This unit coincides with vernal pool This unit is proposed as critical vernal pool fairy shrimp, Unit 16 for fairy shrimp Unit 25. habitat for longhorn fairy shrimp vernal pool tadpole shrimp, and Unit 7 Vernal Pool Fairy Shrimp Criteria because it contains turbid alkaline for Conservancy fairy shrimp. In vernal pools on Edminster loam and addition to the species mentioned In proposing critical habitat units for Turlock sandy loam that support above, vernal pool smallscale, Alkali vernal pool fairy shrimp we evaluated occurrences of the species (USDA 2001, milk-vetch, western spadefoot toad, and the life history and current distribution Holland 1998, CNDDB 2002). This is the California linderiella are present within of the species, the primary constituent only location where longhorn fairy this unit as well. elements, and the current threats to the shrimp occur in the Central Valley of species. This information allowed us to California. Longhorn fairy shrimp Unit 3, Carrizo Plain Unit, San Luis determine which areas are likely to within this unit are threatened by Obispo, Kern, and Monterey Counties contribute to the conservation of vernal altered hydrology and invasion of (10,466 ha (25,862 ac)) pool fairy shrimp and to delineate units aquatic predators. This unit is also This unit is proposed as critical so that threats to these species might be designated so that special management habitat for longhorn fairy shrimp minimized. actions can be taken to maintain the because it contains occurrences of the The historic range of vernal pool fairy appropriate timing, frequency, and species living within Northern Claypan shrimp extended throughout the low duration of inundation of longhorn fairy type vernal pools as described by and mid-elevation regions of the Central shrimp habitat essential to the Sawyer and Keeler-Wolf (1995) (CNDDB Valley into southern and coastal conservation of longhorn fairy shrimp 2001). Longhorn fairy shrimp in the California and southern Oregon Agate within managed wetland areas. Carrizo Unit are found in shallow Desert. Vernal pool fairy shrimp have This unit is over 209 km (130 mi) alkaline vernal pools within a Valley been extirpated from a number of their from the longhorn fairy shrimp Saltbush Scrub matrix adjacent to the historic occurrences as a result of urban occurrence to the south, and over 80 km 1214 ha (3,000 ac) Soda Lake, the largest development and conversion to (50 mi) from longhorn fairy shrimp alkali wetland in central and southern agriculture. Rapid urbanization in occurrences to the north. This California, which provides a winter Placer, Sacramento, and Tehama occurrence is likely genetically different haven for thousands of migratory birds. counties, California, has accounted for from the two other occurrences (Fugate The Carrizo Plain Unit represents the the majority of recent vernal pool fairy 1992, 1998). Longhorn fairy shrimp are southern extent of the range of longhorn shrimp extirpations, although known from only 3 locations, and each fairy shrimp. Longhorn fairy shrimp in conversion to agriculture in San of these locations is important to the the Carrizo Plain Unit are located 235 Joaquin, Merced, and other counties conservation of this species by km (146 mi) southeast of the closest also has contributed to the continued providing a buffer against catastrophic known occurrences at Kesterson decline of this species. or stochastic events which could National Wildlife Refuge in Merced Remaining vernal pool fairy shrimp extirpate any one occurrence and County (Eriksen and Belk 1999). Such occurrences continue to be threatened seriously reduce the likelihood of isolated populations may have genetic by all of the factors that historically led survival and recovery of the species as characteristics essential to overall long- to the decline of this species. CNDDB a whole. term conservation of the species (Fugate (2001) estimates that 34 percent of the This unit includes natural habitats 1998). The Carrizo Plain contains remaining occurrences of this species within the San Joaquin River watershed. examples of native bunch grass, needle are threatened by development and The Grassland Ecological Unit includes grass, and blue grass grasslands, as well agricultural conversion. Another 15 Kesterson, San Luis, and Merced as populations of federally listed San percent are threatened by military National Wildlife Refuges (9,303 ha (23, Joaquin kit fox, blunt nosed leopard activities (CNDDB 2001). An additional 258 ac)), CDFG lands (1,703 ha (4,257 lizard, giant kangaroo rat, California 15 percent are threatened by operations ac)), CDFG administration lands (1,052 jewel flower, Lost Hills salt brush, Kern and maintenance activities within ha (2,631 ac)), California State Parks mallow and San Joaquin wooly threads utility and transportation right-of-ways, (1,358 ha (3,394 ac)), private lands (The Nature Conservancy 2001). North including grading, discing, and protected by WRP easements or of the Carrizo Plain, vernal pools that trenching activities which destroy the agreements (54 ha (134 ac)), and occur along the San Andreas fault are topographical features necessary for numerous other Federal and private small sag pond types surrounded by vernal pool habitats to support conservation easements. Combined, annual grassland or Interior Coast Range occurrences of vernal pool fairy shrimp these lands are known as the Grasslands Saltbush Scrub (Keeler-Wolf et al. (CNDDB 2001). Pesticide and herbicide Ecological Area, a 66,773 ha (160,000 1998). The Carrizo Plain Unit contains use within utility easements also ac) area which supports the largest portions of the Carrizo Plain National threaten many occurrences of vernal remaining areas of several rare valley Monument administered by the BLM, pool fairy shrimp (CNDDB 2001). Other floor habitats within the San Joaquin TNC, and the CDFG. The BLM lands vernal pool fairy shrimp occurrences are

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threatened by off road vehicle use, Unit 1A, B, C ,D, E, F, and G, North Each of the three proposed Agate Desert logging, mining, vandalism, dumping, Agate Desert Unit, Jackson County (862 units is essential to the conservation of and expansion of landfills (CNDDB ha (2,130 ac)) vernal pool fairy shrimp populations in 2001). This unit consists of seven subunits, the Agate Desert. Numerous occurrences of vernal pool all located to the north of Little Butte Unit 4A and B, Table Rocks Unit, fairy shrimp are threatened by altered Creek. Three of the subunits are west of Jackson County (361 ha (892 ac)) the Rogue River, and the remaining four hydrology. In some cases vernal pools This unit consists of two subunits, are to the east. All but one of these have been altered so that they contain located on two flat-topped mesas known subunits are located to the south of U.S. water year round, allowing predators as Upper and Lower Table Rocks, Route 234 (Sam’s Valley Highway). The such as bullfrogs and fish to colonize situated north and west of the Rogue one remaining unit is located to the east vernal pool habitats (CNDDB 2001). In River. These rimrock features are of the Rogue River, about 2.4 km (1.5 other cases artificial run off has resulted remnants of ancient lava flows that mi) north of the confluence with Reese in the delivery of materials that destroy filled portions of the Rogue River nearly Creek. This unit represents the northern vernal pool water quality, including 10 million years ago (Bureau of Land limit of the species’ distribution and sediment from cement plants, pesticides Management (BLM) 1998). Subsequent therefore may contribute significantly to from vineyards and other irrigated erosion of softer geologic layers has left the species’ genetic diversity (Lesica agricultural lands, pesticides from golf these harder, andesite (volcanic rock) and Allendorf 1995). It is of sufficient courses, and sediment from surrounding formations rising some 245 m (800 ft) size to sustain the natural ecosystem developments (CNDDB 2001). above the present Rogue Valley. Vernal processes (e.g., fires) that have pools on the Table Rocks differ from Vernal Pool Fairy Shrimp Unit Review historically influenced vernal pool those of the Agate Desert, in that they habitat and is disjunct from the nearest are formed over an impervious layer of We conducted a regional review other unit proposed for Oregon, Unit 4, bedrock. This unit represents a unique across the range of vernal pool fairy by over 3.2 km (2 mi). shrimp to evaluate and select vernal habitat for vernal pool fairy shrimp in pool habitats that are essential to the Unit 2A, B, C, D, and E, White City East Oregon; Table Rocks fairy shrimp conservation of the species and that Unit, Jackson County (911 ha (2,251 ac)) populations differ ecologically from require special management. Important This unit consists of five subunits, fairy shrimp populations in the Agate factors we considered were the known located east of U.S. Route 62 (Crater Desert. The Table Rocks Unit is disjunct presence of vernal pool fairy shrimp and Lake Highway) and south and southeast from the North Agate Desert Unit by the presence of vernal pools and vernal of Dutton Road. The largest and over 3.2 km (2 mi), and from the White pool complexes supporting the easternmost of the subunits occurs just City West Unit by approximately 2.4 km hydrological characteristics necessary to to the east and north of . This (1.5 mi). provide the primary constituent unit provides the easternmost extent of California elements essential to the conservation of the species’ range in Oregon. It the species. represents a significant component of Unit 5, Redding Unit, Shasta County (1,849 ha (4,569 ac)) We identified areas that support high the species’ original range in the state numbers of vernal pool fairy shrimp and is of a sufficient size to sustain the This unit is proposed as critical occurrences identified by CNDDB (2002) natural ecosystem processes (e.g., fires) habitat for vernal pool fairy shrimp within vernal pool complexes that have historically influenced vernal because it contains the largest intact containing the primary constituent pool habitat. It is disjunct by more than vernal pool habitat in the northern elements for the species mapped by 1.6 km (1 mi) from Unit 3, White City portion of vernal pool fairy shrimp’s Holland (1998) and a number of other West, and by approximately 5.6 km (3.5 range in California. Occurrences of the species (CNDDB 2002) within vernal sources throughout the range of the mi) from the North Agate Desert Unit. pools mapped by Holland (1998) are species. We have identified areas Unit 3A, B, and C, White City West Unit, found on old alluvial terraces above the necessary to conserve the species by Jackson County (931 ha (2,301 ac)) Sacramento River and often on Redding maintaining a portion of the species This unit consists of three subunits, and Corning soil complexes (Shasta current range and distribution and located west of Agate Road, south of the County 2001). Generally these pools are including some of the different kinds of Rogue River, and east of Bear Creek. small in size, although the Stillwater habitats in which the species is known This unit contains the best remaining Plains area supports unique pools to occur. However, as is the case with examples of the original Agate Desert which are several acres in size. These all critical habitat designations, areas mounded prairie habitat. It is of vernal pools provide feeding and outside of this designation may still sufficient size to sustain the natural sheltering habitat for the species and prove to be necessary to the recovery of ecosystem processes (e.g., fires) that remain inundated for sufficient lengths this species. A description of each area have historically influenced vernal pool of time to allow vernal pool fairy shrimp is outlined below. habitat; it is disjunct from the White to hatch, mature, and reproduce. Oregon City East Unit by more than 1.6 km (1 The boundaries of the unit were mi) and from the Table Rocks Unit by delineated to include the interconnected Vernal pool fairy shrimp are the only over 2.4 km (1.5 mi). pools, swales, and associated uplands species addressed in this proposed rule We believe that, taken together, the mapped by Holland (1998) that that occur in Oregon. Four units in proposed Agate Desert units (Units 1–3) contribute to the filling and drying of Oregon are proposed as essential to the comprise a functional vernal pool the vernal pools where vernal pool fairy conservation of vernal pool fairy complex consisting of vernal pools, shrimp occur, and which maintain shrimp. The Oregon units occur mounded prairie and associated suitable periods of pool inundation, approximately 200 km (125 mi) north of uplands, where natural processes, water quality, and soil moisture for the nearest unit proposed for this including connectivity, function within vernal pool fairy shrimp hatching, species in California. or near the natural range of variability. growth, reproduction, and dispersal.

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This unit supports systems of incubation, reproduction, dispersal, California linderiella, Ahart’s hydrologically interconnected pools and feeding, and sheltering. Vernal pool paronychia (Pyronychia ahartii), swales within a matrix of surrounding fairy shrimp within this unit occur Henderson’s bent grass, and dwarf uplands that together form within vernal pools formed on alluvial downingia (Downingia pusilla). hydrologically and ecologically terraces west of the Sacramento River Unit 7, Vina Plains Unit, Tehama, and functional units called vernal pool and associated with Newville/Corning Butte Counties (23,883 ha (59,015 ac)) complexes. These features contribute to and Redding/Corning soil complexes the filling and drying of the vernal pool, (USDA 2001) exhibiting well developed This unit is proposed as critical and maintain suitable periods of pool mima mound topography. The vernal habitat because it contains vernal pool inundation, water quality, and soil pools within this unit are generally fairy shrimp (CNDDB 2001) living moisture for vernal pool crustaceans to small and may not be inundated long within large vernal pool grassland areas complete their life-cycle. enough to support other longer-lived that support aggregations or systems of This unit represents contains all of vernal pool species. hydrologically interconnected pools, the primary constituent elements for the The boundaries of the unit were swales, and other ephemeral wetlands species and comprises the northern delineated to include the interconnected and depressions within a matrix of extent of the species range in California. pools, swales, and associated uplands surrounding uplands that together form Because occurrences within this unit are mapped by Holland (1998) that hydrologically and ecologically at the limit of the species range in contribute to the filling and drying of functional units (EPA 1994, Holland California they may have genetic the vernal pools where vernal pool fairy 1998, Tehama County 1999). The characteristics essential to overall long- shrimp occur, and which maintain boundaries of this unit were delineated term conservation of the species (i.e., suitable periods of pool inundation, to include the interconnected pools, they may be genetically different than water quality, and soil moisture for swales, and uplands mapped by more central populations) (Fugate 1992, vernal pool fairy shrimp hatching, Holland (1998) that contribute to the 1998, Lesica and Allendorf 1995). growth, reproduction, and dispersal. filling and drying of the vernal pools Most of the land included within this This unit contains several large (i.e., where vernal pool fairy shrimp occur, unit is privately owned. The BLM owns over (4,068 ha) 10,000 ac) vernal pool and maintain suitable periods of pool 17 ha (42 ac) within this unit and a habitat complexes. These areas are inundation, water quality, and soil further 52 ha (130 ac) is private land relatively undisturbed, hydrologically moisture for vernal pool fairy shrimp to protected under conservation easement intact vernal pool habitats that will complete their life-cycles. or agreement as part of the Wetlands likely continue to support natural vernal The vernal pools within this unit Reserve Program (WRP). The Stillwater pool ecosystem processes and maintain contain water during the winter, and Plains Conservation Bank, specifically suitable habitat conditions for vernal provide the necessary length and timing established to contribute to the recovery pool fairy shrimp. This unit also of inundation, water quality, and of vernal pool fairy shrimp, is located provides essential habitat for migratory freedom from predation that allow within this unit. The City of Redding waterfowl that aid in the dispersal of vernal pool fairy shrimp to hatch, feed, and other local and state planning vernal fairy shrimp and other vernal reproduce, and shelter. Vernal pool fairy organizations are currently developing a pool crustacean cysts. shrimp in this unit occur within HCP to provide for the conservation of The majority of the lands included Northern Volcanic Mudflow vernal vernal pool fairy shrimp. This unit within this unit are privately owned. pools, these pools are generally small would provide an area where The CDFG owns 175 ha (433 ac) within and tend to be inundated for relatively conservation efforts for vernal pool fairy this unit. Urban expansion from the city short periods of time. Vernal pool fairy shrimp could take place. of Red Bluff, and agricultural shrimp are also found within larger This unit is located in the area east of conversion in other portions of the unit, vernal pools forming on hardpans the Redding Municipal Airport between threaten existing vernal pool fairy within this unit. These pools tend to be Airport Road to the west and Deschutes shrimp habitats throughout this unit. larger and longer lasting than Northern Road to the east. The unit extends to However, this unit also contains large Volcanic Mudflow pools, and may also Dersch Road in the south and towards private conservation areas established support occurrences of other, longer Lassen Park Highway in the north. This specifically to contribute to the recovery lived species such as Conservancy fairy unit comprises a portion of the of vernal pool fairy shrimp and shrimp. Stillwater Plains. This unit overlaps compensate for the loss of vernal pool The pool types within this unit slender Orcutt grass Unit 2B and vernal habitat, including the 2,023 ha (5,000 maintain the diversity of habitats in pool tadpole shrimp Unit 1. Other ac) Tehama Fiber Farm mitigation area. which vernal pool fairy shrimp are sensitive species occurring within this CDFG’s Thomes Creek Ecological known to occur and provide relatively unit include Red Bluff dwarf rush Reserve is also located within this unit. undisturbed, hydrologically intact (Juncus leiospermus var. leiospermus), This unit extends from southwest of vernal pool habitats that will likely California linderiella (Linderiella Red Bluff at Red Bank Creek south to continue to support natural vernal pool occidentalis), Henderson’s bent grass Thomes Creek. The eastern boundary ecosystem processes and maintain (Agrostis hendersonii), and four angled includes the vernal pool habitat from suitable habitat conditions for vernal spike rush (Eleocharis quadrangulata). the Southern Pacific Railroad near pool fairy shrimp. This unit also Coyote Creek south paralleling Interstate provides habitat for migratory waterfowl Unit 6, Red Bluff Unit, Tehama County 5 to Thomes Creek. Other vernal pool that aid in the dispersal of vernal pool (18,562 ha (45,865 ac) species occurring within this unit fairy shrimp and other vernal pool This unit is proposed as critical include Boggs Lake hedge-hyssop crustacean cysts. habitat for vernal pool fairy shrimp (Gratiola heterosepela), Baker’s The majority of the lands included because it contains the species (CNDDB navarretia (Navarretia leucocephala ssp. within this unit are privately owned. 2002) within vernal pools mapped by bakeri), Red Bluff dwarf rush, Douglas’ This unit contains The Nature Holland (1998) and the pools contain pogogyne (Pogogyne douglasii), western Conservancy’s (TNC) Vina Plains water for sufficient periods of time spadefoot toad (Scaphiopus preserve as well as other TNC lands necessary for vernal pool fairy shrimp hammondi), legenere (Legenere limosa), 2,264 ha (5,660 ac) and conservation

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easements 4,348 ha (10,870 ac). Other and associated with Anita clay and within this unit live within pools ownership within this unit includes 57 Tuscan loam soils (USDA 1994). These occurring primarily on the Tuscan ha (142 ac) of private land protected vernal pools are generally small, and geologic formation (Liss 2001, Keeler- under conservation easement or exhibit well developed mima mound Wolf et al. 1998), which are some of the agreement under the Natural Resource topography. They contain water for few remaining examples of Northern Conservation Services’s (NRCS) sufficient periods of time necessary for Volcanic Mudflow vernal pools Wetland Reserve Program (WRP). The vernal pool fairy shrimp incubation, described by Sawyer and Keeler-Wolf Vina Plains area has been the focus of reproduction, dispersal, feeding, and (1995). Northern Volcanic Mudflow a number of research projects, including sheltering. vernal pools are generally small and The boundaries of this unit were long-term adaptive management and tend to be inundated for relatively short monitoring efforts evaluating the effects delineated to include the interconnected periods of time. These pool types are of grazing and fire on vernal pool plants, pools, swales, and associated uplands animals, and ecosystems (Griggs 2000). mapped by Holland (1998) that essential to maintain the diversity of Much of the basic life history contribute to the filling and drying of habitats in which vernal pool fairy information known about vernal pool the vernal pools where vernal pool fairy shrimp are known to occur. Vernal pool crustaceans was collected at Vina Plains shrimp occur, and maintain suitable fairy shrimp are also found living in (e.g., Lanway 1974, Ahl 1991, Syrdahl periods of pool inundation, water Northern Hardpan vernal pools within 1993, Gallagher 1996). The importance quality, and soil moisture for vernal this unit. These pools tend to be larger of the Vina Plains area has been pool fairy shrimp hatching, growth and and longer lasting than the Northern recognized by a number of state, local, reproduction, and dispersal, but not Volcanic Mudflow pools. and Federal agencies, and they have necessarily every year. These features The boundaries of the unit were been the focus of several conservation contribute to the filling and drying of delineated to include the interconnected planning efforts. TNC, CDFG, the the vernal pool, and maintain suitable pools, swales, and associated uplands periods of pool inundation, water Service, the EPA, the CNPS, the NRCS mapped by Holland (1998) that quality, and soil moisture for vernal WRP, and researchers from California contribute to the filling and drying of State University (CSU) at Chico have all pool crustacean hatching, growth and the vernal pools where vernal pool fairy supported research and conservation reproduction, and dispersal. efforts for vernal pool species within This unit contains large vernal pool shrimp occur, and which maintain this unit. habitat areas in the northwestern suitable periods of pool inundation, This unit is located in the portion of the range of vernal pool fairy water quality, and soil moisture for northeastern portion of the Sacramento shrimp. These areas provide relatively vernal pool fairy shrimp hatching, Valley from Deer Creek in Tehama undisturbed, hydrologically intact growth, reproduction, and dispersal. County to Chico in Butte County. The vernal pool habitats that will likely The majority of the lands included unit extends south and east of the continue to support natural vernal pool within this unit are privately owned. Sacramento River paralleling the low ecosystem processes and maintain This unit contains Service lands (76 ha elevation foothill region of the Sierra suitable habitat conditions for vernal (187 ac)) and 7 ha (17 ac) of CDFG Nevada and represents the northeastern pool fairy shrimp. These vernal pool administered land. This unit contains a extent of vernal pool fairy shrimp’s habitats support systems of few areas that have been preserved range in California. This unit coincides hydrologically interconnected pools and within the City of Chico. However, the with Unit 3 for vernal pool tadpole swales within a matrix of surrounding amount of vernal pool habitat currently shrimp, and incorporates Unit 1 for uplands that together form protected within the unit is very small. Conservancy fairy shrimp, Unit 4 for hydrologically and ecologically Urban expansion, particularly in the slender Orcutt grass, Unit 2 for Greene’s functional units called vernal pool vicinity of Chico, is the greatest threat tuctoria, Unit 1 for hairy Orcutt grass, complexes. to existing vernal pool habitats Unit 1 for Hoover’s spurge, and Units 1 This unit extends from the Tehama/ throughout this unit. and 2 for Butte County meadowfoam. Glenn county border in the south, west Other vernal pool species occurring of Ingrahm Road and east of the Black This unit occupies an area from near within this unit include Boggs Lake Butte Reservoir, to the vicinity of Rice Chico south to near the intersection of hedge-hyssop, Red Bluff dwarf rush, Creek in the north. This unit also Highway 99 and State Route 149 in Douglas’ pogogyne, western spadefoot contains a Pacific Gas and Electric Butte County. The unit extends toad, legenere, California linderiella, (PG&E) pipeline mitigation area southeast of the Sacramento River California tiger salamander (Ambystoma established specifically for the paralleling the low elevation foothill californiense), Ahart’s paronychia, conservation of vernal pool fairy region of the Sierra Nevada. This unit is Henderson’s bent grass, Sanford’s shrimp. Other vernal pool species part of Unit 4 for vernal pool tadpole arrowhead (Sagittaria sanfordii), and occurring within this unit include shrimp, and incorporates Unit 3 for dwarf downingia. Baker’s navarretia, western spadefoot Greene’s tuctoria, Unit 2 for hairy Orcutt toad, Ahart’s paronychia, and dwarf Unit 8, Orland Unit, Tehama County grass, Unit 2 for Hoover’s spurge, and downingia. All the lands within this (5,760 ha (14,233 ac) Unit 3 for Butte County meadowfoam. unit are privately owned. This unit is proposed as critical Other vernal pool species occurring habitat for vernal pool fairy shrimp Unit 9, Oroville Unit, Butte County within this unit include Boggs Lake because it contains occurrences of the (1,456 ha (3,598 ac)) hedge-hyssop, Red Bluff dwarf rush, species and vernal pools, swales, and This unit is proposed as critical Douglas’ pogogyne, western spadefoot associated uplands that support vernal habitat for vernal pool fairy shrimp toad, legenere, California linderiella, pool fairy shrimp (Holland 1998, because it supports vernal pools, swales, California tiger salamander, Ahart’s Tehama County 2001, CNDDB 2002). and associated uplands mapped by paronychia, Henderson’s bent grass, Vernal pool fairy shrimp in this unit are Holland (1998) and by the EPA (1994) Sanford’s arrowhead, and dwarf found in vernal pools formed on alluvial and contains vernal pool fairy shrimp downingia. terraces west of the Sacramento River (CNDDB 2001). Vernal pool fairy shrimp

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Unit 10, Sacramento National Wildlife Orcutt grass, Unit 3 for Hoover’s spurge, species found within this unit include Refuge Unit, Glenn and Colusa Counties and Unit 2 for Conservancy fairy vernal pool tadpole shrimp and (5,718 ha (14,129 ac)) shrimp. Other important vernal pool California linderiella. and associated upland species found in This unit is proposed as critical Unit 12, Western Placer County Unit the unit include pappose spikeweed habitat for vernal pool fairy shrimp (19,387 ha (47,905 ac)) because it contains occurrences of the (Hemizonia parryi ssp. rudis), Fremont’s goldfields (Lasthenia fremontii), alkali The Western Placer Unit was species (CNDDB 2002) within the vernal identified as critical habitat for vernal pools and swales mapped by Holland goldfields (Lasthenia platycarpha), Scribe’s popcorn flower (Plagiobothrys pool fairy shrimp because it contains (1998). Vernal pool fairy shrimp in this numerous occurrences of the species unit live within Northern Claypan scriptus), Hoover’s downingia (Downingia bella), folded downingia (CNDDB 2001). The unit boundary was vernal pools, as defined by Sawyer and (Downingia ornatissima var. drawn to include these occurrences and Keeler-Wolf (1995). These vernal pools ornatissima), Heckard’s peppergrass the vernal pool complexes in which are associated with alkaline soils, such (Lepidium latipes var. heckardii), they occur as mapped by Holland (1998) as Willows and Riz soils series, and heartscale (Atriplex cordulata), and Glazner (2001) and as visible on typically form alkali playas which are brittlescale (Atriplex depressa), San SPOT imagery. These complexes form larger and contain a more diverse Joaquin spearscale (Atriplex interconnected hydrologic units of species composition than the hardpan joaquiniana), Ferris’ milkvetch pools, swales and uplands that together pools further south (Keeler-Wolf et al. (Astragalus tender var. farrisiae), spike- maintain the timing and duration of 1998). These pools are inundated for a primrose (Boisduvalia stricta), sessile inundation necessary for vernal pool sufficient period of time to support all mousetail (Myosurus sessilis), and fairy shrimp to hatch, mature, and of the life history requirements of vernal palmate-bracted bird’s beak reproduce. Vernal pool fairy shrimp pool fairy shrimp. Vernal pools on the (Cordylanthus palmatus). within this unit occur in both Northern Sacramento National Wildlife Refuge Hardpan and Northern Volcanic Complex , are often large, shallow and Unit 11, Beale Unit, Yuba and Placer Mudflow vernal pools as described by alkaline (Silveira 2000). Vernal pool Counties (2,853 ha (7,049 ac)) Sawyer and Keeler-Wolf (1995). This habitats on the refuge are specifically We propose the Beale Unit as unit also supports vernal pool fairy managed for the conservation of listed essential for the conservation of vernal shrimp found in vernal pools on species, and to promote habitat for pool fairy shrimp because it contains Exchequer soils on the Mehrten geologic migratory birds and waterfowl. large, relatively undisturbed vernal pool formation, a rare type of Northern The Sacramento National Wildlife grassland habitats and a diversity of Volcanic Mudflow vernal pool which Refuge contains the last remnants of the vernal pool habitat types supporting has been reduced to only a few acres in widespread Colusa Plains vegetation vernal pool fairy shrimp (CNDDB 2001, extent. The pools are relatively short that once covered the entire Colusa Jones and Stokes 1997b, Jones and lived and do not provide habitat for Basin (Silveira 2000). Vernal pool Stokes 2002, Platenkamp 1998). Vernal most other species of fairy shrimp habitats within the area have become pool fairy shrimp within this unit are (CNDDB 2001). greatly fragmented and isolated from found throughout several large vernal This unit includes a large number of other habitats in the region due to land pool complexes. These complexes occur conservation areas established conversion to agriculture. This unit is on four major geologic formations: the specifically to contribute to the recovery important to maintain opportunities for Modesto Formation; the Riverbank of vernal pool fairy shrimp partly vernal pool fairy shrimp dispersal Formation; the Laguna Formation; and established through conservation efforts between units to the north, over 50 km the Mehrten Formation (Platenkamp under section 7 of the Act. These (31 mi) distant, and those to the south, 1998). These habitats provide the include the Ahart Preserve, one of the over 110 km (68 mi) distant. Without hydrological characteristics necessary few remaining examples of Northern this unit, vernal pool fairy shrimp for vernal pool fairy shrimp growth, Volcanic Mudflow vernal pools in the occurrences to the north and south reproduction, dispersal, and other region, as well as the Orchard Creek would be more than 160 km (100 mi) primary constituent elements essential Conservation Bank. This conservation distant from one another, a distance at to the conservation of this species. bank was established for the protection which genetic evidence indicates they Different geologic formations provide a of vernal pool fairy shrimp and to are effectively isolated (Fugate 1992, diversity of habitats for vernal pool fairy compensate for the loss of thousands of 1998). shrimp primarily through their effects acres of vernal pool grassland habitats The boundaries of the unit were on pool size and depth (Platenkamp throughout Placer and Sacramento delineated to include the interconnected 1998, Helm 1998). counties. Additional smaller pools, swales, and associated uplands This unit contains DOD land (419 ha conservation areas in this unit are mapped by Holland (1998) and (1,048 ac)) at Beale Air Force Base and located within the cities of Lincoln and identified by the Service (Silveira 2000) BLM (3 ha (8 ac)) lands. Other lands Roseville, and in Placer County. that contribute to the filling and drying within this unit are located on private Approximately 20 percent of all of the vernal pools where vernal pool property, and are threatened by mitigation areas established for the long- fairy shrimp occur, and which maintain agricultural conversion, urban term protection of vernal pool fairy suitable periods of pool inundation, expansion, and the expansion of shrimp are found within this unit. water quality, and soil moisture for Highway 70 and other transportation Placer County is currently developing a vernal pool fairy shrimp hatching, projects planned in the region. This unit HCP for the conservation of vernal pool growth, reproduction, and dispersal. is found east of Yuba City and State fairy shrimp in this area. A WRP This unit is primarily located on the Highway 65, generally south of easement of 63 ha (157 ac) is within this Sacramento National Wildlife Refuge Hammonton Road and north of South unit. (5,126 ha (12,816 ac)). Any additional Beale Road and 6th Street. The unit The Western Placer Unit contains 70 lands within this unit are privately includes the western portion of Beale percent of the remaining vernal pool owned. This unit overlaps with Unit 6 Air Force Base, west of Erle Street and habitats in Placer County. TNC for Greene’s tuctoria, Unit 3 for hairy Doolittle Drive. Other rare vernal pool identified this area as one of the

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outstanding vernal pool sites remaining the vernal pools where vernal pool fairy hatching, growth, and reproduction. in the Sacramento Valley. Vernal pool shrimp occur, and which maintain Vernal pool fairy shrimp within this habitats within this unit are threatened suitable periods of pool inundation, unit are found in a diversity of pool by the development of large water quality, and soil moisture for types, including Northern Volcanic transportation projects, the development vernal pool fairy shrimp hatching, Mudflow vernal pools on Pardee and of a university and associated growth, reproduction, and dispersal. Pentz soils, vernal pools occurring on infrastructure, residential This area supports a diversity of low terrace landforms associated with developments, gravel mining vernal pool species and habitats, and is San Joaquin soils, and vernal pools operations, and agricultural conversion the focus of numerous conservation occurring on high terrace landforms in the western portion of Placer County. planning efforts. This area has been associated with Redding and Corning This unit generally occurs in western identified by the Sacramento Valley soils. These pool types provide a Placer County immediately north of the Open Space Conservancy, the CNPS, diversity of habitats for this species. The Sacramento County line, north of the and TNC as an excellent example of large vernal pool complexes found City of Roseville and the City of vernal pool grasslands, supporting a within this unit provide relatively Rocklin. The northern boundary occurs rich and diverse community of vernal undisturbed, hydrologically intact just north of the City of Lincoln. This pool endemic plants and animals within vernal pool habitats that support natural unit occurs mostly west of State Sacramento County. This unit contains vernal pool ecosystem processes and Highway 65. This unit provides habitat areas on private, county, and Federal maintain suitable habitat conditions for for sensitive vernal pool species such as land, including lands leased or owned vernal pool fairy shrimp. Bogg’s Lake hedge-hyssop, Red Bluff by Sacramento County at Mather Many areas within this unit include dwarf rush, western spadefoot toad, Regional Park, the former Mather Air actively restored and created vernal legenere, California linderiella, Ahart’s Force Base, and at the county landfill. pools that support occurrences of vernal paronychia, and dwarf downingia. A BLM owns 6 ha (18 ac) within this unit. pool fairy shrimp (CNDDB 2001). This number of riparian species are also Vernal pool habitats in this unit are unit is also proposed as critical habitat found in this unit in the vernal pool threatened by urbanization from the to encourage that special management grasslands that border Coon Creek. expanding cities of Sacramento and Elk actions will be taken so that these areas Grove. Conversion to intensive continue to provide the necessary Unit 13, Mather Unit, Sacramento agriculture, particularly vineyards, is timing and length of inundation for County (14,866 ha (36,733 ac)) also a significant threat to vernal pool vernal pool fairy shrimp survival. In This unit is proposed as critical fairy shrimp in this unit. many cases, the special management habitat for vernal pool fairy shrimp This unit includes the area to the action necessary will simply be to because it contains occurrences of the southeast of the City of Sacramento in monitor vernal pool hydrology to verify species and vernal pool habitats that Sacramento County, east of Highway 99 the success of the restoration effort. sustain the necessary timing and length and south of Interstate 80. The unit is This unit contains a number of of inundation required for the species to generally east of Bradshaw Road, conservation areas established hatch, mature, reproduce, disperse, and northwest of Grant Line Road, west of specifically to contribute to the enter dormancy (Holland 1998, Scott Road, and includes a portion of conservation of vernal pool fairy Sacramento County 1999, CNDDB Mather Field. The unit is bisected by the shrimp, and to compensate for the loss 2001). Vernal pool fairy shrimp in this Folsom South Canal. This unit also of thousands of acres of vernal pool unit occur within a diversity of vernal represents Unit 8 for vernal pool tadpole grassland habitats throughout the pool habitats, including young or low shrimp, and contains Unit 6 for slender Sacramento Valley. Many areas within terrace vernal pools on the Riverbank Orcutt grass and Unit 2 for Sacramento this unit are managed specifically to Formation, old or high terrace vernal Orcutt grass. In addition to these provide habitat for migratory waterfowl, pools on the Laguna and Arroyo Seco species, this unit contains occurrences this unit also provides essential habitat geologic formations, and Northern of many other rare, endemic vernal pool for avian species that aid in the Volcanic Mudflow vernal pools on the species including midvalley fairy dispersal of vernal pool fairy shrimp Mehrten and Valley Springs geologic shrimp (Branchinecta mesovalliensis), and other vernal pool crustacean cysts. formations. Bogg’s Lake hedge-hyssop, western This unit contains state and federally This unit includes several spadefoot toad, legenere, California owned land, as well as private conservation areas established by linderiella, and Ahart’s paronychia. properties. Portions of the Cosumnes private entities, including the Sunrise River Preserve occur within this unit. Douglas Conservation Bank, the Arroyo Unit 14, Cosumnes Unit, Sacramento The Cosumnes River Preserve is jointly Seco Conservation Bank, the Churchill County (26,600 ha (65,728 ac)) owned and managed by a variety of Downs mitigation area, and Teichert This unit is proposed as critical state, local, and Federal agencies mitigation areas. These areas were habitat for vernal pool fairy shrimp including the BLM , CDFG, Ducks established specifically to contribute to because it supports the species (CNDDB Unlimited, Inc., California Department the conservation of vernal pool fairy 2001) and its habitat (Holland 1998, of Water Resources, Sacramento Co. shrimp, and represent compensation Sacramento County 1999). The unit Dept. of Regional Parks, Open Space, measures for the loss of thousands of boundary was drawn to include several and Recreation, TNC, and the Wildlife acres of vernal pool fairy shrimp habitat large vernal pool complexes mapped by Conservation Board. The Cosumnes within Sacramento County. The Holland (1998) and numerous River Preserve encompasses and continued functioning of these areas is individual vernal pools mapped by protects thousands of acres of wetlands essential to the conservation of vernal Sacramento County (1999) and visible and adjacent uplands, oak woodlands, pool fairy shrimp and other vernal pool on SPOT imagery. Together, these and riparian forests along the Cosumnes species. The boundaries of the unit were identified habitats represent some of the River, the only undammed river on the delineated to include the interconnected largest remaining vernal pool complexes west slope of the Sierra. The Cosumnes pools, swales, and associated uplands in the Sacramento Valley that provide floodplain is a haven for tens of mapped by Holland (1998) that the necessary timing and duration of thousands of migratory waterfowl, contribute to the filling and drying of inundation for vernal pool fairy shrimp songbirds, and raptors, a large portion of

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the Central Valley’s population of The Vacaville Unit supports the only increases the likelihood that it will greater sandhill cranes, and for rare examples of Northern Hardpan vernal continue to support natural vernal pool reptiles and mammals like the river pool types, including high terrace vernal ecosystem processes and maintain otter and threatened giant garter snake. pools on Corning soils, on the western suitable habitat conditions for vernal Several large, diverse, vernal pool side of the valley. These unique habitats pool fairy shrimp. This unit also landscapes are protected within this are necessary to maintain the diversity provides essential habitat for migratory unit including the Howard Ranch and of habitats in which vernal pool fairy waterfowl that aid in the dispersal of Valensin Ranch. The Clay Station shrimp are known to occur. This unit is vernal pool fairy shrimp and other Mitigation Bank, Laguna Creek located primarily on private land vernal pool crustacean cysts. Vernal Mitigation Bank, and the Borden Ranch although the State Land Commission pool fairy shrimp in the Jepson Prairie Mitigation site are included in this unit, owns approximately (60 ha (149 ac)) grassland area inhabit unique as well as a number of smaller within this unit. Vernal pool habitats combinations of low terrace and basin conservation areas including the Rancho within this unit are threatened by rim landform vernal pools on a diversity Seco Preserve. Land ownership and urbanization from the expanding City of of soil types. protection within the unit includes Vacaville. Solano County is currently Jepson Prairie has long been CDFG (630 ha (1,557 ac)), TNC (3,988 ha developing a HCP which will address recognized as an outstanding example of (9,970 ac)) lands and WRP easements (4 the conservation of vernal pool fairy vernal pool ecosystems. In 1987 the ha (11 ac)). This area has been identified shrimp in this area. National Park Service (NPS) named by the Sacramento Valley Open Space The Vacaville Unit is situated north Jepson Prairie a National Natural Conservancy, the CNPS, and TNC as an and northeast of the City of Vacaville. Landmark, a designation given to sites excellent example of vernal pool The eastern boundary parallels that provide high quality habitat for grasslands, supporting a rich and Interstate 80, the northern boundary threatened or endangered species. diverse community of vernal pool parallels Midway Road, and the western Jepson Prairie is the target of ongoing endemic plants and animals within boundary is near Browns Valley Road. conservation planning efforts and active Sacramento County. Urban expansion, This unit also provides habitat for management. As part of the UC Reserve conversion from grazing to other vernal pool tadpole shrimp, dwarf System, this area also provides critical agricultural practices, particularly downingia, as well as Swainson’s hawks research opportunities for scientists to vineyards, have greatly affected existing (Buteo swainsoni) and burrowing owls. study vernal pool species, including vernal pool habitats throughout this vernal pool fairy shrimp. Unit 16, Jepson Prairie Unit, Solano The unit contains 1,038 ha (2,564 ac) unit. County (34,910 ha (86,261 ac)) This unit for vernal pool fairy shrimp owned and or administered by CDFG. occupies the area south of Deer Creek We propose this area as critical Additional lands are owned by DOD and Cosumnes River to just north of the habitat for vernal pool fairy shrimp (760 ha (1,879 ac)), California State Sacramento and San Joaquin county line because it supports numerous Parks (15 ha (38 ac)), and the State Land near Simmerhorn Road. The eastern occurrences of the species (CNDDB Commission (109 ha (273 ac)). NRCS boundary is the low elevation foothills 2001) living within systems of holds easements or agreements near the Amador county line. The hydrologically interconnected pools and protecting 436 ha (1,090 ac) of private western limit follows Dillard Road swales within a matrix of surrounding land in the unit under the WRP south to Colony Road near Herald. This uplands that together form program. TNC also holds a conservation unit also coincides with Unit 10 for hydrologically and ecologically easement on 623 ha (1,558 ac) in the vernal pool tadpole shrimp, and Unit 3 functional vernal pool complexes. These unit. The Jepson Prairie Preserve is for Sacramento Orcutt grass. Other features contribute to the filling and jointly managed by the Solano County sensitive species found within this unit drying of the vernal pools where vernal Land Trust and the UC Reserve System. include Bogg’s Lake hedge-hyssop, pool fairy shrimp are known to occur, CDFG owns several ecological reserves western spadefoot toad, legenere, and maintain suitable periods of pool in the vicinity of Jepson Prairie. This California linderiella, California tiger inundation, water quality, and soil unit also contains several privately salamander, Ahart’s paronychia, moisture for vernal pool fairy shrimp owned mitigation areas, and portions of Henderson’s bent grass, Sanford’s hatching, growth and reproduction, and Travis Air Force Base. Within the arrowhead, pincushion navarretia dispersal. These features have been greater Jepson Prairie grassland area, (Navarretia myersii ssp. deminuta), and identified and mapped by Solano existing vernal pools are threatened by dwarf downingia. County (2000), Holland (1998), and the agricultural conversion, landfill Solano County Farmlands and Open expansion, power plant construction, Unit 15 Vacaville Unit, Solano County Space (2000). The Jepson Prairie Unit and utility maintenance. (1,624 ha (4,012 ac)) encompasses the greater Jepson Prairie This unit is located in the southern This unit is proposed as critical grassland area, one of the most pristine, portion of Solano County, southeast of habitat because it contains vernal pool intact vernal pool ecosystems remaining Interstate 80 and the cities of Fairfield fairy shrimp within large vernal pool in California. Jepson Prairie contains and Vacaville, north of Grizzly Bay and complexes (Holland 1998, Solano large, playa-like vernal pools which may Montezuma Slough, west of the County 2000, CNDDB 2001). This unit be over several acres in size, including Sacramento River and the Solano and contains vernal pool fairy shrimp the 32 ha (80 ac) Olcott Lake. These Sacramento County line, and south of occurring within vernal pools and larger pools often occur in complexes Midway Road and the City of Dixon. swales formed on Corning gravelly loam with smaller pools and hogwallow The unit is bisected by Highway 13. soil series, which form Northern depressions. This unit is also described as Unit 11 for Hardpan vernal pools (Sawyer and This unit includes one of only two vernal pool tadpole shrimp. This unit Keeler-Wolf 1995). These pool types large contiguous areas of habitat contains Unit 3 for Colusa grass, Unit 2 maintain the necessary conditions for remaining for vernal pool fairy shrimp for Solano grass, Unit 3 for Conservancy vernal pool fairy shrimp hatching, on the floor of the Central Valley. The fairy shrimp, and Unit 4 and portions of feeding, reproduction, and dispersal relatively undisturbed, hydrologically Unit 5 for Contra Costa goldfields. Other (CNDDB 2001). intact condition of the Jepson Prairie rare vernal pool species which occur in

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this unit include alkali milk-vetch Unit 18, San Joaquin Unit, San Joaquin Vernal pool fairy shrimp in the (Astragalus tener var. tener), Ferris’s County (7,105 ha (17,557 ac)) Altamont Hills Unit are located over 60 milk-vetch, vernal pool small scale km (40 miles) from the closest known (Atriplex persistens), dwarf downingia, This unit is proposed as critical occurrence to north in Solano County Delta green ground beetle (Elaphrus habitat for vernal pool fairy shrimp and to the south in Stanislaus County, viridus), Bogg’s Lake hedge-hyssop, because it contains vernal pool habitats and over 60 km (40 mi) from the next Ricksecker’s water scavenger beetle identified by Holland (1998) and San occurrence to the west in San Joaquin (Hydrochara rickseckeri), California Joaquin County (1998) that support County. These populations may be linderiella, midvalley fairy shrimp, populations of vernal pool fairy shrimp genetically different from other vernal legenere, and California tiger (CNDDB 2001). This unit contains populations because of their relative salamander. vernal pool fairy shrimp occurrences isolation (Fugate 1998). found within Northern Volcanic The unit is comprised of three Unit 17, Napa River Unit, Napa and Mudflow vernal pools on the Laguna subunits in the general vicinity of Sonoma Counties (656 ha (1,621 ac)) geologic formation, as well as high Mount Diablo and Morgan Territory We propose this unit as critical terrace pools on the Valley Springs Regional Park. The unit primarily habitat for vernal pool fairy shrimp geologic formation. The Northern consists of private land, with 64 ha (157 because it contains vernal pools where Volcanic Mudflow vernal pools tend to ac) owned by the state and an additional vernal pool fairy shrimp are known to be short-lived, and are a relatively rare 288 ha (711 ac) administered by the occur (CNDDB 2001). The boundaries of habitat type for vernal pool fairy California Department of Fish and Game this unit were designed to include shrimp. This unit contains the largest for conservation purposes. vernal pool complexes mapped by vernal pool complex remaining in San This unit overlaps Unit 7 for Contra Holland (1998) and within the Fagan Joaquin County and the southern Costa goldfields. The unit lies north of Marsh Ecological Area owned by the Sacramento Valley, and contains the Corral Hollow Road, west of Clifton CDFG (420 ha (901 ac)) that contribute necessary geographic, topographic, and Court Forebay, east of the City of to the inundation patterns, water edaphic features to support vernal pool Danville, southeast of Concord, and quality, and soil moisture for vernal fairy shrimp occurrences found within south of Antioch. It includes vernal pool pool fairy shrimp hatching, growth and this unit. San Joaquin County has habitat within the Altamont Hills, reproduction, and dispersal, but not completed a HCP, which includes around the northern and eastern necessarily every year. The minimum measures to protect conversion of vernal boundaries of the City of Livermore, and mapping unit of Holland (1998) of 16 ha pool fairy shrimp habitat from vernal east of the Altamont Hills and west of (40 ac) and the resolution of the SPOT pools grasslands to vineyards. Clifton Court Forebay. The unit includes imagery did not allow us to identify all Conversion from grazing to other Fricke Lake which supports a large vernal pool habitat areas which provide agricultural practices have greatly population of California tiger the primary constituent elements for reduced the remaining acreage of vernal salamanders. vernal pool fairy shrimp in this area. pool habitats throughout this unit. Unit 20, Caswell Unit, Stanislaus The unit boundary was designated to This unit occupies the area from the County (302 ha (746 ac)) exclude tidal marsh habitats in the Calaveras River south to Duck Creek. south, and urban and agricultural areas This unit is proposed as critical The eastern boundary extends to near along the northern and eastern habitat for vernal pool fairy shrimp boundaries. The Napa River parallels Valley Springs at the intersection of because it contains vernal pools, swales, the western boundary of this unit. State routes 12 and 26. The western and other ephemeral wetlands and This unit represents the western boundary extends to near Tully Road depressions of appropriate sizes and extent of vernal pool fairy shrimp range. east of the City of Lodi. This unit also depths that typically become inundated Such isolated and peripheral coincides with Unit 14 for vernal pool for sufficient lengths of time necessary populations may be essential to the tadpole shrimp. Other sensitive vernal for vernal pool fairy shrimp incubation, conservation of this species because of pool species found within this unit reproduction, dispersal, feeding, and their genetic uniqueness (Fugate 1992, include western spadefoot toad and sheltering, but which are dry during the 1998, Lessica and Allendorf 1995). This California tiger salamander. All the land summer (Holland 1998, CNDDB 2001). unit represents the only area where within this unit is privately owned. This unit also supports aggregations or vernal pool fairy shrimp occur in vernal Unit 19A, B, and C, Altamont Hills Unit, systems of hydrologically pool habitats forming a transition zone Contra Costa and Alameda counties interconnected pools, swales, and other with tidal marshes. This unit is located (3,356 ha (8,292 ac)) ephemeral wetlands and depressions on private and CDFG land, including within a matrix of surrounding uplands the Napa-Sonoma Marsh and Fagan This unit is proposed as critical for that together form hydrologically and Marsh Wildlife Areas. Habitats within vernal pool fairy shrimp because it ecologically functional units called this unit are primarily threatened by contains vernal pool habitats mapped by vernal pool complexes (Holland 1998). urbanization from the City of Napa. Holland (1998) and East Bay Regional These features contribute to the filling Most of this unit is situated south and Parks District (2001) supporting vernal and drying of the vernal pool, and southwest of the City of Napa; primarily pool fairy shrimp occurrences identified maintain suitable periods of pool west of Highway 29, south of Highway by CNDDB (2001). Vernal pool fairy inundation, water quality, and soil 12, and east of Highway 121. This unit shrimp have been discovered in very moisture for vernal pool fairy shrimp forms a narrow strip following the small (less than 1 m (3.3 ft) in diameter) hatching, growth and reproduction, and northwestern banks of the Napa River clear water depression pools in dispersal, but not necessarily every year. and extending westward along sandstone outcrops in the area (Eriksen This unit includes vernal pool Hudeman and Schell sloughs. This unit and Belk 1999). The unit represents the complexes mapped by Holland (1998) is also identified as Unit 3 for Contra only known location that supports where vernal pool fairy shrimp have Costa goldfields. Other rare vernal pool vernal pool fairy shrimp within been documented by CNDDB (2001). species found in this unit include the sandstone outcrop pools (Eriksen and This unit is located within the San alkali milk-vetch. Belk 1999). Joaquin River National Wildlife Refuge

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and efforts to restore vernal pool likely continue to support natural vernal salamander, and Hartweg’s golden habitats are currently underway. pool ecosystem processes and maintain sunburst (Pseudobahia bahiifloia). Additional restoration designed to suitable habitat conditions for vernal Unit 22, Merced Unit, Merced and enhance habitat for riparian species, as pool fairy shrimp. This unit contains Mariposa Counties (44,106 ha (108,984 well as migratory birds and waterfowl, vernal pool fairy shrimp living within ac) is also being conducted. The San hardpan pools that occur on soils of Joaquin River National Wildlife Refuge alluvial fans and terraces forming We propose this unit as critical is the primary wintering site of 98 numerous small pools and swales on habitat for vernal pool fairy shrimp percent of the Aleutian Canada geese mima mound topography. Soils because it encompasses the largest block that winter in the Central Valley supporting these vernal pools are of pristine, high density vernal pool (October–April), and it is a major typically older than those of the alluvial grasslands supporting the species wintering and migration area for lesser terraces in the Sacramento area. These remaining in California (Holland 1998, and greater sandhill cranes, cackling pools provide the necessary timing and Vollmar 1999, CNDDB 2001). These Canada geese, and white-fronted geese. length of inundation for vernal pool habitats provide the primary constituent These migratory birds act as important fairy shrimp to complete their life cycle, elements essential for vernal pool fairy dispersal agents for vernal pool fairy reproduce, and disperse. shrimp. There are more documented shrimp. Lands within this unit form a The Stanislaus Unit is in the northern occurrences of vernal pool fairy shrimp mosaic of riparian habitat, wetlands, portion of the chain of vernal pools that in this unit than any other area throughout the species range (CNDDB and grasslands. runs through the southern Sierra 2001). Almost 15 percent of all This unit is over 75 km (47 mi) from Nevada foothills, within the Southern remaining vernal pool habitats in the the nearest unit to the north. Such Sierra Foothill vernal pool region Central Valley are located within this isolated populations may have genetic described by Keeler-Wolf et al. (1998). unit (Holland 1998). characteristics essential to overall long- This vernal pool region contains 35 term conservation of the species (i.e. The Merced Unit is located midway percent of all remaining vernal pool in a chain of vernal pool complexes that they may be genetically different than habitat in the Central Valley, and is more central populations) (Fugate 1992, straddles the valley floor and the extremely important to the conservation foothills of the southern Sierra Nevada. 1998). This unit may be threatened by of vernal pool fairy shrimp and other agricultural development, oil and This unit helps to maintain connectivity vernal pool species. Land ownership between vernal pool fairy shrimp natural gas exploration and within this unit includes the BLM (7 ha development, and conversion from habitats on the valley floor and habitats (17 ac)) and the California State Parks grazing to other agricultural practices. to the north and south of the Merced (25 ha (61 ac)). The well-known Water management practices may also Unit. Genetic analyses of vernal pool Hickman pools in Stanislaus County are threaten vernal pool fairy shrimp in this tadpole shrimp revealed that located within this unit. Not only does unit if natural vernal pool hydrology is occurrences in this unit were genetically the Hickman pool complex contain one altered. different from other sampled This unit is situated west of the City of the largest vernal lakes in California occurrences in California, and that this of Modesto and east and southeast of the at more than 121 ha (300 ac), but it also area had likely been isolated from other confluence of the San Joaquin and exhibits tremendous biodiversity, vernal pool habitats for a significant Stanislaus rivers. Caswell Memorial including one of the largest period of time (King 1996). Given that State Park lies just north of this unit and concentrations of imperiled amphibians vernal pool fairy shrimp and vernal pool is not included. The San Joaquin River (Medeiros 2000). However, the tadpole shrimp are dispersed in similar forms the western boundary of the unit. watershed containing the Hickman ways, it is reasonable to assume that The unit is bisected by the Hetch vernal pools has been breached by vernal pool fairy shrimp occurrences in Hetchy Aqueduct, State Highway 132, hundreds of acres of orchards that have this area are also isolated from other and the Tuolumne River. Roughly the been planted upstream. While most of occurrences throughout its range. northern one-third of this unit overlaps the watershed has been managed over This unit contains habitat for three with Unit 5 for Conservancy fairy the years in a trust of the Fred Robinson listed branchiopods, six listed plants, shrimp. It is also contains California family, the integrity of the vernal pool and a suite of sensitive species. Forty linderiella and California tiger ecosystem is threatened by agricultural percent of vernal pool habitats in the salamander occurrences, in addition to development and potential biocide Southern Sierra Foothill vernal pool a number of rare non-vernal pool pollution (Medeiros 2000). region are found within this unit. The species, including the federally listed The Stanislaus Unit is located in the integrity of the vernal pool complexes in endangered riparian wood rat and southeast corner of Stanislaus County eastern Merced is seriously threatened riparian brush rabbit. and the northeast corner of Merced by irrigated agriculture, upland housing County. It lies between the Tuolumne development, and the proposed UC Unit 21, Stanislaus Unit, Stanislaus and River and the Merced River. The Merced Campus and associated Merced Counties (25,317 ha (62,557 ac)) Mariposa County line is located east of development. Construction of facilities This area is proposed as critical the unit. Turlock Lake and Dawson Lake to educate and serve twenty-five habitat for vernal pool fairy shrimp are adjacent to the northern boundary. thousand UC students as well as faculty, because it contains occurrences of the County Road J9 and the High Line Canal staff, and their families within the species within large, relatively intact, are west of the unit. This unit coincides vernal pool complexes in eastern and contiguous vernal pool complexes with vernal pool tadpole shrimp Unit Merced County could have a major ranging from the floor of the valley to 16. It includes succulent owl’s-clover impact on vernal pool fairy shrimp the low elevation foothills (Holland Unit 3, hairy Orcutt grass Unit 5, Colusa occurrences. However, the recent draft 1998, CNDDB 2001). These areas are grass Unit 6, and Hoover’s spurge Unit biological opinion for the UC Merced essential to the conservation of vernal 5. Other sensitive vernal pool species campus and community developed pool fairy shrimp because they provide found within this unit include western environmental parameters which should relatively undisturbed, hydrologically spadefoot toad, dwarf downingia, reduce impacts to vernal pool habitats. intact vernal pool habitats that will California linderiella, California tiger Indirect and cumulative impacts of the

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proposed 1,673 ha (4,133 ac) campus vernal pool fairy shrimp and other salamander, western spadefoot toad, and associated community may be vernal pool crustacean cysts. This is the and California linderiella. minimized with the creation of a 2,036 only area where all four vernal pool Unit 24A and B, Madera Unit, Madera ha (5,030 ac) preserve intended to crustaceans addressed in this proposed and Fresno Counties (17,232 ha (42,579 protect sensitive vernal pool habitat, to rule are known to co-occur. ac)) be purchased with money donated by The Grasslands Unit includes the Packard Foundation. Kesterson, San Luis, and Merced The Madera Unit is proposed as A majority of vernal pool habitat in National Wildlife Refuges, as well as critical habitat for vernal pool fairy the Merced Unit is in Merced County. several Federal and State conservation shrimp because it contains occurrences The eastern edge of the unit overlaps easement areas, lands owned by the of the species living within hardpan into Mariposa County. Bear Creek flows California State Parks and Wildlife vernal pool complexes composed of along the southern boundary of the unit, Areas, and private lands. Land numerous small pools and swales on crossing through it in several locations. ownership within the unit includes the mima mound topography (Holland The City of Merced is south of the unit, Service (13,943 ha (34,452 ac)), CDFG 1998, Keeler-Wolf et al. 1998, CNDDB Bear Reservoir is southeast of the unit lands (1703 ha (4,257 ac)), California 2001). These vernal pools occur on and the Castle Airport is located outside State Parks (1,357 ha (3,392 ac)), CDFG alluvial fans and terraces and provide of the southwest boundary. The administered lands (1,052 ha (2,631 ac)) the necessary timing and duration of northern boundary parallels the Merced and WRP conservation easements (54 ha inundation essential to the conservation River. The entire unit is located east of (134 ac)). All other lands within this of vernal pool fairy shrimp. South of Highway 99. Land ownership within the unit are privately owned. Together, this unit in Fresno County these pools unit includes approximately 3 ha (8 ac) these areas are known as the Grasslands become less common as the soils that support them are less widespread of BLM, and 10 ha (26 ac) of California Ecological Area. This area supports (Keeler-Wolf et al. 1998). State Parks. TNC has a total of 4,513 ha diverse wetland habitats including Located in western Madera County, (11,283 ac) of conservation easements seasonally flooded marshlands, semi- within this unit. The Merced Unit this unit is located between the Fresno permanent marsh, riparian habitat, wet River and San Joaquin River. Land coincides with vernal pool tadpole meadows, vernal pools, native uplands, shrimp Unit 13, succulent owl’s-clover ownership within this unit includes 0.4 pastures, and native grasslands. ha (1 ac) of CDFG lands. All other land Unit 4, San Joaquin Valley Orcutt grass Wetlands within this area, including Unit 2, Colusa grass Unit 7, and within this unit is privately owned. All seasonal marsh and open water habitats, vernal pools in this unit are located east Conservancy fairy shrimp Unit 6. Other constitute 30 percent of the remaining sensitive vernal pool species found of Highway 99 and the Atchison, wetlands in California’s Central Valley Topeka, and Santa Fe Railroad, within this unit include the California and are extremely important to Pacific tiger salamander, shining navarretia extending east toward the low elevation Flyway waterfowl populations. Over 60 (Navarretia nigelliforms ssp radians), foothill region of the Sierra Nevada. million duck use-days and 3 million dwarf downingia, Bogg’s Lake hedge- State Route 145 bisects the unit. The goose use-days occur annually in this hyssop, western spadefoot toad, and Madera Unit encompasses San Joaquin unit. This habitat also supports a California linderiella. Valley Orcutt grass Unit 5a, hairy Orcutt diversity of other migratory birds, grass Unit 7, and succulent owl’s-clover Unit 23, Grassland Ecological Unit, including raptors, shorebirds, wading Unit 7a. Other sensitive vernal pool Merced County (55,910 ha (138,153 ac)) birds, and other wildlife species. species found within this unit include We propose this unit as critical based This unit contains over 50 percent of California linderiella, California tiger upon the presence of vernal pools and the remaining vernal pool habitats salamander, and western spadefoot vernal pool fairy shrimp. This unit within the San Joaquin Valley identified toad. supports numerous occurrences of by Holland (1998). This area is an This unit consists of two subunits. vernal pool fairy shrimp within a important portion of the geographic Subunit A contains vernal pool habitats diversity of vernal pools supported by a distribution of vernal pool fairy shrimp south of Millerton Lake. The western number of different soil types, including within the San Joaquin Valley. Threats boundary of this unit is bordered by the Delhi-Dello-Himar, Solano-Caypay- to vernal pool fairy shrimp within this San Joaquin River. Gordon Road cuts Willows, Rossi-Waukena, and Lewis- unit include conversion to agriculture, through the southernmost tip of the Landlow soils (CNDDB 2001, USDA changes in hydrology, invasion by unit. Owens Mountain and Table 2001). This diversity of soils creates a aggressive plants, and certain wetland Mountain Rancheria are located east of wide range of vernal pool shapes, sizes, management practices. the Unit. The Friant Kern Canal crosses and physical characteristics which The unit lies north of the City of Los through the unit in a southeasterly provide the essential timing, frequency, Banos, southwest of the City of Merced, direction. Subunit B is located mostly and length of inundation necessary for and is bisected by the San Joaquin west of State Route 41 along Little Dry the conservation of the species. This River. This unit also represents Unit 24 Creek and Cottonwood Creek. unit contains numerous large, intact for tadpole shrimp. The western half of vernal pool grasslands, and is one of this unit also represents Unit 2 for Unit 25, Kennedy Table Unit, Madera only two areas on the floor of the longhorn fairy shrimp and the eastern County (994 ha (2,456 ac)) Central Valley that provide expansive half represents Unit 8 for Colusa grass, We propose this unit as critical areas of vernal pool complexes within Unit 8 for Hoover’s spurge, and Unit 7 habitat because it contains vernal pools which vernal pool fairy shrimp can for Conservancy fairy shrimp. In and vernal pool fairy shrimp (Holland hatch, mature, and reproduce. These addition to the species mentioned 1998, CNDDB 2001). Vernal pool fairy areas will likely continue to support above, other sensitive vernal pool shrimp within this unit live within rare natural vernal pool ecosystem processes species occur within the unit including Northern Basalt Flow vernal pool and maintain suitable habitat conditions Hispid’s bird beak, Sanford’s complexes that provide the necessary for vernal pool fairy shrimp. This unit arrowhead, heartscale, brittlescale, topographic and edaphic conditions also provides habitat for migratory vernal pool smallscale, delta button essential to the conservation of the waterfowl that aid in the dispersal of celery, alkali milk-vetch, California tiger species. Northern Basalt Flow vernal

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pools within this unit are perched on includes 348 ha (861 ac) of CDFG lands. This unit contains wintering areas for narrow, sinuous basalt mesas above the All other land within this unit is migratory waterfowl, shorebirds, marsh, surrounding low-lying terrain, and privately owned. TNC, Tulare County, and waterbirds in the southern San typically contain small, irregularly and the Sierra Los Tulares Land Trust Joaquin Valley, and include natural clustered pools with ‘‘flashy hydrology’’ have identified this area as one of the valley grasslands and developed marsh (pools fill and dry quickly) (Keeler-Wolf best remaining examples of vernal pool habitats within the Pixley National et al. 1998). These pool types provide habitats in the region. Much of the Wildlife Refuge complex (2,742 ha (6, the necessary timing and length of vernal pool habitat within Tulare 776 ac)). Other ownership within this inundation for vernal pool fairy shrimp County has been severely degraded and unit include CDFG (490 ha (1,210 ac)) to hatch, mature, and reproduce, but do converted. The conversion of habitat and TNC lands (1,309 ha (3,274 ac)). All not stay inundated long enough to allow adjacent to this unit to urbanized areas, other lands within this unit are the invasion of aquatic species (CNDDB orchards, and other forms of irrigated privately owned. These habitats are 2001). The Kennedy Table Unit is over agriculture continues to threaten the important for migratory waterfowl that 50 km (31 mi) from the next closest unit long-term viability of the vernal pools aid in the dispersal of vernal pool fairy to the south and over 65 km (40 mi) within this unit. shrimp and other vernal pool crustacean from the nearest unit to the north. Such This unit is comprised of three cysts. This unit represents one of only peripheral populations may have subunits. Subunit A is located in three areas designated for vernal pool genetic characteristics essential to northwest Tulare County and contains fairy shrimp in the San Joaquin Valley overall long-term conservation of the vernal pool habitat located west of vernal pool region described by Keeler- species (i.e., they may be genetically Seville. The Friant Kern Canal is north Wolf et al. (1998). The refuge also different than more central populations) of the unit and the Cottonwood Creek provides habitat for the endangered San (Fugate 1998). Levee is south of the unit. Road 140 Joaquin kit fox and the blunt-nosed This unit is located north and west of runs west of the unit. Subunit B leopard lizard. Vernal pool fairy shrimp the Fresno County line on Kennedy contains vernal pools in northeastern within this unit are threatened by Table in Madera County. It is northeast Kings County and northwestern Tulare agricultural development, oil and of Millerton Lake, and the San Joaquin County. Highway 99 and St. Johns River natural gas exploration and River flows east and south of it. Land cut through the unit in a southeasterly development, subdivision of ranches ownership within this unit includes 65 direction. Cross Creek and Cottonwood and land grants, urban expansion, and ha (161 ac) of BLM lands. All other land Creek cut through the unit in a conversion from grazing to other within this unit is privately owned. This southwesterly direction. Road 112 is agricultural practices. unit coincides with vernal pool tadpole east of the unit and the Lakeland Canal This unit consists of two subunits that shrimp Unit 19, succulent owl’s-clover is west of the unit. The towns of Goshen lie south of the Cities of Hanford and Unit 8A and B, San Joaquin Valley and Visalia are south of the unit and Lemoore, north of the City of Wasco, Orcutt grass units 5B and 6A, and hairy Traver and London are north of the unit. and east of the City of the Tulare. In Orcutt grass Unit 10. In addition to Subunit C is known as Sequoia Field addition to vernal pool fairy shrimp, these federally listed species other Unit and is located in northwestern western spadefoot toad and California sensitive vernal pool species found Tulare County. This unit is south of tiger salamander are present within this within this unit include California County Road J36. Road 112 crosses unit. linderiella, California tiger salamander, through the western edge of the unit, Unit 28, San Benito County Unit, San and the western spadefoot toad. In Avenue 352 crosses through the Benito and Monterey Counties (48,125 addition to these, the federally southern edge, and State Route 63 ha (118,915 ac)) endangered Hartwig’s golden sunburst crosses through the eastern edge. The also occurs within this unit. Cross Creek Unit coincides with vernal The San Benito County unit is located pool tadpole shrimp Unit 20 and in the southwestern portion of San Unit 26A, B, and C, Cross Creek Unit, contains portions of San Joaquin Valley Benito County and the eastern-most Tulare and Kings Counties (3,193 ha Orcutt grass Unit 8 and Hoover’s spurge portion of Monterey County. This unit (7,891 ac)) Unit 9. Other sensitive vernal pool consists of a distinct collection of This unit is proposed as critical for species found within this unit include seasonally flooded wetlands west of the vernal pool fairy shrimp because it the California tiger salamander, spiny- Great Central Valley, and overlaps a contains vernal pools that support sepaled button-celery, and western portion of the Central Coast vernal pool occurrences of the species (Holland spadefoot toad. region that has been delineated by the 1998, CNDDB 2001). Vernal pool fairy CDFG (Keeler-Wolf et al. 1998). The shrimp in this area occur in vernal pools Unit 27A and B, Pixley Unit, Tulare proposed critical habitat unit contains a formed on Lewis and Youd soils (USDA County (7,842 ha) 19,377 ac)) minimum of 13 vernal pool complexes 2001). This area represents the southern This unit is proposed for vernal pool that are 7 to 144 ha (17 to 356 ac) in extent of vernal pool fairy shrimp range fairy shrimp because it contains the size, and also includes a number of along the eastern margin of the Central largest contiguous area of habitat for the unmapped vernal pools or pool Valley, and is the largest contiguous species in the southern portion of the complexes that are less than 4 ha (10 ac) vernal pool habitat in this region San Joaquin Valley, and supports vernal in size. Focused surveys for vernal pool (Holland 1998, CNDDB 2001). pools that provide the necessary timing fairy shrimp have not been conducted This unit contains the CDFG’s and length of inundation essential to the within the proposed critical habitat Sequoia Field and Stone Corral conservation of vernal pool fairy shrimp unit, and it is therefore likely that this Ecological Reserves in Tulare County. (Holland 1998, CNDDB 2001). Vernal species is present in many, if not most, These reserves are one of the few vernal pool fairy shrimp in this area occur of the vernal pool complexes that have pool conservation areas in the eastern within Northern Claypan vernal pools not been censussed due to habitat portion of the San Joaquin Valley, and that tend to be alkaline and larger than similarity to where the occurrences have they have been the focus of several other vernal pool fairy shrimp habitats, been documented. This conclusion is monitoring and management efforts. such as those found on the eastern supported by the fact that two-thirds of Land ownership within this unit margin of the San Joaquin Valley. vernal pool fairy shrimp occurrences

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that have been documented within the subunit have been conducted by Allendorf 1995, Fugate 1998). The critical habitat unit were not located California Department of Transportation Carrizo Plain Unit is the only area within large vernal pool complexes, but staff along State Highway 46. These where vernal pool fairy shrimp are were instead found in smaller, surveys have documented the known from saline salt brush scrub unmapped vernal pools. Land occurrence of vernal pool fairy shrimp vernal pool habitats. ownership within this unit includes within the subunit (Mitch Dallas, The Carrizo Plain contains examples BLM (1,581 ha (3,906 ac)) and State California Department of of native bunch grass, needle grass, and Land Commission (2 ha (5 ac)). All other Transportation, pers. comm.). The Paso blue grass grasslands, as well as lands within this unit are privately Robles subunit possesses several large populations of federally listed San owned. The critical habitat unit vernal pool complexes that are 42,314 Joaquin kit fox, blunt nosed leopard perimeter is defined by the presence of ha (105,776 ac) in size. The discovery of lizard, giant kangaroo rat, California low slope areas within watershed vernal pool fairy shrimp in the area 6 jewel flower, Lost Hills salt brush, Kern boundaries that are known to contain km (4 mi) east of the city suggests that mallow and San Joaquin wooly threads. vernal pool fairy shrimp occurrences the species is likely to be widely Most of the habitat within this unit is and vernal pool habitats. Conservation dispersed in remnant vernal pools or part of the Carrizo Plain National of vernal pools in the San Benito County complexes that still exist within the Monument, which is administered by unit is necessary to maintain and restore critical habitat subunit. The Fort Hunter the BLM, TNC, and the CDFG. The BLM occurrences of vernal pool fairy shrimp Liggett subunit occurs within the lands within the unit total that are disjunct from other listed fairy Central Coast vernal pool region that has approximately 6,220 ha (15,549 ac) and shrimp localities in the Great Central been delineated by the CDFG (Keeler- the CDFG lands total approximately 93 Valley. Wolf et al. 1998), and the Camp Roberts ha (233 ac). Other vernal pool habitats and Paso Robles subunits occur within in the unit are located on private land. Unit 29A, B, and C, Central Coastal the Carrizo vernal pool region. The This unit includes vernal pool habitat Ranges Unit, Monterey and San Luis subunit perimeters are defined by the in the interior basin of the Carrizo Plain. Obispo Counties (41,054 ha (101,444 presence of low slope areas within It encompasses California Valley and ac)) watershed boundaries that are known to Soda Lake. State Highway 58 is located The Central Coastal Ranges Unit contain vernal pool fairy shrimp and north of the unit. Most of the habitat is includes three subunits that occur in vernal pool habitats. Conservation of east of Soda Lake Road, however, Soda Monterey and San Luis Obispo counties. vernal pools in the region is necessary Lake Road crosses through the western The three subunits include areas at or to stabilize and recover remnant edge of the unit in several areas. To the adjacent to Fort Hunter Liggett, Camp populations of vernal pool fairy shrimp east, the unit is bordered by the San Roberts, and the city of Paso Robles. The in the central coastal county area of Andreas Rift Zone. This unit coincides vast majority of the Fort Hunter Liggett southern California. with longhorn fairy shrimp Unit 3. subunit overlaps the military reservation, and also includes a small Unit 30, Carrizo Plain Unit, San Luis Unit 31, Lake Cachuma Area, Santa portion of privately owned land east of Obispo County (10,466 ha (25,862 ac)) Barbara County (8,399 ha (20,754 ac)) the military base. Land ownership This unit is proposed as critical for The Lake Cachuma critical habitat within this unit includes DOD (20,585 vernal pool fairy shrimp because it unit is located within a 16 km (10 mi) ha (50,866 ac)) and BLM (1 ha (2 ac)). contains vernal pool habitats identified radius of the northwestern portion of All other lands within this unit are by Holland (2002) and that support Lake Cachuma in central Santa Barbara privately owned. Intensive surveys on occurrences of vernal pool fairy shrimp County. The unit boundary has been Fort Hunter Liggett have documented (CNDDB 2001). Vernal pool fairy shrimp delineated to include hydrologic units the occurrence of listed fairy shrimp in found in the Carrizo Plain live within that contain vernal pool fairy shrimp a minimum of 65 different pools within Northern Claypan vernal pools (Sawyer and vernal pool habitats. Vernal pool the base boundary (Fort Hunter Liggitt and Keeler-Wolf 1995) which occur in complexes within the unit vary in size 2000). Several additional pools in numerous shallow alkaline depressions from 16 to 81 ha (40 to 199 ac). Surveys restricted access areas on the base have within a Valley Saltbush Scrub matrix. for fairy shrimp species have rarely been not been surveyed, and some of these These pools provide all of the primary conducted within the unit. A portion of are also likely to possess listed fairy constituent elements essential for the the unit overlaps the Santa Barbara shrimp. The majority of the Camp conservation of vernal pool fairy vernal pool region that has been Roberts subunit includes land within shrimp, as well as the edaphic and delineated by the CDFG (Keeler-Wolf et that military base boundary, and geologic features necessary to maintain al. 1998). The Lake Cachuma unit is includes a limited amount of privately the hydrology of the vernal pool essential for the conservation of vernal owned land north and southeast of the complexes. pool fairy shrimp because it contains military base. Surveys on Camp Roberts Many vernal pools in the region are seasonally flooded aquatic have documented the presence of vernal adjacent to the 1,214 ha (3,000 ac) Soda environments that contain markedly pool fairy shrimp at 61 sites (Jones and Lake, the largest alkali wetland in disjunct species occurrences. Stokes 1997a). One hundred and central and southern California, which Landownership within this unit nineteen additional sites were also provides a winter haven for thousands includes U.S. Forest Service (USFS) found to possess unidentified juvenile of migratory birds. Vernal pool fairy (2,199 ha (5,434 ac)) and BLM (37 ha (92 fairy shrimp, and the inability to shrimp in the Carrizo Plain Unit are ac)). Other land within this unit is document the presence of other fairy located 235 km (146 mi) southeast of the privately owned. shrimp taxa on the base suggests that closest known occurrences at Kesterson these pools are therefore likely to National Wildlife Refuge in Merced Unit 32, Ventura County Unit, Ventura contain listed species. The Paso Robles County. Such isolated and peripheral County (18,831 ha (46,531 ac)) subunit consists of a polygon that is 3.2 populations may have genetic The Ventura County unit is located in to 24 km (2 to 15 mi) northeast of the characteristics that are different than the north-central portion of Ventura city boundary. A limited number of more central populations, and may be County. All the lands within this unit surveys for fairy shrimp within the important for conservation (Lesica and are owned by the USFS. Vernal pool

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fairy shrimp and Conservancy fairy listed fairy shrimp were detected. because of appropriate hydrology, soils shrimp are known to co-occur at However, not all vernal pool basins and alkali vernal pool habitat. The alkali relatively high elevation (~1700 m filled in the spring of 2000, and of those soils and their associated hydrology in (5500 ft)) forested sites within the Los that did, not all retained water the unit are essential to the conservation Padres National Forest. Almost all of the throughout the sample period. of vernal pool fairy shrimp in southern known localities that possess these two Additionally, no survey for fairy shrimp California (Service 1998). species within the state of California cysts (dry season survey) has been Unit 34, Santa Rosa Plateau Unit, exist at much lower elevations in conducted. Therefore, the survey effort Riverside County (1,718 ha (4,246 ac)) grassland habitats. The critical habitat is inconclusive for the presence of listed perimeter consists of an area that is fairy shrimp species. However, the The Santa Rosa Plateau critical habitat known to contain vernal pool and common versatile fairy shrimp unit is on a large mesa made of basaltic Conservancy fairy shrimp occurrences (Branchinecta lindahli) was detected in and granitic substrates within the Santa and isolated pools that provide habitat these pools (Bomkamp 2000). Further, Rosa Plateau Ecological Reserve. The for the two species. Fairy shrimp the threatened spreading navarretia unit contains one of the largest surveys have rarely been conducted in (Navarretia fossalis), the threatened remaining vernal pool complexes in the proposed critical habitat unit. The thread-leaved brodiaea (Brodiaea southern Riverside County and includes Ventura County unit is essential for the filifolia), and the endangered San a series of large and small pools in conservation of vernal pool fairy shrimp Jacinto Valley crownscale (Atriplex which several sensitive or federally because it contains ephemeral aquatic coronatum var. notatior) have also been listed fairy shrimp have been environments that are rarely associated documented within this subunit. These documented. These include the vernal with fairy shrimp, and the occupied species are all associated with vernal pool fairy shrimp (Angelos 1998), the sites represent markedly disjunct pool and alkali playa habitats. endangered Riverside fairy shrimp occurrences for the species. Even though the presence of vernal (Streptocephalus woottoni) (Service pool fairy shrimp in the San Jacinto 2001), and the Santa Rosa fairy shrimp Unit 33A, B, and C San Jacinto-Hemet River floodplain has not been (Linderiella santarosae) (Angelos 1998). Unit, Riverside County (2,319 ha (5,730 established, the vernal pool alkali playa Additionally, the federally endangered ac)). habitat of subunit 33A is considered to California Orcutt grass is documented This unit lies in the southern portion be essential for the conservation of from the pool complex (Service 1998). of the San Jacinto Valley and contains vernal pool fairy shrimp in southern This unit was designated as critical two primary subunits (San Jacinto and California. As previously indicated, habitat for the Riverside fairy shrimp on Hemet), the latter of which is itself these pools contain the largest May 30, 2001 (66 FR 29384). This vernal divided into two smaller subunits (33B remaining contiguous alkali playa/ pool complex represents the and 33C). Unit 33 consists of the vernal pool habitat within the historic southwestern limit of occupied vernal remnant alkali playa associated with the range of vernal pool fairy shrimp in pool fairy shrimp habitat. It is also a San Jacinto River (subunit A) and the southern California, as well as unique habitat for vernal pool fairy upper Salt Creek drainage (subunits B appropriate water circulation patterns, shrimp, therefore, the fairy shrimp in and C). Large portions of the alkali alkali soils, and relatively close these pools may have genetic willow soils associated with these proximity to the occupied Hemet characteristics important to the overall watercourses have been historically primary subunit. long-term conservation of the species altered by drainage projects and The Hemet primary subunit (subunits (i.e., they may be genetically different agriculture resulting in the degradation 33B and 33C) include the west Hemet from more centrally located or destruction of vernal pool habitat. vernal pool complex along Florida populations) (Lesica and Allendorf The unit consists of areas where vernal Avenue (subunit 33B), as well as a small 1995). Conservation of this vernal pool pool fairy shrimp remain extant and/or area east of Warren Road and north of basin and its associated watershed is where essential hydrology and alkali Tres Cerritos (subunit 33C). Vernal pool essential to the conservation of the soils are intact supporting vernal pool fairy shrimp have been documented in vernal pool fairy shrimp, and the and alkali playa habitat. All the lands the southwestern portion of the vernal Riverside fairy shrimp in southern within this unit are privately owned. pool complex. The remainder of this California, as indicated in the Vernal The San Jacinto primary subunit proposed subunit contains lands within Pools of Southern California Recovery (subunit 33A) consists of lands along the watershed of the occupied pool Plan (Service 1998). Property ownership the San Jacinto River floodplain from complex and other vernal pools in the and protection within this unit includes the Ramona Expressway westward past basin. Lands within the watershed have CDFG (761 ha (1,880 ac)), TNC (77 ha Interstate 215 to the upper reaches of been included to maintain the integrity (1,902 ac)), and TNC conservation the northern portion of Railroad Canyon of the surface flow and water quality to easements (150 ha (375 ac)). Reservoir. The lands delimited by this the pool complexes and playa overall. subunit represent the largest remaining In addition to vernal pool fairy Unit 35, Skunk Hollow Unit, Riverside contiguous alkali playa/vernal pool shrimp, several federally listed plants County (97 ha (239 ac)) habitat within the historic range of including the threatened spreading The Skunk Hollow vernal pool vernal pool fairy shrimp in southern navarretia, the threatened thread-leaved complex consist of a single, large California. The subunit contains brodiaea, the endangered California (approximately 14 ha (35 ac)) vernal multiple extant vernal pools and Orcutt grass (Orcuttia californica), and pool and its essential associated complexes scattered along the river the endangered San Jacinto Valley watershed in western Riverside County. floodplain with intact water circulation crownscale have also been documented All the lands within this unit are processes and alkaline soil substrates within this subunit. These species are privately owned. Several federally listed preferred by vernal pool fairy shrimp. all associated with vernal pool and species have been documented from the A presence/absence survey for alkali playa habitats. Skunk Hollow vernal pool basin. These federally listed fairy shrimp was Unit 33 includes areas where vernal include the threatened vernal pool fairy conducted in a portion of the pools in pool fairy shrimp are extant and shrimp (Simovich in Litt 2001), the this subunit in the spring of 2000. No recovery value for this species is high endangered Riverside fairy shrimp

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(Service 2001), the threatened spreading this species are threatened by Unit 1, Stillwater Plains Unit, Shasta navarretia, and the endangered development and agricultural County (1,849 ha (4,569 ac)) California Orcutt grass (Service 1998). conversion. Other vernal pool tadpole This unit is proposed as critical The vernal pool complex and watershed shrimp occurrences are threatened by habitat for vernal pool tadpole shrimp is currently protected as part of a off road vehicle use, road construction because it contains the species (CNDDB reserve established within an approved and maintenance, mining, and landfill 2002) within vernal pools mapped by mitigation bank in the Rancho Bella construction (CNDDB 2001). Several Holland (1998) which are found on old Vista Habitat Conservation Plan (HCP) occurrences are threatened by alluvial terraces above the Sacramento area and as part of the conservation intentional discing and draining of their River, often on Redding and Corning measures contained in the Assessment habitats (CNDDB 2001). Vernal pool soil complexes (Shasta County 2001). District 161 Subregional HCP. While tadpole shrimp occurrences have been Generally these pools range in size, from neither HCP include the vernal pool extirpated as a result of urban small (10 m2) (30 sq ft.) to several ha (ac) fairy shrimp as a covered species, both development, primarily in Sacramento in size at the Stillwater Plains area. HCPs provide protection for the vernal and Tehama counties. These vernal pools provide feeding and pool complex and its associated sheltering habitat for the species and watershed in perpetuity. Further, the Numerous occurrences of vernal pool remain inundated for sufficient lengths HCPs address the endangered Riverside tadpole shrimp are threatened by altered of time to allow vernal pool fairy shrimp fairy shrimp as a covered species. hydrology. In some cases vernal pool to hatch, mature, and reproduce. Because we believed that the tadpole shrimp habitat has been altered This unit represents critical habitat management and protections afforded so that it contains water year round, for vernal pool fairy shrimp because it the vernal pool complex and the allowing predators such as bullfrogs and contains all of the primary constituent Riverside fairy shrimp were adequate fish to colonize the areas (CNDDB 2001). elements for the species, and supports for the long-term conservation of this In other cases artificial run off has systems of hydrologically complex and this species, and it is in resulted in the delivery of materials that interconnected pools and swales within the long-term survival interest of the destroy vernal pool water quality, a matrix of surrounding uplands that species to preserve the partnerships that including pesticides from vineyards and we had developed with the local together form hydrologically and other irrigated agricultural lands, ecologically functional units called jurisdiction and project proponents in pesticides from golf courses, and the development of the HCPs, we vernal pool complexes. These features sediment from surrounding contribute to the filling and drying of excluded the Skunk Hollow vernal pool developments (CNDDB 2001). Several complex from critical habitat for the the vernal pool, and maintain suitable vernal pool tadpole shrimp occurrences Riverside fairy shrimp. We do not periods of pool inundation, water are threatened by wetland management believe that this exclusion from critical quality, and soil moisture for vernal activities that are designed to transform habitat would result in the extinction of pool crustaceans to complete their life this Riverside fairy shrimp. their vernal pool habitats into cycles. Even though the two HCPs do not permanent marshes for the benefit of The vernal pool tadpole shrimp have the vernal pool fairy shrimp listed other species (CNDDB 2001). Several within this unit were found to be as a covered species, we believe that the other occurrences are threatened by the genetically different from other protections and management afforded construction of drainage ditches, which populations, particularly those in the the Skunk Hollow vernal pool complex artificially drain vernal pool tadpole foothills of the Sierra Nevada (King and the other listed vernal pool species shrimp habitats (CNDDB 2001). 1996). This unit also comprises the through the terms and conditions of northern extent of the species range in Vernal Pool Tadpole Shrimp Unit those HCPs are adequate to ensure the California, and such isolated Review long-term conservation of the vernal populations may be essential to the overall long-term conservation of the pool fairy shrimp as well. Therefore We conducted a regional review species (Fugate 1992, 1998, Lesica and similar to the Riverside fairy shrimp, we across the current range of vernal pool Allendorf 1995). The boundaries of the believe that the benefits of the exclusion tadpole shrimp to evaluate and select unit were delineated to include the of the Skunk Hollow vernal pool areas that are essential to the interconnected pools, swales, and complex from critical habitat for the conservation of the species and that may vernal pool fairy shrimp outweighs the associated uplands mapped by Holland require special management actions. (1998) that contribute to the filling and benefit of its inclusion. Additionally, we Important factors we considered were do not believe that this exclusion would drying of the vernal pools where vernal the presence of vernal pool tadpole pool fairy shrimp occur, and which result in the extinction of the vernal shrimp and the presence of the primary pool fairy shrimp. maintain suitable periods of pool constituent elements essential to the inundation, water quality, and soil Vernal Pool Tadpole Shrimp Criteria conservation of the species. We moisture for vernal pool tadpole shrimp In proposing critical habitat units for identified areas that support vernal pool hatching, growth, reproduction, and vernal pool tadpole shrimp we tadpole shrimp occurrences identified dispersal. evaluated the life history and current by CNDDB (2002) within large vernal This unit includes the Stillwater distribution of the species, the primary pool complexes mapped by Holland Plains Conservation Bank. The constituent elements, and the threats to (1998) and other local sources Stillwater Plains Conservation Bank was the species. This information allowed us throughout the range of the species. We established specifically for the to determine which areas are likely to have identified the areas necessary to conservation of vernal pool tadpole contribute to the conservation of vernal maintain vernal pool tadpole shrimp shrimp, and has been used as mitigation pool tadpole shrimp and to delineate range and distribution and to include for the destruction of other vernal pool units so that threats to this species some of the different kinds of habitats tadpole shrimp habitats throughout the might be minimized. in which the species is known to occur. northeastern Sacramento Valley area. CNDDB (2001) estimates that 32 A specific description of each area is Most of the land included within this percent of the remaining occurrences of outlined below. unit is privately owned, but 52 ha (130

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ac) of that is protected by WRP Land ownership within this unit hilltops that comprise some of the easements or agreements. The BLM includes BLM (6,226 (15,383 ac)), CDFG oldest geologic formations in California. owns 17 ha (42 ac). Urban expansion (392 ha (981 ac)), State Land This unit also provides habitat for from the Redding Area, and conversion Commission (40 ha (100 ac)). The CDFG migratory waterfowl that aid in the from grazing to other agricultural administers approximately 17 ha (42 ac) dispersal of vernal pool tadpole shrimp practices continue to threaten vernal and the TNC has conservation and other vernal pool crustacean cysts. pool tadpole shrimp occurrences easements on 6,230 (15,575 ac) within This unit contains the vernal pool throughout this unit. this unit. The remaining lands included grassland area known as Vina Plains, This unit is located in the area east of within this unit are privately owned. which is managed by TNC. The Vina the Redding Municipal Airport between The CDFG has protected some vernal Plains area has been the focus of a Airport Road to the west and Deschutes pool areas at Dales Lake Ecological number of research projects, including Road to the east. The unit extends to Reserve. The importance of these vernal long-term adaptive management and Dersch Road in the south and towards pool habitats has been recognized by a monitoring efforts evaluating the effects Lassen Park Highway in the north. This number of state, local, and Federal of grazing and fire on vernal pool plants, unit comprises a portion of the agencies, and they have been the focus animals, and ecosystems (Griggs 2000). Stillwater Plains. This unit overlaps of several conservation planning efforts. Much of the basic life history slender Orcutt grass Unit 2B and vernal Portions of the CDFG Battle Creek information known about vernal pool pool fairy shrimp unit 5. Other sensitive Wildlife Area are found within this unit crustaceans was collected at Vina Plains species occurring within this unit but the amount of vernal pool habitat (e.g., Lanway 1974, Ahl 1991, Syrdahl include Red Bluff dwarf rush (Juncus currently protected within the unit is 1993, Gallagher 1996). leiospermus var. leiospermus), very small. Vernal pool habitats within The majority of the lands included California linderiella (Linderiella this unit are fragmented and threatened within this unit are privately owned. occidentalis), Henderson’s bent grass by urban expansion, subdivision of This unit contains TNC’s Vina Plains (Agrostis hendersonii), and four angled ranches and land grants, and conversion preserve as well as other TNC lands spike rush (Eleocharis quadrangulata). from grazing to other agricultural 2,264 ha (5,660 ac) and conservation easements 4,348 ha (10,870 ac). The unit Unit 2, Dales Unit, Shasta and Tehama practices. This unit is located from Battle Creek also includes 57 ha (142 ac) of private Counties (20,446 ha (50,522 ac)) on the Shasta/Tehama County line lands protected by WRP easements or This unit is proposed as critical south of Balls Ferry to Paynes Creek agreements. This unit is located in the habitat for vernal pool tadpole shrimp near Dales. The vernal pool habitats northeastern portion of the Sacramento because it contains the species and west of Inskip Hill are included in this Valley from Deer Creek in Tehama vernal pools, swales, and other unit, as well as the area west of the County to Big Chico Creek north of ephemeral wetlands and depressions of Sacramento River known as Table Chico in Butte County. This unit is one appropriate sizes and depths necessary Mountain and Table Mountain Lake. of only two vernal pool tadpole shrimp for vernal pool tadpole to complete their This unit coincides with Unit 3 for units within the Northeastern life cycle (Holland 1998, CNDDB 2001). slender Orcutt grass. Other vernal pool Sacramento Valley vernal pool region This unit is one of the few areas where species occurring within this unit identified by CDFG (Keeler Wolf et al. vernal pool tadpole shrimp are known include Bogg’s Lake hedge-hyssop, Red 1998). The unit extends south and east to occur in Northern Mudflow vernal Bluff dwarf rush, legenere, California of the Sacramento River paralleling the pools. Northern Mudflow vernal pools linderiella, Ahart’s paronychia, low elevation foothill region of the are generally small and tend to be Henderson’s bent grass, and Sanford’s Sierra Nevada. This unit coincides with inundated for relatively short periods of arrowhead. Unit 7 for vernal pool fairy shrimp, and time (Keeler-Wolf et al. 1998). incorporates Unit 1 for Conservancy The boundaries of the unit were Unit 3, Vina Plains Unit, Tehama and fairy shrimp, Units 4 for slender Orcutt delineated to include the interconnected Butte Counties (23,883 ha (59,015 ac)) grass, Unit 2 for Greene’s tuctoria, Unit pools, swales, and associated uplands This unit is proposed as critical 1 for hairy Orcutt grass, Unit 1 for mapped by Holland (1998) that habitat because it contains occurrences Hoover’s spurge, and Units 1 and 2 for contribute to the filling and drying of of vernal pool tadpole shrimp (CNDDB Butte County meadowfoam. Other the vernal pools where vernal pool fairy 2001) living within large vernal pool vernal pool species occurring within shrimp occur, and which maintain grassland areas that support this unit include Bogg’s Lake hedge- suitable periods of pool inundation, aggregations or systems of hyssop, Red Bluff dwarf rush, Douglas’ water quality, and soil moisture for hydrologically interconnected pools, pogogyne, western spadefoot toad, vernal pool tadpole shrimp hatching, swales, and other ephemeral wetlands legenere, California linderiella, growth, reproduction, and dispersal. and within a matrix of surrounding California tiger salamander, Ahart’s This unit contains some of the largest uplands that together form paronychia, Henderson’s bent grass, remaining vernal pool complexes hydrologically and ecologically Sanford’s arrowhead , and dwarf supporting vernal pool tadpole shrimp functional units (EPA 1994, Holland downingia. in the northern portion of the species 1998, Tehama County 1999). These range, including the Dales Plains. These features contribute to the filling and Unit 4, Oroville Unit, Butte and Yuba areas provide relatively undisturbed, drying of the vernal pool, and maintain Counties (15,975 ha (39,474 ac)) hydrologically intact vernal pool suitable periods of pool inundation, This unit is proposed as critical habitats that will likely continue to water quality, and soil moisture for habitat for vernal pool tadpole shrimp support natural vernal pool ecosystem vernal pool tadpole shrimp hatching, because it contains occurrences of the processes and maintain suitable habitat growth and reproduction, and dispersal. species and vernal pools, swales, and conditions for vernal pool tadpole This unit is one of the few areas where other ephemeral wetlands and shrimp. This unit also provides habitat vernal pool tadpole shrimp are known depressions of appropriate sizes and for migratory waterfowl that aid in the to occur in Northern Basalt Flow vernal depths necessary for vernal pool tadpole dispersal of vernal pool tadpole shrimp pools. Northern Basalt Flow vernal shrimp to complete their life cycle and other vernal pool crustacean cysts. pools are limited to ancient terraces and (Holland 1998, CNDDB 2001, Silveira

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2000). This unit contains some of the California tiger salamander, Ahart’s Joaquin spearscale, Ferris’ milk-vetch, few areas where vernal pool tadpole paronychia, Henderson’s bent grass, spike-primrose, sessile mousetail, and shrimp are found in Northern Volcanic Sanford’s arrowhead, and dwarf palmate-bracted bird’s beak. Mudflow vernal pools, including vernal downingia. Unit 6, Dolan Unit, Glenn and Colusa pools found on the Tuscan and Lovejoy Unit 5, Sacramento National Wildlife Counties (526 ha (1,299 ac)) Basalt geologic formations. Vernal pool Refuge Unit, Glenn and Colusa Counties tadpole shrimp also occur within This unit is proposed as critical for (5,718 ha (14,129 ac)) Northern Hardpan vernal pools in this vernal pool tadpole shrimp because it unit, including pools formed on the This unit is proposed as critical for contains the primary constituent Riverbank and Modesto geologic vernal pool tadpole shrimp because it elements necessary for the conservation formations. King (1996) found that contains the primary constituent of the species and supports occurrences vernal pool tadpole shrimp at this site elements necessary for the conservation of the species (Holland 1998, Silveira were genetically distinct from vernal of the species, and supports occurrences 2000, CNDDB 2001). Vernal pool pool tadpole shrimp at other locations. of the species (Holland 1998, Silveira tadpole shrimp within this unit live The majority of the lands included 2000, CNDDB 2001). Vernal pool within Northern Claypan vernal pools, within this unit are privately owned. tadpole shrimp within this unit live as defined by Sawyer and Keeler-Wolf Ownership and protected lands within within Northern Claypan and Northern (1995). These vernal pools occur on the unit includes BLM (48 ha (119 ac)), Hardpan vernal pools, as defined by alkaline soils and typically form alkali USFS (78 ha (194 ac)), WRP easements Sawyer and Keeler-Wolf (1995). The playas which are larger and contain a (14 ha (35 ac)), and CDFG administered edaphic features that support the more diverse species composition than lands (69 ha (173 ac)). The CDFG has formation of these vernal pools include the hardpan pools further south (Keeler- some vernal pool areas protected at the the Modesto geologic formation and Wolf et al. 1998). They may display Oroville Wildlife Area, and some vernal Willows and Riz soils series. These white salt deposits following pool pool habitats are protected within the vernal pools occur on alkaline soils and drying. City of Chico. However, the amount of typically form alkali playas which are This unit is primarily located on the vernal pool habitat currently protected larger and contain a more diverse Dolan Ranch Conservation bank. This within the unit is very small. Vernal species composition than the hardpan area supports a number of rare alkaline pools in this unit are highly threatened pools further south (Keeler-Wolf et al. species, and contains remnants of the due to their location on the lower 1998). They may resemble small alkali widespread Colusa Plains vegetation elevation slopes adjacent to agricultural playas, and display white salt deposits that once covered the entire Colusa and urban development. Urban following pool drying. Basin (Silveira 2000). Vernal pool expansion, particularly in the vicinity of This unit is primarily located on the habitats on Dolan Ranch are specifically Chico, is the greatest threat to existing Sacramento National Wildlife Refuge managed for the conservation of listed vernal pool habitats throughout this (5,126 ha (12,816 ac)); however, species. Vernal pool habitats within the unit. additional private lands were included area have become greatly fragmented The boundaries of this unit were within this unit. The refuge supports and isolated from other habitats in the delineated to include the interconnected over 355 native plant taxa, including a region due to urban and agricultural pools, swales, and associated uplands number of rare alkaline species. The land conversions. This unit occurs east mapped by Holland (1998) that Sacramento National Wildlife Refuge of Interstate 5 and the Sacramento River, contribute to the filling and drying of contains the only remnants of the south of the City of Colusa, and west of the vernal pools where vernal pool widespread Colusa Plains vegetation the Colusa National Wildlife Refuge. All tadpole shrimp occur, and maintain that once covered the entire Colusa the lands within this unit are privately suitable periods of pool inundation, Basin (Silveira 2000). Vernal pool owned. habitats on the refuge are specifically water quality, and soil moisture for Unit 7, Beale Unit, Yuba and Placer vernal pool tadpole shrimp to hatch, managed for the conservation of listed Counties (2,853 ha (7,049 ac)) feed, and reproduce. species, and to promote habitat for This unit occupies the northeastern migratory birds and waterfowl. These The Beale Unit is proposed as portion of the Sacramento Valley from avian species likely aid in the dispersal essential because it contains vernal pool near Chico south to the Yuba River in of vernal pool tadpole shrimp and other tadpole shrimp occurrences within large Yuba County. This area represents one vernal pool crustacean cysts. Vernal vernal pool complexes that maintain the of only two vernal pool tadpole shrimp pool habitats within the area have primary constituent elements essential units within the Northeastern become greatly fragmented and isolated for the conservation of the species Sacramento Valley vernal pool region from other habitats in the region due to (Holland 1998, CNDDB 2001, Jones and identified by CDFG (Keeler Wolf et al. agricultural and urban land conversion. Stokes 2002). Vernal pool tadpole 1998). The unit extends southeast of the This unit occurs east of Interstate 5 to shrimp within the Beale Unit live Sacramento River paralleling the low the Colusa Trough from Riz Road on the within large, relatively undisturbed elevation foothill region of the Sierra north and Delevan Road on the south. vernal pool grassland habitats and a Nevada. This unit incorporates portions This unit coincides with Unit 1 for diversity of vernal pool habitat types. of Unit 2 for Butte County meadow foam Colusa grass, Unit 6 for Greene’s Beale Air Force Base contains 8,000 ha and fully incorporates Unit 9 for vernal tuctoria, Unit 3 for hairy Orcutt grass, (19,800 ac) of vernal pool grasslands pool fairy shrimp, Units 3 for Greene’s Unit 3 for Hoover’s spurge, and Unit 2 occurring on four major geologic tuctoria, Unit 2 for hairy Orcutt grass, for Conservancy fairy shrimp. Other formations: the Modesto Formation; the Unit 2 for Hoover’s spurge, and Unit 4 important vernal pool and associated Riverbank Formation; the Laguna for Butte County meadowfoam. Other upland species found in the unit Formation; and the Mehrten Formation. vernal pool species occurring within include pappose spikeweed, Fremont’s Different geologic formations provide a this unit include Bogg’s Lake hedge- goldfields, alkali goldfields, Scribe’s diversity of habitats for vernal pool hyssop, Red Bluff dwarf rush, Douglas’ popcorn flower, Hoover’s downingia, tadpole shrimp primarily through their pogogyne, western spadefoot toad, folded downingia, Heckard’s effects on pool size and depth legenere, California linderiella, peppergrass, heartscale, brittlescale, San (Platenkamp 1998, Helm 1998). King

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(1996) found that vernal pool tadpole Laguna and Arroyo Seco geologic other rare endemic vernal pool species shrimp within this unit were genetically formations, and Northern Volcanic including midvalley fairy shrimp, different than occurrences in other Mudflow vernal pools on the Mehrten legenere, Bogg’s Lake hedge-hyssop, portions of the species range, and Valley Springs geologic formations. Ahart’s dwarf rush, western spadefoot particularly those on the floor of the This unit is one of the few remaining toad, and California linderiella. Central Valley. This unit is also areas where vernal pool tadpole shrimp Unit 9, Cosumnes Unit, Sacramento, designated to ensure that special occur on low terrace landforms on the Amador, and San Joaquin Counties management actions are taken to protect eastern side of the Central Valley, and (29,063 ha (71,813 ac)) vernal pool habitats within the unit, is important to maintain a diversity of including vernal pools created and habitats for the species. The boundaries This unit is proposed as critical restored throughout the unit which of this unit were delineated to include habitat for vernal pool tadpole shrimp require long-term monitoring and the interconnected pools, swales, and because it contains the primary management to ensure they continue to associated uplands mapped by Holland constituent elements necessary for the function as viable vernal pools. This (1998) that contribute to the filling and species survival, including over 30 unit is also important to maintain an drying of the vernal pools where vernal percent of the remaining vernal pool opportunity for long distance dispersal pool tadpole shrimp occur, and habitats in the southern Sacramento of vernal pool tadpole shrimp cysts the maintain suitable periods of pool Valley area (Holland 1998, Sacramento nearest unit to the north is over 45 km inundation, water quality, and soil County 1999). These habitats provide (28 mi), and the nearest unit to the moisture for vernal pool tadpole shrimp the necessary timing, length, and south is over 65 km (40 mi) away. to hatch, mature, and produce cysts. frequency of inundation necessary for This unit contains DOD land (2,006 This unit includes several the survival of vernal pool tadpole ha (5,016 ac) at Beale Air Force Base conservation areas established by shrimp, and this unit supports and 5 ha (13 ac) of BLM land. Other private entities, including the Sunrise numerous occurrences of the species lands within this unit are located on Douglas Conservation Bank, the Arroyo (CNDDB 2001). Vernal pool tadpole private property. Remaining vernal pool Seco Conservation Bank, the Churchill shrimp within this unit occur on a habitats in this unit are threatened by Downs mitigation area, and Teichert diversity of pool types, including agricultural conversion and by urban mitigation areas. These areas were Northern Volcanic Mudflow vernal expansion. Vernal pool habitats in this established specifically to contribute to pools on the Mehrten and Valley area are also threatened by the the conservation of vernal pool tadpole Springs geologic formation overlain by expansion of Highway 70 and other shrimp, and represent compensation Pardee and Pentz soils, vernal pools transportation projects planned in the measures for the loss of thousands of occurring on low terrace landforms region. acres of vernal pool tadpole shrimp associated with San Joaquin soils, and The Beale Unit is located in habitat within Sacramento County. The high terrace landforms associated with southwestern Yuba County, south of the continued functioning of these areas is Redding and Corning soils (USDA Yuba River and Yuba Goldfields, east of essential to the conservation of vernal 2001). King (1996) found that vernal State Route 70, and north of the Bear pool tadpole shrimp and other vernal pool tadpole shrimp within this unit River. The northwestern boundary of pool species. This unit contains areas on were genetically most similar to the unit borders the City of Marysville. private, county, and Federal land, occurrences in Stanislaus County and Other rare vernal pool species found in including lands leased or owned by nearby in Sacramento County. However, this unit include vernal pool fairy Sacramento County at Mather Regional vernal pool tadpole shrimp within this shrimp, California linderiella, legenere, Park, the former Mather Air Force Base, unit were generally different from and dwarf downingia. and at the county landfill. occurrences at other sites sampled Approximately 6 ha (16 ac) within this throughout the species range, and were Unit 8, Mather Unit, Sacramento County unit are BLM lands. Vernal pool habitats very different from vernal pool tadpole (14,866 ha (36,733 ac)) in this unit are threatened by shrimp sampled at sites found further to This unit is proposed as critical urbanization from the expanding cities the west on the floor of the Central habitat for vernal pool tadpole shrimp of Sacramento and Elk Grove. Valley, for example at Jepson Prairie or because it contains 15 percent of all Conversion to intensive agriculture, Kesterson National Wildlife Refuge known occurrences of the species particularly vineyards, is also a (King 1996). (CNDDB 2001) and vernal pools, swales, significant threat to vernal pool tadpole The boundaries of this unit were and other ephemeral wetlands and shrimp in this unit. delineated to include the interconnected depressions mapped by Sacramento This unit includes areas to the east pools, swales, and associated uplands County (1999) and Holland (1998) of and south of the cities of Sacramento mapped by Holland (1998) that appropriate sizes and depths for vernal and Elk Grove in Sacramento County. contribute to the filling and drying of pool tadpole to complete their life cycle. The Cosumnes River forms part of the the vernal pools where vernal pool These areas have been identified by the southwestern boundary of the unit and tadpole shrimp occur, and maintain Sacramento Valley Open Space State Highway 16 lies just south of the suitable periods of pool inundation, Conservancy, the CNPS, and TNC as southeastern boundary of the unit. The water quality, and soil moisture for excellent examples of vernal pool northern boundary is south of State vernal pool tadpole shrimp to complete grasslands, supporting a rich and Highway 50 and the American River. their life cycles. diverse community of vernal pool The eastern boundary of this unit lies This unit contains state and federally endemic plants and animals including just west of Latrobe Road. The unit is owned land, as well as private vernal pool tadpole shrimp. bisected by the Folsom South Canal. properties. Portions of the Cosumnes This unit supports vernal pool This unit also represents Unit 13 for River Preserve occur within this unit. tadpole shrimp occurrences within a vernal pool fairy shrimp, and contains The Cosumnes River Preserve is jointly diversity of vernal pool habitats, Unit 6 for slender Orcutt grass and Unit owned and managed by a variety of including young or low terrace vernal 2 for the Sacramento Orcutt grass. In state, local, and Federal agencies pools on the Riverbank Formation, old addition to vernal pool tadpole shrimp, including the BLM , CDFG, Ducks or high terrace vernal pools on the this unit contains occurrences of many Unlimited, Inc., California Department

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of Water Resources, Sacramento Co. species found within this unit include of soil types, maintaining a diversity of Dept. of Regional Parks, Open Space, Bogg’s Lake hedge-hyssop, Ahart’s habitats for vernal pool tadpole shrimp. and Recreation, TNC, and the Wildlife dwarf rush, Henderson’s bent grass, The relatively undisturbed, Conservation Board. The Cosumnes legenere, Sanford’s arrowhead, hydrologically intact condition of the River Preserve encompasses and pincushion navarretia, dwarf Jepson Prairie increases the likelihood protects thousands of acres of wetlands downingia, California tiger salamander, that it will continue to support natural and adjacent uplands, oak woodlands, western spadefoot toad, and California vernal pool ecosystem processes and and riparian forests along the Cosumnes linderiella. maintain suitable habitat conditions for River, the only undammed river on the vernal pool tadpole shrimp. This unit west slope of the Sierra. The Cosumnes Unit 10, Davis Communications Annex also provides habitat for migratory floodplain is a haven for tens of Unit, Yolo County (192 ha (474 ac)) waterfowl that aid in the dispersal of thousands of migratory waterfowl, This unit is proposed as critical based vernal pool tadpole shrimp and other songbirds, and raptors, for a large on the presence of vernal pool tadpole vernal pool crustacean cysts. King portion of the Central Valley’s shrimp (CNDDB 2001) and vernal pools, (1996) found that vernal pool tadpole population of greater sandhill cranes, swales, and other ephemeral wetlands shrimp within this unit were genetically and for rare reptiles and mammals like and depressions of appropriate sizes distinct from sampled occurrences in the endangered giant garter snake and and depths that typically become other portions of the species’ range, the river otter. These areas provide inundated during winter rains and hold including those just a few miles to the habitat for migratory waterfowl and water for sufficient lengths of time east in Sacramento County. other avian species that aid in the necessary for vernal pool tadpole Jepson Prairie has long been dispersal of vernal pool tadpole shrimp shrimp incubation, reproduction, recognized as an outstanding example of and other vernal pool crustacean cysts. dispersal, feeding, and sheltering, but vernal pool ecosystems. In 1987, the Several large, diverse, vernal pool which are dry during the summer and NPS named Jepson Prairie a National landscapes are protected within this do not necessarily fill with water every Natural Landmark, a designation given unit including the Howard Ranch, and year (Yolo County 1995, Holland 1998, to sites that provide high quality habitat Valensin Ranch. The Clay Station Yolo County Parks 2001). Vernal pool for threatened or endangered species. Mitigation Bank, Laguna Creek tadpole shrimp within this unit are Jepson Prairie is the target of ongoing conservation planning efforts and active Mitigation Bank, and the Borden Ranch found on claypan type vernal pools. management. As part of the UC Reserve Mitigation site are included in this unit, These pools are generally larger and stay System, this area also provides critical as well as a number of smaller inundated for relatively longer periods research opportunities for scientists to conservation areas including the Rancho than vernal pools on alluvial terraces or study vernal pool species, including Seco Preserve. The conservation areas volcanic mudflows and lava flows. This vernal pool tadpole shrimp. contained within this unit have been unit contains DOD (128 ha (321 ac)) and established specifically to contribute to The unit contains lands totaling 2,248 county owned land. Vernal pool ha (901 ac) owned and approximately the survival of vernal pool tadpole habitats in this unit are currently the shrimp, and to compensate for the loss 64 ha (160 ac) administered by CDFG. focus of conservation planning efforts of thousands of acres of vernal pool Additional lands are owned by DOD by Yolo County (Yolo County Parks grassland habitats throughout the (760 ha (1,879 ac)), California State 2001). Southeastern Sacramento Valley vernal Parks (15 ha (38 ac)), and the State Land pool region. This area has been This unit coincides with Unit 2 for Commission (109 ha (273 ac)). TNC has identified by the Sacramento Valley Colusa grass and Unit 1 for Solano grass. a conservation easement on 623 ha Open Space Conservancy, the CNPS, Other rare and special status species (1,558 ac) within this unit, and NRCS and TNC as an excellent example of that occur in this unit are Baker’s holds WRP conservation easements or vernal pool grasslands, supporting a navarretia, western spadefoot toad, agreements for 436 ha (1,090 ac). The rich and diverse community of vernal California tiger salamander, brittlescale, Jepson Prairie Preserve is jointly pool endemic plants and animals within San Joaquin saltbrush, alkali milk-vetch, managed by the Solano Land Trust and Sacramento County. Land ownership palmate-bracted bird’s beak, and the the UC Reserve System. Vernal pool and protection within the unit includes Heckard’s pepper grass. tadpole shrimp on private land within CDFG (630 ha (1,557 ac)), TNC (3,988 ha Unit 11, Jepson Prairie Unit, Solano this unit are threatened by agricultural (9.970 ac)) lands and WRP easements (4 County (34,610 ha (85,521 ac)) conversion, range improvement ha (11 ac)). Vernal pool habitats in this programs, landfill expansion, power unit are threatened by urbanization from This unit is proposed as critical for plant construction, and utility the expanding cities of Sacramento and vernal pool tadpole shrimp because it maintenance. Elk Grove. Conversion from grazing to includes one of the largest contiguous This unit is located in the southern other agricultural practices, particularly areas of habitat remaining for the portion of Solano County, southeast of vineyards, is also a significant threat to species (Holland 1998, Solano County Interstate 80 and the cities of Fairfield vernal pool tadpole shrimp in this unit. 2000, Solano County Farmlands and and Vacaville, north of Grizzly Bay and This unit occupies the area south of Open Space 2000, CNDDB 2001). Vernal Montezuma Slough, west of the Deer Creek and the Cosumnes River to pool tadpole shrimp at Jepson Prairie Sacramento River and the Solano and just south of the Sacramento and San occur in large, playa-like vernal pools Sacramento county line, and south of Joaquin County line near Liberty and which may be over several acres in size, Midway Road and the City of Dixon. Collier roads. The eastern boundary is including the 32 ha (80 ac) Olcott Lake. The unit is bisected by Highway 13 and the low elevation foothills of western The species can also be found in smaller Highway 12. This unit is also described Amador County. The western limit is pools and hogwallow depressions that as Unit 16 for vernal pool fairy shrimp. the Sacramento River. This unit also also occur within this unit. The Jepson This unit contains Unit 3 for Colusa coincides with Unit 19 for vernal pool Prairie area supports vernal pool grass, Unit 2 for Solano grass, Unit 3 for fairy shrimp, and incorporates Unit 1 for tadpole shrimp within unusual Conservancy fairy shrimp, and Unit 4 succulent owl’s-clover, and Unit 3 for combinations of low terrace and basin and portions of Unit 5 for Contra Costa Sacramento Orcutt grass. Other sensitive rim landform vernal pools on a diversity goldfields. Other rare vernal pool

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species which occur in this unit include margin of the San Joaquin Valley. King pool areas delineated by Wetlands alkali milk-vetch, Ferris’s milk-vetch, (1996) found that vernal pool tadpole Research Associates (1999). The vernal pool small scale, dwarf shrimp within this unit, although southern and western boundaries were downingia, Delta green ground beetle, similar to vernal pool tadpole shrimp in delineated to exclude estuarine habitats Bogg’s Lake hedge-hyssop, Ricksecker’s eastern Sacramento County, were and urban areas visible on SPOT water scavenger beetle, California genetically different from other tadpole imagery. This unit is also designated so linderiella, midvalley fairy shrimp, shrimp occurrences sampled throughout that special management actions will be legenere, and California tiger the species’ range, particularly those on taken within vernal pool creation areas salamander. the floor of the Central Valley. occurring within this unit. These areas The Stanislaus Unit contains very have been created specifically to Unit 12, Suisun Marsh Area Unit, high quality, hydrologically intact contribute to the conservation of vernal Solano County (603 ha (1,490 ac)) vernal pool complexes. The well-known pool tadpole shrimp. Monitoring and This unit is proposed as critical for Hickman pools in Stanislaus County are management of these created pools will vernal pool tadpole shrimp because it located within this unit. Not only does be necessary to ensure their continued contains vernal pools that support the the Hickman pool complex contain one suitability for vernal pool tadpole necessary timing, frequency, and of the largest vernal lakes in California shrimp. We own approximately 10 ha duration of inundation essential for at more than 121 ha (300 ac), but it also (24 ac) within this unit. vernal pool tadpole shrimp life history exhibits tremendous biodiversity, This area represents the only location requirements including feeding, including one of the largest where vernal pool tadpole shrimp occur sheltering, reproducing, and dispersing concentrations of imperiled amphibians in the San Francisco Bay region. Vernal (Levine Fricke 2000, CNDDB 2001). This (Medeiros 2000). However, the pool tadpole shrimp within this unit are unit is one of only two areas where watershed containing the Hickman found in a unique tidal marsh estuary vernal pool tadpole shrimp occur in the vernal pools has been breached by area that represents an unusual habitat saline-alkaline transition zone between hundreds of acres of orchards that have type for the species. This unit represents vernal pools and tidal marshes, and been planted upstream. While most of the western extent of the species range, helps to maintain a diversity of habitat the watershed has been managed over and is disjunct from other vernal pool types for this species. All of the habitats the years in a trust of the Fred Robinson tadpole shrimp populations elsewhere within this unit are on private land. The family, the integrity of the vernal pool within the species’ range in central primary threats to vernal pool habitats ecosystem is threatened by agricultural California. This unit is over 60 km (37 within this unit are alterations to development and potential biocide mi) from the nearest unit to the north, hydrology from filling, diking, and pollution (Medeiros 2000). and over 90 km (56 mi) from the nearest dredging activities which may occur in The Stanislaus Unit is bordered by the units to the east and south. Peripheral the tidal marsh. Stanislaus River to the north and Dry populations such as these may have This unit is located near the Suisun Creek to the south and southeast. This genetic characteristics essential to Marsh in southern Solano County, east unit coincides with vernal pool fairy overall long-term conservation of the of Montezuma Slough and west of shrimp Unit 22. It also encompasses species (i.e., they may be genetically Collinsville Road; the northernmost succulent owl’s-clover units 3 and 4, different than more central populations) portion of this unit is bisected by Birds San Joaquin Valley Orcutt grass units 1 (Lesica and Allendorf 1995). Landings Road. Portions of this unit and 2, hairy Orcutt grass units 4 and 5, This unit is situated south of the cities coincide with Unit 4 for Conservancy Colusa grass units 5 and 6, Hoover’s of Fremont and Newark, west of fairy shrimp. This unit also contains spurge units 4 and 5, Greene’s tuctoria Interstate 880 and north of Mud Slough. occurrences of other rare vernal pool units 8 and 9, and Conservancy fairy This unit is a portion of Unit 8B for species including alkali milk-vetch and shrimp units 4 and 6. Other sensitive Contra Costa goldfields. Portions of this dwarf downingia. vernal pool species found within this unit occur within the boundaries of San unit include western spadefoot toad, Francisco Bay National Wildlife Refuge. Unit 13, Stanislaus Unit, Stanislaus, dwarf downingia, California linderiella, This unit includes a preserve Tuolumne, Mariposa, and Merced California tiger salamander, and established as conservation measures for Counties (9,408 ha (23,246 ac) Hartweg’s golden sunburst. All the land vernal pool tadpole shrimp as part of This unit is proposed as critical for within this unit is privately owned. the Pacific Commons development vernal pool tadpole shrimp because it project (Service 2000b). This subunit Unit 14, San Francisco Bay Unit, contains hardpan pools that occur on also supports a large population of the Alameda and Santa Clara Counties (458 soils of alluvial fans and terraces of California tiger salamander. appropriate sizes and depths that ha (1,132 ac) become inundated during winter rains This unit is proposed as critical Unit 15, Merced Unit, Merced and and hold water for sufficient lengths of habitat for vernal pool tadpole shrimp Mariposa Counties (71,076 ha (175,626 time necessary for vernal pool tadpole because it contains occurrences of the ac) shrimp incubation, reproduction, species living within vernal pools that This unit is proposed as critical for dispersal, feeding, and sheltering, but are inundated for sufficient periods of vernal pool tadpole shrimp because it which are dry during the summer and time for vernal pool tadpole shrimp contains more documented occurrences do not necessarily fill with water every hatching, growth, and reproduction, but of the species than any other area year (Holland 1998, CNDDB 2001). are dry during the summer to prevent throughout the species range (CNDDB Vernal pool tadpole shrimp in this unit the establishment of aquatic predators 2001). The vernal pool tadpole shrimp occur within numerous small pools and such as bullfrogs and fish (Holland in this area occur in the largest block of swales on mima mound topography, 1998, CNDDB 2001). The unit boundary pristine, high density vernal pool supported by soils that are typically was identified based on the distribution grasslands remaining in California older than those of the alluvial terraces of vernal pool tadpole shrimp and the (Vollmar 1999). These vernal pools in the Sacramento area. This unit presence of these primary constituent provide the primary constituent contains almost 25 percent of vernal elements, including vernal pools elements essential for the conservation pool habitats found along the eastern mapped by Holland (1998) and vernal of vernal pool tadpole shrimp, and

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supports multiple large vernal pool dwarf downingia, Bogg’s Lake hedge- the east in the foothills of the Sierra tadpole shrimp occurrences that are hyssop, western spadefoot toad, Nevada. capable of producing large numbers of California linderiella, and spiny-sepaled The Grassland Ecological Unit cysts in good years, which is important button celery (Eryngium spinosepalum). includes Kesterson, San Luis, and for this species to survive through a Merced National Wildlife Refuges Unit 16, Grassland Ecological Unit, variety of natural and environmental (13,943 ha (34, 452 ac)), CDFG lands Madera, Merced and Stanislaus changes, as well as stochastic (random) (1,703 ha (4,257 ac)), CDFG Counties (55,910 ha (138,153 ac)) events. The Merced Unit contains administration lands (1,052 ha (2,631 almost 15 percent of all remaining This unit is proposed as critical for ac)), California State Parks (1,358 ha vernal pool habitats in the Central vernal pool tadpole shrimp because it (3,392 ac)), and WRP easements (54 ha Valley, and 40 percent of vernal pool supports seven percent of the known (134 ac)). Together, these areas are habitats along the eastern margin of the occurrences of the species (CNDDB known as the Grasslands Ecological San Joaquin Valley (Holland 1998). 2001) within large vernal pool Area. This area supports diverse Genetic analyses of vernal pool tadpole complexes mapped by Holland (1998). wetland habitats including seasonally shrimp revealed that occurrences in this This is the only area where vernal pool flooded marshlands, semi-permanent unit are genetically different from other tadpole shrimp occur on the floor of the marsh, riparian habitat, wet meadows, sampled occurrences (King 1996). Of all San Joaquin Valley, and contains over vernal pools, native uplands, pastures, occurrences studied, King (1996) found 50 percent of the remaining vernal pool and native grasslands. Wetlands within these to be the most highly divergent. habitats within this region (Holland this area, including seasonal marsh and The integrity of the vernal pool 1998). Vernal pool tadpole shrimp open water habitats, constitute 30 complexes in eastern Merced is within this unit occur on Northern percent of the remaining wetlands in seriously threatened by irrigated Claypan vernal pools formed by a California’s Central Valley and are agriculture, upland housing diversity of vernal pool soil types, extremely important to Pacific Flyway development, and the proposed UC including Delhi-Dello-Himar, Solano- waterfowl populations. Over 60 million Merced Campus and associated Caypay-Willows, Rossi-Waukena, and duck use-day and 3 million goose use- development. Construction of facilities Lewis-Landlow soils (Silveira 2000). days occur annually in this unit. This to educate and serve twenty-five Many of the vernal pools supporting habitat also supports a diversity of other thousand UC students as well as faculty, vernal pool tadpole shrimp within this migratory birds, including raptors, staff, and their families within the unit are large (over several acres in size), shorebirds, wading birds, and other vernal pool complexes in eastern turbid, and alkaline. All of these pool wildlife species. Merced County, could have a major types provide the necessary timing and The unit lies north of the City of Los impact on vernal pool tadpole shrimp length of inundation for vernal pool Banos, southwest of the City of Merced, occurrences. However, the recent draft tadpole shrimp hatching, growth, and and is bisected by the San Joaquin biological opinion for the UC Merced reproduction. River. This unit overlaps Unit 23 for campus and community developed This unit boundary was drawn to vernal pool fairy shrimp and Unit 7 for environmental parameters which should include the large, intact vernal pool Conservancy fairy shrimp. The western reduce impacts to vernal pool habitats. grasslands supporting hydrologically half of this unit also represents Unit 2 Indirect and cumulative impacts of the interconnected pools, swales, and other for longhorn fairy shrimp, and the proposed 1,673 ha (4,133 ac) campus ephemeral wetlands and depressions eastern half represents Unit 8 for Colusa and associated community may be within a matrix of surrounding uplands grass, and Unit 6 for Hoover’s spurge. In minimized with the creation of a 2,036 where vernal pool tadpole shrimp are addition to the species mentioned ha (5,030 ac) preserve intended to known, as mapped by Holland (1998) above, vernal pool smallscale, alkali protect sensitive vernal pool habitat, to and as visible on SPOT imagery. milk-vetch, western spadefoot toad, and be purchased with money donated by However, the 16-ha (40-ac) minimum California linderiella are other special the Packard Foundation. Land mapping unit of Holland (1998), and the status vernal pool species present in this ownership within the unit includes resolution of SPOT imagery, did not unit. approximately 3 ha (8 ac) of BLM, and allow us to exclude all agricultural areas from within this unit. These features, Unit 17, Table Mountain Unit, Fresno 11 ha (26 ac) of California State Parks. County (740 ha (1,829 ac)) TNC has a total of 4,513 ha (11,283 ac) which comprise the vernal pool of conservation easements within this complex, contribute to the filling and This unit is proposed as critical for unit. drying of the vernal pools, and maintain vernal pool tadpole shrimp because it A majority of the vernal pool habitat suitable periods of pool inundation, supports occurrences of vernal pool in the Merced Unit is in Merced County. water quality, and soil moisture for tadpole shrimp (CNDDB 2001) and The eastern edge of the unit generally vernal pool tadpole shrimp hatching, extensive vernal pool complexes follows the Mariposa County line. The growth and reproduction, and dispersal. (Holland 1998, Keeler-Wolf et al. 1998). Chowchilla River in Madera County This unit also provides essential habitat The unit also contains Northern Basalt flows along the southern boundary of for migratory waterfowl that aid in the Flow vernal pools that provide the the unit. The northern boundary dispersal of vernal pool tadpole shrimp necessary timing, frequency, and length parallels the Merced River. The entire and other vernal pool crustacean cysts. of inundation necessary for the species unit is located east of Highway 99. The King (1996) found that vernal pool to hatch, mature, reproduce, and Merced Unit coincides with vernal pool tadpole shrimp occurrences within this complete its life cycle. The basalt flow fairy shrimp Unit 22, succulent owl’s- unit, although most similar to vernal pools within this unit are found clover units 3B, Greene’s tuctoria Unit occurrences at Sequoia Field in Tulare on narrow, sinuous basalt mesas above 6, Conservancy fairy shrimp Unit 6, County, are genetically different from the surrounding low-lying terrain. Colusa grass Unit 7, San Joaquin Valley other vernal pool tadpole shrimp Basalt flow vernal pools are a very rare Orcutt grass units 2 and 3. Other throughout the species range. The habitat type for vernal pool tadpole sensitive vernal pool species found vernal pool tadpole shrimp in this unit shrimp and the habitats within this unit within this unit include the California genetically very different from sampled are important for maintaining the range tiger salamander, shining navarretia, occurrences less than 12 km (7 mi) to of ecological conditions in which the

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species occurs. They typically contain different from other populations Butte County meadowfoam is small, irregularly clustered pools with studied. restricted to a single county in ‘‘flashy hydrology’’ (Keeler-Wolf et al. These pools are the focus of ongoing California. The species is only known 1998). The occurrences of vernal pool conservation efforts by CDFG, who from 11 extant occurrences. An tadpole shrimp in this unit are manage vernal pool habitats at the Stone additional two occurrences are genetically different from occurrences in Corral and Sequoia Field Ecological considered extirpated. Butte County other portions of the species range, Reserves found within this unit. Keeler- meadowfoam is found in four centers of particularly those occurring on the floor Wolf et al. (1998) identified the vernal concentration. One center of of the Central Valley (King 1996). Big pools in these areas as ‘‘high quality concentration is the Shippee Road area Table Mountain, an ancient basalt mesa hardpan pools.’’ Much of the area between Chico and Oroville, while the near Millerton Lake, is found within within this unit is owned by CDFG (348 other three centers of concentration are this unit and is owned and managed by ha 861 ac)) or occurs on private land. in the vicinity of the City of Chico. CDFG, TNC, BLM. Land ownership Agricultural conversion of range or An important consideration for within the unit includes BLM (84 ha barren land, particularly for orchards designating Butte County meadowfoam (209 ac)), CDFG lands (172 ha (430 ac)), and feed lots, as well as residential and critical habitat is to minimize the threat and TNC conservation easements (256 commercial development, have greatly of . All of the ha (639 ac)). All other lands within this reduced the amount of vernal pool Chico area populations have been unit are privately owned. habitat in Tulare County and threatens fragmented by the construction of roads Located in Fresno County, this unit remaining habitats on private land in or canals; several of the now separate contains vernal pool habitats east and this unit. occurrences may well have been This unit is comprised of three south of the San Joaquin River and east continuous in the past. The roads and subunits. Subunit A is located in of Millerton Lake. The unit is west of canals also altered the drainage patterns northwest Tulare County and contains Marshall Station and North of Table at many sites, reducing their suitability vernal pool habitat located west of for Butte County meadowfoam by Mountain Rancheria. This unit Seville. The Friant Kern Canal is north creating conditions too dry or too wet coincides with succulent owl’s-clover of the unit and the Cottonwood Creek for its survival (Dole 1988, Jokerst 1989, Unit 6A and San Joaquin Valley Orcutt Levee is south of the unit. Road 140 Kelley and Associates Environmental grass Unit 6B. Other sensitive vernal runs west of the unit. Subunit B Sciences 1992). Although some plants pool species found within this unit contains vernal pools in northeastern still remained at the type locality as of include the Bogg’s Lake hedge-hyssop, Kings County and northwestern Tulare 1989, the site had been severely Molestan blister beetle (Lytta molesta), County. Highway 99 and St. Johns River degraded by grading, agricultural use, California linderiella, California tiger cut through the unit in a southeasterly and off-road vehicles (Jokerst 1989, Dole salamander, and the western spadefoot direction. Cross Creek and Cottonwood and Sun 1992, 2000). Several toad. Creek cut through the unit in a populations have been reduced in size Unit 18 A, B and C, Tulare Unit, Tulare southwesterly direction. Road 112 is by surface disturbances such as grading County (3,193 ha (7,890 ac)) east of the unit and the Lakeland Canal and removal of topsoil (Jokerst 1989, is west of the unit. The towns of Goshen Service 1992a). This unit is proposed as critical for and Visalia are south of the unit and Another important criterion is that vernal pool tadpole shrimp because it Traver and London are north of the unit. critical habitat units minimize the supports occurrences of the species Subunit C is known as Sequoia Field potential for alterations in hydrology. (CNDDB 2001) within vernal pools that Unit and is located in northwestern Changes in hydrology throughout the provide the essential primary Tulare County. This unit is south of range of Butte County meadowfoam are constituent elements essential for vernal County Road J36. Road 112 crosses possible from developments adjacent to pool tadpole shrimp conservation through the western edge of the unit, extant populations, from further (Holland 1998). The unit boundary was Avenue 352 crosses through the construction of roads and canals, and delineated to include vernal pool southern edge, and State Route 63 from grading or other surface tadpole shrimp occurrences (CNDDB crosses through the eastern edge. The disturbances. Moreover, subtle 2001) and the vernal pool complexes in Cross Creek Unit coincides with vernal hydrological changes that already have which they occur (Holland 1998). pool fairy shrimp Unit 26 and contains taken place are likely to continue However, the 16-ha (40-ac) minimum portions of San Joaquin Valley Orcutt reducing Butte County meadowfoam, mapping unit of Holland (1998), and the grass Unit 8 and Hoover’s spurge Unit leading to the eventual extirpation of resolution of SPOT imagery, did not 9. Other sensitive vernal pool species populations such as one occurrence allow us to exclude all agricultural or found within this unit include the north of the Chico Municipal Airport. developed areas from within this unit. California tiger salamander, spiny- Special management actions may be Vernal pool tadpole shrimp in this area sepaled button-celery, and western necessary in some areas to promote are found within pools formed on San spadefoot toad. occurrences of Butte County Joaquin, Cometa, and Madera soils, meadowfoam. Light grazing may help to among others. This unit represents the Butte County Meadowfoam control competing plant species and southern extent of vernal pool tadpole In proposing critical habitat units for prevent thatch accumulation (Jokerst shrimp’s range. The Sequoia Field Butte County meadowfoam, we 1989). Competition from medusa head occurrence was most closely related to evaluated the life history and current (Taeniatherum caput-medusae) occurrences at Kesterson National distribution of the species, the primary apparently has reduced population size Wildlife Refuge, and was generally more constituent elements, the threats to the and seed set in Butte County similar to other occurrences on the species. This information allowed us to meadowfoam at the Doe Mill Preserve valley floor than occurrences found on determine which areas are likely to (Center for Natural Lands Management the eastern margin of the valley in the contribute to the conservation of these 1997), and invasion of grasses and other Sierra Nevada Foothills. However, King species and to delineate units so that weedy non-native plants poses a (1996) found that vernal pool tadpole threats to this species might be potential problem at three other shrimp within this unit were genetically minimized. occurrences (CNDDB 2002) including

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the occurrence at the Chico airport and or modifications have greatly disturbed This unit for Butte County an occurrence in the southern portion of vernal pool habitats and restricted Butte meadowfoam occupies an area directly the species range near Shippee Road. County meadowfoam’s distribution in northeast and adjacent to the City of this unit. Chico. The unit extends south from Butte County Meadowfoam Unit This unit for Butte County Rock Creek and the Chico Airport to Review meadowfoam occupies an area north of near Big Chico Creek. Highway 99 is We conducted a regional review the City of Chico and includes vernal located west of this unit. This unit is across the range of Butte County pool habitats east of Highway 99 along within Unit 7 for vernal pool fairy meadowfoam to evaluate and select the Sierra foothills from near Pine Creek shrimp, and Unit 3 for vernal pool vernal pool habitats that are essential to southeast to Rock Creek. This unit tadpole shrimp. Other sensitive vernal the conservation of the species and may overlaps Unit 1 for Conservancy fairy pool species found within this unit require special management. Important shrimp, Unit 7 for vernal pool fairy include California linderiella and factors we considered were the known shrimp, and Unit 3 for vernal pool western spadefoot toad. presence of Butte County meadowfoam tadpole shrimp. All the lands within and the presence of the primary this unit are privately owned. Unit 3, Doe Mill Unit, Butte County constituent elements essential to the (1,696 ha (4,191 ac)) conservation of the species. A specific Unit 2, Chico Unit, Butte County (3,508 ha (8,667 ac)) This unit is proposed as critical for description of each area is outlined Butte County meadowfoam because the below. This unit is proposed as critical for species is found living within vernal Butte County meadowfoam because the pools that provide the necessary timing Unit 1, Rock Creek Unit, Butte, and species is present and represents a large Tehama Counties (6,105 ha (15,086 ac)) and duration of inundation for Butte portion of the species range (CNDDB County meadowfoam growth, This unit is proposed as critical for 2002). Vernal pools and swales that reproduction, and dispersal, including Butte County meadowfoam because it have the primary constituent elements vernal pools underlain by the Tuscan contains the species identified by necessary for the conservation of Butte geologic formation on Igo-Redding soils CNDDB (2002) within vernal pools, County meadowfoam occur throughout (EPA 1994, Holland 1998, Liss 2001, swales, and complexes mapped by this unit, including vernal pool habitats CNDDB 2001). This unit is also Holland (1998) and the EPA (1994). on Tuscan-Anita soils and the Tuscan, designated so that special management These habitats contain the primary Riverbank, Redbluff, and Modesto actions, including grazing or other forms constituent elements necessary for the geologic formations (EPA 1994, Holland of thatch removal, will be taken to species survival and long-term 1998, Liss 2001, CNDDB 2001). This reduce the negative effects of invasion conservation, including vernal pools on unit contains individuals from the the Tuscan formation, which typically northern race of the species, which is of non-natives on occurrences of Butte contain water for shorter periods of time genetically different from the southern County meadowfoam. Plants within this than other types of vernal pools. race (Jokerst 1989, Dole and Sun 1992) unit are of the southern race of Butte This unit represents the northern and is important to maintain the species County meadowfoam (Jokerst 1989, Dole extent of Butte County meadowfoam’s genetic diversity. This unit is also and Sun 1992) and comprise a range, and includes occurrences from designated so that special management significant portion of the species genetic the northern race of Butte County actions, such as grazing, will be taken to diversity. meadowfoam. This race is genetically reduce the negative effects of invasion The Doe Mill Preserve (6 ha (15 ac)), different from the southern race (Jokerst of non-natives on occurrences of Butte managed by the City of Chico, is within 1989, Dole and Sun 1992), and is County meadowfoam. This unit is one this unit. Approximately 8.8 ha (22 ac) important to maintain genetic diversity of only four units for Butte County are public lands owned by the USFS. within the species. An introduced meadowfoam across its entire range. The remaining lands within this unit are occurrence also occurs within this unit, Each unit is important to allow the privately owned. Urban development, although this occurrence represents species to tolerate a variety of natural agricultural conversion, and hydrologic individuals thought to be of the and environmental changes, as well as disruptions or modifications have southern race. This unit represents one random (stochastic) events. greatly disturbed vernal pool habitats of only four areas where Butte County The boundaries of this unit were and Butte County meadowfoam meadowfoam occurs throughout its delineated to include the interconnected occurrences throughout this unit. The entire range. Each unit is likely pools, swales, and associated uplands distribution of the species and vernal important to allow the species to mapped by Holland (1998) that pool habitats within the Chico area have tolerate natural and environmental contribute to the filling and drying of become highly fragmented and isolated changes, as well as random (stochastic) the vernal pools where the species from each other. events. occur, and maintain suitable periods of The boundaries of this unit were The boundaries of this unit were pool inundation, water quality, and soil delineated to include the interconnected delineated to include the interconnected moisture for Butte County meadowfoam pools, swales, and associated uplands pools, swales, and associated uplands germination and reproduction. The mapped by Holland (1998) that mapped by Holland (1998) that majority of the lands included within contribute to the filling and drying of contribute to the filling and drying of this unit are privately owned. Portions the vernal pools and swales where the the vernal pools where the species of the Chico County Airport are species occur, and maintain suitable occur, and to maintain suitable periods included within this unit. A protected periods of pool inundation, water of pool inundation, water quality, and area has been set up at Foothill Park. quality, and soil moisture for Butte soil moisture for Butte County Urban development, agricultural Count meadowfoam germination and meadowfoam germination and conversion, and hydrologic disruptions reproduction. This unit occupies an area reproduction. The majority of the lands or modifications have greatly disturbed directly southeast and adjacent to the included within this unit are privately vernal pool habitats and reduced Butte City of Chico. This unit is within Unit owned. Urban development, agricultural County meadowfoam’s distribution 9 for vernal pool fairy shrimp, and Unit conversion, and hydrologic disruptions throughout this unit. 4 for vernal pool tadpole shrimp.

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Unit 4, Oroville Unit, Butte County determine which areas are essential to Ridge (CNDDB 2001), is threatened by (5,011 ha (12,382 ac)) the conservation of this species and to vineyard conversion. Invasion of non-native plants, This unit is proposed as critical for delineate units so that threats to this particularly Italian ryegrass, threatens at Butte County meadowfoam because it species might be minimized. least eight occurrences, several of which contains vernal pools and swales on the Of the 30 occurrences of Contra Costa are also targeted for development Tuscan, Red Bluff and Riverbank goldfields that were documented (CNDDB 2001). Encroachment by non- geologic formations where the species is between 1884 and 1999, 19 are probably native plants often follows surface- found (EPA 1994, Holland 1998, Liss extant. The uncertainty is due in part to disturbing activities such as discing, 2001, CNDDB 2001). This unit contains the difficulty of relocating sites based on grading, filling, and off-road vehicle use, individuals from the southern race of vague descriptions. In addition, this which can alter hydrology and Butte County meadowfoam and species may reappear on a site after several years even if it is absent during microhabitat conditions. Such surface represents an important component of disturbances are apparent at nine sites, the species genetic diversity. This unit a given survey. Contra Costa goldfields is known from disjunct locations in the four of which do not yet have reported also represents the southern extent of problems with non-native species Butte County meadowfoam’s range. The coastal regions of California. By far the greatest concentration of this species is (CNDDB 2001). The CNDDB (2001) cites ‘‘Shipee Site’’ has been described as the livestock grazing as a threat to seven type locality for the species and is in the area east of Fairfield in Solano County. Additional occurrences are occurrences. However, grazing may help located within this unit. This unit is to control invasion of non-native plants also designated so that special extant at Fort Ord in Monterey County, the San Francisco Bay National Wildlife under certain conditions. Contra Costa management actions, such as grazing, goldfields persisted through horse will be taken to reduce the negative Refuge and near Fremont in Alameda County, near Rodeo in Contra Costa grazing on Travis Air Force Base, but effects of invasion of non-natives on several small colonies disappeared occurrences of Butte County County, near Manchester in Mendocino County, and at Suscol Ridge and when horses were excluded. Even meadowfoam. This unit represents one moderately heavy grazing can be of only four units for Butte County Milliken Canyon in Napa County (CNDDB 2001). compatible with Contra Costa goldfields meadowfoam across its entire range. All if it is suspended during critical growth Urban and residential development four of these units are essential for the periods. Occurrences of Contra Costa are believed to be responsible for the species to endure through a variety of goldfields in the Fort Ord area of loss of at least four Contra Costa natural and environmental changes, as Monterey County exist at locations that goldfields occurrences east of San well as random (stochastic) events. have or potentially contain ordinance Francisco Bay. Although the original The lands included within this unit and explosives that are byproducts of collection sites cannot be pinpointed are privately owned. Urban military training activities. Efforts at the from the descriptions given on development, highway expansion and former military base have been specimen labels, the areas in question construction, agricultural conversion, underway to remove and dispose of (Antioch, Concord, Newark, San Jose, and hydrologic disruptions or these items. Clearance of ordinance and and Walnut Creek) are highly modifications have greatly impacted explosives may involve selectively developed. One site in Fremont (near vernal pool habitats and restricted Butte removing vegetation, digging to expose Newark) was degraded by cultivation County meadowfoam’s distribution buried objects, burning, and clearing of and operation of a racetrack, but Contra throughout this unit. The distribution of the ground surface. Project personnel Costa goldfields reappeared the species and vernal pool habitats have and will continue to implement approximately a decade after the fields within the Chico area have become measures that are designed to minimize were abandoned (Baye in litt. 2000a). highly fragmented and isolated from and mitigate adverse effects to Contra Urbanization is presumed to have each other. Costa goldfields as ordinance and extirpated one or more occurrences near The boundaries of this unit were explosive removal activities proceed, Santa Barbara. One Napa County delineated to include the interconnected but a potential exists that some plants occurrence was destroyed by conversion pools, swales, and associated uplands and habitat may be affected by the clean to a vineyard. At least four former mapped by Holland (1998) that up activities. contribute to the filling and drying of occurrence sites in Solano County have the vernal pools where the species been degraded by surface disturbances, Contra Costa Goldfields Unit Review occur, and maintain suitable periods of including discing and creek We conducted a regional review pool inundation, water quality, and soil channelization, which removed some across the range of Contra Costa moisture for Butte County meadowfoam habitat, altered the hydrology, and goldfields to evaluate and select areas germination and reproduction. This unit allowed invasion of non-native, upland that are essential to the conservation of occupies an area northwest of the City plants. Contra Costa goldfields has not the species and that may require special of Oroville. The unit is located south of grown at three of these sites during the management. Important factors we Dry Creek near State Route 70 southeast past 10 years (CNDDB 2002). considered were the presence of the to the Thermalito Diversion Pool. This Urbanization is the greatest threat to species and the primary constituent unit is within Unit 4 for vernal pool Contra Costa goldfields. Except for elements essential to the conservation of tadpole shrimp, and encompasses part Travis Air Force Base, the entire the species. A specific description of of Unit 5 for Greene’s tuctoria. concentration area in Solano County is each area is outlined below. in the Fairfield sphere of influence and Contra Costa Goldfields is subject to development under the Unit 1, Manchester Unit, Mendocino In proposing critical habitat units for city’s general plan. Development also County (1,067 ha (2,637 ac)) Contra Costa goldfields, we evaluated threatens one of the two remaining This unit is proposed as critical the life history and current distribution Alameda County/San Francisco Bay habitat for Contra Costa goldfields of the species, the primary constituent occurrences. Another serious threat is because it contains the last known elements, and the current threats to the conversion to vineyards. The largest occurrence of Contra Costa goldfields in species. This information allowed us to Napa County occurrence, at Suscol Mendocino County and is the northern

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and western limit of the species range areas associated with the vernal pool are outside the currently known range of (CNDDB 2002). Vernal pools in which habitat and associated uplands that Contra Costa goldfields. Contra Costa goldfields are found occur contribute to the filling and drying of This unit is located primarily on on Crispin loam soils, which provide the vernal pools where the Contra Costa private land, but also includes DOD the necessary timing and length of goldfields occur. The unit includes area property at Travis Air Force Base (1,931 inundation to meet the life history sufficient to maintain suitable periods of ha (4,828 ac)), CDFG land (117 ha (292 requirements of Contra Costa goldfields. pool inundation, water quality, and soil ac)), and State Land Commission This is also the only location where moisture for Contra Costa goldfields to Property (4 ha (9 ac)). Conservation Contra Costa goldfields is found on this germinate, grow, and reproduce. areas have been established for Contra soil type. This unit represents some of the last Costa goldfields at Travis Air Force This unit represents the only remaining vernal pool habitats in the Base, and these occurrences are the occurrence of Contra Costa goldfields in north bay foothills, and is the only unit subject of on-going research projects the Mendocino coast area. This unit is for Contra Costa goldfields in this area. addressing the restoration and over 140 km (87 mi) from the closest This unit is over 25 km (15 mi) from the management of this and other vernal Contra Costa goldfields unit to the nearest Contra Costa goldfields unit. pool species and their habitats. Vernal south. Peripheral populations such as This unit is located south of Lake pool habitats within this unit are this may have genetic characteristics Berryessa and lies in the Milliken threatened by urbanization from the essential to the overall long-term Canyon area east of the City of cities of Fairfield and Suisun City, and conservation of the species (i.e., they Yountville and northeast of the City of by large-scale transportation projects, may be genetically different from more Napa. Other sensitive vernal pool such as Jepson Parkway. The remaining central populations) (Lesica and species found within this unit include vernal pool habitats within the City of Allendorf 1995). dwarf downingia, and few-flowered Fairfield and Suisun City are currently The boundaries of this unit were navarretia. All the lands within this unit the subject of conservation planning delineated by using SPOT imagery and are privately owned. efforts by local agencies. elevation contours to include the open Unit 3, Napa River Unit, Napa and This unit occurs in the southern flat areas associated with the vernal Sonoma Counties (275 ha (678 ac)) pool habitat and associated uplands that portion of Solano County, northeast of contribute to the filling and drying of This unit is proposed as critical for the City of Fairfield, southwest of the the vernal pools where the Contra Costa Contra Costa goldfields because the City of Vacaville, and north of the goldfields occur. The unit includes area species is found within vernal pool Potrero Hills and Nurse Slough. This sufficient to maintain suitable periods of habitats that support the primary unit overlaps with Unit 3 for pool inundation, water quality, and soil constituent elements essential to the Conservancy fairy shrimp, and is a moisture for Contra Costa goldfields to conservation of Contra Costa goldfields portion of Unit 11 for vernal pool germinate, grow, and reproduce. (CNDDB 2002). This unit is located on tadpole shrimp and Unit 16 for vernal This unit is on private land and private land, including the Suscol Ridge pool fairy shrimp. Other rare vernal threats to this unit include conversion area, which is threatened by vineyard pool species which occur in this unit to vineyards, erosion, draining, and conversion. This unit is located directly include alkali milk-vetch, legenere, and residential development. This unit is east of the Napa River adjacent to the California tiger salamander. located in the vicinity of the town of salt marsh areas of the lower Napa Unit 5 A and B, Suisun Marsh Area Manchester just north of the Garcia River. Other rare vernal pool species Unit, Solano County (411 ha (1,014 ac)) River and east of the Pacific Ocean. found in this unit include alkali milk- State Highway 1 bisects this unit and vetch. This unit is proposed as critical habitat for Contra Costa goldfields Brushy Creek forms the northern and Unit 4, Travis and Fairfield Unit, Solano northeastern boundary of the unit. because it contains occurrences of the County (7,885 ha (19,484 ac)) species within vernal pools in the Unit 2, Berryessa Unit, Napa County This unit is proposed as essential for saline-alkaline transition zone between (411 ha (1,016 ac)) the conservation of Contra Costa vernal pools and tidal marshes on This area is proposed as critical goldfields because it contains 30 percent Rincon soil series (USDA 1994, CNDDB habitat for Contra Costa goldfields of the known occurrences of this species 2002). The boundaries of this unit because the species is found (CNDDB within vernal pools in alkaline and includes the vernal pool complexes 2002) within rock outcrops pools on saline-alkaline sites, as well as those on mapped by Holland (1998) and the soils derived from Rhyolite lava flows, San Ysidro and Antioch soil series grassland habitats mapped by Solano within chaparral ecosystems (Holland (Holland 1998, USDA 2001, Solano County (2001) where Contra Costa 1998, USDA 2001, CNDDB 2002). These County 1999, CNDDB 2002). The unit goldfields occurs (CNDDB 2001). These pools provide the necessary primary boundary was delineated to include habitats provide the necessary timing constituent elements essential for the Contra Costa goldfields occurrences and and length of inundation for Contra conservation of Contra Costa goldfields. the vernal pool complexes in which Costa goldfields germination, This is the only unit where Contra Costa they occur. These complexes contribute maturation, reproduction, and dispersal goldfields occurs on Northern Basalt to the filling and drying of Contra Costa (CNDDB 2001). Flow vernal pools, and this area is goldfields habitats, and maintain The primary threats to Contra Costa important to maintain the range of suitable periods of pool inundation, goldfields habitats within this unit are habitats in which the species is known water quality, and soil moisture for alterations to hydrology from filling, to occur. Contra Costa goldfields germination, diking, and dredging activities which The boundaries of this unit were growth and reproduction, and dispersal, may occur in the tidal marsh. Most of delineated by using SPOT imagery, but not necessarily every year. The the habitats within this unit are on elevation contours, and CNDDB (2002) eastern boundary of this unit was private land, although portions of the data which identified Northern Basalt identified by the Elmira watershed Hill Slough Wildlife Area managed by Flow vernal pool habitat within the boundary to exclude vernal pool the CDFG are also included within this unit. The unit includes the open flat habitats in the Jepson Prairie area that unit. Subunits in the vicinity of

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Fairfield and Suisun City are also within vernal pools formed on Linne southernmost subunits and is situated threatened by urbanization. clay loam soils, and has been south of the cities of Fremont and This unit consists of two subunits in characterized as alkaline meadow Newark and north of Mud Slough. the Suisun Marsh area of southern (USDA 2001, CNDDB 2002). This Portions of this unit is found within the Solano County. Subunit 5A is the habitat provides the timing and boundaries of San Francisco Bay westernmost subunit and is located frequency of inundation essential to the National Wildlife Refuge and the rest is south and east of the City of Cordelia germination, growth, and reproduction privately owned. and the junction of Interstate Highways of Contra Costa goldfields, and this area Unit 9, Fort Ord Unit, Monterey County 80 and 680; this subunit is bisected by includes a unique habitat type for this (3,372 ha (8,331 ac)) the Southern Pacific Railroad line. species. The unit boundary includes Subunit 5B is located southwest of the vernal pool complexes mapped by The Fort Ord unit includes seasonally City of Fairfield and west of the City of Holland (1998) where Contra Costa flooded pool habitats and mima mound Suisun City; this subunit is bisected by goldfields is known to occur (CNDDB grassland areas that are within the the Southern Pacific Railroad line. In 2002). This unit is over 35 km (22 mi) boundary of an area that was previously addition to vernal pool fairy shrimp and from the closest unit to the north, and managed as the Fort Ord Army Base. vernal pool tadpole shrimp, this unit almost 50 km (32 mi) from the closest These lands are now or will be managed contains occurrences of other rare unit to the south. by a number of Federal and local vernal pool species including alkali This unit is in the vicinity of Byron governments following a transfer from milk-vetch and dwarf downingia. Hot Springs and Byron Airport and lies the DOD. Approximately 2,894 ha directly west of Clifton Court Forebay. (7,234 ac) of this unit are currently Unit 6, Rodeo Creek Unit, Contra Costa This unit mostly includes habitat in owned by the DOD, 437 ha (1,093 ac) by County (243 ha (599 ac)) low-lying areas east of Altamont Hills, BLM, and 2 ha (4 ac) by Monterey This unit is proposed as critical but also includes habitat within a small County. The critical habitat unit habitat for Contra Costa goldfields portion of Altamont Hills. A small includes a number of seasonally-flooded because it supports occurrences of the portion of this unit overlaps with Unit wetland habitats and at least four species within vernal pool habitats 19B for vernal pool fairy shrimp. locations that possess Contra Costa formed on Conejo clay loam soils Approximately 232 ha (581 ac) within goldfields. Monitoring activities at two (USDA 2001, CNDDB 2002). The unit this unit are owned by the CDFG and 55 of the four locations suggest that listed boundary was delineated to include the ha (137 ac) are owned by the State Land plant numbers vary on an annual basis, features that contribute to the filling and Commission the rest is privately owned. and that differences in species drying of the vernal pools where Contra abundance may be attributable to Costa goldfields occurs, and that Unit 8, Southeastern San Francisco Bay differences in annual rainfall totals and maintain suitable periods of pool Unit, Alameda and Santa Clara water duration in ponded areas inundation, water quality, and soil Counties (458 ha (1,132 ac)) (Harding Lawson Associates 2001). The moisture for Contra Costa goldfields’ This unit is proposed as critical for total combined population estimates for germination, growth and reproduction, Contra Costa goldfields because it the two areas where monitoring and dispersal, but not necessarily every contains occurrences of this species occurred in 1998, 1999, and 2000 were year. It is the only area where the within vernal pools, swales, moist flats, 500–1500, 56,000, and 162,500 species occurs in the vicinity of the and other ephemeral wetlands in saline individuals, respectively. The areas on Sacramento-San Joaquin delta. This unit alkaline transition zones with tidal the former military base that contain is over 25 km (16 mi) from the closest marsh habitats that sustain Contra Costa Contra Costa goldfields are being unit to the north, and almost 50 km (32 goldfields germination, growth and transferred to the BLM as a habitat mi) from the closest unit to the south. reproduction (CNDDB 2002, Holland reserve Natural Resource Management This unit is situated along Rodeo 1998). The unit boundary was identified Area. Contra Costa goldfields in Creek and adjacent to State Highway 4. based on the distribution of Contra Monterey County are located 60 miles The unit lies southeast of the City of Costa goldfields and the presence of south of other locations where the Rodeo and northeast of the City of these primary constituent elements, species has been documented. This unit Hercules. The unit contains a 3.94 ha including vernal pools mapped by is essential to the conservation of Contra (9.74 ac) conservation easement area Holland (1998) and vernal pool areas Costa Goldfields because it contains the established in 1999 to protect three delineated by Wetland Research southern-most extant occurrence of the known locations of Contra Costa Associates (1999). The southern and species. goldfields along Rodeo Creek from western boundaries were delineated to highway construction activities along exclude estuarine habitats and urban Hoover’s Spurge Criteria State Route 4. Other rare species which areas visible on SPOT imagery. In proposing critical habitat units for occur in this unit include the federally This unit contains a 180 ha (450 ac) Hoover’s Spurge we evaluated the life threatened California red-legged frog preserve established specifically to history and current distribution of the and another sensitive species, the contribute to the recovery of Contra species, the primary constituent western pond turtle (Clemmys Costa goldfields (Service 2000b, elements, and the current threats to the marmorata). All the lands within this Wetland Research Associates 1999) and species. This information allowed us to unit are privately owned. 443 ha (1,108 ac) of this unit is owned determine which areas are likely to by the Service. This unit is over 50 km contribute to the conservation of these Unit 7, Byron Hot Springs Unit, Contra (31 mi) from the nearest units to the species. Costa County (1,379 ha (3,406 ac)) north, and almost 100 km (62 mi) from The CNDDB (2001) includes 30 This unit is proposed as critical the nearest Contra Costa goldfields unit occurrences of Hoover’s spurge, six of habitat for Contra Costa goldfields to the south. which were discovered in 1992 (three because it contains the only remaining This unit occurs in southeastern San each in Glenn and Tulare counties). Of extant occurrence of Contra Costa Francisco Bay and also represents Unit the 30 occurrences, one each in Tehama goldfields in southeastern Contra Costa 14 for vernal pool tadpole shrimp. The and Tulare counties are classified as County (CNDDB 2001). This occurrence unit lies between the northernmost and extirpated; two others, in Butte and

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Tehama counties, are ‘‘possibly according to Dempster 1993) and Holland 1998, CNDDB 2002). The Vina extirpated’’ because this species was not swamp grass (Crypsis schoenoides) Plains Unit contains over 50 percent of observed for 2 consecutive years (Stone (Silveira in litt. 2000, CNDDB 2001). On the known occurrences of Hoover’s et al. 1988, CNDDB 2001). Of the 26 the Vina Plains Preserve, the pools with spurge, including several large, stable occurrences presumed to be extant, only Hoover’s spurge also had the highest occurrences (CNDDB 2002). This area 12 have been observed within the past frequency of bindweed, at least in 1995 represents the northern extent of the decade (CNDDB 2001). (Alexander and Schlising 1997). species range. The main area of concentration for Increasing dominance by these The boundaries of this unit were Hoover’s spurge is within the Vina competitors may be associated with delineated to include the interconnected Plains area of Tehama and Butte changes in hydrology and livestock pools, swales, and associated uplands counties, which contains over half of grazing practices (Stone et al. 1988, mapped by Holland (1998) that the 26 presumed extant occurrences for Alexander and Schlising 1997, CNDDB contribute to the filling and drying of Hoover’s spurge (CNDDB 2001). One 2002). the vernal pools where the species other site in the same region is near The issue of livestock grazing effects occur, and maintain suitable periods of Chico in Butte County. Other extant on Hoover’s spurge is complex. In pool inundation, water quality, and soil occurrences of the species are found in general, moderate levels of grazing moisture for Hoover’s spurge the Visalia-Yettem area of Tulare appear to be compatible with Hoover’s germination and reproduction. County, the Hickman-La Grange area of spurge and presumably benefit the The majority of the lands included Stanislaus County, the Sacramento species by reducing competition from within this unit are privately owned. National Wildlife Refuge in Glenn other plants (Stone et al. 1988). This unit contains TNC’s 1862 ha (4,600 County, and on the Bert Crane Ranch in Livestock do not eat Hoover’s spurge ac) Vina Plains preserve. The preserve Merced County (CNDDB 2001). because it grows so close to the ground contains over 300 species of plants and One population of Hoover’s spurge in and possibly because the milky sap is diverse communities of aquatic Tulare County and another in Tehama toxic (Wheeler 1941, Stone et al. 1988). invertebrates. Since the 1960s, the Vina County were destroyed when the areas During 1986 and 1987, Stone et al. Plains area has been the focus of a were converted for agricultural use (1988) deemed the intensity of cattle number of research projects, including (CNDDB 2002). Agricultural conversion grazing at most Hoover’s spurge sites to long-term adaptive management and continues to threaten Hoover’s spurge, be appropriate. In fact, several species monitoring efforts evaluating of the particularly in Stanislaus County (Stone experts (Stone et al. 1988, Silveira in effects of grazing and fire on vernal pool et al. 1988). However, more subtle litt. 2000) have cautioned that decreases plants (Griggs 2000). Much of the basic factors such as changes in hydrology, in grazing intensity could be life history information known about invasion by aggressive plants, and detrimental to Hoover’s spurge. On the Hoover’s spurge was collected at Vina inappropriate livestock grazing regimes other hand, cattle trampling has Plains (e.g., Stone et al. 1988, Alexander constitute a greater threat to survival of seriously reduced Hoover’s spurge and Schlising 1997). The results of this the species at this time. Five of the populations at one site each in Butte research have provided crucial remaining occurrences of Hoover’s and Stanislaus counties (Stone et al. information to guide management and spurge are subject to obvious hydrologic 1988), and increased summer stocking monitoring of vernal pool ecosystems threats; four of the five are in the San rates at other sites could similarly and to identify factors which influence Joaquin Valley and the fifth is in the damage those populations. population dynamics of a number of Vina Plains. Hydrology has been altered Populations with small numbers of endangered species. by (1) construction of levees and other plants may be more vulnerable to The Vina Plains is open to the public water barriers and (2) by runoff from extirpation from random events (Shaffer and provides excellent outreach and adjacent agricultural operations, roads, 1981, Menges 1991). This may be the educational opportunities. In addition and culverts. Due to these changes, case for at least four of the known to TNC, the importance of vernal pool some pools receive insufficient water occurrences, which total fewer than 100 habitats in this area has been recognized and others remain flooded for too long individuals even in favorable years by the CDFG, the Service, the EPA, the to allow growth of Hoover’s spurge. (CNDDB 2002). CNPS, the NRCS’s WRP, and by Although no occurrences have been researchers at the CSU at Chico, who completely extirpated due to hydrologic Hoover’s Spurge Unit Review have all supported research and changes, the species has been We conducted a review across the conservation efforts for Hoover’s spurge eliminated from one or more individual range of Hoover’s spurge to evaluate and and other vernal pool species within pools at several sites and a number of select areas that are essential to the this unit. Urban development north of the remaining populations appear to be conservation of the species and that may Chico and the conversion of grazed declining (Stone et al. 1988, Stebbins et require special management. Important lands to more intensive agricultural uses al. 1995, CNDDB 2002). factors we considered were the threaten vernal pool habitat within this Competition from invasive native or documented presence of the species and unit. non-native plant species threatens nine the presence of the primary constituent This unit for Hoover’s spurge of the extant occurrences, including elements essential to the conservation of occupies the area south of Toomes eight in the Vina Plains and one on the the species. A specific description of Creek and north of Pine Creek to near Sacramento National Wildlife Refuge in each area is outlined below. Cana Highway. State Route 99 bisects Glenn County. Native competitors of this unit and the western boundary Hoover’s spurge include coyote-thistle, Unit 1, Vina Plains Unit, Tehama and generally parallels the Southern Pacific alkali mallow (Malvella leprosa, a Butte Counties (11,673 ha (28,845 ac)) Railway line. This unit overlaps Unit 7 noxious weed according to Hill 1993), This unit is proposed as critical for for vernal pool fairy shrimp, Unit 3 for lippia (Phyla nodiflora), hard-stemmed Hoover’s spurge because it supports vernal pool tadpole shrimp, Unit 1 for tule (Scirpus acutus var. occidentalis), numerous occurrences of the species Conservancy fairy shrimp, Unit 2 for alkali bulrush (Scirpus maritimus), and within vernal pools on acidic soils over Greene’s tuctoria, Unit 1 for Hoover’s cocklebur. Non-native competitors iron-silica cemented hardpan, including spurge, and Unit 4 for slender Orcutt include bindweed (a noxious weed Anita and Tuscan soils (USDA 2001, grass. Additional sensitive vernal pool

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species occurring in this unit include diversity of environmental conditions in conservation of Hoover’s spurge. California linderiella and Bogg’s Lake which Hoover’s spurge is known to Hoover’s spurge is sparsely distributed hedge-hyssop. Property ownership and occur. This area represents one of only in the southern Sierra Nevada foothills, protection within this unit includes three general locations where Hoover’s and these occurrences are highly CDFG (0.4 ha (1 ac)), CDFG spurge is found in the Sacramento disjunct from the occurrences of administration (0.4 ha (1 ac)), TNC Valley, and is one of only seven areas Hoover’s spurge in the northern portion (2,295 ha (5,738 ac)), TNC easements across its entire range where Hoover’s of the species range. This unit is over (4,661 ha (11,653)), and WRP easements spurge is known to occur. This unit is 225 km (140 mi) from the nearest units and agreements (57 ha, 142 ac)). over 40 km (25 mi) from the nearest unit to the north. The largest threat to to the northeast, and over 225 km (140 Hoover’s spurge in this unit is Unit 2, Butte Unit, Butte County (979 ha mi) from the nearest unit to the south. agricultural conversion (Stone et al. (2,418 ac)) Hoover’s spurge occurrences at the 1988). Cattle trampling has also This unit is proposed as critical Sacramento National Wildlife Refuge impacted an occurrence of Hoover’s habitat for Hoover’s spurge because it have been monitored annually since spurge in the southeastern region of the supports the species within vernal pools 1992 (Silveira in litt. 2000). unit (CDNNB 2001). There are on acidic Tuscan soils over iron-silica The boundaries of this unit were numerous deep pools in this area that cemented hardpan (CNDDB 2002, Liss delineated to include the interconnected provide suitable habitat for Hoover’s 2001, USDA 2001, Holland 1998, EPA pools, swales, and associated uplands spurge because the duration of 1994) and the vernal pool habitat mapped by Holland (1998) that inundation is generally longer than in remains inundated for sufficient periods contribute to the filling and drying of shallow pools. These pools contain of time to allow Hoover’s spurge to the vernal pools where the species habitat components that are essential for complete its life-cycle. This unit occur, and maintain suitable periods of the primary biological needs of represents one of only three areas where pool inundation, water quality, and soil germination, growth, reproduction, and Hoover’s spurge is known to occur in moisture for Hoover’s spurge dispersal of the species. the Sacramento Valley, and is over 225 germination and reproduction to take The unit boundary was drawn to km (140 mi) from the nearest occupied place. include species occurrences and the areas to the south. This unit for Hoover’s spurge vernal pool complexes in which they The boundaries of this unit were occupies the vernal pool habitat and occur as mapped by Holland (1998) and delineated to include the interconnected surrounding area east of Interstate 5 to as visible on SPOT imagery, as well as pools, swales, and associated uplands the Colusa Trough from Riz Road on the elevation contours in the eastern foothill mapped by Holland (1998) that north and Delevan Road on the south. region and sub-watershed boundaries. contribute to the filling and drying of The area encompasses a portion of the The Waterford Unit is bordered by the the vernal pools where the species Sacramento National Wildlife Refuge Tuolumne River to the south. The occur, and maintain suitable periods of (5,126 ha (12,816 ac)). The remaining Modesto Reservoir is adjacent to the pool inundation, water quality, and soil portions of the unit are privately owned. southwest boundary of the unit. moisture for Hoover’s spurge This unit is also part of vernal pool fairy Warnerville Road cuts through the germination and reproduction. Hoover’s shrimp Unit 10, and vernal pool tadpole northern portion of the unit. The City of spurge is known from only seven shrimp Unit 5, and coincides with Unit La Grange is located southeast of the general locations across its entire range, 2 for Conservancy fairy shrimp, Unit 1 unit. The eastern boundary extends into and each of these locations is essential for Greene’s tuctoria, and Unit 3 for the low elevation foothills of the Sierra to the conservation of this species. hairy Orcutt grass. Other vernal pool Nevada. Vernal pools in the Waterford This unit for Hoover’s spurge and associated upland species found in Unit are located mainly in eastern occupies the area north of the the unit include pappose spikeweed, Stanislaus County, but overlap into intersection of State Route 99 and Route Fremont’s goldfields, alkali goldfields, western Tuolumne County. This unit 149 in Butte County. The eastern Scribe’s popcorn flower, Hoover’s coincides with Colusa grass Unit 4, San boundary extends up the watershed of downingia, folded downingia, Heckard’s Joaquin Valley Orcutt grass Unit 1, and Clear Creek and the western boundary peppergrass, heartscale, brittlescale, San hairy Orcutt grass Unit 4. It overlaps extends south paralleling State Route 99 Joaquin spearscale, Ferris’ milk-vetch, succulent owl’s-clover Unit 2 and to Little Dry Creek. This unit is within spike-primrose, sessile mousetail, and Greene’s tuctoria Unit 6. Other sensitive Unit 9 for vernal pool fairy shrimp and palmate-bracted bird’s beak. vernal pool species found within this Unit 4 for vernal pool tadpole shrimp, unit include California tiger salamander, Unit 4, Waterford Unit, Stanislaus and and coincides with Unit 3 for Greene’s western spadefoot toad, dwarf tuctoria and Units 2 and 3 for hairy Tuolumne Counties (16,839 ha (41,609 downingia, and California linderiella. Orcutt grass. All the land within this ac)) CDFG administers approximately 0.8 ha unit is privately owned. This unit is proposed as critical (2 ac) of this unit. The remaining land habitat for Hoover’s spurge because it within this unit is privately owned. Unit 3, Sacramento National Wildlife supports the species within vernal pools Refuge Unit, Glenn and Colusa Counties on Whitney sandy loam soils that Unit 5, Turlock Unit, Stanislaus and (5,718 ha (14,129 ac)) maintain the necessary timing and Merced Counties (19,850 ha (49,049 ac)) This unit is proposed as critical duration of inundation for Hoover’s This unit is proposed as critical habitat for Hoover’s spurge because it spurge germination, growth, and habitat for Hoover’s spurge because it contains multiple occurrences of the reproduction (USDA 2001, CNDDB contains occurrences of the species species within alkaline vernal pools on 2002). This unit contains soils that are within large vernal pools on Meikle Willows and Riz soil types (Holland typically older than those of the alluvial soils, including two of the seven known 1998, Silveira 2000, CNDDB 2002). The terraces in the Sacramento area which occurrences of Hoover’s spurge on the vernal pool habitat remains inundated are estimated to be early Pleistocene. eastern margin of the San Joaquin Valley for sufficient periods of time to allow The Waterford Unit contains very (Holland 1998, CNDDB 2002). One Hoover’s spurge to complete its life high quality, hydrologically intact occurrence is within the well-known cycle. This habitat contributes to the vernal pool complexes important for the Hickman pools in Stanislaus County.

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Not only does the Hickman pool Unit 6, Grasslands Unit, Madera, species (i.e., they may be genetically complex contain one of the largest Merced and Stanislaus Counties (14,310 different than more central populations) vernal lakes in California at more than ha (35,359 ac)) (Lesica and Allendorf 1995). Hoover’s 121 ha (300 ac), but it also exhibits This unit is proposed as critical spurge populations in Tulare County tremendous biodiversity (Medeiros habitat for Hoover’s spurge because it typically flower from late May through 2002). support occurrences of the species July, whereas those in Stanislaus and Sacramento County typically flower The Turlock Unit contains large intact within saline-alkaline vernal pools on from mid-June into October (Alexander and contiguous vernal pool grassland Lewis soils (USDA 2001, CNDDB 2002). and Schlising 1997). This phenotypic areas that help maintain connectivity The unit boundary was designated to variation also suggests there may be between hairy Orcutt grass habitat to the include occurrences of Hoover’s spurge regional differences between these and north and south. There are numerous and the vernal pool complex in which they occur (Holland 1998). The vernal other occurrences in other portions of vernal pools, swales, and other the species range. ephemeral wetlands and depressions of pools, swales, and associated uplands appropriate sizes and depths in this unit within this unit contribute to the filling This unit includes several protected and drying of Hoover’s spurge habitat, to sustain Hoover’s spurge germination, areas, including the Sequoia Fields and maintain suitable periods of pool growth and reproduction. Hoover’s Ecological Reserve and the Stone Corral inundation, water quality, and soil spurge populations in Stanislaus County Ecological Reserve in Tulare County moisture for Hoover’s spurge managed by CDFG (355 ha (877 ac)) as typically flower from mid-June into germination, growth and reproduction, well as 13 ha (33 ac) of BLM land. Other October, whereas those in Merced and and dispersal. areas within this unit are privately Tulare counties typically flower from The Grasslands Unit includes owned, and are threatened by late May through July (Alexander and portions of the Kesterson, San Luis, and conversion to irrigated agriculture of Schlising 1997). The Hoover’s spurge Merced National Wildlife Refuges (3,232 range. This unit contains scattered habitat in this unit is important to ha (7,985 ac). The remaining land vernal pool complexes in northwestern conserve phenotypic variation within within this unit is privately owned. This Tulare County. This unit contains the species and to maintain the unit contains a diversity of vernal pool deeper pools that maintain suitable geographic distribution of Hoover’s types, including vernal pools occurring periods of pool inundation, water spurge throughout its range. on Delhi-Dello-Himar, Solano-Caypay- quality, and soil moisture for vernal The largest threat to this species in Willows, Rossi-Waukena, and Lewis- pool plant germination, growth and this unit is agricultural conversion Landlow soils (USDA 1994). This unit reproduction, and dispersal. contains the majority of the remaining (Stone et al. 1988). The watershed The unit boundary was drawn to containing the vernal pools has been vernal pool habitats in the San Joaquin Valley (Holland 1998). Threats to include species occurrences and the breached by hundreds of acres of remaining vernal pool habitats within vernal pool complexes in which they orchards that have been planted this unit include agricultural occur as mapped by Holland (1998) and upstream. East of the Hickman vernal conversion. as visible on SPOT imagery, as well as pools, there is a large, hydrologically The unit lies north of the City of Los elevation contours in the eastern foothill intact vernal pool complex that likely Banos, southwest of the City of Merced, region and sub-watershed boundaries. contains other occurrences of Hoover’s and is bisected by the San Joaquin There are four subunits within the spurge. River. This unit represents Unit 23 for Tulare Unit. The westernmost subunit is The unit boundary was drawn to vernal pool fairy shrimp, Unit 7 for located east of J19. Road 63 cuts through include species occurrences and the Conservancy fairy shrimp, and Unit 16 its eastern edge. St. Johns River is south vernal pool complexes in which they for vernal pool tadpole shrimp. The of the subunit and the Southern Pacific occur as mapped by Holland (1998) and western half of this unit represents Unit Railroad runs northeast of the unit. The other three subunits are located east of as visible on SPOT imagery. The 8 for Colusa grass. In addition to the Road 63. The smallest subunit lies Turlock Unit is bordered by the species mentioned above, vernal pool directly east of the westernmost subunit. Tuolumne River to the north and the smallscale, alkali milk-vetch, western spadefoot toad, and California Road 201 passes through both of the Merced River to the south. The unit lies easternmost subunits. The subunit that between the towns of La Grange and linderiella are present in this unit as well. lies next to the easternmost subunit Snelling. County Road J9 runs west of contains vernal pool habitat north of the unit and the eastern edge is located Unit 7 A, B, C, and D, Tulare Unit, Stokes Mountain. In the south it is in the low elevation foothills of the Tulare County (12,375 ha (30,578 ac)) bordered by Cottonwood Creek. The Sierra Nevada. Vernal pools in the This unit is proposed as critical easternmost subunit extends into the Turlock Unit are located in Stanislaus habitat for Hoover’s spurge because it low elevation foothills of the Sierra and Merced counties. This unit supports almost 20 percent of the Nevada. Colvin Mountain is located coincides with Colusa grass Unit 6, known occurrences of the species, within its southwest boundary. Road hairy Orcutt grass Unit 5, succulent including occurrences found within 245 bisects this subunit and the south owl’s-clover Unit 3A, and vernal pool vernal pools on Lewis soils (USDA side of Red Mountain is within its fairy shrimp Unit 21. Other sensitive 2001, CNDDB 2002). This unit northeast boundary. Tulare Unit vernal pool species found within this comprises the southern extent of the coincides with San Joaquin Valley unit include California tiger salamander, range of Hoover’s spurge. Occurrences Orcutt grass Unit 7, and overlaps with Hartweg’s golden sunburst, and dwarf within this unit are more than 110 km vernal pool tadpole shrimp Unit 18 and downingia. California State Parks owns (68 mi) distant from the nearest vernal pool fairy shrimp Unit 26. Other approximately 24 ha (60 ac) within this Hoover’s spurge unit to the north. sensitive vernal pool species found unit. The remaining land within this Peripheral populations may have within this unit include the California unit is privately owned. genetic characteristics essential to tiger salamander, spiny-sepaled button- overall long-term conservation of the celery, and western spadefoot toad.

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Succulent Owl’s-clover owl’s-clover. Winter and spring grazing Unit 1, Southeast Sacramento Valley In proposing critical habitat units for may be helping in controlling non- Unit, Sacramento and San Joaquin succulent owl’s-clover we evaluated the native grass invasions (Barry 1998). Counties (1,052 ha (2,598 ac)) life history and current distribution of Stebbins et al. (1995) noted that among This unit is proposed as critical the species, the primary constituent the sites they studied, those that were habitat for succulent owl’s-clover elements, and the threats to the species. grazed ‘‘did not appear to suffer long- because it contains occurrences of the This information allowed us to term damage due to grazing.’’ Damage species living within vernal pools determine which areas are likely to from livestock would be harmful when occurring on San Joaquin soils that contribute to the conservation of this pools are dry and during the time that provide the necessary timing and length species and to delineate units so that the water is evaporating; thus summer of inundation for succulent owl’s-clover threats to this species might be or year-round grazing poses a threat germination, growth, and reproduction minimized. (Barry 1998). (Holland 1998, Sacramento County Succulent owl’s-clover is currently Hydrological alterations can create 1999, CNDDB 2002). known from 63 occurrences, of which conditions unsuitable for succulent The site is a ‘‘Nature Study Area’’ for one in Fresno County is considered to owl’s-clover and other vernal pool the UC Cooperative Extension (CNDDB be ‘‘possibly extirpated’’ (CNDDB 2002) plants by increasing or decreasing the 2001). This unit represents the northern because the site had been disced when depth and duration of inundation. most extent of succulent owl’s-clover it was last visited in 1981. Another site Threats due to alterations in natural range and is the only unit designated for in Fresno County also may be hydrology include the Merced County this species within the Sacramento extirpated. Among the areas where Stream Channel Project proposed by the Valley. The unit is isolated from other succulent owl’s-clover is known to U.S. Army Corps of Engineers succulent owl’s-clover occurrences to occur, more than half are in Merced (Corps)(Service 1997a) and proposed the south in the San Joaquin Valley by County. Additional occurrences are enlargement of Burns Reservoir in a distance of over 80 km (50 mi). found in Fresno, Madera, Stanislaus, Isolated and peripheral populations Merced County (CNDDB 2001), which and San Joaquin counties (CNDDB such as this may have genetic collectively threaten seven occurrences 2001). characteristics essential to the overall of succulent owl’s-clover. Expansion of The current status of most succulent long-term conservation of the species agricultural operations threatens three owl’s-clover populations is unknown (i.e., they may be different from more occurrences in Fresno and Madera because most sites have not been visited central populations) (Lesica and for decades. Inappropriate cattle grazing counties that are surrounded by Allendorf 1995). and trampling degraded three orchards, vineyards, or citrus groves The boundaries of this unit were occurrences of succulent owl’s-clover. (CNDDB 2001). Also, populations in delineated to include the interconnected One of the same sites plus three others grain fields already have been subject to pools, swales, and associated uplands were degraded by discing. The CNDDB discing, as mentioned above. A mapped by Holland (1998) that (2002) lists one of the latter as ‘‘possibly proposed gravel mine threatens one contribute to the filling and drying of extirpated’’ due to discing. However, occurrence in Fresno County (Service the vernal pools where the species succulent owl’s-clover persisted at 1997a). occur, and maintain suitable periods of another site that had been disced, Threats posed by small population pool inundation, water quality, and soil although the population size was size are less immediate but also moisture for succulent owl’s-clover reduced by an order of magnitude potentially significant. Random genetic, germination and reproduction. (CNDDB 2001). environmental, or other processes can This unit for succulent owl’s-clover A wide variety of factors threaten the lead to the extirpation of small occupies the area east of Galt near continued existence of succulent owl’s- populations; adequate populations Dustin and Liberty roads. All the lands clover, including urban development, would be in the range of thousands to included within this unit are privately year-round or summer livestock grazing, millions (Shaffer 1981, Thomas 1990, owned. Urban expansion and changes in hydrology, agricultural Menges 1991). Species that are subject conversion from grazing to other conversion, gravel mining, and small to extreme fluctuations in population agricultural practices, particularly population size. Construction of the size from year to year are particularly vineyards have greatly affected existing proposed new UC campus in Merced vulnerable to chance events (Thomas vernal pool habitats throughout this County, plus the associated residential 1990). Among the 24 populations of area. Other sensitive vernal pool species community and access roads, threatens succulent owl’s-clover for which size found within this unit includes the the extensive population in that area. estimates were given, 10 consisted of California tiger salamander. Different types of urban development fewer than 100 plants at their peak size that threaten numerous known Unit 2, Waterford Unit, Stanislaus and (CNDDB 2001, Stebbins in litt. 2000). occurrences include planned housing Tuolumne Counties (14,131 ha (34,917 ac)) subdivisions in Fresno, Madera, and Succulent Owl’s-Clover Unit Review San Joaquin counties; a freeway This unit is proposed as critical expansion in Madera County; and a We conducted a regional review habitat for succulent owl’s-clover proposed landfill in Fresno County across the range of succulent owl’s- because it supports occurrences of the (Service 1997, Stebbins in litt. 2000, clover to evaluate and select areas that species within hardpan vernal pools on CNDDB 2001). are essential to the conservation of the alluvial terraces on Amador and Approximately two-thirds of the species and that may require special Redding soils that provide the necessary reported occurrences, including those at management. Important factors we timing and length of inundation the UC Merced site, were subject to considered were the presence of the essential to the conservation of the cattle grazing when they were species and the primary constituent species (CNDDB 2002). This is the discovered (EIP Associates 1999, elements essential to the conservation of northernmost extent of succulent owl’s- CNDDB 2001). However, grazing is not the species. A specific description of clover’s range within the San Joaquin necessarily detrimental to succulent each area is outlined below. Valley, and is over 80 km (50 mi) from

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the isolated occurrence to the north. A majority of the land in this unit is Unit 4, Madera Unit, Madera County This unit contains a variety of pools and privately owned, and is used to graze (33,071 ha (81,717 ac)) ephemeral habitats in which the plants cattle. The integrity of the vernal pool This unit is proposed as critical are known to occur, including shallow complexes in eastern Merced is habitat for succulent owl’s-clover and deep pools and pools with both threatened by the proposed UC Merced because it supports multiple long and short inundation periods. Campus and associated development. occurrences of the species within These pools contain appropriate Succulent owl’s-clover has been found hardpan vernal pools on soils of alluvial conditions for germination, growth, in 296 vernal pools in the proposed fans and terraces, including San Joaquin reproduction, and dispersal of succulent campus and community area, although soils (CNDDB 2002). This unit is owl’s-clover. The Waterford Unit is only 34 percent of the area was important for the survival of succulent important for the survival of succulent surveyed intensively (EIP Associates owl’s-clover because it represents large owl’s-clover because it represents large 1999). Construction of facilities to areas of contiguous habitat with areas of contiguous habitat with educate and serve twenty-five thousand relatively intact hydrology. These pools relatively intact hydrology. All the lands UC students as well as faculty, staff, and are typically found in vernal pool/swale within this unit are privately owned. their families within the vernal pool complexes on mima mound topography. The unit boundary was drawn to complexes in eastern Merced County, This unit contains vernal pools and include species occurrences and the could have a major impact on the other ephemeral features and associated vernal pool complexes in which they survival and recovery of succulent watersheds that maintain suitable occur as mapped by Holland (1998) and owl’s-clover. However, the recent draft periods of pool inundation, water as visible on SPOT imagery, as well as quality, and soil moisture for succulent elevation contours in the eastern foothill biological opinion for the UC Merced campus and community developed owl’s-clover germination, growth, region and sub-watershed boundaries. reproduction, and dispersal. environmental parameters which should The Waterford Unit is bordered by the Most of the area within this unit is on reduce impacts to vernal pool habitats. Tuolumne River to the south. The private land, although a large Modesto Reservoir is adjacent to the Indirect and cumulative impacts of the population of succulent owl’s-clover southwest boundary of the unit. proposed 1,673 ha (4,133 ac) campus occurs on property acquired by the Warnerville Road cuts through the and associated community may be California Department of Transportation northern portion of the unit. The City of minimized with the creation of a 2,036 for mitigation purposes (CNDDB 2001). La Grange is located southeast of the ha (5,030 ac) preserve intended to The integrity of vernal pool complexes unit. The eastern boundary extends into protect sensitive vernal pool habitat, to and their associated watersheds in the the low elevation foothills of the Sierra be purchased with money donated by Madera Unit is threatened by Nevada. Vernal pools in the Waterford the Packard Foundation. agricultural conversion and urban Unit are located mainly in eastern The unit boundary was drawn to encroachment. Stanislaus County, but overlap into include species occurrences and the The unit boundary was drawn to western Tuolumne County. This unit vernal pool complexes in which they include species occurrences and the overlaps with San Joaquin Valley Orcutt occur as mapped by Holland (1998) and vernal pool complexes in which they grass Unit 1, hairy Orcutt grass Unit 4, as visible on SPOT imagery, as well as occur as mapped by Holland (1998) and Colusa grass Unit 4, Hoover’s spurge as visible on SPOT imagery, as well as Unit 4, and Greene’s tuctoria Unit 6. elevation contours in the eastern foothill region and sub-watershed boundaries. elevation contours in the eastern foothill Other sensitive vernal pool species region and sub-watershed boundaries. The Merced Unit is comprised of two found within this unit include Located entirely in Madera County, this subunits, Subunit A is located north of California tiger salamander, western unit contains vernal pool habitat spadefoot toad, dwarf downingia, and the Merced River, and south of Dry extending from the Chowchilla River in California linderiella. Creek. Subunit B is located south of the the north to the San Joaquin River in the Merced River and north of Mariposa south. All vernal pools in this unit are Unit 3A and B, Merced Unit, Merced Creek Both subunits are located east of County (63,352 ha (156,542 ac)) located east of State Highway 99. Land State Highway 99. Approximately 419 ownership within the unit includes 3 ha This unit is proposed as critical ha (1,048 ac) is owned by the DOD, 3 (8 ac) by BOR, 2 ha (5 ac) by NPS, 47 habitat for succulent owl’s-clover ha (8 ac) by U.S. Bureau of Reclamation ha (117 ac) by CDFG, and 9 ha (22 ac) because it supports over 50 percent of (BOR), 10 ha (26 ac) by California State by State Land Commission. The Madera the known occurrences of the species, Parks. TNC has 4,513 ha (11,283 ac) of Unit overlaps hairy Orcutt grass Units 6 living within vernal pools on Redding, easement lands within this unit. The and 7, Greene’s tuctoria Unit 8, San Corning, and Pentz soil series that remaining lands within this unit are Joaquin Valley Orcutt grass Units 4 and provide the primary constituent privately owned. The Merced Unit 5 and vernal pool fairy shrimp Unit elements essential to the conservation of overlaps with vernal pool tadpole 24A. Other sensitive vernal pool species the species (CNDDB 2002). This unit shrimp Unit 15, vernal pool fairy found within this unit include spiny- represents the largest remaining habitat shrimp Unit 22, Conservancy fairy sepaled button-celery, California tiger area for succulent owl’s-clover, and shrimp Unit 6, hairy Orcutt grass Unit salamander, western spadefoot toad and includes the largest block of pristine, 5, Hoover’s spurge Unit 5, Greene’s California linderiella. high density vernal pool grasslands tuctoria Unit 7, San Joaquin Valley remaining in California (Holland 1998, Unit 5, Fresno Unit, Fresno County Orcutt grass Units 2 and 3, and Colusa (11,888 ha (29,375 ac)) Vollmar 1999). This unit is important to grass Units 5 and 6. Other sensitive maintain a diversity of habitats for This unit is proposed as critical vernal pool species found within this succulent owl’s-clover, and supports habitat for succulent owl’s-clover unit include California linderiella, hydrologically intact vernal pool because it contains occurrences of the complexes that are likely to maintain California tiger salamander, shining species growing within vernal pools ecosystem processes important to the navarretia, dwarf downingia, and Bogg’s formed on Fallbrook, Ramona, San recovery of succulent owl’s-clover. Lake hedge-hyssop. Joaquin, Vista, and Pollasky soil series

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(CNDDB 2002). The diversity of vernal part within designated reserves, which Currently, the CNDDB (2001) includes pool types found within the Fresno Unit are on two ‘‘tabletop’’ mountains near 59 occurrences of Colusa grass; 48 contributes to the range of ecological Millerton Lake. The Sierra Foothill occurrences are presumed to be extant conditions in which succulent owl’s- Conservancy’s Big Table Mountain and 11 others are either known or clover occurs. This area represents the Preserve includes one of these presumed to be extirpated. The extant southern extent of the species range. occurrences and a portion of another, populations occur primarily in the This unit contains suitable habitat which is shared with the BLM. The foothills region of the San Joaquin within annual grassland communities to other is in the CDFG’s Big Table Valley, where 80 percent known enable the species to carry out its life- Mountain Ecological Reserve. A fourth occurrences are found northeast of the cycle. Some habitat in this unit consists occurrence, which is on a nearby city of Merced in Merced County and of typical ‘‘bowl-like’’ pools, whereas tabletop, is partially under the control of east of Hickman in Stanislaus County. other areas are more similar to swales. the BLM and partly in private Of the remaining extant occurrences, Vernal pools within this unit have been ownership. A cooperative group four are in central Merced County, and destroyed by conversion to irrigated consisting of the CDFG, California two each occur in southeastern Yolo agriculture, as well as urban Department of Parks and Recreation, and central Solano counties (Stone et al. encroachment from the cities of Fresno Sierra Foothill Conservancy, BLM and 1988, Keeler-Wolf et al. 1998, CNDDB and Clovis. BOR has developed a management and 2001). This species has been extirpated The unit boundary was drawn to monitoring plan for Big Table Mountain. from Colusa County (CNDDB 2001). include species occurrences and the Initial efforts of the plan will focus on Colusa grass declined primarily vernal pool complexes in which they grazing as a means to control non-native because pools in which it occurred were occur as mapped by Holland (1998) and grasses while comparing population destroyed by conversion to irrigated as visible on SPOT imagery. Located in trends of threatened and endangered agriculture, primarily to orchards and Fresno County, this unit contains vernal species in grazed and ungrazed portions vineyards (Crampton 1976, Medeiros pool habitat extending from the San of the tableland (Griggs in litt. 2000a). 1976, CNDDB 2002). Agricultural Joaquin River in the north to Shaw BLM owns approximately 149 ha (371 conversion continues to threaten Colusa Avenue in the south. The western ac) and CDFG owns approximately 429 grass. In eastern Stanislaus County boundary of this unit lies east of Fresno ha (172 ac) of land within this unit. TNC agricultural conversion threatens the 16 and Clovis and the eastern boundary has 256 ha (650 ac) of conservation occurrences (33 percent) there. Dry-land parallels the low elevation foothill easements within this unit. The BLM farming there is gradually being region of the Sierra Nevada. Property has attempted to protect the occurrence replaced by irrigated agriculture; the ownership and protection within this on the other tabletop mountain by former apparently is compatible with unit includes CDFG (0.4 ha (1 ac)) and erecting fencing to prevent trespass by the persistence of Colusa grass, but the CDFG administered land (0.4 ha (1 ac)). cattle (Franklin in litt. 1993). latter is not (Crampton 1959, Crampton The remainder of the property within The unit boundary was drawn to 1976). this unit is privately owned. The Fresno include species occurrences and the Unit overlaps San Joaquin Valley Orcutt vernal pool complexes in which they Other factors that extirpated grass Unit 5 and vernal pool fairy occur as mapped by Holland (1998) and populations of Colusa grass included shrimp Unit 24B. Other sensitive vernal as visible on SPOT imagery, as well as surface disturbances and degradation of pool species found within this unit elevation contours in the eastern foothill vernal pool hydrology. At least 9, and include California linderiella, California region and sub-watershed boundaries. possibly 11, occurrences have been tiger salamander, and western spadefoot Unit 6 for succulent owl’s-clover is extirpated as a result of these factors, toad. comprised of two subunits. Both although several others most likely were subunits are located east of Millerton eliminated before being reported (Stone Unit 6A and B, Table Mountain Unit, Lake on basalt mesas above the San et al. 1988). Changes in natural Fresno and Madera Counties, (1,723 ha Joaquin River. Subunit 6B is located on hydrology, such as draining pools or (4,258 ac)) Kennedy Table in Madera County, and creating reservoirs, could create This area is proposed as critical Subunit 6A is directly south of this unit unsuitable conditions for Colusa grass habitat for succulent owl’s-clover across the San Joaquin River on Table by decreasing or increasing inundation because it supports occurrences of the Mountain in Fresno County. The Table periods. The two Yolo County species within Northern Basalt Flow Mountain Rancheria is south of this occurrences are threatened by herbicide vernal pools (CNDDB 2002). This is the unit. Unit 6 coincides with vernal pool run-off from adjacent agricultural only area where succulent owl’s-clover fairy shrimp Unit 25, vernal pool operations (CNDDB 2002). is found on this vernal pool type. tadpole shrimp Unit 17, and San Additional factors threaten the Northern Basalt Flow pool complexes, Joaquin Valley Orcutt grass units 6A survival of Colusa grass, particularly the such as Table Mountain, are extremely and 6B. Other sensitive vernal pool problem of small population size. rare, occurring only on ancient terraces species found within this unit include Although populations may drop to only and hilltops. Basalt tables are perched Bogg’s lake hedge-hyssop and California a few visible plants in certain years, on narrow, sinuous basalt mesas above linderiella. seven populations consisted of fewer the surrounding low-lying terrain. They than 100 plants even at their peak typically contain small, irregularly Colusa Grass Criteria (CNDDB 2002) and thus are likely to be clustered pools with ‘‘flashy hydrology’’ In proposing critical habitat units for small populations. Non-native plants (Keeler-Wolf et al. 1998). They are less Colusa grass, we evaluated the life and invasive native species could common than hardpan and claypan history and current distribution of the invade Colusa grass occurrences and pools that are typically found in this species, the primary constituent may be particular problems in region, and occur in complexes that are elements, and the current threats to the combination with other factors such as less dense than habitat in units further species. This information allowed us to decreased inundation and inappropriate north. determine which areas are most likely to livestock grazing (Stone et al. 1988, Three occurrences of succulent owl’s- contribute to the conservation of Colusa Witham in litt. 2000a). Grasshopper clover within this unit are wholly or in grass. foraging has been observed on Colusa

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grass (Stone et al. 1988), but the extent occur. The pools, swales, and adjacent tiger salamander, alkali milk-vetch, of this threat is unknown. uplands that comprise this complex are Bogg’s Lake hedge-hyssop, legenere, essential to maintain the necessary California linderiella, and midvalley Colusa Grass Unit Review timing and length of pool inundation for fairy shrimp. We conducted a regional review Colusa grass germination, growth, Unit 3, Farmington Unit, Stanislaus across the range of Colusa grass to pollination, seed production, and County (16,475 ha (40,709 ac) evaluate and select areas that are dispersal. This unit includes one of the essential to the conservation of the largest contiguous areas of habitat This unit was identified as critical for species and that may require special remaining for the species. The relatively Colusa grass because the species is management. Important factors we undisturbed, hydrologically intact found (CNDDB 2002) within vernal considered were the presence of the condition of the vernal pool habitats pools on high terrace landforms and species and the presence of the primary within this unit increase the likelihood Redding-Pentz-Peters soil complexes constituent elements essential to the that it will continue to support natural (USDA 2001). The impermeable layers conservation of the species. A specific vernal pool ecosystem processes and underlying these occupied vernal pools description of each area is outlined maintain suitable habitat conditions for are generally iron-silica cemented below. Colusa grass. hardpan. The Farmington Unit contains This unit includes the Jepson Prairie pools, swales, and other ephemeral Unit 1, Davis Communications Annex Preserve (623 ha (1,558 ac), jointly wetlands and depressions of appropriate and Grasslands Area Unit, Yolo County managed by the Solano County sizes and depths and the adjacent (192 ha (474 ac)) Farmlands and Open Space and the UC upland margins of these depressions This unit is proposed as critical for Reserve System. Jepson Prairie contains that sustain Colusa grass germination, Colusa grass because it contains one of large playa-like vernal pools which may growth, and reproduction. Habitat in six areas where the species is known to be over several acres in size, including this unit includes deeper pools that are occur (CNDDB 2002, Yolo County Parks the 32 ha (80 ac) Olcott Lake. These most likely to provide the long 2001, EIP Associates 2001) within large larger pools often occur in complexes inundation period required for vernal playa pools of the Pescadero soil with smaller pools and hogwallow germination of Colusa grass (EIP series (Holland 1998, USDA 2001, Yolo depressions. Jepson Prairie has long Associates 1999). This unit is isolated County 1995). been recognized as an outstanding from the other Colusa grass units to the The unit boundary was drawn to example of vernal pool ecosystems. In north by over 80 km (50 mi). include the vernal pool complex 1987, the NPS named Jepson Prairie a The Farmington unit is located in mapped by Holland (1998) and Yolo National Natural Landmark, a northeast Stanislaus County. It is County Parks (2001) where Colusa grass designation given to well preserved sites hydrologically separated from units to is known to occur. This vernal pool that illustrate a particular type of the south by the Stanislaus River. The complex maintains suitable periods of natural feature and provide high quality eastern boundary generally parallels the pool inundation, water quality, and soil habitat for threatened or endangered Calaveras County Line. Woodward moisture for Colusa grass germination, species. Jepson Prairie is the target of Reservoir and the town of Oakdale are growth and reproduction, and dispersal, ongoing conservation planning and all located outside and to the west of the but not necessarily every year. Colusa active management. As part of the UC unit. The unit is generally south of State grass in this unit is threatened by Reserve System, this area also provides Highway 4 and north of State Highway altered hydrology, contamination, critical research opportunities for 108. The unit boundary was drawn to competition with invasive plant species, scientists to study vernal pool species, include these species occurrences and and surface disturbances such as including Colusa grass. The unit also the vernal pool complexes in which discing. contains lands totaling 248 ha (620 ac) they occur as mapped by Holland (1998) This unit is located southeast of the owned and approximately 64 ha (161 and as visible on SPOT imagery. Lands City of Davis and south of the South ac) administered by CDFG. Additional within this unit are privately owned. Fork of Putah Creek. This unit’s western lands are owned by DOD (93 ha (233 Unit 4, Waterford Unit, Stanislaus and boundary coincides with the Solano and ac)), and the State Land Commission (7 Tuolumne Counties (35,134 ha (86,814 Yolo county line. This unit also ha (17 ac)), with another 436 ha (1,090 ac)) represents Unit 1 for Solano grass, and ac) of private land protected under WRP is a portion of Unit 10 for vernal pool easements or agreements. Within the The Waterford Unit was identified as tadpole shrimp. The unit contains land greater Jepson Prairie grassland area, critical habitat for Colusa grass because owned by Yolo County. Approximately existing vernal pools are threatened by it contains large occurrences of Colusa 128 ha (322 ac) is owned by the DOD. agricultural conversion, landfill grass. Approximately one-fifth of all expansion, power plant construction, extant occurrences are found within this Unit 2, Jepson Prairie Unit, Solano and utility maintenance. unit (CNDDB 2002). These occurrences County (7,153 ha (17,675 ac)) This unit is situated east of the City are found within vernal pools formed on This unit is proposed as critical for of Fairfield, south of the City of Dixon, alluvial terraces and associated Whitney Colusa grass because it supports the and north of the Montezuma Hills and soils, among others. These pool types species (CNDDB 2002) within large, the confluence of the Sacramento and provide the necessary timing and length alkaline, playa type vernal pools San Joaquin rivers. This unit is also of inundation for Colusa grass to (Holland 1998, USDA 2001, Solano described as Unit 2 for Solano grass. germinate, mature, and set seed. The County 2000, Solano County Farmlands This unit is encompassed by Unit 3 for Waterford Unit contains very large and Open Space 2000). These pools Conservancy fairy shrimp, Unit 11 for vernal pool complexes that will likely occur on Pescadero and Antioch-San vernal pool tadpole shrimp, and Unit 16 continue to support vernal pool Ysidro soil series, and contribute to the for vernal pool fairy shrimp. This unit ecosystem processes important to the diversity of vernal pool types where the also supports a diverse community of conservation of Colusa grass. This unit species is found. The unit boundary was plants and animals, including the only contains vernal pools, swales, and other drawn to include the vernal pool known occurrence of delta green ground ephemeral wetlands and depressions of complex where Colusa grass is known to beetle, and occurrences of California appropriate sizes and depths and the

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adjacent upland margins of these deeper pools that are more likely to conservation easement on the Flying M depressions that sustain Colusa grass provide the long inundation period Ranch located northeast of the City of germination, growth and reproduction, required for germination. Merced. The integrity of the vernal pool and that typically become inundated The watershed containing the complexes in eastern Merced is during winter rains, including, but not Hickman Colusa grass occurrences has seriously threatened by irrigated limited to vernal pools formed on acidic been breached by hundreds of acres of agriculture, upland housing soils of alluvial fans and stream terraces orchards that have been planted development, and the proposed UC along the eastern margin of the San upstream. While most of the watershed Merced Campus and associated Joaquin Valley and into the adjacent has been managed over the years in a development. Construction of facilities foothills. trust of the Fred Robinson family, the to educate and serve 25,000 UC students Agricultural conversion has resulted integrity of the vernal pool ecosystem is as well as faculty, staff, and their in the extirpation of at least two threatened by agricultural development families within the vernal pool documented Colusa grass occurrences in and potential biocide pollution complexes in eastern Merced County, this unit. Although Colusa grass has the (Medeiros 2000). Much of the irrigated could have a major impact on these ability to persist with dry-land farming, farmland habitat adjacent to the western vernal pools. However, the recent draft dry-land farming is gradually being edge of this unit was historically vernal biological opinion for the UC Merced replaced by irrigated agriculture wetlands. Intensive agriculture poses campus and community developed throughout this unit. the largest threat to Colusa grass habitat environmental parameters which should The Waterford Unit is bordered by the in the Turlock Unit. reduce impacts to vernal pool habitats. Stanislaus River to the north and the The unit boundary was drawn to Indirect and cumulative impacts of the Tuolumne River to the south. The City include species occurrences and the proposed 1,673 ha (4,133 ac) campus of La Grange is located southeast of this vernal pool complexes in which they and associated community may be unit. County Road J9 runs west of the occur as mapped by Holland (1998) and minimized with the creation of a 2,036 unit, and Oakdale is located outside of as visible on SPOT imagery. The ha (5,030 ac) preserve intended to the northwest corner. The eastern Turlock Unit is bordered by the protect sensitive vernal pool habitat, to boundary extends into the low elevation Tuolumne River to the north and the be purchased with money donated by foothills of the Sierra Nevada. Vernal Merced River to the south. The unit lies the Packard Foundation. pools in the Waterford Unit are mainly between the towns of La Grange and The unit boundary was drawn to located in eastern Stanislaus County, Snelling. County Road J9 runs west of include species occurrences and the but overlap into southwestern the unit and the eastern edge is located vernal pool complexes in which they Tuolumne county. Approximately 0.8 in the low elevation foothills of the occur as mapped by Holland (1998) and ha (2 ac) of this unit are lands Sierra Nevada. Vernal pools in the as visible on SPOT imagery. A majority administered by the CDFG. The unit Turlock Unit are located in Stanislaus of the vernal pool habitat in the Merced boundary was drawn to include species and Merced counties. Approximately 61 Unit is in Merced County, although the occurrences and the vernal pool ha (24 ac) of lands within this unit are eastern edge of the unit overlaps into complexes in which they occur as owned by the California State Parks. Mariposa County in the low elevation mapped by Holland (1998) and as This unit coincides with hairy Orcutt foothills of the Sierra Nevada. The visible on SPOT imagery. Watershed grass Unit 5. Portions of this unit northern boundary parallels the Merced boundaries were also used in the overlap with Hoover’s spurge Unit 5, River, and Bear Creek serves as the determination. This unit coincides with vernal pool fairy shrimp Unit 21, and southern border. The entire unit is Hoover’s spurge Unit 4, San Joaquin succulent owl’s-clover Unit 3A. located east of Highway 99. Valley Orcutt grass Unit 1, and hairy Unit 6, Merced Unit, Merced and Approximately 419 ha (1,047 ac) of Orcutt grass Unit 4. It overlaps with lands within this unit are owned by the Mariposa Counties (45,641 ha (112,779 Greene’s tuctoria Unit 5, succulent USAF, 3 ha (8 ac) by BLM, and 10 ha ac)) owl’s-clover Unit 2, and vernal pool (26 ac) by the California State Parks. The tadpole shrimp Unit 13. This unit is proposed as critical for Merced Unit coincides with San Joaquin Colusa grass because it contains over 40 Valley Orcutt grass Unit 2, Conservancy Unit 5, Turlock Unit, Stanislaus and percent of all known Colusa grass Merced Counties (19,850 ha (49,049 ac)) fairy shrimp Unit 6, vernal pool fairy occurrences (CNDDB 2002). This unit shrimp Unit 22, and Hoover’s spurge This unit is proposed as critical also contains a diversity of habitats for Unit 6. It overlaps with vernal pool habitat for Colusa grass because it Colusa grass, including the only tadpole shrimp Unit 15, Greene’s supports large, playa vernal pools where locations where this species is known to tuctoria Unit 6, and succulent owl’s- the species is found (CNDDB 2002, occur on Keyes-Pentz, Redding, and clover Unit 3B. Holland 1998). The well-known Keyes soils (USDA 2001). Although Hickman pools in Stanislaus County are many populations of Colusa grass have Unit 7A and B, Grassland Ecological located within this unit. These unusual been extirpated in the past two decades, Unit, Madera, Merced and Stanislaus pools provide a unique habitat for populations in the Merced Unit are Counties (8,163 ha (20,170 ac)) Colusa grass, as well as a number of among the most robust remaining This unit is proposed as critical other vernal pool species. Not only does (Holland 2000). The area within this habitat for Colusa grass because it the Hickman pool complex contain one unit encompasses the largest block of contains vernal pools that support of the largest vernal lakes in California, pristine, high density vernal pool numerous occurrences of the species, occupying more than 121 ha (300 ac), grasslands remaining in California including the only location where but it also exhibits tremendous (Vollmar 1999). It contains habitat for Colusa grass is found on clay or silty biodiversity, including one of the largest three listed branchiopods, six listed clay loam soils in the Landlow and concentrations of imperiled amphibians plants, and a number of rare species. Lewis series (Silveira in litt. 2000). The (Medeiros 2000). Other habitat in this The majority of the land in this unit unit boundary was drawn to include unit contains the primary constituent is privately owned and is used to graze these pool types, swales and associated elements essential to the conservation of cattle. TNC is conserving three uplands that comprise the vernal pool Colusa grass, including soil type and occurrences of Colusa grass through a complexes mapped by Holland (1998)

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where Colusa grass is known to occur. 2001). Greene’s tuctoria is currently Finally, small populations of Greene’s These vernal pool complexes maintain known from the Vina Plains area of tuctoria (fewer than 100 plants) may suitable periods of pool inundation, Tehama and Butte counties, from limit persistence of several occurrences. water quality, and soil moisture for portions of eastern Merced County, and One population in Merced County Colusa grass germination, growth and from isolated occurrences in Glenn and consisted of only a single plant in 1987, reproduction, and dispersal, but not Shasta counties (CNDDB 2001). The and one in Butte County contained 75 necessarily every year (CNDDB 2001). species is considered possibly plants (Stone et al. 1988, CNDDB 2001). Remaining vernal pool complexes in extirpated from Fresno, Madera, San The Shasta County population also may this unit, particularly in the eastern Joaquin, Stanislaus, and Tulare counties have declined to the point where it is subunit, have been fragmented by (Stone et al. 1988, Skinner and Pavlik more vulnerable to extirpation by conversion to agriculture. These areas 1994, CNDDB 2001). The areas that random events, such as fire, or by other were historically interconnected vernal continue to support robust occurrences threats as previously discussed; the pool complexes, and current efforts are of the species include the Vina Plains Shasta County population consisted of underway to restore wetland habitats in area of Tehama and Butte counties, and 2,500 plants in 1993 and 1994, but this area. an area in eastern Merced County. All declined to 120 in 1996 and 35 in 1998 The Grassland Ecological Unit other occurrences are considered despite favorable hydrological includes Arena Plains and the Merced declining and may require special conditions. However, additional National Wildlife Refuges. We own and management actions to ensure their investigation of all four populations is administer approximately 1,406 ha long-term conservation. necessary to determine whether or not (3,514 ac) within this unit. Our One of the primary causes of larger soil seed banks exist. personnel have been monitoring Colusa extirpation for Greene’s tuctoria has Greene’s Tuctoria Unit Review grass occurrences on National Wildlife been conversion to irrigated agriculture; We conducted a regional review Refuge lands within this unit annually 11 of 19 (57.9 percent) extirpated across the range of Greene’s tuctoria to since 1993. This Arena Plains and occurrences were due at least in part to evaluate and select areas that are Merced NWR area contains the majority agricultural conversions. Stanislaus and essential to the conservation of the of vernal pool habitats remaining in the Fresno counties experienced the greatest species and that may require special San Joaquin Valley and is the only loss to agricultural conversion, with location where Colusa grass occurs on management. Important factors we four and three such extirpations, considered were the known presence of the San Joaquin Valley floor. Threats to respectively. Excessive livestock grazing the vernal pools in this unit include the species and the presence of the was the sole or partial cause of agricultural conversion, changes in primary constituent elements essential extirpation for six populations (31.6 hydrology, invasion by aggressive to the conservation of the species. A percent) (Stone et al. 1988, CNDDB plants, and inappropriate livestock specific description of each area is 2002). grazing regimes. outlined below. The unit lies north of the City of Los Greene’s tuctoria is less tolerant of Unit 1, Modoc Plateau Unit, Lassen, and Banos, southwest of the City of Merced, livestock grazing and competition than Shasta Counties (973 ha (2,403 ac)) and is bisected by the San Joaquin most of the other Orcuttieae, probably River. This unit overlaps Unit 23 for because it occurs in portions of pools This unit is proposed as critical vernal pool fairy shrimp and Unit 16 for that dry early in the spring. Anecdotal habitat for Greene’s tuctoria because it vernal pool tadpole shrimp. The evidence of its lower tolerance to contains the species within Northern western half of this unit also represents grazing is that Greene’s tuctoria has Basalt Flow vernal pools (CNDDB 2002) Unit 6 for Hoover’s spurge, and portions disappeared from one grazed site where and the vernal pool habitat remains of Unit 7 for Conservancy fairy shrimp. Hoover’s spurge still occurs and from inundated for sufficient periods of time In addition to the species mentioned another site where Colusa grass remains to allow Greene’s tuctoria to complete above, vernal pool smallscale, alkali (CNDDB 2002). Fifteen of the 20 its life cycle. These areas are not milk-vetch, western spadefoot toad, and remaining populations are subject to threatened by land conversion or California linderiella are present in this cattle grazing and the associated development at this time due to their unit trampling, and at least 4 of those are remote location, however, grazing declining (Stone et al. 1988, CNDDB activities may be contributing to the Greene’s Tuctoria 2001). Four other occurrences on the species decline in this area and may In proposing critical habitat units for Vina Plains Preserve had been declining require special management actions, Greene’s tuctoria, we evaluated the life (Stone et al. 1988, CNDDB 2001), but such as reduction or elimination of history and current distribution of the improved after grazing was grazing, to prevent further decline and species, the primary constituent discontinued. Invasion from weedy possible extirpation of the occurrence elements, and the current threats to the plants, such as cocklebur (Xanthium within this unit (CNDDB 2001). species. This information allowed us to sp.) and other non-native species, Greene’s tuctoria within this unit are determine which areas are most likely to apparently is reducing population vigor located within an area described as a contribute to the conservation of this at six localities in the Sacramento and large vernal pool in an open flat in an species and to delineate units so that San Joaquin valleys (Stone et al. 1988, eastside pine forest. The occurrence is threats to this species might be Alexander in litt. 1998, CNDDB 2001). located at higher elevations and has the minimized. Agricultural conversion remains a threat coldest climatic conditions of any other Since Greene’s tuctoria was first to the Merced County populations, occurrences and represents the northern described, 19 of the 39 known which are the only ones confirmed to be extent of the species range. This unit is occurrences (50 percent of all remaining in the San Joaquin Valley. over 110 km (68 mi) disjunct from occurrences) have been extirpated. The Grasshoppers have been documented to occurrences further south. Isolated and other 20 occurrences are presumed to be consume entire populations of Greene’s peripheral populations such as this may extant, although 6 of those have not tuctoria before they set seed (Griggs be essential to the overall long-term been verified for more than a decade 1980, Griggs and Jain 1983, Stone et al. conservation of the species (i.e., may be (Alexander and Schlising 1997, CNDDB 1988). genetically different from other

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populations in other parts of its range) The majority of the lands included Unit 3, Butte Unit, Butte County (979 ha (Lesica and Allendorf 1995). within this unit are privately owned. (2,418 ac)) The boundaries of this unit were This unit contains TNC’s 1,862 ha This unit is proposed as critical delineated by using SPOT imagery and (4,600 ac) Vina Plains preserve. The habitat for Greene’s tuctoria because it elevation contours to include the open preserve contains over 300 species of supports the species within large vernal flat area associated with the vernal pool plants, and diverse communities of pools on Tuscan soils (EPA 1994, including the adjacent uplands that aquatic invertebrates. Since the 1960’s, Holland 1998, CNDDB 2002). These contribute to the filling and drying of the Vina Plains area has been the focus pools have the necessary timing and the vernal pool where Greene’s tuctoria of a number of research projects, length of inundation for Greene’s occur, and maintain suitable periods of including long-term adaptive tuctoria germination, growth, and pool inundation, water quality, and soil management and monitoring efforts moisture for Greene’s tuctoria to reproduction that typically become evaluating of the effects of grazing and germinate and reproduce. inundated during winter rains, but are Approximately 892 ha (2,231 ac) of this fire on vernal pool plants, including dry during the summer. This occurrence unit is owned by the USFS. The Greene’s tuctoria (Griggs 2000). Much of may be threatened by overgrazing, and remaining lands within this unit are the basic life history information known is described as ‘‘possibly declining’’ by privately owned. about Greene’s tuctoria was collected at CNDDB (2002). This unit for Greene’s tuctoria occurs Vina Plains (e.g., Stone et al. 1988, Vernal pool habitats within this area within the volcanic plateau of Alexander and Schlising 1997). The have become greatly fragmented and northeastern California. The unit is results of this research have provided isolated from other habitats in the located in the area surrounding Murken crucial information to guide region. This area is one of only four Lake east of Hat Creek near Cinder management and monitoring of vernal areas occupied by Greene’s tuctoria in Butte. Bidwell Road crosses through the pool ecosystems and to identify factors the Sacramento Valley. This area is southern boundary. This is the only unit which influence population dynamics important to maintain the geographical where Greene’s tuctoria occupies of a number of endangered species, distribution of Greene’s tuctoria through Northern Basalt Flow vernal pools. including Greene’s tuctoria. The Vina out the areas where it occurs. The Maintaining this ecologically distinct Plains is open to the public and boundaries of this unit were delineated unit is essential to the conservation of provides excellent outreach and to include the interconnected pools, swales, and associated uplands mapped the species because it is the northern educational opportunities. In addition by Holland (1998) that contribute to the extent of its range, and is essential to to TNC, the importance of vernal pool filling and drying of the vernal pools maintain the diversity of habitats in habitats in this area has been recognized where the species occur, and maintain which Greene’s tuctoria is known to by CDFG, the Service, the EPA, the occur. suitable periods of pool inundation, CNPS, the NRCS’s WRP, and by water quality, and soil moisture for Unit 2, Vina Unit, Tehama and Butte researchers at the CSU at Chico, who Greene’s tuctoria germination and Counties (11,673 ha (28,845 ac)) have all supported research and reproduction. This unit is proposed as critical conservation efforts for Greene’s tuctoria This unit for Greene’s tuctoria habitat for Greene’s tuctoria because it and other vernal pool species within occupies the area north of the contains occurrences of the species this unit. Urban development north of intersection of State Route 99 and Route within vernal pools (CNDDB 2002) and Chico and the conversion of grazed 149 in Butte County. The eastern the vernal pool habitat remains lands to more intensive agricultural uses boundary extends up the watershed of inundated for sufficient periods of time threaten vernal pool habitat within this Clear Creek and the western boundary to allow Greene’s tuctoria to complete unit. Property ownership and protection extends south paralleling State Route 99 its life cycle. This unit is proposed as within this unit includes CDFG (0.4 ha to Little Dry Creek. This unit is within critical for Greene’s tuctoria because it (1 ac)), CDFG administration (0.4 ha (1 Unit 9 for vernal pool fairy shrimp and includes 60 percent of the occurrences ac)), TNC (2,295 ha (5,738 ac)), TNC Unit 4 for vernal pool tadpole shrimp, that are thought to be extant (CNDDB easements (4,661 ha (11,653)), and WRP and coincides with Unit 2 for hairy 2001). Greene’s tuctoria occurs within easements and agreements (57 ha, 142 Orcutt grass and Unit 2 for Hoover’s vernal pools found on Anita and Tuscan ac)). spurge. All the property within this unit soil series within this unit. These pool This unit for Greene’s tuctoria is privately owned. types maintain the necessary timing and occupies the area south of Toomes length of inundation for Greene’s Unit 4, Richvale Unit, Butte County (299 Creek, and north of Pine Creek and the tuctoria germination, growth, and ha (738 ac)) Cana Highway. State Route 99 bisects reproduction (CNDDB 2002). This unit This unit is proposed as critical this unit and the western boundary represents one of only two areas habitat for Greene’s tuctoria because it throughout the species range where generally parallels the Southern Pacific contains occurrences of the species Greene’s tuctoria occurrences are not Railway line. This unit is within Unit 7 within vernal pools found on Rocklin considered to be declining (CNDDB for vernal pool fairy shrimp and Unit 3 and San Joaquin soils (CNDDB 2002) 2001). for vernal pool tadpole shrimp, and and the vernal pool habitat remains The boundaries of this unit were encompasses part of Unit 1 for inundated for sufficient periods of time delineated to include the interconnected Conservancy fairy shrimp and Unit 1 for to allow Greene’s tuctoria to complete pools, swales, and associated uplands Butte County meadowfoam. The unit its life cycle. This is the only area where mapped by Holland (1998) that coincides with Unit 1 for hairy Orcutt Greene’s tuctoria is found in vernal contribute to the filling and drying of grass, and Unit 4 for slender Orcutt pools formed on these soil types. the vernal pools where the species grass and portions of Unit 1 for Hoover’s The boundaries of this unit were occur, and maintain suitable periods of spurge. Additional sensitive vernal pool delineated to include the interconnected pool inundation, water quality, and soil species occurring in this unit include pools, swales, and associated uplands moisture for Greene’s tuctoria California linderiella and Bogg’s Lake mapped by Holland (1998) that germination and reproduction. hedge-hyssop. contribute to the filling and drying of

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the vernal pools where the species palmate-bracted bird’s beak. This unit is salamander, western spadefoot toad, occur, and maintain suitable periods of also part of vernal pool fairy shrimp dwarf downingia, and California pool inundation, water quality, and soil Unit 10, and vernal pool tadpole shrimp linderiella. Approximately 0.8 ha (2 ac) moisture for Greene’s tuctoria Unit 5, and coincides with Unit 2 for of this unit is administered by the germination and reproduction. Conservancy fairy shrimp, Unit 3 for CDFG. The remaining lands within this Vernal pool habitats within this area Hairy Orcutt grass, and Unit 3 for unit are privately owned. have become greatly fragmented and Hoover’s spurge. isolated from other habitats. This unit is Unit 7, Merced Unit, Merced, Madera, over 200 km (120 mi) from the nearest Unit 6, Waterford Unit, Stanislaus and and Mariposa Counties (73,707 ha Greene’s tuctoria occurrences to the Tuolumne Counties (36,414 ha (89,978 (182,127 ac)) south. This occurrence of Greene’s ac)) This unit is proposed as critical for tuctoria helps to maintain the species This unit is proposed as critical Greene’s tuctoria because it contains range in the Sacramento Valley. This habitat for Greene’s tuctoria because it numerous occurrences of the species unit for Greene’s tuctoria occupies the supports occurrences of the species within large, hydrologically intact area west of the Thermalito Afterbay within vernal pools and swales that vernal pool grassland areas (Holland near the Richvale Highway and directly maintain the necessary primary 1998, Vollmar 1999), including pools west of the Oroville Wildlife Area constituent elements essential for its Northern Hardpan vernal pools on managed by CDFG (4 ha (9ac)). The conservation, including the only vernal Redding, Raynor, and Bear Creek soils remaining property within this unit is pools where Greene’s tuctoria is known (USDA 2001, EIP 1999). Over 30 percent privately owned. to occur on slightly alkaline soils of the of the extant occurrences of Greene’s Meikle and Paulsell series (CNDDB tuctoria are in the Merced Unit (CNDDB Unit 5, Sacramento National Wildlife 2002, Holland 1998, USDA 2001). This 2001). This unit contains the primary Refuge Unit, Glenn and Colusa Counties unit contains numerous pools with constituent elements necessary for (5,718 ha (14,129 ac)) occurrences and associated watersheds conservation of the species including This unit is proposed as critical for that contribute to the filling and drying germination, growth, reproduction, and Greene’s tuctoria because it contains of the vernal pool or ephemeral dispersal. This unit represents one of occurrences of the species within vernal wetland, and that maintain suitable only two areas throughout the species pools that provide the necessary timing periods of pool inundation, water range where Greene’s tuctoria and length of inundation essential to the quality, and soil moisture for the occurrences are not considered to be conservation of Greene’s tuctoria, germination, growth, reproduction, and declining (CNDDB 2001). including alkaline vernal pools on dispersal of Greene’s tuctoria. Agricultural conversion presents a Willows soils (Silveira 2000). Greene’s Agricultural conversion presents the great threat to habitat for Greene’s tuctoria has been declining within this greatest threat to habitat for Greene’s tuctoria, particularly in areas along the unit and we have taken management tuctoria in this unit, and several western edge of this unit on the valley actions to prevent extirpation of the occurrences within this unit have been floor where irrigated agriculture has species from the refuge lands (Silveira extirpated or have severely declined as encroached on lands adjacent to 2000). a result of agricultural conversion and occupied vernal pool complexes. The This area is one of only four areas intensive grazing (CNDDB 2002). This proposed UC Merced Campus and occupied by Greene’s tuctoria in the unit is over 200 km (120 mi) from the associated development will also have a Sacramento Valley. This occurrence is nearest Greene’s tuctoria occurrences to significant impact on the long-term important to maintain the geographical the north. All occurrences in this unit sustainability of vernal pool complexes. distribution of Greene’s tuctoria into the are on private lands. Other significant threats to Greene’s unique alkali flat habitats of the Colusa The unit boundary was drawn to tuctoria include urban encroachment Basin. The boundaries of this unit were include species occurrences and the and competition with non-native plants. delineated to include the interconnected vernal pool complexes in which they The unit boundary was drawn to pools, swales, and associated uplands occur as mapped by Holland (1998) and include species occurrences and the mapped by Holland (1998) that as visible on SPOT imagery, as well as vernal pool complexes in which they contribute to the filling and drying of elevation contours in the eastern foothill occur as mapped by Holland (1998) and the vernal pools where the species region and sub-watershed boundaries. as visible on SPOT imagery. A majority occur, and maintain suitable periods of The Waterford Unit is bordered by the of the vernal pool habitat in the Merced pool inundation, water quality, and soil Stanislaus River to the north and the Unit is in Merced County. The eastern moisture for Greene’s tuctoria Tuolumne River to the south. The City edge of the unit overlaps into Mariposa germination and reproduction. of La Grange is located southeast of the County and in the south it extends to This unit occurs predominantly on unit. County Road J9 runs west of the the Chowchilla River in Madera County. the Sacramento National Wildlife unit, and the Oakdale Airport is located The northern boundary parallels the Refuge (5,126 ha (12,816 ac)). It is the outside of the northwest corner. The Merced River. The entire unit is located only known location where Greene’s eastern boundary extends into the low east of Highway 99. The Merced Unit tuctoria occurs on public land. It occurs elevation foothills of the Sierra Nevada. coincides with vernal pool tadpole east of Interstate 5 to the Colusa Trough Vernal pools in the Waterford Unit are shrimp Unit 15 and vernal pool fairy from Riz Road on the north and Delevan located mainly in eastern Stanislaus shrimp Unit 22. It also encompasses Road on the south. Other rare vernal County, but overlap into southwestern hairy Orcutt grass Unit 6, succulent pool species found in the unit include Tuolumne County. This unit overlaps owl’s-clover units 3B and 4, San Joaquin pappose spikeweed, Fremont’s with vernal pool tadpole shrimp Unit Valley Orcutt grass units 2 and 3, Colusa goldfields, alkali goldfields, Scribe’s 13, San Joaquin Valley Orcutt grass Unit grass Unit 7, and Conservancy fairy popcorn flower, Hoover’s downingia, 1, hairy Orcutt grass Unit 4, Colusa grass shrimp Unit 6. Other sensitive vernal folded downingia, Heckard’s Unit 5, Hoover’s spurge Unit 4, and pool species found within this unit peppergrass, heartscale, brittlescale, San succulent owl’s-clover Unit 2. Other include the California tiger salamander, Joaquin spearscale, Ferris’ milk-vetch, sensitive vernal pool species found shining navarretia, dwarf downingia, spike-primrose, sessile mousetail, and within this unit include California tiger Bogg’s Lake hedge-hyssop, western

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spadefoot toad, and California Hairy Orcutt Grass setting seed due to flooding from a linderiella. Approximately 419 ha In proposing critical habitat units for summer rainstorm, and none have been (1,048 ac) is owned by the DOD, 3 ha hairy Orcutt grass, we evaluated the life seen since that time (Silveira in litt. (4 ac) by BLM, 10 ha (26 ac) by history and current distribution of the 2000). The population could reappear in California State Parks. TNC has 4,513 ha species, the primary constituent future years if a substantial soil seed (11,283 ac) of easement lands within elements, and the current threats to the bank exists, and thus it is presumed to this unit. The remaining lands within species. This information allowed us to be extant. Habitat loss continues to pose a threat this unit are privately owned. determine which areas are likely to to the survival of hairy Orcutt grass. contribute to the conservation of hairy Unit 8, Madera Unit, Madera County Agricultural and residential Orcutt grass. (13,222 ha (32,670 ac)) development are proceeding in the Of the 38 hairy Orcutt grass element This unit is proposed as critical vicinity of the remaining Stanislaus and occurrences listed by the CNDDB habitat for Greene’s tuctoria because the Madera county occurrences and may (2001), not counting the misidentified area supports occurrences of the species lead to the destruction of additional population of San Joaquin Valley Orcutt (CNDDB 2002). This occurrence populations in the foreseeable future grass, 24 are presumed to be extant. represents the southern extent of the (Stone et al. 1988). Cattle grazing was an Nineteen of those occurrences have species currently known range. All ongoing land use at 20 occurrences been confirmed as extant within the other historical or previously when they were last visited, including documented occurrences to the south in past decade (CNDDB 2001). Currently, 6 where this species may already be Fresno and Tulare counties are the main area of concentration for hairy extirpated (CNDDB 2002). Three considered extirpated (CNDDB 2002). Orcutt grass is the Vina Plains area in occurrences are believed to have been Although this site is considered Tehama County. An isolated occurrence eliminated by ‘‘excessive’’ livestock possibly extirpated, it is proposed as is found nearby in central Butte County. grazing, and seven others were damaged critical habitat until a determination of Several other occurrences are found in by summer grazing or overuse. the current status of the occurrence can Madera County between the city of However, ‘‘moderate’’ grazing in spring be made. Greene’s tuctoria has a highly Madera and Millerton Lake. There are likely is compatible (Stone et al. 1988) persistent soil seed bank, and it is likely several occurrences in eastern and may be beneficial. Invasion of non- that individuals exist in the soil as seeds Stanislaus County. All four extant native plants is an increasing problem even if adult plants have not been occurrences in Glenn County occur on throughout the range of hairy Orcutt observed at the site in recent times. This the Sacramento National Wildlife grass (Stone et al. 1988). Several unit contains areas that support vernal Refuge. Hairy Orcutt grass apparently researchers (Stone et al. 1988, pools, swales, or other ephemeral ponds has been extirpated from Merced Alexander and Schlising 1997) have and depressions and their associated County (Stone et al. 1988, Keeler-Wolf suggested that cattle may have carried in uplands. There are numerous wetland et al. 1998, CNDDB 2001). seeds of non-native plants, and features that contain suitable inundation Historically, habitat loss was the disturbance from trampling may have periods for Greene’s tuctoria to primary factor responsible for the facilitated their establishment. germinate, grow, and reproduce. Vernal decline of hairy Orcutt grass. Of the 11 Bindweed (Convolvulus sp.) has pools and their associated biota, element occurrences considered by the increased in frequency in the Vina particularly on the western edge of this CNDDB (2002) to be extirpated, 4 in Plains since 1984, and cocklebur is still unit closer to the valley floor, are Stanislaus County were converted to present. Pools where hairy Orcutt grass progressively being degraded and almond orchards or vineyards (Stone et grows had higher frequencies of these replaced by irrigated agriculture and al. 1988, CNDDB 2002). Most of the invasive species than did other pools on invasive plant species. conversion occurred prior to 1976 the Vina Plains Preserve in 1995 and The unit boundary was drawn to (Crampton 1959, Crampton 1976, altered hydrology may have contributed include species occurrences and the Medeiros 1976, Reeder 1982). Two other to the presence of invasive plants in the vernal pool complexes in which they occurrences in Madera County were lost pools (Alexander and Schlising 1997). occur as mapped by Holland (1998) and by development for residences and as visible on SPOT imagery. Located in orchards. The other five occurrences, Hairy Orcutt Grass Unit Review Madera County, this unit contains which were in Madera, Merced, and We conducted a regional review vernal pool habitat extending from the Stanislaus counties, are listed as across the range of hairy Orcutt grass to Chowchilla River in the north to the extirpated because the habitat was being evaluate and select areas that are Fresno River in the south. All vernal used for irrigated pasture or dry farming essential to the conservation of the pools in this unit are located east of or had been disced when they were last species and that may require special State Highway 99 and extend into the visited in 1986 and 1987 (Stone et al. management. Important factors we low elevation foothill region of the 1988). However, continued field visits considered were the known presence of Sierra Nevada. The town of Madera are advisable because another the species and the presence of the borders the unit on its southwest edge, population reappeared several years primary constituent elements essential Hensley Lake is east of the unit, and after discing (CNDDB 2001). to the conservation of the species. A Eastman Lake is northeast of the unit. Hairy Orcutt grass no longer occurs in specific description of each area is The Madera Unit overlaps with the Glenn County pool where it was outlined below. succulent owl’s-clover Unit 4, San found in 1937 because the area is now Joaquin Valley Orcutt grass units 3 and a permanent pond (J. Silveira pers. Unit 1, Vina Plains Unit, Tehama and 4, and hairy Orcutt grass Unit 6, and comm.). Inappropriate hydrology also Butte Counties (8,748 ha (21,617 ac)) vernal pool tadpole shrimp Unit 15. may be responsible for the loss of one This area is proposed as critical Other sensitive vernal pool species other occurrence at the Sacramento habitat for hairy Orcutt grass because it found within this unit include National Wildlife Refuge (Silveira in litt. supports over 25 percent of all known California tiger salamander and 2000). The population consisted of 20 occurrences of the species and contains California linderiella. All the lands plants when it was first discovered in large vernal pools occurring on Tuscan within this unit are privately owned. 1993, but those plants died before and Anita soils (USDA 2001, CNDDB

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2002). The boundaries of this unit were north of Chico and the conversion of 149 in Butte County. The eastern delineated to include the interconnected grazed lands to more intensive boundary extends up the watershed of pools, swales, and associated uplands agricultural uses threaten vernal pool Clear Creek and the western boundary mapped by Holland (1998) that habitat within this unit. extends south paralleling State Route 99 contribute to the filling and drying of This unit for hairy Orcutt grass to Little Dry Creek. This unit is within the vernal pools where the species occupies the area south of Deer Creek Unit 9 for vernal pool fairy shrimp and occur, and maintain suitable periods of and north of Pine Creek to near Cana Unit 4 for vernal pool tadpole shrimp, pool inundation, water quality, and soil Highway. State Route 99 bisects this and coincides with Unit 3 for Greene’s moisture for hairy Orcutt grass unit and the western boundary generally tuctoria and Unit 2 for Hoover’s spurge. germination and reproduction. This unit parallels the Southern Pacific Railway All the lands within this unit are represents the northern extent of the line. This unit is included within Unit privately owned. species range, and is over 40 km (25 mi) 7 for vernal pool fairy shrimp, Unit 3 for Unit 3, Sacramento Refuge Unit, Glenn from the nearest occurrence to the vernal pool tadpole shrimp, Unit 1 for and Colusa Counties (5,718 ha (14,129 south. This area represents one of only Conservancy fairy shrimp, Unit 2 for ac)) two areas where large hairy Orcutt Greene’s tuctoria, Unit 1 for Hoover’s populations are protected, and where spurge, and Unit 4 for slender Orcutt This unit is proposed as critical for long-term monitoring of the species grass. Additional sensitive vernal pool hairy Orcutt grass because it contains status has occurred. species occurring in this unit include multiple occurrences of the species Hairy Orcutt grass may be threatened California linderiella and Bogg’s Lake within alkaline vernal pools on the by invasive species within this unit hedge-hyssop. Land ownership within Willows and Riz soil series (CNDDB (Alexander and Schlising 1997). In some this unit includes 2,264 ha (5,660 ac) by 2002) and the vernal pool habitat areas special management actions have TNC and 57 ha (142 ac) of private land remains inundated for sufficient periods been taken to counteract the negative protected by conservation easement or of time to allow hairy Orcutt grass to effects of invasive species on hairy agreement under the WRP. TNC has an complete its life cycle. This area is one Orcutt grass. For example, cocklebur, an additional 3,826 ha (9,564 ac) of of only three locations where hairy aggressive native plant, has been conservation easements within this unit. Orcutt grass is found in the Sacramento removed by hand from some of the Vina Valley. This area represents one of only Unit 2, Butte Unit, Butte County, Plains pools (Alexander and Schlising two areas where large hairy Orcutt California (979 ha (2,418 ac)) 1997), an effort that began in 1991 using populations are protected, and where funds from the California Endangered This unit is proposed as critical for long-term monitoring of the species Species Tax Check-Off Fund (CDFG hairy Orcutt grass because it supports status has occurred. 1991). the species within vernal pools on Habitat for hairy Orcutt grass is The majority of the lands included Tuscan soils (Holland 1998, USDA greatly fragmented in this portion of its within this unit are privately owned. 1994, 1999, CNDDB 2002). These pool range, and this unit is over 40 km (25 This unit contains TNC’s 1862-ha types remain inundated for sufficient mi) from the nearest unit to the east, and (4,600-ac) Vina Plains preserve. The periods of time to allow hairy Orcutt over 225 km (140 mi) from the nearest preserve contains over 300 species of grass to complete its life cycle. This area unit to the south. Hairy Orcutt grass is plants, and diverse communities of and Unit 1 are the only locations where known from only 7 general areas across aquatic invertebrates. Since the 1960’s, hairy Orcutt grass is found on the its entire range, and each of these the Vina Plains area has been the focus Tuscan soil types. This area comprises locations is essential to the conservation of a number of research projects, one of only three areas where this of this species. including long-term adaptive species occurs in the Sacramento The boundaries of this unit were management and monitoring efforts Valley, and is important to maintain the delineated to include the interconnected evaluating of the effects of grazing and species range and distribution. The pools, swales, and associated uplands fire on vernal pool plants, including northern occurrences of hairy Orcutt mapped by Holland (1998) that hairy Orcutt grass (Griggs 2000). Much grass are isolated from occurrences in contribute to the filling and drying of of the basic life history information the southern part of the species range. the vernal pools where the species known about hairy Orcutt grass was This unit is over 40 km (25 mi) from the occur, and maintain suitable periods of collected at Vina Plains (e.g., Stone et al. nearest units to the north and west, and pool inundation, water quality, and soil 1988, Alexander and Schlising 1997). over 225 km (140 mi) from the nearest moisture for hairy Orcutt grass The results of this research have unit to the south and is one of seven germination and reproduction. provided crucial information to guide known occurrences of the species. This This unit for hairy Orcutt grass management and monitoring of vernal unit represents some of the last occupies the vernal pool habitat east of pool ecosystems and to identify factors remaining lower elevation vernal pool Interstate 5 to the Colusa Trough from which influence population dynamics habitats in Tehama and Butte counties. Riz Road on the north and Delevan Road of a number of endangered species, The boundaries of this unit were on the south. The area encompasses the including hairy Orcutt grass. delineated to include the interconnected Sacramento National Wildlife Refuge The Vina Plains is open to the public pools, swales, and associated uplands 5,126 ha (12,816 ac). This unit is also and provides excellent outreach and mapped by Holland (1998) and EPA part of vernal pool fairy shrimp Unit 10, educational opportunities. In addition (1994) that contribute to the filling and and vernal pool tadpole shrimp Unit 5, to TNC, the importance of vernal pool drying of the vernal pools where the and coincides with Unit 2 for habitats in this area has been recognized species occur, and maintain suitable Conservancy fairy shrimp, Unit 5 for by the CDFG, the Service, the EPA, the periods of pool inundation, water Greene’s tuctoria, and Unit 3 for CNPS, the NRCS’s WRP, and by quality, and soil moisture for hairy Hoover’s spurge. Other rare vernal pool researchers at the CSU at Chico, who Orcutt grass germination and species found in the unit include have all supported research and reproduction. pappose spikeweed, Fremont’s conservation efforts for hairy Orcutt This unit for hairy Orcutt grass goldfields, alkali goldfields, Scribe’s grass and other vernal pool species occupies the area north of the popcorn flower, Hoover’s downingia, within this unit. Urban development intersection of State Route 99 and Route folded downingia, Heckard’s

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peppergrass, heartscale, brittlescale, San Stanislaus and Merced counties. This coincides with San Joaquin Valley Joaquin spearscale, Ferris’ milk-vetch, unit coincides with Hoover’s spurge Orcutt grass Unit 4, succulent owl’s- spike-primrose, sessile mousetail, and Unit 5, Colusa grass Unit 7, Greene’s clover Unit 4, and overlaps vernal pool palmate-bracted bird’s beak. The tuctoria Unit 9 and succulent owl’s- fairy shrimp Unit 24A. Other sensitive remaining land within this unit is clover Unit 3A. It overlaps vernal pool vernal pool species found within this privately owned. fairy shrimp Unit 21. Land ownership unit include California tiger salamander within this unit includes BLM (7 ha (17 and California linderiella. All the land Unit 4, Turlock Unit, Stanislaus and ac)) and California State Parks (25 ha (61 within this unit is privately owned. Merced Counties (25,318 ha (62,560 ac)) ac)). The remaining land within this Unit 6, Cottonwood Creek Unit, Madera The Turlock Unit is proposed as unit is privately owned. critical habitat for hairy Orcutt grass County (15,824 ha (39,100 ac)) because it contains occurrences of the Unit 5, Madera Unit, Madera County This area is proposed as critical species within large vernal pools on (9,085 ha (22,448 ac)) habitat for hairy Orcutt grass because it Whitney and Meikle soils that provide This unit is proposed as critical supports over 15 percent of the known the necessary timing and length of habitat for hairy Orcutt grass because it occurrences of the species within inundation essential to the conservation contains occurrences of the species Northern Claypan vernal pools formed of this species (CNDDB 2001, Holland within vernal pools formed on on Cometa, Greenfield, Hanford soil 1998, USDA 2001). This unit contains Greenfield and Hanford soil series series (CNDDB 2001, USDA 1994, the well known Hickman pools in (Holland 1998, CNDDB 2002). These Holland 1998). These pool types Stanislaus County, and a high soils support vernal pools, swales, and provide the necessary timing, length of concentration of hairy Orcutt grass other ephemeral wetlands and inundation, water quality, and soil occurrences (CNDDB 2001). The depressions of appropriate sizes and moisture for hairy Orcutt grass Hickman pool complex contains one of depths to sustain germination, growth germination, growth and reproduction. the largest vernal lakes in California at and reproduction of hairy Orcutt grass. The Cottonwood Creek Unit represents more than 121 ha (300 ac) and To maintain the full range of ecological the southern extent of hairy Orcutt grass represents a unique habitat for hairy conditions in which this species occurs, range. This unit contains large intact Orcutt grass. This unit contains conservation of hairy Orcutt grass and contiguous vernal pool grassland numerous vernal pools, swales, and populations and vernal pool habitat in areas that help maintain the distribution other ephemeral wetlands and the Madera Unit is important. of the species through out its range. depressions of appropriate sizes and The Madera Unit contains a California The unit boundary was drawn to depths to sustain hairy Orcutt grass Department of Transportation mitigation include species occurrences and the germination, growth, and reproduction. site which protects a small occurrence vernal pool complexes in which they This unit contains large, intact vernal of hairy Orcutt grass, and is the only occur as mapped by Holland (1998) and pool grasslands that help maintain the conservation area for this species in the as visible on SPOT imagery, as well as distribution of the species over its entire Southern Sierra Foothills. However, elevation contours in the eastern foothill range. In vernal pool grasslands south of vernal pool habitat in and adjacent to region and sub-watershed boundaries. this unit, two hairy Orcutt grass this unit is progressively being Located in Madera County, this unit occurrences are presumed extirpated as eliminated and modified. An occurrence contains vernal pool habitat extending a result of agricultural conversion and of hairy Orcutt grass approximately 11 from the Fresno River in the north to the intensive cattle grazing. Extant hairy km (7 mi) east of Madera has been San Joaquin River in the south. The Orcutt grass occurrences within this extirpated due to residential Fresno River separates this unit from the unit are threatened by altered development. The development of Madera Unit to the north. All vernal hydrology, overgrazing, and competition ranch-style homes, small horse pastures, pools in this unit are located east of the with invasive species (CNDDB 2002). orchards and new roads poses a serious Atchison, Topeka, and Santa Fe The watershed containing the Hickman threat to at least five other occurrences Railroad, extending east into the low vernal pools has been breached by in or adjacent to this unit. However, elevation foothill region of the Sierra hundreds of acres of orchards that have hairy Orcutt grass has successfully been Nevada. Highway 41 bisects the eastern been planted upstream. The integrity of introduced into created vernal pools in portion of the unit. The Cottonwood the vernal pool complexes in eastern this unit. Creek Unit overlaps succulent owl’s- Stanislaus and Merced counties is The unit boundary was drawn to clover Unit 4, San Joaquin Valley Orcutt seriously threatened by irrigated include species occurrences and the grass Unit 4, and vernal pool fairy agriculture, upland housing vernal pool complexes in which they shrimp Unit 24A. Other sensitive vernal development, and the proposed UC occur as mapped by Holland (1998) and pool species found within this unit Merced Campus and associated as visible on SPOT imagery. Located in include California linderiella, spiny- development. Madera County, this unit contains sepaled button-celery, California tiger The unit boundary was drawn to vernal pool habitat extending from the salamander, and western spadefoot include species occurrences and the Chowchilla River in the north to the toad. Approximately 4 ha (10 ac) are vernal pool complexes in which they Fresno River in the south. The Fresno owned by the CDFG. occur as mapped by Holland (1998) and River separates this unit from the as visible on SPOT imagery. The Cottonwood Creek Unit to the south. All Sacramento Orcutt Grass Criteria Turlock Unit is bordered by the vernal pools in this unit are located east In proposing critical habitat units for Tuolumne River to the north and the of the Atchison, Topeka, and Santa Fe Sacramento Orcutt grass we evaluated Merced River to the south. The unit lies Railroad and extend into the low the life history and current distribution between the towns of La Grange and elevation foothill region of the Sierra of the species, the primary constituent Snelling. County Road J9 runs west of Nevada. Berenda Creek bisects the unit. elements, and the current threats to the the unit and the eastern edge is located The town of Madera is located species. This information allowed us to in the low elevation foothills of the southwest of the unit, Hensley Lake is determine which areas are likely to Sierra Nevada. Vernal pools in the east of the unit, and Eastman Lake is contribute to the conservation of Turlock Unit are located in eastern northeast of the unit. The Madera Unit Sacramento Orcutt grass.

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Sacramento Orcutt grass is found only can be determined (Griggs 1977, Stone boundaries of this unit. The unit in Sacramento County. The species was et al. 1988, Cochrane in litt. 1995b). consists primarily of public land and is historically known from nine frequently visited by the public. Sacramento Orcutt Grass Unit Review occurrences. However, one entire Although surrounded by development, occurrence and a portion of another We conducted a regional review this unit represents an important urban have been extirpated. Thus, eight of the across the range of Sacramento Orcutt preserve for the species. grass to evaluate and select areas that nine occurrences are extant. Five Unit 2, Southeast Sacramento Valley occurrences, comprising more than 70 are essential to the conservation of the species and that may require special Unit, Rancho Cordova, Sacramento percent of the occupied habitat, are County (8,853 ha (21,875 ac)) concentrated into a single area of management. Important factors we approximately 6 sq km (2.3 sq mi) east considered were the known presence of This unit is proposed as critical of Mather Field. Two other occurrences the species and the presence of the habitat for Sacramento Orcutt grass are adjacent to each other—Phoenix primary constituent elements essential because it contains over 50 percent of Field Ecological Reserve and the to the conservation of the species. A the known occurrences (4 of 8) of the introduced population at Phoenix Park. specific description of each area is species within vernal pools on Redding The eighth extant occurrence is near outlined below. and Redbluff soils that contain the primary constituent elements essential Rancho Seco Lake (Stone et al. 1988, Unit 1, Phoenix Field and Phoenix Park for the conservation of the species Cochrane in litt. 1995a, Morey in litt. Unit, Sacramento County (29 ha (72 ac)) 1996, CNDDB 2002). (USDA 2001, Holland 1998, Sacramento This unit is proposed as critical County 1999, CNDDB 2002). This unit Sacramento Orcutt grass was habitat for Sacramento Orcutt grass extirpated from its historic occurrence also represents one of only three units because it supports 25 percent of the for the species across its entire range. between Orangevale and Folsom by known occurrences (2 of 8), including This unit includes relatively urban development. The species was occurrences found within vernal pools undisturbed, hydrologically intact extirpated from one pool near Grant on Red Bluff and Redding soils (CNDDB vernal pool habitats as mapped by Line Road by changes in hydrology— 2002). These pool types provide the Holland (1998), that may continue to pool depth was increased artificially to necessary timing and frequency of support natural vernal pool ecosystem provide a longer-lasting water source for inundation for Sacramento Orcutt grass processes and maintain suitable habitat livestock, which created conditions germination, growth, and reproduction. conditions for Sacramento Orcutt grass unsuitable for persistence of Sacramento The unit boundary was drawn to to complete germination and Orcutt grass (Stone et al. 1988, CNDDB include Sacramento Orcutt grass and the reproduction. 2002). Even though they have not been vernal pool complexes in which it The Southeastern Sacramento Valley extirpated, extant occurrences at the occurs (Holland 1998, Sacramento Unit for Sacramento Orcutt grass Phoenix Field Ecological Reserve and County 1999). SPOT imagery was used occupies the area south and east of the Phoenix Park Vernal Pool Preserve to exclude urban and developed areas, Mather Airport and Regional Park. The have been degraded by off-road vehicles however, the resolution of this imagery Cosumnes River forms part of the and alterations to natural drainage did not permit us to exclude all southern and eastern boundary of the patterns (Clark et al. 1998). developed areas. This unit represents unit. Urban areas in the cities of The remaining pools where the northern extent of the species range, Sacramento and Rosemont form the Sacramento Orcutt grass grows are and one of only three areas where western boundary. Mather Airport and subject to a wide variety of factors that Sacramento Orcutt grass is known to the dredge tailings northeast of the threaten the species survival. Urban occur. airport form the northern boundary. The encroachment and the associated The Phoenix Field Ecological Reserve boundaries of this unit were delineated increase in human activities, is the and Phoenix Park occurrences are to include the interconnected pools, primary factor. One occurrence in the affected by excess runoff from lawns, swales, and associated uplands mapped primary area of concentration could be baseball fields, and roads; by herbicide by Holland (1998) that contribute to the destroyed by expansion of the county and fertilizer applied in adjacent areas filling and drying of the vernal pools landfill (Cochrane in litt. 1995a); the (Griggs and Jain 1983, Holland in litt. where the species occur, and maintain precise area of expansion has yet to be 1986, Stone et al. 1988, Cochrane in litt. suitable periods of pool inundation, determined. At present, trash from the 1995a, Morey in litt. 1996, Clark et al. water quality, and soil moisture for landfill frequently blows into the pools 1998); and by dumping of landscape Sacramento Orcutt grass germination (Cochrane in litt. 1995b). An industrial waste (Clark et al. 1998). Another threat and reproduction. park and road widening threaten at the Phoenix Field Ecological Reserve The majority of the lands included another one of the occurrences in the is invasion of garden plants (Clark et al. within this unit are privately owned, same area (Stone et al. 1988, Cochrane 1998). Recreational activities such as including the Sunrise Douglas in litt. 1995a). rollerblading (Witham in litt. 2000a), mitigation area, where several Competition from native plants such biking, and horseback riding (Cochrane occurrences of Sacramento Orcutt grass as pale spikerush (Heleocharis sp.) and in litt. 1995a, Cochrane in litt. 1995b, are known to occur. Other vernal pool mannagrass (Glyceria sp.) could Clark et al. 1998) also are damaging the habitats in this area have been identified displace Sacramento Orcutt grass (Stone Phoenix Park occurrence. by the Sacramento Valley Open Space et al. 1988, Cochrane in litt. 1995a, This unit is situated within the City Conservancy, the CNPS, and TNC as Cochrane in litt. 1995b, Clark et al. of Fair Oaks, and lies east of Hazel excellent examples of vernal pool 1998). Livestock grazing during the Avenue and northwest of Lake Natoma. grasslands, supporting a rich and growing season, or overstocking during This unit is bounded by urban diverse community of vernal pool winter grazing, may degrade habitat for development except for the east side, endemic plants and animals within Sacramento Orcutt grass; however, which is adjacent to Folsom Lake State Sacramento County. Vernal pool grazing may be useful in providing Recreation Area. The City of Fair Oak’s habitats in this unit are threatened by control of competing plants if Phoenix Park, Phoenix Field, and Jim urbanization from the expanding cities appropriate timing and stocking rates David Park are included within the of Sacramento and Elk Grove.

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Conversion to intensive agriculture, threaten existing vernal pool habitats Grand area of Merced County, two on particularly vineyards, is also a throughout this unit. the tabletops near the San Joaquin River significant threat to Sacramento Orcutt This unit occupies the area south of in Madera and Fresno counties, and one grass habitat in this unit. The unit is Laguna Creek and north of the in northwestern Tulare County (Stone et bisected by the Folsom South Canal and Sacramento and San Joaquin county line al. 1988, Stebbins et al. 1995, CNDDB State Highway 16. This unit is included along Dry Creek. The eastern boundary 2001). in Unit 8 for vernal pool tadpole shrimp is the low elevation foothills of western All of the habitat of San Joaquin and Unit 13 for vernal pool fairy shrimp Amador County. The western limit is Valley Orcutt grass in Stanislaus County and coincides with Unit 6 for slender bounded by urban and agricultural areas and much of that in Madera and Fresno Orcutt grass. Other sensitive vernal pool near the cities of Galt and Elk Grove and counties has been converted to irrigated species located within this unit include along the foothill region of the agriculture, especially to almond California linderiella, legenere, Bogg’s southeastern Sacramento Valley. This orchards and vineyards (Stone et al. Lake hedge-hyssop, Ahart’s dwarf rush, unit is a portion of Unit 13 for vernal 1988, CNDDB 2001). The majority of and western spadefoot toad. pool tadpole shrimp and Unit 19 for sites were converted by the late 1970’s vernal pool fairy shrimp. Other sensitive (Griggs 1980, Griggs and Jain 1983). Unit 3, Rancho Seco Unit, Sacramento species found within this unit include Altered hydrology and development and Amador Counties (15,750 ha Bogg’s Lake hedge-hyssop, Ahart’s (residential, commercial, and (38,918 ac)) dwarf rush, Henderson’s bent grass, recreational) eliminated several other This unit is proposed as critical legenere, Sanford’s arrowhead, populations (Stone et al. 1988, CNDDB habitat for Sacramento Orcutt grass pincushion navarretia, dwarf 2001). Dryland grain farming has because it supports occurrences of the downingia, California tiger salamander, modified vernal pool habitats of San species within high terrace vernal pools western spadefoot toad, and California Joaquin Valley Orcutt grass in Madera on Corning soils that contain the linderiella. and Merced counties, and the species is presumed to be extirpated from those primary constituent elements and San Joaquin Valley Orcutt Grass occurrences (CNDDB 2001). However, provide the necessary timing and Criteria Crampton (1959, 1976) indicated that frequency of ponding that allow the In proposing critical habitat units for species to germinate and reproduce San Joaquin Valley Orcutt grass could San Joaquin Valley Orcutt grass we persist despite dryland farming, and the (Holland 1998, USDA 2001, Sacramento evaluated the life history and current County 1999, CNDDB 2002). This unit species was rediscovered at one such distribution of the species, the primary site after having been absent for several represents one of only three areas where constituent elements, and the current this species is known to occur, and is years (CNDDB 2001). Summer livestock threats to the species. This information grazing or heavy use by cattle damaged the southern extent of the species range. allowed us to determine which areas are All of these areas are essential to the two populations each in Madera and most likely to contribute to the Merced counties (Stone et al. 1988, species by improving its chances of conservation of this species. CNDDB 2001); their current status is not surviving natural and environmental San Joaquin Valley Orcutt grass is known. changes, as well as random or stochastic restricted to the foothills of the southern The primary threats facing the events. This unit includes relatively Sierra foothill region of the San Joaquin remaining occurrences of San Joaquin undisturbed, hydrologically intact Valley. Of the 47 occurrences of San Valley Orcutt grass are altered livestock vernal pool habitats, that may continue Joaquin Valley Orcutt grass ever grazing regimes, agricultural conversion, to support natural vernal pool reported, 27 are presumed to be extant; and small population size (Stone et al. ecosystem processes and maintain 17 are certainly extirpated and 3 others 1988, CNDDB 2001). Most extant suitable habitat conditions for the are possibly extirpated because the populations are grazed currently. species. habitat has been modified (CNDDB According to Stone et al. (1988), The western boundary of the unit was 2001). However, only 12 of the moderate cattle grazing in spring is defined by the extent of high terrace occurrences presumed extant have been compatible with persistence of San soils in the region, including Corning revisited within the past decade, so Joaquin Valley Orcutt grass, and and Redding soils, which generally even the most recent information is possibly beneficial, but increased comprise the extent of Sacramento outdated. This species has been stocking rates or summer or year-round Orcutt grass habitat. The northern and completely extirpated from Stanislaus grazing would be detrimental. southern boundaries of this unit were County but remains in Fresno, Madera, Conversion to irrigated agriculture is delineated to exclude urban and Merced, and Tulare counties (Stone et most likely at sites that currently are agricultural areas. The majority of land al. 1988, CNDDB 2001). dry-farmed. Small populations are at within this unit is privately owned. San Joaquin Valley Orcutt grass does risk of extirpation due to chance events Some vernal pool areas are protected in not occur outside of the Southern Sierra (Menges 1991), particularly those that this unit on TNC’s Howard Ranch Foothills Vernal Pool Region (Keeler- fluctuate greatly from year to year Preserve and Schnider property near Wolf et al. 1998). The primary area of (Thomas 1990). Omitting those Meiss Road. The Clay Station Mitigation concentration is northeast of Merced in described only as ‘‘abundant,’’ Bank and the Borden Ranch mitigation Merced County, with 14 occurrences (52 population size has been estimated for site are located within this unit, as well percent) on the Flying M Ranch and 14 occurrences of San Joaquin Valley as a number of smaller conservation adjacent lands (EIP Associates 1999, Orcutt grass. Three numbered fewer areas including the Rancho Seco Witham in litt. 2000b, CNDDB 2001). than 10 plants each, even in favorable Preserve and the L.V. Island Preserve. The Lanes Bridge area of Madera and years (Stone in litt. 1992, Stebbins et al. Approximately 247 ha (610 ac) is owned Fresno counties has the second highest 1995, CNDDB 2001). by the CDFG, and 3,094 ha (7,736 ac) by concentration of San Joaquin Valley Additional threats to San Joaquin TNC. An additional 5 ha (11 ac) of Orcutt grass, with seven occurrences (26 Valley Orcutt grass are varied. Four of private land is protected by WRP percent), including the introduced the extant occurrences in Madera easements or agreements. Urban population. The remaining six County are in the path of the proposed expansion and conversion to vineyards occurrences include three in the Le extension of State Highway 41 (Stone in

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litt. 1992). Three other occurrences in eastern Merced is seriously threatened Joaquin Valley Orcutt grass because it Madera and Fresno counties are by irrigated agriculture, upland housing contains large intact and contiguous threatened by a proposed residential development, and the proposed UC vernal pool grassland areas that provide development (Stone et al. 1988, Merced Campus and associated connectivity between units to the north Stebbins et al. 1995, CNDDB 2001). One development. Construction of facilities and south. This unit contains vernal occurrence could be destroyed by to educate and serve twenty-five pools, swales, and other ephemeral construction of the proposed UC thousand UC students as well as faculty, wetlands and depressions of appropriate campus in Merced County (EIP staff, and their families within what is sizes and depths and the adjacent Associates 1999). Altered hydrology, now high quality vernal pool habitat in upland margins of these depressions competition from other plants, and off- eastern Merced County could have a that sustain San Joaquin Orcutt grass road vehicles are potential threats at a major impact on species endemic to germination, growth, reproduction, and few sites (Stone et al. 1988). Foraging by vernal pools. However, the recent draft dispersal. This unit is important to grasshoppers (family Acrididae) and biological opinion for the UC Merced maintain the range of habitats in which mice (order Rodentia) occasionally campus and community developed the species is known to occur. poses problems (Stebbins et al. 1995, environmental parameters which should This unit contains an area where San CNDDB 2001). In some years, reduce impacts to vernal pool habitats. Joaquin Valley Orcutt grass was grasshoppers (family Acrididae) Indirect and cumulative impacts of the introduced into six created pools; it consumed entire populations of San proposed 1,673 ha (4,133 ac) campus germinated and flowered in five of them Joaquin Valley Orcutt grass before they and associated community may be during the 2 years following its set seed (Griggs and Jain 1983, Stone et minimized with the creation of a 2,036 introduction (Durgarian 1995, Stebbins al. 1988). ha (5,030 ac) preserve intended to et al. 1995) and was still present in 2000 protect sensitive vernal pool habitat, to (Faubion in litt. 2000). This site is now San Joaquin Valley Orcutt Grass Unit be purchased with money donated by treated as an occurrence by the CNDDB Review the Packard Foundation. Approximately (2001). The Madera Irrigation District We conducted a regional review of the 419 ha (1,048 ac) of this unit is owned manages the property, which is owned known range of San Joaquin Valley by the DOD, 4 ha (8 ac) by BLM, 10 ha by the BOR (Stebbins et al. 1995). The Orcutt grass to evaluate and select areas (26 ac) by California State Parks. TNC integrity of vernal pool complexes and that are essential to the conservation of has 3,424 ha (8,559 ac) of easement their associated watersheds in the Le San Joaquin Valley Orcutt grass and that lands within this unit. The remaining Grand Unit is threatened by altered may require special management. lands within this unit are privately hydrology, competition from other Important factors we considered were owned. plants, irrigated agricultural conversion, the presence of the species and the The unit boundary was drawn to particularly orchards and vineyards, presence of the primary constituent include species occurrences and the and urban encroachment. Several elements essential to the conservation of vernal pool complexes in which they occurrences in this unit have been the species. A specific description of occur as mapped by Holland (1998) and extirpated as a result of intensive each area is outlined below. as visible on SPOT imagery. A majority agriculture. The unit boundary was drawn to Unit 1, Merced Unit, Merced and of the vernal pool habitat in the Merced include species occurrences and the Mariposa Counties (45,643 ha (112,783 Unit is in Merced County, although the vernal pool complexes in which they ac)) eastern edge of the unit overlaps into Mariposa County in the low elevation occur as mapped by Holland (1998) and This unit is proposed as critical foothills of the Sierra Nevada. The as visible on SPOT imagery. A majority habitat for San Joaquin Valley Orcutt northern boundary parallels the Merced of the vernal pool habitat in the Le grass because it supports over half of the River, and Bear Creek serves as the Grand Unit is in Merced County. The known occurrences of the species southern border. The entire unit is eastern edge of the unit overlaps into (CNDDB 2001). This unit contains the located east of State Highway 99. The Mariposa County and in the south it only area where San Joaquin Valley Merced Unit coincides with vernal pool extends to the Madera County line. Bear Orcutt grass is found on vernal pools tadpole shrimp Unit 15 and vernal pool Creek serves as the northern boundary. formed upon Corning and Greenfield fairy shrimp Unit 22. It also overlaps The entire unit is located east of State soils, and one of only two sites where hairy Orcutt grass Unit 6, Greene’s Highway 99. The towns of Le Grand and it is found on San Joaquin soils (Holland tuctoria Unit 7, succulent owl’s-clover Planada are adjacent to the western edge 1998, USDA 2001, EIP 1999). These Unit 3B, Colusa grass Unit 6, and of the unit. The Le Grand Unit overlaps pool types maintain the timing and Conservancy fairy shrimp Unit 6. Other with vernal pool tadpole shrimp Unit length of inundation necessary for San sensitive vernal pool species found 15, Greene’s tuctoria Unit 6, Joaquin Orcutt grass germination, within this unit include the California Conservancy fairy shrimp Unit 6, and growth, and reproduction, and provide tiger salamander, shining navarretia, succulent owl’s-clover Unit 6. Other a diversity of habitats for the species. dwarf downingia, Bogg’s Lake hedge- sensitive vernal pool species found This unit supports some of the largest, hyssop, western spadefoot toad, and within this unit include California tiger most robust occurrences of the species California linderiella. salamander, shining navarretia, and (Holland 2000). The area within this western spadefoot toad. TNC has 428 ha Unit 2, Le Grand Unit, Merced, unit encompasses the largest block of (1,070 ac) of easement lands within this Mariposa, and Madera Counties (21,495 pristine, high density vernal pool unit. The remaining lands within this ha (53,114 ac)) grasslands remaining in California unit are privately owned. (Vollmar 1999). This unit is proposed as critical A majority of the land in the Merced habitat for San Joaquin Valley Orcutt Unit 3, Madera Unit, Madera County Unit is privately owned and is used to grass because it supports occurrences of (20,937 ha (51,733 ac)) graze cattle. Two occurrences on the the species within vernal pools formed This unit is proposed as critical Flying M Ranch are protected under a on alluvial terraces on Raynor clay soils habitat for San Joaquin Valley Orcutt conservation easement with TNC. The (CNDDB 2001). The Le Grand Unit is grass because it supports occurrences of integrity of the vernal pool complexes in essential for the conservation of San the species within alluvial terrace

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vernal pools that provide the necessary dispersal to vernal pool habitats north millions of plants in 1995 (CNDDB timing and length of inundation for San and south of it. The diversity of vernal 2001). Joaquin Valley Orcutt grass germination, pool types found within the Fresno Unit This unit contains protected lands at growth, and reproduction (CNDDB contributes to the range of ecological the Big Table Mountain Ecological 2001). This area is the only location conditions in which San Joaquin Valley Reserve. A cooperative group consisting where the species is found on Cometa Orcutt grass occurs. of CDFG, California Department of Parks and San Joaquin soils (USDA 2001). Due to edaphic variation, vernal pool and Recreation, Sierra Foothill San Joaquin Valley Orcutt grass is habitat in this unit is less dense than Conservancy, BLM, and BOR has known from only eight general areas habitat in units further north. Vernal developed a management and along the eastern margin of the San pools within this unit have been monitoring plan for Big Table Mountain. Joaquin Valley. Historically, vernal destroyed by conversion to irrigated BLM owns approximately 15 ha (370 ac) pools spanned from the low elevation agriculture, as well as urban of land and TNC has 260 ha (650 ac) of Sierra Nevada foothills to the valley encroachment from the cities of Fresno conservation easements within this unit. floor where they connected with other and Clovis. Several known occurrences Initial efforts will focus on grazing as a large vernal pool complexes. Today, of San Joaquin Valley Orcutt grass means to control non-native grasses only a fraction of the vernal pool habitat within this unit have been extirpated while comparing population trends of that was historically in the greater due to either hydrologic modifications threatened and endangered species in watershed area remains. The integrity of off-site, or land use modifications such grazed and ungrazed portions of the vernal pool complexes and their as leveling of ‘‘hog wallows’’ for urban tableland (Griggs in litt. 2000a). This associated watersheds in the Madera development such as near State Route unit also contains an occurrence of San Unit is threatened by altered hydrology, 41 near Woodward Park in Fresno. Joaquin Valley Orcutt grass that is competition from other plants, irrigated partially on public land administered by The unit boundary was drawn to agricultural conversion, particularly the BLM. The pool supports the second- include species occurrences and the orchards and vineyards, and urban largest population of the species known vernal pool complexes in which they encroachment. to be extant. The BLM and conservation occur as mapped by Holland (1998) and The unit boundary was drawn to groups are hoping to acquire the as visible on SPOT imagery. Located in include species occurrences and the adjacent land to protect the entire pool Fresno County, this unit contains vernal vernal pool complexes in which they (CNDDB 2001). occur as mapped by Holland (1998) and pool habitat south of Millerton Lake and The unit boundary was drawn to as visible on SPOT imagery. Located in east of the San Joaquin River. The unit include species occurrences and the Madera County, this unit contains is located north of Copper Road and the vernal pool complexes in which they vernal pool habitat south of the city of Fresno is southwest of the unit. occur as mapped by Holland (1998) and Chowchilla River and abutting the The eastern boundary parallels the low as visible on SPOT imagery, as well as Fresno River. Berenda Creek is located elevation foothill region of the Sierra elevation contours in the eastern foothill northwest of the unit. Habitat within Nevada. Auberry Road is east of the region and sub-watershed boundaries. this unit is located east of the Atchison, northern portion of the unit and passes Unit 5 for San Joaquin Orcutt grass is Topeka, and Santa Fe Railroad and through the southern portion of the unit. comprised of two subunits. Both extends into the low elevation foothill CDFG has approximately 0.4 ha (1 ac) of subunits are located east of Millerton region of the Sierra Nevada. The town land within this unit. The Fresno Unit Lake on basalt mesas above the San of Madera borders the unit on its overlaps San Joaquin Valley Orcutt grass Joaquin River. Subunit 5B is located on southwest edge, Hensley Lake is east of Unit 5 and vernal pool fairy shrimp Unit Kennedy Table in Madera County, and the unit, and Eastman Lake is northeast 24B. Other sensitive vernal pool species Subunit 5A is directly south of this unit of the unit. The Madera Unit coincides found within this unit include across the San Joaquin River on Table with hairy Orcutt grass Unit 7, Greene’s California linderiella, California tiger Mountain in Fresno County. The Table tuctoria Unit 7, succulent owl’s-clover salamander, and western spadefoot Mountain Rancheria is south of this Unit 4 and vernal pool fairy shrimp Unit toad. unit. Unit 5 coincides with vernal pool 24A. Other sensitive vernal pool species Unit 5 A and B, Table Mountain Unit, fairy shrimp Unit 25, vernal pool found within this unit include Fresno and Madera Counties, (1,723 ha tadpole shrimp Unit 17, and succulent California tiger salamander and (4,258ac)) owl’s-clover units 6A and 6B. Other California linderiella. All the land sensitive vernal pool species found within this unit is privately owned. This area is proposed as critical within this unit include Bogg’s lake habitat for San Joaquin Valley Orcutt hedge-hyssop and California linderiella. Unit 4, Fresno Unit, Fresno County grass because it supports occurrences of (3,233 ha (7,990 ac)) the species within Northern Basalt Flow Unit 6A and B, Tulare Unit, Tulare This unit is proposed as critical vernal pools (Holland 1998, Keeler-Wolf County (8,028 ha (19,836 ac)) habitat for San Joaquin Valley Orcutt et al. 1998, CNDDB 2002). This is the This unit is proposed as critical for grass because it contains occurrences of only area where San Joaquin Valley San Joaquin Valley Orcutt grass because the species growing within vernal pools Orcutt grass is known to occur within it contains occurrences of the species formed on Fallbrook, Ramona, San these pool types (CNDDB 2001). within vernal pools on Madera and Joaquin, Vista, and Pollasky soil series Northern Basalt Flow vernal pool Greenfield soils that provide the (CNDDB 2002). This unit contains complexes are an extremely rare vernal primary constituent elements essential vernal pools, swales, and other pool habitat occurring only on ancient to the conservation of the species ephemeral wetlands and depressions of terraces and hilltops above the (USDA 2001, CNDDB 2001). This unit appropriate sizes and depths and the surrounding low-lying terrain. They represents the southern extent of San adjacent upland margins of these typically contain small, irregularly Joaquin Valley Orcutt grass range. San depressions that sustain San Joaquin clustered pools with ‘‘flashy hydrology’’ Joaquin Valley Orcutt grass occurs on Orcutt grass germination, growth, and (Keeler-Wolf et al. 1998). The Kennedy CDFG land at Sequoia Fields Ecological reproduction. This unit is significant Table occurrence of San Joaquin Valley Reserve (199 ha, (491 ac)); however, geographically, as it may contribute to Orcutt grass was described as containing most of the area within this unit is

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privately owned. This unit contains the Modoc Plateau Vernal Pool Region the vernal pool habitat remains vernal pools and other ephemeral in Lassen, Plumas, Shasta, and Siskiyou inundated for sufficient periods of time wetlands and depressions of appropriate counties. Additional occurrences of the to allow slender Orcutt grass to sizes and depths and the adjacent species are found in Shasta, Lake, and complete its life cycle. The species is upland margins of these depressions Sacramento counties. found growing within Northern Basalt that sustain San Joaquin Valley Orcutt Urban development in the vicinity of Flow vernal pools occurring on Gooval, grass germination, growth and Redding has extirpated or caused the Lasvar, Lasvar-Pitvar, and Nosoni soils reproduction. Agricultural conversion of severe decline of five slender Orcutt that provide the primary constituent range or barren land and urban grass occurrences through construction elements essential to the conservation of development have greatly reduced the activities and hydrological alterations the species (CNDDB 2002). These amount of vernal pool habitat in this (Griggs and Jain 1983, CNDDB 2001). occurrences are all found on the Modoc area. Agricultural conversion apparently Plateau, where they are located at higher The unit boundary was drawn to eliminated the species from the type elevations, and experience the coldest include species occurrences and the locality. Although the exact location of climatic conditions of any other areas vernal pool complexes in which they the type collection is not known, the throughout the species range. The occur as mapped by Holland (1998) and general area was being used for crop occurrences are on Northern Basalt as visible on SPOT imagery, as well as fields and both irrigated and dry Flow vernal pools (CNDDB 2002). This elevation contours in the eastern foothill pastures as of 1987 (Stone et al. 1988). area represents the northern-most extent region and sub-watershed boundaries. Urban development is continuing in the of the range of slender Orcutt grass, and There are two subunits within the vicinity of Redding and could eliminate is over 50 km (32 mi) from the nearest Tulare Unit. This westernmost subunit, the remaining populations in that area. occupied areas to the south. subunit A, is located east of J19. Road A variety of other factors are The boundaries of this unit were 63 cuts through its eastern edge. St. contributing to the continued decline of delineated by using SPOT imagery and Johns River is south of the subunit and slender Orcutt grass including off-road elevation contours to include the open the Southern Pacific Railroad runs vehicle use, inappropriate livestock flat area associated with the vernal pool northeast of the unit. Subunit B is grazing, altered hydrology, and including the adjacent uplands that located east of Road 63 and Road 201 competition from other plants (Stone et contribute to the filling and drying of passes through it. It extends into the low al. 1988, Corbin and Schoolcraft 1989). the vernal pool where slender Orcutt elevation foothills of the Sierra Nevada. Off-road vehicle use is a particular grass occurs. The unit designates an area Colvin Mountain is located within the problem near Redding and in forested sufficient to maintain suitable periods of southwest boundary. Road 245 bisects areas of the Modoc Plateau. According pool inundation, water quality, and soil subunit B and the south side of Red to Stone et al. (1988), ‘‘moderate’’ moisture for slender Orcutt grass to Mountain is within the northeast livestock grazing in spring is compatible germinate, grow, and reproduce. boundary of this unit. The Tulare Unit with slender Orcutt grass but The Modoc Plateau area is not coincides with Hoover’s spurge Unit 7, overstocking, summer grazing, and threatened by urban development at this and it overlaps with vernal pool tadpole trampling pose threats to several time due to its remote location, however shrimp Unit 18 and vernal pool fairy occurrences. However, grazing may be off-road vehicle use and overgrazing shrimp Unit 26. Other sensitive vernal necessary to control aggressive may threaten some occurrences in this pool species found within this unit competitors such as the native species, area (CNDDB 2001). Additional include California tiger salamander, pale spikerush (Witham in litt. 2000a). sensitive species found within this unit spiny-sepaled button-celery, and the Altered hydrology contributes to the include Bogg’s Lake hedge-hyssop, and western spadefoot toad. decline of slender Orcutt grass by profuse flowered pogogyne (Pogogyne floribunda). Although the majority of Slender Orcutt Grass Criteria creating conditions unsuitable for its germination, growth, or reproduction, land within this unit is located either on In proposing critical habitat units for and by promoting the growth of USFS (15,500 ha (38,750 ac)), NPS (58 slender Orcutt Grass we evaluated the competing plant species. ha (144 ac)), or BLM lands (2,754 ha life history and current distribution of (6,886 ac)). The California State Parks the species described in the background Slender Orcutt Grass Unit Review also has land within this unit (37 ha (92 section of this rule, the primary We conducted a regional review ac)). constituent elements described in the across the range of slender Orcutt grass This unit for slender Orcutt grass primary constituent element section of to evaluate and select areas that are consists of nine subunits largely within this rule, and the current threats to the essential to the conservation of the the volcanic plateau of northeastern species described below. This species and that may require special California. The nine subunits are information allowed us to determine management. Important factors we identified as the Lake Almanor, Crater which areas are likely to contribute to considered were the known presence of Lake Mountain, Poison Lake, Badger the conservation of this species and to the species and the presence of the Mountain, Lost Creek, Goose Valley, delineate units so that threats to this primary constituent elements essential Long Valley, Cayton Creek, and species might be minimized. to the conservation of the species. A Timbered Crater subunits. The Lake Slender Orcutt grass is currently specific description of each area is Almanor subunit is located in Plumas known from 79 occurrences, of which outlined below. County, on the southwestern part of 73 are presumed to be extant (Corbin in Lake Almanor along Humbug Humboldt litt. 1999, CNDDB 2001); occurrences Unit 1 A, B, C, D, E, F, G, H, and I, Cross Road and State Route 89. The area are presumed to be extant until the Modoc Plateau Unit, Plumas, Lassen, extends from near the shoreline upslope CNDDB receives documentation that Shasta, Modoc, and Siskiyou Counties to the watershed boundary. The land is they have been extirpated. The primary (23,266 ha (57,490 ac)) owned by the USDA and managed by area of concentration for slender Orcutt This unit is proposed as critical the USFS. The Crater Lake Mountain grass is in the vicinity of Dales, Tehama habitat for slender Orcutt grass because subunit is located along Route 44 and County. A secondary area of it contains almost 25 percent of all encompasses the northwestern portion concentration for slender Orcutt grass is known occurrences of the species and of Crater Lake Mountain as well as

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Grays and Harvey valleys. The the Sacramento Valley. The majority of (52 ha (130 ac)), State Land Commission watershed boundary was used to the lands included within this unit are (380 ha (950 ac)). The CDFG administers determine the extent of this subregion. privately owned. Urban expansion from approximately 17 ha (42 ac) and the The Poison Lake subunit north of State the city of Redding has greatly affected TNC has conservation easements on Route 44 near Pittville Road adjacent to existing vernal pool habitats throughout 6,230 (15,575 ac) within this unit. The South Cabin Reservoir and Ebey Lake. this unit. remaining lands included within this The western boundary is near Halls Flat The boundaries of this unit were unit are privately owned and urban Road. The Badger Mountain subunit is delineated to include the interconnected development east of Redding threatens located north of Badger Mountain and pools, swales, and associated uplands the vernal pool habitats within this area. east of State Route 89 and South of mapped by Holland (1998) that This unit occupies the area south of the Potato Butte. Little Bunch Grass contribute to the filling and drying of Tehama/Shasta county line south to Meadow is included in this unit. The the vernal pools where the species Sevenmile Creek near the Tuscan Lost Creek subunit is located south of occur, and maintain suitable periods of Buttes. The eastern boundary Cinder Butte and west of the Hat Creek pool inundation, water quality, and soil encompasses the vernal pool habitats Rim. Lost Creek near Wilcox Road is moisture for slender Orcutt grass along the lower elevation bordering the within this subunit. The Goose Valley germination and reproduction. The BLM Sacramento River. The western subunit is located in Shasta County owns 33 ha (81 ac) in the unit, while the boundary roughly follows the northwest of the intersection of State NRCS holds conservation easements or Sacramento River. Table Mountain west Route 299 and Route 89 in Goose Valley agreements on an additional 52 ha (130 of the Sacramento River north of Paynes north of Burney, California. The Long ac) through its WRP program. Creek and Red Bluff is included in this Valley subunit is located in Long Valley The Stillwater Plains Unit 2 contains unit. This unit coincides within Unit 2 west of Black Ranch Road south of Long three subunits. These are located in the for vernal pool tadpole shrimp. Valley Mountain and east of Lookout area east and south of the city of Unit 4, Vina Plains Unit, Tehama and Mountain. The Cayton Creek subunit is Redding near the Redding Municipal Butte Counties (11,673 ha (28,845 ac)) located in Shasta County north of Airport encompassing Stillwater Plains Cayton Valley and Lake Britton east of to the confluence of the Sacramento This unit is proposed as critical Route 89. The area includes the River and Cow Creek. This unit is also habitat for slender Orcutt grass because northwestern portion of the watershed part of vernal pool fairy shrimp Unit 5 it supports occurrences of the species boundary for Fort Mountain along Red and vernal pool tadpole shrimp Unit 1. within vernal pools on Tuscan loam and Mountain Road. The subunit is located Other sensitive species occurring within Inks soils (CNDDB 2002) and the vernal in the Shasta National Forest. The this unit include Red Bluff dwarf rush, pool habitats provide the necessary Timbered Crater subunit is located on California linderiella, and Henderson’s timing and length of inundation for the Shasta/Modoc/Siskiyou county bent grass. slender Orcutt grass germination, border near Little Hot Springs Valley. growth, and reproduction. This area is Unit 3, Inskip Hill, Tehama and Shasta over 160 km (100 mi) from the nearest The subunit includes the area adjacent Counties (20,446 ha (50,522 ac)) to Timbered Crater up to the Whitehorse area occupied by slender Orcutt grass to Mountains and Day Road. The Timbered This unit is proposed as critical the south. Crater subunit includes an area which habitat for slender Orcutt grass because The boundaries of this unit were has been proposed to be designated by it supports occurrences of the species delineated by using SPOT imagery and the BLM as a Research Natural Area for within vernal pools on Guenon, Inskip, elevation contours to include the open vernal pools. Inks, and Toomes soils (CNDDB 2002). flat area associated with the vernal pool The vernal pool habitats remain including the adjacent uplands that Unit 2 A, B, and C, Stillwater Plains inundated for sufficient periods of time contribute to the filling and drying of Unit, Shasta County (5,100 ha (12,601 to allow the species to germinate, grow, the vernal pools where slender Orcutt ac)) and produce seed. The area supports grass occur, and maintain suitable This unit is proposed as critical over 40 percent of the known periods of pool inundation, water habitat because it contains many occurrences the species (CNDDB 2002) quality, and soil moisture for slender occurrences of slender Orcutt grass and is important in maintaining a Orcutt grass to germinate and (CNDDB 2001) living within large vernal diversity of habitats for slender Orcutt reproduce. pool grassland areas that support grass. This unit contains large vernal The majority of the lands included aggregations or systems of pool complexes that represent some of within this unit are privately owned. hydrologically interconnected pools, the last remaining lower elevation This unit contains TNC’s 1862 ha (4,600 swales, and other ephemeral wetlands vernal pool habitats in the northern ac) Vina Plains preserve. The preserve and depressions within a matrix of Sacramento Valley. These habitats are contains over 300 species of plants, and surrounding uplands that together form important to maintain the geographical diverse communities of aquatic hydrologically and ecologically distribution of slender Orcutt grass in invertebrates. Since the 1960s, the Vina functional units (EPA 1994, Holland the area. Plains area has been the focus of a 1998, Shasta County 2001). The boundaries of this unit were number of research projects, including This area is comprised of old alluvial delineated to include the interconnected long-term adaptive management and terraces above the Sacramento River pools, swales, and associated uplands monitoring efforts evaluating of the associated with Igo, Tuscan, Moda, and mapped by Holland (1998) that effects of grazing and fire on vernal pool Redding soils (CNDDB 2001), which contribute to the filling and drying of plants (Griggs 2000). Much of the basic provide vernal pool habitat for the the vernal pools where the species life history information known about species. These pool types provide the occur, and maintain suitable periods of slender Orcutt grass was collected at necessary timing and duration of pool inundation, water quality, and soil Vina Plains (e.g., Stone et al. 1988, inundation necessary for slender Orcutt moisture for slender Orcutt grass Alexander and Schlising 1997). The grass growth, germination, and germination and reproduction. results of this research have provided reproduction. This unit represents the Land ownership within this unit crucial information to guide northern extent of the species range in includes BLM (6,226 (15,384 ac)), CDFG management and monitoring of vernal

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pool ecosystems and to identify factors occur, and maintain suitable periods of Other sensitive vernal pool species which influence population dynamics pool inundation, water quality, and soil located within this unit include of a number of endangered species, moisture for slender Orcutt grass California linderiella, legenere, Bogg’s including slender Orcutt grass. In germination and reproduction. Lake hedge-hyssop, Ahart’s dwarf rush, addition to TNC, the importance of The majority of lands within this unit and western spadefoot toad. All the vernal pool habitats in this area has are privately owned. TNC has protected lands within this unit are privately been recognized by the CDFG, the the area around Bogg’s Lake south of owned. Service, the EPA, the CNPS, the NRCS’s Clear Lake, but most of the area is not Solano Grass Criteria WRP, and by researchers at the CSU at protected. Property ownership and Chico, who have all supported research protection within this unit includes In proposing critical habitat units for and conservation efforts for slender CDFG (5 ha (13 ac)) and TNC (77 ha Solano Grass we evaluated the life Orcutt grass and other vernal pool (192 ac)) lands. Threats to these history and current distribution of the species within this unit. Property subunits include conversion of species, the primary constituent ownership and protection within this rangeland to vineyards, overgrazing, elements, and the current threats to the unit includes CDFG (0.4 ha (1 ac)), erosion, draining, and urban expansion. species. This information allowed us to CDFG administered land (0.4 ha (1 ac)), This unit consists of two subunits that determine which areas are likely to TNC (77 ha (192 ac)), TNC easements are both located south of Clear Lake. contribute to the conservation Solano (4,661 ha (11,653)), and private land The southernmost subunit includes grass. under WRP easements or agreements (57 Little High Valley. Other sensitive Solano grass is only known from two ha, 142 ac)). species found within this unit include locations, Jepson Prairie in Solano This unit for slender Orcutt grass Loch Lomond button-celery (Eryngium County, (consisting of two CNDDB occupies the area south of Toomes constancei), Burke’s goldfields occurrences, including the type locality) Creek, and north of Pine Creek and the (Lasthenia burkei), Bogg’s Lake hedge- and the Davis Communications Annex Cana Highway. State Route 99 bisects hyssop, many-flowered navarretia in Yolo County. Solano grass is this unit and the western boundary (Navarretia leucocephala ssp. presumed to remain extant at the type generally parallels the Southern Pacific plieantha), few-flowered navarretia, and locality, although only four individual Railway line. This unit is within Unit 7 legenere. plants have been found within the last decade, all in 1993 (CNDDB 2001). The for vernal pool fairy shrimp and Unit 3 Unit 6, Southeast Sacramento Valley for vernal pool tadpole shrimp, and decline of this species at Olcott Lake is Unit, Rancho Cordova, Sacramento attributed to two primary causes— includes part of Unit 1 for Conservancy County (8,853 ha (21,875 ac)) fairy shrimp and Unit 1 for Hoover’s hydrological alterations (Griggs in litt. spurge. The unit coincides with Unit 1 This unit is proposed as critical 2000) and over collection (K. Fuller for hairy Orcutt grass and Unit 2 for habitat for slender Orcutt grass because USFWS pers. comm.1998). Competition, Greene’s tuctoria. Additional sensitive it supports occurrences of the species livestock grazing, and off-road vehicle vernal pool species occurring in this within vernal pools on Redding soils activity may have contributed to its unit include California linderiella, and and is the southern extent of the species decline (Service 1985c, Witham in litt. Bogg’s Lake hedge-hyssop. range (CNDDB 2001, Holland 1998). 1992, CNDDB 2001). The hydrology has This unit is over 170 km (105 mi) from been affected by the nearby road, Cook Unit 5A and B, Bogg’s Lake Unit, Clear the nearest units to the north, and 100 Lane, which functions like a dam to Lake Area, Lake County (1,696 ha (4,191 km (62 mi) from the nearest unit to the hold water in the lake, artificially ac)) west. Isolated and peripheral increasing the water level and duration This unit is proposed as critical populations such as this may have of inundation (Griggs in litt. 2000). The habitat for slender Orcutt grass because genetic characteristics essential to the Yolo County habitat has been damaged it supports occurrences of the species overall long-term conservation of the by application of herbicides and salt within Northern Volcanic Ashflow species (i.e., they may be different from (Witham in litt. 2000a). An vernal pools (Keeler-Wolf et al. 1998, more central populations) (Lesica and undetermined number of Solano grass CNDDB 2002). This area represents the Allendorf 1995). occurrences are presumed to have been western extent of the slender Orcutt The boundaries of this unit were extirpated by agricultural conversion grass’s range, and some of the last delineated to include the interconnected before they were documented (Service remaining vernal pool habitats in Lake pools, swales, and associated uplands 1985c, CDFG 1991). County. This unit is over 135 km (84 mi) mapped by Holland (1998) that Competition from aggressive plants from the nearest units to the north and contribute to the filling and drying of poses a potential threat to Solano grass west. Isolated and peripheral the vernal pools where the species at all three known sites. The primary populations such as this may have occur, and to maintain suitable periods competitors are lippia at Olcott Lake genetic characteristics essential to the of pool inundation, water quality, and (Witham in litt. 2000a), alkali mallow overall long-term conservation of the soil moisture for slender Orcutt grass and swamp grass at the other site in species (i.e., they may be different from germination and reproduction. Solano County (CNDDB 2001), and other populations in other parts of its This unit occupies the area southeast broad-leaved pepper-weed (Lepidium range) (Lesica and Allendorf 1995). This of Mather Field of Laguna Creek and latifolium) in Yolo County (K. Fuller is the only unit which contains north of the Sacramento and San 2002 pers. comm.). Grazing apparently examples of Northern Volcanic Ash Joaquin county line along Dry Creek. is detrimental to Solano grass but likely Flow vernal pools and has occurrences The eastern boundary is near Scott depends on the number and type of of slender Orcutt grass. Road. The western limit is bounded by livestock and the season of use. The boundaries of this unit were urban and agricultural areas near the Exclusion of horses from the Olcott Lake delineated to include the interconnected cities of Galt and Elk Grove. This unit site was followed by an increase in pools, swales, and associated uplands also is included in Unit 8 for vernal population size (Service 1985c). At last mapped by Holland (1998) that pool tadpole shrimp and Unit 13 for report, sheep still grazed the other contribute to the filling and drying of vernal pool fairy shrimp and coincides Solano County population (CNDDB the vernal pools where the species with Unit 2 for Sacramento Orcutt grass. 2001).

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A number of factors threaten the Yolo contains land owned by Yolo County This unit is situated east of the City County population in addition to and the DOD (130 ha (321 ac)). of Fairfield, south of the City of Dixon, competition, including herbicide runoff and north of the Montezuma Hills and Unit 2, Jepson Prairie Unit, Solano and soil disturbance from the creation the confluence of the Sacramento and County (7,153 ha (17,675 ac)) and maintenance of fire breaks and San Joaquin rivers. This unit coincides borrow pits (CNDDB 2001, Witham in This unit is designated as critical with Unit 2 for Colusa grass. This unit litt. 2000a). The site is not protected but habitat for Solano grass because it is encompassed by Unit 3 for does occur on DOD land. supports occurrences of the species Conservancy fairy shrimp, Unit 11 for within large playa vernal pools on the vernal pool tadpole shrimp and Unit 16 Solano Grass Unit Review Pescadero soil series which provide for vernal pool fairy shrimp. This unit We conducted a regional review habitat for Solano grass (USDA 2001, also supports a diverse community of across the range of Solano grass to Holland 1998, Solano County Water plants and animals, including the only evaluate and select areas that are Agency 2000, Solano County Farmlands known occurrence of delta green ground essential to the conservation of the and Open Space 2000, CNDDB 2002). beetle, and occurrences of California species and that may require special This area represents the largest tiger salamander, alkali milk-vetch, management. Important factors we contiguous area of habitat remaining for Bogg’s Lake hedge-hyssop, legenere, considered were the known presence of the species, and contains two of the California linderiella, and midvalley the species and the presence of the three known occurrences of Solano fairy shrimp. primary constituent elements essential grass, although one of these occurrences Additional Considerations to the conservation of the species. A has not been observed since 1993. specific description of each area is Vernal pool habitats within the greater In defining critical habitat boundaries, outlined below. Jepson Prairie grassland area that are not we made an effort to avoid developed likely to support Solano grass areas, such as towns and other similarly Unit 1, Davis Communications Annex occurrences were not included within developed lands, and intensively and Grasslands Area Unit, Yolo County this unit. This unit represents the farmed lands that are unlikely to (192 ha (474 ac)) southern extent of Solano grass range. contribute to conservation of the The Jepson Prairie Unit for Solano This unit is proposed as critical species. However, the resolution of the grass is a portion of the greater Jepson SPOT imagery and the vernal pool and habitat for Solano grass because it Prairie grassland area, one of the most supports the largest extant occurrence of species occurrence information we used pristine, intact vernal pool ecosystems did not allow us to identify these areas the species within Northern Claypan remaining in the State of California. vernal pools on Pescadero soils (CNDDB at a sufficiently fine scale to exclude all Jepson Prairie contains large, playa-like developed areas, such as towns, housing 2002). The unit boundary was drawn to vernal pools which may be over several developments, or other lands unlikely to include the vernal pool complex acres in size, including the 32 ha (80 ac) contain the primary constituent mapped by Holland (1998) and Yolo Olcott Lake. These larger pools often elements. Existing features and County Parks (2001) where Solano grass occur in complexes with smaller pools structures within the boundaries of the is known to occur. This vernal pool and hogwallow depressions. This unit mapped units, such as buildings, roads, complex maintains suitable periods of includes the Jepson Prairie Preserve, aqueducts, railroads, airport runways, pool inundation, water quality, and soil jointly managed by the Solano County other paved areas, lawns, landscaped moisture for Solano grass germination, Farmlands and Open Space Foundation areas, and most intensively farmed growth and reproduction, and dispersal, and the UC Reserve System. Jepson areas, and other urban areas, will not but not necessarily every year. This unit Prairie is the target of ongoing represents the northern extent of the conservation planning and active contain one or more of the primary range of Solano grass, and is one of only management. As part of the UC Reserve constituent elements. Federal actions two areas where the species is known to System, this area also provides critical limited to those areas, therefore, would occur. Solano grass in this unit is research opportunities for scientists to not trigger section 7 consultation, unless threatened by altered hydrology, study vernal pool species, including they affect the species and/or primary contamination, competition with Solano grass. Solano grass has constituent elements in adjacent critical invasive plant species, and surface experienced unexplained declines at habitat. disturbances such as discing. This unit Olcott Lake in Jepson Prairie, and Effects of Critical Habitat Designation is designated to encourage that special research investigating the cause of this Section 7 Consultation management actions be taken, such as decline is essential to ensure the grazing, fencing, and the recovery of Solano grass. The unit also Section 7(a) of the Act requires implementation of a targeted contains Ecological Reserves totaling Federal agencies, including the Service, management and monitoring plan be 248 ha (620 ac) owned and to ensure that actions they fund, implemented to prevent the decline of approximately 64 ha (161 ac) authorize, permit, or carry out do not Solano grass at this location (Yolo administered by CDFG. Additional destroy or adversely modify critical County Parks 2001). lands are owned by the Travis Air Force habitat. Destruction or adverse This unit is located southeast of the Base (93 ha (233 ac)), and the State Land modification of critical habitat occurs City of Davis and south of the South Commission (7 ha (17 ac)). NRCS also when a Federal action directly or Fork of Putah Creek. This unit’s western holds conservation easements or indirectly alters critical habitat to the boundary lies along the border between agreements on 436 ha (1,090 ac) of extent it appreciably diminishes the Solano and Yolo counties. This unit private land in the unit through the value of critical habitat for the represents Unit 2 for Colusa grass and WRP program. Within the greater Jepson conservation of the species. Individuals, Unit 10 for vernal pool tadpole shrimp. Prairie grassland area, existing vernal organizations, States, local governments, Other rare vernal pool species found in pools are threatened by agricultural and other non-Federal entities are this unit include alkali milk-vetch. This conversion, landfill expansion, power affected by the designation of critical area is currently being addressed by plant construction, and utility habitat only if their actions occur on local conservation planning efforts and maintenance. Federal lands, require a Federal permit,

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license, or other authorization, or technologically feasible, and that the appreciably reduce the likelihood of the involve Federal funding. Director believes would avoid the species’ survival and recovery. Actions Section 7(a) of the Act requires likelihood of jeopardizing the continued likely to ‘‘destroy or adversely modify’’ Federal agencies, including the Service, existence of listed species, or resulting critical habitat are those that would to evaluate their actions with respect to in the destruction or adverse appreciably reduce the value of critical any species that is proposed or listed as modification of critical habitat. habitat for the survival and recovery of endangered or threatened, and with Reasonable and prudent alternatives can the listed species. respect to its critical habitat, if any is vary from slight project modification to Common to both definitions is an designated or proposed. Regulations extensive redesign or relocation of the appreciable detrimental effect on the implementing this interagency project. recovery of a listed species. Given the cooperation provision of the Act are Regulations at 50 CFR 402.16 require similarity of these definitions, actions codified at 50 CFR part 402. Section Federal agencies to reinitiate likely to destroy or adversely modify 7(a)(4) of the Act requires Federal consultation on previously reviewed critical habitat would almost always agencies to confer with us on any action actions under certain circumstances, result in jeopardy to the species that is likely to jeopardize the continued including instances where critical concerned, particularly when the existence of a species proposed for habitat is subsequently designated and species is present in the area of the listing, or result in destruction or the Federal agency has retained proposed action. When the species is adverse modification of proposed discretionary involvement, or control present in an area, designation of critical habitat. Conference reports has been retained, or is authorized by critical habitat for vernal pool provide conservation recommendations law. Consequently, some Federal crustaceans or vernal pool plants is not to assist the action agency in agencies may request reinitiation of likely to result in regulatory eliminating conflicts that may be caused consultation or conference with us on requirements above those already in by the proposed action. The actions for which formal consultations place due to the presence of the listed conservation measures in a conference have been completed, if those actions species. When the species is not present report are advisory. may affect designated critical habitat or in an area, designation of critical habitat We may issue a formal conference adversely modify or destroy proposed for vernal pool crustaceans or vernal report, if requested by the Federal action critical habitat. pool plants may result in an additional agency. Formal conference reports Activities on Federal lands that may regulatory burden when a Federal nexus include an opinion that is prepared jeopardize vernal pool crustaceans or exists. according to 50 CFR 402.14, as if the vernal pool plants or adversely modify Section 4(b)(8) of the Act requires us species was listed or critical habitat their critical habitat will require section to evaluate briefly and describe, in any designated. We may adopt the formal 7 consultation. Activities on private proposed or final regulation that conference report as the biological lands that require a permit from a designates critical habitat, those opinion when the species is listed or Federal agency, such as a permit from activities involving a Federal action that critical habitat designated, if no the Corps under section 404 of the Clean may adversely modify such habitat or substantial new information or changes Water Act (33 U.S.C. 1344 et seq.), a that may be affected by such in the action alter the content of the section 10(a)(1)(B) of the Act permit designation. Activities that may destroy opinion (50 CFR 402.10(d)). from the Service, or any other activity or adversely modify critical habitat If a species is listed or critical habitat requiring Federal action (i.e., funding or would be those that alter the primary is designated, section 7(a)(2) of the Act authorization from the Federal constituent elements to the extent that requires Federal agencies to ensure that Highways Administration or Federal the value of critical habitat for the activities they authorize, fund, or carry Emergency Management Agency) will conservation of vernal pool crustaceans out are not likely to jeopardize the also continue to be subject to the section or vernal pool plants is appreciably continued existence of such a species or 7 consultation process. Federal actions reduced. We note that such activities to destroy or adversely modify its not affecting listed species or critical may also jeopardize the continued critical habitat. If a Federal action may habitat, and actions on non-Federal existence of the species. affect a listed species or its critical lands that are not federally funded, Activities that, when carried out, habitat, the responsible Federal agency authorized, or permitted do not require funded, or authorized by a Federal (action agency) must enter into section 7 consultation. Not all of the agency may directly or indirectly consultation with us. Through this areas within these units are capable of destroy or adversely modify critical consultation, the Federal action agency supporting vernal pool crustaceans or habitat for vernal pool crustaceans or would ensure that the permitted actions vernal pool plants or their primary vernal pool plants include, but are not do not destroy or adversely modify constituent elements, and such areas limited to— critical habitat. would not be subject to section 7 (1) Any activity, including the If we issue a biological opinion consultation. regulation of activities by the Corps concluding that a project is likely to To properly portray the effects of under section 404 of the Clean Water result in the destruction or adverse critical habitat designation, we must Act or activities carried out by or modification of critical habitat, we also first compare the section 7 requirements authorized by the EPA, that could alter provide ‘‘reasonable and prudent for actions that may affect critical the suitability of the watershed or water alternatives’’ to the project, if any are habitat with the requirements for quality or quantity to support vernal identifiable. Reasonable and prudent actions that may affect a listed species. pool crustaceans or vernal pool plants, alternatives are defined at 50 CFR Section 7 ensures that actions funded, or any activity that adversely affects the 402.02 as alternative actions identified authorized, or carried out by Federal natural hydrologic function of the during consultation that can be agencies are not likely to jeopardize the vernal pool system and/or ephemeral implemented in a manner consistent continued existence of a listed species, pond or depression; with the intended purpose of the action, or destroy or adversely modify the listed (2) Road construction and that are consistent with the scope of the species’ critical habitat. Actions likely maintenance, right-of-way designation, Federal agency’s legal authority and to jeopardize the continued existence of and regulation of agricultural activities, jurisdiction, that are economically and a species are those that would or any activity funded or carried out by

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the Department of Transportation or things) areas within the current range of critical habitat discussed above, as they Department of Agriculture that results the species ‘‘which may require special require no additional special in discharge of dredged or fill material, management considerations’’. management or protection. excavation, or mechanized land clearing Accordingly, areas which will not We evaluated the status of INRMPs on of ephemeral and/or vernal pool basins; require such special considerations are DOD lands that were within the (3) Sale or exchange of lands by a not critical habitat. For areas in the proposed critical habitat to determine Federal agency to a non-Federal entity current range of the species, we first whether any INRMPs met the special which could foreseeably impact the determine whether the area contains the management criteria. To date, no DOD primary constituent elements of critical physical and biological features installation has completed a final habitat; essential to the conservation of the INRMP that provides for sufficient (4) Regulation, relicensing, and species and then determine whether the conservation management and operation of damming or other water area has or needs special management protection for the vernal pool impoundments by the BOR, Corps, or or protection. Additional special crustaceans and plants. All DOD lands Federal Energy Regulatory Commission management is not required if adequate that contain the physical and biological (FERC) that inundate critical habitat for management or protection is already in features essential for the conservation of vernal pool crustaceans; place. Adequate special management or one of the vernal pool species have been (5) Regulation by the Federal Aviation protection is provided by a legally included in the proposed designation of Administration (FAA) of airport operative plan or agreement that critical habitat for that species. improvement or maintenance activities addresses the maintenance and Although no INRMPs for the vernal pool that could foreseeably impact the improvement of the primary constituent crustaceans and plants are currently in primary constituent elements of critical elements important to the species, and place on DOD lands within the habitat; manages for the long-term conservation proposed critical habitat, we will (6) Licensing of construction of of the species. We use the following continue to work with the military bases communication sites by the Federal three criteria to determine if a plan to develop INRMPs to meet the special Communications Commission (FCC) on provides adequate special management management criteria to preclude the lands containing critical habitat; or protection: (1) A current plan or final designation of critical habitat on (7) Funding of construction or agreement must be complete and their lands. development activities by the provide sufficient conservation benefit Exclusions Under Section 4(b)(2) Department of Housing and Urban to the species, (2) the plan or agreement Subsection 4(b)(2) of the Act allows Development (HUD) or other agencies must provide assurances that the us to exclude from critical habitat that destroy, fragment, or degrade conservation management strategies will designation areas where the benefits of suitable critical habitat; be implemented, and (3) the plan or exclusion outweigh the benefits of (8) Military training and maneuvers agreement must provide assurances that designation, provided the exclusion will on applicable DOD lands which could the conservation management strategies not result in the extinction of the foreseeably impact the primary will be effective, i.e., provide for species. However, prior to excluding constituent elements of critical habitat; periodic monitoring and revisions as (9) Signing of contracts to deliver these areas from critical habitat, we necessary. If all of these criteria are met, water by the BOR in situations where believe that it is best to fully and then the lands covered under the plan those deliveries could foreseeably specifically describe the areas in the would no longer meet the definition of impact the primary constituent elements proposed designation, discuss our intent critical habitat. of critical habitat; and and rationale as to why we believe the (10) Promulgation of a land use plan The Sikes Act Improvements Act of areas should be excluded from by a Federal agency such as the BLM, 1997 (Sikes Act) requires each military designated critical habitat, and solicit USFS, or DOD that may alter installation that includes land and water public comment on the exclusion of management practices for critical suitable for the conservation and these areas. habitat. management of natural resources to We believe the proposed Skunk If you have questions regarding complete, by November 17, 2001, an Hollow critical habitat (Unit 35) in whether specific activities will Integrated Natural Resources Riverside County may warrant constitute adverse modification of Management Plan (INRMP). An INRMP exclusion from the final designation of critical habitat in California, contact the integrates implementation of the critical habitat under section 4(b)(2) of Field Supervisor, Sacramento Fish and military mission of the installation with the Act based on the special Wildlife Office (see ADDRESSES section). stewardship of the natural resources management considerations and If the critical habitat occurs in Oregon, found there. Each INRMP includes an protections afforded the vernal pool contact the Field Supervisor, Oregon assessment of the ecological needs on habitat through several approved and Fish and Wildlife Office, 2600 S.E. 98th the installation, including needs to legally operative HCPs. We believe that Avenue, Portland, OR 97266. Requests provide for the conservation of listed in most instances the benefits of for copies of the regulations on listed species; a statement of goals and excluding legally operative HCPs from wildlife, and inquiries about priorities; a detailed description of the critical habitat designations will prohibitions and permits may be management actions to be implemented outweigh the benefits of including them. addressed to the U.S. Fish and Wildlife to provide for these ecological needs; The following represents our rationale Service, Branch of Endangered Species, and a monitoring and adaptive for proposing to exclude the Skunk 911 N.E. 11th Ave, Portland, OR 97232 management plan. We consult with the Hollow critical habitat unit (Unit 35) (telephone 503/231–2063; facsimile military on the development and from the final designated critical 503/231–6243). implementation of INRMPs for habitat. installations with listed species. We Section 3(5)(A) Special Management believe military bases that have (1) Benefits of Exclusion Considerations completed and approved INRMPs that The benefits of excluding HCPs Section 3(5)(A) of the Act defines address the needs of the species include relieving landowners, critical habitat to be (among other generally do not meet the definition of communities and counties of any

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additional regulatory burden that might In addition, an HCP application must development and implementation of be imposed by critical habitat. This itself be consulted upon. While this HCPs provide other important benefit is particularly compelling given consultation will not look specifically at conservation benefits, including the the past representations on the part of the issue of adverse modification of development of biological information the Service that once an HCP is critical habitat, unless critical habitat to guide conservation efforts and assist negotiated and approved by us after has already been designated within the in species recovery, and the creation of public comment, activities consistent proposed plan area, it will look at the innovative solutions to conserve species with the plan will satisfy the very similar concept of jeopardy to the while allowing for development. The requirements of the Endangered Species listed species in the plan area. Because education benefits of critical habitat, Act. Many HCPs, particularly large HCPs, particularly large regional HCPs, including informing the public of areas regional HCPs, take many years to address land use within the plan that are important for long-term survival develop and, upon completion, become boundaries, habitat issues within the and conservation of the species, are regional conservation plans that are plan boundaries will have been essentially the same as those that would consistent with the recovery of covered thoroughly addressed in the HCP and occur from the public notice and species. Imposing an additional through the consultation on the HCP. comment procedures required to regulatory review after HCP completion Our experience is also that, under most establish an HCP, as well as the public may jeopardize conservation efforts and circumstances, consultations under the participation that occurs in the partnerships in many areas and could be jeopardy standard will reach the same development of many regional HCPs. viewed as a disincentive to those result as consultations under the For these reasons, then, we believe, that developing HCPs. Excluding HCPs adverse modification standard. designation of critical habitat has little provides the Service an opportunity to Implementing regulations (50 CFR benefit in areas covered by HCPs, streamline regulatory compliance, and 402.02 ) define ‘‘jeopardize the provided that the HCP and its associated provides regulatory certainty for HCP continued existence of’’ and Implementing Agreement are legally participants. ‘‘destruction or adverse modification of’’ operative, and that the HCP specifically Another critical benefit of excluding in virtually identical terms. ‘‘Jeopardize and adequately covers the species for HCPs is that it would encourage the the continued existence of’’ means to which critical habitat is being continued development of partnerships engage in an action ‘‘that reasonably designated. with HCP participants, including states, would be expected, directly or We have reviewed and evaluated local governments, conservation indirectly, to reduce appreciably the HCPs currently approved and being organizations, and private landowners, likelihood of both the survival and that together can implement properly and legally implemented recovery of a listed species.’’ within the areas being proposed for conservation actions we would be Destruction or adverse modification unable to accomplish. By excluding critical habitat for the vernal pool means an ‘‘alteration that appreciably crustaceans and plants. Based on this areas covered by HCPs from critical diminishes the value of critical habitat habitat designation, we clearly maintain evaluation, we find that the benefits of for both the survival and recovery of a exclusion outweigh the benefits of our commitments, preserve these listed species.’’ Common to both partnerships, and, we believe, set the designating the Skunk Hollow vernal definitions is an appreciable detrimental pool (Unit 35) as critical habitat. The stage for more effective conservation effect on both survival and recovery of actions in the future. Skunk Hollow vernal pool basin a listed species, in the case of critical consists of a single, large vernal pool (2) Benefits of Inclusion habitat, by reducing the value of the and its essential associated watershed in The benefits of including HCPs in habitat so designated. Thus, actions western Riverside County. Several critical habitat are normally small. The satisfying the standard for adverse federally listed species have been principal benefit of any designated modification are nearly always found to documented from the Skunk Hollow critical habitat is that activities in such also jeopardize the species concerned, vernal pool basin. These include the habitat that may affect it require and the existence of a critical habitat threatened vernal pool fairy shrimp consultation under section 7 of the Act. designation does not materially affect (Simovich in litt 2001), the endangered Such consultation would ensure that the outcome of consultation. Additional Riverside fairy shrimp (Streptocephalus adequate protection is provided to avoid measures to protect the habitat from woottoni) (Service 2001), the threatened adverse modification of critical habitat. adverse modification are not likely to be spreading navarretia (Navarretia Where HCPs are in place, our required. fossalis), and the endangered California experience indicates that this benefit is Further, HCPs typically provide for Orcutt grass (Orcuttia californica) small or non-existent. Currently greater conservation benefits to a (Service 1998). The vernal pool complex approved and permitted HCPs are covered species than section 7 and watershed is currently protected as already designed to ensure the long- consultations because HCPs assure the part of a reserve established within an term survival of covered species within long-term protection and management approved mitigation bank in the Rancho the plan area. Where we have an of a covered species and its habitat, and Bella Vista HCP area and as part of the approved HCP, lands that we ordinarily funding for such management through conservation measures contained in the would define as critical habitat for the standards found in the 5 Point Assessment District 161 Subregional covered species will normally be Policy for HCPs (64 FR 35242) and the HCP. While neither HCP include vernal protected in reserves and other HCP No Surprises regulation (63 FR pool fairy shrimp as a covered species, conservation lands by the terms of the 8859). Such assurances are typically not both HCPs provide protection for the HCPs and their Implementing provided by section 7 consultations vernal pool complex and its associated Agreements. These HCPs and which, in contrast to HCPs, often do not watershed in perpetuity. Further, the Implementing Agreements include commit the project proponent to long- HCPs address the endangered Riverside management measures and protections term special management or protections. fairy shrimp as a covered species. We for conservation lands designed to Thus, a consultation typically does not believe that the management and protect, restore, and enhance their value accord the lands it covers the extensive protections afforded the vernal pool as habitat for covered species. benefits an HCP provides. The complex and the Riverside fairy shrimp

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are adequate for the long-term and other parties will identify, protect, draft economic analysis with a notice in conservation of this complex and this and provide appropriate management the Federal Register, and we will open species, and to preserve the for those specific lands within the a public comment period on the draft partnerships that we have developed boundaries of the plans that are economic analysis and re-open the with the local jurisdiction and project essential for the long-term conservation comment period on the proposed rule at proponents in the development of these of the species. We believe and fully that time. HCPs, we excluded the Skunk Hollow expect that our analyses of these vernal pool complex from critical proposed HCPs and proposed permits Public Comments Solicited habitat for the Riverside fairy shrimp. under section 7 of the Act will show We intend that any final action We did not and still do not believe that that covered activities carried out in resulting from this proposal will be as this exclusion from critical habitat will accordance with the provisions of the accurate and effective as possible. result in the extinction of this Riverside HCPs and biological opinions will not Therefore, we solicit comments or fairy shrimp. result in destruction or adverse suggestions from the public, other Even though the two HCPs do not modification of critical habitat. We will concerned governmental agencies, the have vernal pool fairy shrimp listed as provide technical assistance and work scientific community, industry, or any a covered species, we believe that the closely with applicants with respect to other interested party concerning this protections and management afforded HCPs currently under development and proposed rule. We particularly seek the Skunk Hollow vernal pool complex future HCPs to identify lands essential comments concerning: and the other listed vernal pool species for the long-term conservation of the (1) The reasons why any habitat through the terms and conditions of vernal pool crustaceans and plants and should or should not be determined to those HCPs are adequate to ensure the appropriate management for those be critical habitat as provided by section long-term conservation of vernal pool lands. The minimization and mitigation 4 of the Act, including whether the fairy shrimp as well. Therefore, as with measures provided under these HCPs benefits of designation will outweigh the Riverside fairy shrimp, we believe are expected to protect the essential any threats to the species due to that the benefits of the exclusion of the habitat lands proposed as critical habitat designation and whether areas under Skunk Hollow vernal pool complex in this rule. If an HCP that addresses consideration require additional special from critical habitat for vernal pool fairy any vernal pool crustacean or plant as management; shrimp outweighs the benefit of its a covered species is ultimately (2) Specific information on the inclusion. Additionally, we do not approved, we will reassess the critical amount and distribution of any of the believe that this exclusion would result habitat boundaries in light of the HCP. vernal pool crustaceans or vernal pool in the extinction of vernal pool fairy We intend to undertake this review plants and what habitat is essential to shrimp. when the HCP is approved, but funding the conservation of these species and Several HCP efforts are now under and priority constraints may influence why; way that will address the conservation the timing of such a review. Should (3) Land use designations and current needs of the vernal pool crustaceans and additional information become available or planned activities in the subject areas plants in areas we propose as critical that changes our analysis of the benefits and their possible impacts on proposed habitat. We have worked and continue of excluding any of these (or other) areas to work closely with the HCP critical habitat; in particular, in Oregon, compared to the benefits of including we seek information related to potential proponents to adequately address the them in the critical habitat designation, conservation needs of these species of selected parcels to contribute to the we may revise this proposed species recovery, considering their within the boundaries of the HCPs. In designation accordingly. Similarly, if zoning, adjacent land uses, watershed the event that future HCPs, covering any new information indicates any areas we integrity, and potential for edge effects of the vernal pool crustaceans or plants are proposing now should not be (related to shape of parcel); are developed within the boundaries of included in the critical habitat (4) Any foreseeable economic or other designated critical habitat, we will work designation because they no longer meet impacts resulting from the proposed with applicants to ensure that the HCPs the definition of critical habitat, we may provide for protection and management revise this proposed critical habitat designation of critical habitat, in of habitat areas essential for the designation. particular, any impacts on small entities conservation of those species by either or families; directing development and habitat Economic Analysis (5) Economic and other values modification to nonessential areas or Section 4(b)(2) of the Act requires us associated with designating critical appropriately modifying activities to designate critical habitat on the basis habitat for vernal pool crustaceans and within essential habitat areas so that of the best scientific and commercial vernal pool plants such as those derived such activities will not destroy or data available, and to consider the from non-consumptive uses (e.g., adversely modify the primary economic and other relevant impacts of hiking, camping, bird-watching, constituent elements. The HCP designating a particular area as critical enhanced watershed protection, development process provides an habitat. We may exclude areas from improved air quality, increased soil opportunity for more intensive data critical habitat upon a determination retention, ‘‘existence values,’’ and collection and analysis regarding the that the benefits of such exclusions reductions in administrative costs); use of particular habitat areas by vernal outweigh the benefits of specifying such (6) Whether any areas should be pool crustaceans and plants. The areas as critical habitat. We cannot excluded pursuant to section 4(b)(2); process also enables us to conduct exclude such areas from critical habitat and detailed evaluations of the importance when such exclusion will result in the (7) Whether our approach to critical of such lands to the long-term survival extinction of the species. We will habitat designation could be improved of these species in the context of conduct an analysis of the economic or modified in any way to provide for constructing a biologically configured impacts of designating these areas as greater public participation and system of interlinked habitat blocks. We critical habitat prior to a final understanding, or to assist us in fully expect that HCPs undertaken by determination. When completed, we accommodating public concern and local jurisdictions (e.g., counties, cities) will announce the availability of the comments.

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If you wish to comment on this final rulemaking. Accordingly, the final designation. The availability of the draft proposed rule, you may submit your decision may differ from this proposal. economic analysis will be announced in comments and materials by any one of the Federal Register. Public Hearings several methods (see ADDRESSES). Please Regulatory Flexibility Act (5 U.S.C. 601 submit electronic mail comments as an The Act provides for one or more et seq.) ASCII file and avoid the use of special public hearings on this proposal, if characters and any form of encryption. requested. Requests for public hearings This discussion is based upon the Please also include ‘‘Attn: [RIN must be made at least 15 days prior to information regarding potential number]’’ and your name and return the close of the public comment period. economic impact that is available to the address in your electronic message. We will schedule public hearings on Service at this time. This assessment of Please note that the electronic address this proposal, if any are requested, and economic effect may be modified prior [email protected] will be closed announce the dates, times, and places of to final rulemaking based upon out at the termination of the public those hearings in the Federal Register development and review of the comment period. If you do not receive and local newspapers at least 15 days economic analysis being prepared a confirmation from the system that we before the first hearing is held. pursuant to section 4(b)(2) of the ESA and E.O. 12866. This analysis is for the have received your electronic message, Clarity of the Rule contact us directly by calling our purposes of compliance with the Sacramento Fish and Wildlife Office at Executive Order 12866 requires each Regulatory Flexibility Act and does not phone number 916/414–6600. agency to write regulations and notices reflect the position of the Service on the Our practice is to make comments, that are easy to understand. We invite type of economic analysis required by including names and home addresses of your comments on how to make this New Mexico Cattle Growers Assn. v. respondents, available for public review proposed rule easier to understand, U.S. Fish & Wildlife Service 248 F.3d during regular business hours. including answers to questions such as 1277 (10th Cir. 2001). Individual respondents may request that the following: (1) Are the requirements Under the Regulatory Flexibility Act we withhold their home address from in the proposed rule clearly stated? (2) (5 U.S.C. 601 et seq., as amended by the the rulemaking record, which we will Does the proposed rule contain Small Business Regulatory Enforcement honor to the extent allowable by law. In technical language or jargon that Fairness Act (SBREFA) of 1996), some circumstances, we would interferes with the clarity? (3) Does the whenever an agency is required to withhold from the rulemaking record a format of the proposed rule (grouping publish a notice of rulemaking for any respondent’s identity, as allowable by and order of sections, use of headings, proposed or final rule, it must prepare law. If you wish us to withhold your paragraphing, etc.) aid or reduce its and make available for public comment name and/or address, you must state clarity? (4) Is the description of the a regulatory flexibility analysis that this prominently at the beginning of proposed rule in the SUPPLEMENTARY describes the effect of the rule on small your comment. However, we will not INFORMATION section of the preamble entities (i.e., small businesses, small consider anonymous comments. To the helpful in understanding the proposed organizations, and small government extent consistent with applicable law, rule? What else could we do to make the jurisdictions). However, no regulatory we will make all submissions from proposed rule easier to understand? flexibility analysis is required if the organizations or businesses, and from Send a copy of any comments that head of the agency certifies the rule will individuals identifying themselves as concern how we could make this rule not have a significant economic impact representatives or officials of easier to understand to: Office of on a substantial number of small organizations or businesses, available Regulatory Affairs, Department of entities. SBREFA amended the for public inspection in their entirety. Interior, Room 7229, 1849 C Street, Regulatory Flexibility Act to require Comments and materials received will NW., Washington, DC 20240. You may Federal agencies to provide a statement be made available for public inspection, e-mail your comments to this address: of the factual basis for certifying that a by appointment, during normal business [email protected]. rule will not have a significant hours at the above address. Required Determinations economic impact on a substantial number of small entities. SBREFA also Peer Review Regulatory Planning and Review amended the RFA to require a In accordance with our policy In accordance with Executive Order certification statement. We are hereby published on July 1, 1994 (59 FR 12866, this document is a significant certifying that this proposed rule will 34270), we will solicit the expert rule and was reviewed by the Office of not have a significant economic impact opinions of at least three appropriate Management and Budget (OMB). The on a substantial number of small and independent specialists regarding Service is preparing a draft economic entities. The following discussion this proposed rule. The purpose of such analysis of this proposed action. The explains our rationale for making this review is to ensure listing decisions are Service will use this analysis to meet assertion. based on scientifically sound data, the requirement of section 4(b)(2) of the According to the Small Business assumptions, and analyses. We will ESA to determine the economic Administration (http://www.sba.gov/ send these peer reviewers copies of this consequences of designating the specific size/), small entities include small proposed rule immediately following areas as critical habitat and excluding organizations, such as independent non- publication in the Federal Register. We any area from critical habitat if it is profit organizations, and small will invite these peer reviewers to determined that the benefits of such governmental jurisdictions, including comment, during the public comment exclusion outweigh the benefits of school boards and city and town period, on the specific assumptions and specifying such areas as part of the governments that serve fewer than conclusions regarding the proposed critical habitat, unless failure to 50,000 residents, as well as small designation of critical habitat. designate such area as critical habitat businesses. Small businesses include We will consider all comments and will lead to the extinction of any of the manufacturing and mining concerns information received during the 120-day vernal pool species included in this with fewer than 500 employees, public comment period on this rule. This analysis will be available for wholesale trade entities with fewer than proposed rule during preparation of a public comment before finalizing this 100 employees, retail and service

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businesses with less than $5 million in In areas that we are proposing to Executive Order 13211 annual sales, general and heavy designate as critical habitat where On May 18, 2001, the President issued construction businesses with less than occupancy status is currently unknown, an Executive Order (EO 13211) on $27.5 million in annual business, but is presumed to be likely, a potential regulations that significantly affect special trade contractors doing less than does exist that designation as critical energy supply, distribution, and use. $11.5 million in annual business, and habitat would trigger additional Federal Executive Order 13211 requires agencies agricultural businesses with annual review for activities having a Federal to prepare Statements of Energy Effects sales less than $750,000. To determine nexus (e.g., funded, permitted, when undertaking certain actions. if potential economic impacts to these authorized, etc.). We base this Although this rule is a significant small entities are significant, we determination upon the present and regulatory action under Executive Order consider the types of activities that ongoing regulatory framework in which 12866, it is not expected to significantly might trigger regulatory impacts under the Corps consults with us under affect energy supplies, distribution, or this rule as well as the types of project section 7 of the Act in the vast majority use. Therefore, this action is not a modifications that may result. In of cases where their actions may affect significant energy action and no general, the term ‘‘significant economic Statement of Energy Effects is required. impact’’ is meant to apply to a typical vernal pools. These section 7 small business firm’s business consultations are currently precipitated Unfunded Mandates Reform Act (2 operations. by either the known or presumed U.S.C. 1501 et seq.) occupancy of one or more of the vernal In determining whether this rule The Service will use the economic could ‘‘significantly affect a substantial pool crustaceans or plants addressed in analysis to evaluate consistency with number of small entities’’, the economic this rule. In those rare circumstances the Unfunded Mandates Reform Act (2 analysis first determines whether where the Corps does not consult with U.S.C. 1501 et seq.). critical habitat could potentially affect a us under section 7 of the Act, we believe ‘‘substantial number’’ of small entities that an HCP would still be required, Takings in counties supporting critical habitat based on known or a high likelihood of In accordance with Executive Order areas. While SBREFA does not occupancy. Any change or deviation in 12630 (‘‘Government Actions and explicitly define ‘‘substantial number,’’ the present regulatory climate is purely Interference with Constitutionally the Small Business Administration, as speculative at this time. Therefore, we Protected Private Property Rights’’), we well as other Federal agencies, have do not expect the final designation of have analyzed the potential takings interpreted this to represent an impact critical habitat as proposed in this rule implications of designating critical on 20 percent or greater of the number to substantially increase the regulatory habitat for these 15 vernal pool species of small entities in any industry. In or economic burden on project in a preliminary takings implications some circumstances, especially with proponents beyond that which is assessment. This preliminary critical habitat designations of limited presently required through the likely assessment concludes that this proposed extent, we may aggregate across all presence of one or more listed species, rule does not pose significant takings industries and consider whether the where the necessary primary constituent implications. However, we have not yet total number of small entities affected is elements are present. As a result of this completed the economic analysis for substantial. In estimating the numbers minimal increase in the regulatory or this proposed rule. Once the economic of small entities potentially affected, we economic burdens on any project analysis is available, we will review and also considered whether their activities revise this preliminary assessment as proponents, we do not believe that this have any Federal involvement. warranted. Designation of critical habitat only proposed designation of critical habitat affects activities conducted, funded, or for the vernal pool crustaceans and Federalism permitted by Federal agencies. Some plants will cause a significant economic In accordance with Executive Order kinds of activities are unlikely to have impact on a substantial number of small 13132, the rule does not have significant any Federal involvement and so will not entities. Federalism effects. A Federalism be affected by critical habitat We note that for actions on non- assessment is not required. In keeping designation. Federal property that do not have a with Department of the Interior policy, Designation of critical habitat only Federal connection (such as funding or we requested information from, and affects activities conducted, funded, or authorization), the current restrictions coordinated development of this critical permitted by Federal agencies; non- concerning take of the species remain in habitat proposal with appropriate State Federal activities are not affected by the effect, and that this proposed rule will resource agencies in California. We will designation. In areas where the species place no additional restrictions on such continue to coordinate any future are present, Federal agencies are already activities. designation of critical habitat for the required to consult with us under vernal pool crustaceans and vernal pool section 7 of the Act on activities that Therefore, based on the above plants with the appropriate State they fund, permit, or implement that evaluation, we are certifying that this agencies. The designation of critical may affect vernal pool crustaceans and proposed designation of critical habitat habitat in areas currently occupied by plants for whom designation of critical for the vernal pool crustaceans and the vernal pool crustaceans and vernal habitat is proposed. If this critical plants is not expected to have a pool plants imposes no additional habitat designation is finalized, Federal significant economic impact on a restrictions to those currently in place agencies also must ensure, also through substantial number of small entities, and, therefore, has little incremental consultation with us, that their activities and that an initial regulatory flexibility impact on State and local governments do not destroy or adversely modify analysis is not required. However, and their activities. The designation designated critical habitat. However, for should the economic analysis of this may have some benefit to these the reasons discussed above, we do not proposed rule indicate that there may be governments in that the areas essential believe this will result in any additional significant economic impacts on a to the conservation of the species are regulatory burden on Federal agencies substantial number of small entities, we more clearly defined, and the primary or their applicants. will revisit this determination. constituent elements of the habitat

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necessary to the survival of the species National Environmental Policy Act upon request from the Sacramento Fish are specifically identified. While We have determined that an and Wildlife Office (see ADDRESSES making this definition and Environmental Assessment or an section). identification does not alter where and Environmental Impact Statement as Authors what federally sponsored activities may defined by the National Environmental occur, it may assist these local Policy Act of 1969 need not be prepared The primary authors of this notice are governments in long range planning in connection with regulations adopted the staff of the Sacramento Fish and rather than waiting for case by case pursuant to section 4(a) of the Act. A Wildlife Office (see ADDRESSES section). section 7 consultations to occur. notice outlining our reason for this determination was published in the List of Subjects in 50 CFR Part 17 Civil Justice Reform Federal Register on October 25, 1983 Endangered and threatened species, In accordance with Executive Order (48 FR 49244). This proposed rule does not constitute a major Federal action Exports, Imports, Reporting and 12988, the Office of the Solicitor has recordkeeping requirements, determined that the rule does not significantly affecting the quality of the human government. Transportation. unduly burden the judicial system and meets the requirements of sections 3(a) Government to Government Proposed Regulation Promulgation and 3(b)(2) of the Order. We designate Relationship With Tribes Accordingly, we propose to amend critical habitat in accordance with the In accordance with the President’s part 17, subchapter B of chapter I, title provisions of the Act. The rule uses memorandum of April 29, 1994, 50 of the code of Federal Regulations as standard property descriptions and ‘‘Government-to-Government Relations set forth below: identifies the primary constituent with Native American Tribal elements within the designated areas to Governments ‘‘ (59 FR 22951), E.O. PART 17—[AMENDED] assist the public in understanding the 13175, and Department of the Interior’s habitat needs of the vernal pool manual at 512 DM 2, we readily 1. The authority citation for part 17 crustaceans or vernal pool plants. acknowledge our responsibility to continues to read as follows: communicate meaningfully with Paperwork Reduction Act of 1995 (44 recognized Federal Tribes on a Authority: 16 U.S.C. 1361–1407; 16 U.S.C. U.S.C. 3501 et seq.) government to government basis. We 1531–1544; 16 U.S.C. 4201–4245; Pub. L. 99– 625, 100 Stat. 3500; unless otherwise noted. This rule does not contain any new have determined that there are no Tribal collections of information that require lands essential for the conservation of 2. In § 17.11(h) revise the entry for the vernal pool crustaceans and plants approval by OMB under the Paperwork ‘‘Fairy shrimp, Conservancy,’’ ‘‘Fairy addressed in this proposed rule because Reduction Act. This rule will not shrimp, longhorn,’’ ‘‘Fairy shrimp, they do not support populations or vernal pool,’’ and ‘‘Tadpole shrimp, impose new record keeping or reporting suitable habitat. Therefore, critical requirements on State or local habitat for these species has not been vernal pool’’ under ‘‘CRUSTACEANS’’ governments, individuals, businesses, or proposed for designation on Tribal to read as follows: organizations. An agency may not lands. § 17.11 Endangered and threatened conduct or sponsor, and a person is not wildlife. required to respond to a collection of References Cited information unless it displays a A complete list of all references cited * * * * * currently valid OMB control number. herein, as well as others, is available (h) * * *

Species Vertebrate popu- Historic range lation where endan- Status When listed Critical habi- Special Common name Scientific name gered or threatened tat rules

******* CRUSTACEANS

******* Fairy shrimp, Con- Branchinecta U.S.A. (CA) ...... Entire ...... E 552 17.95(h) ..... NA servancy. conservatio. Fairy shrimp, long- Branchinecta U.S.A. (CA) ...... Entire ...... E 552 17.95(h) ..... NA horn. longiantenna.

******* Fairy shrimp, vernal Branchinecta lynchi U.S.A. (CA, OR) ..... Entire ...... T 552 17.95(h) ..... NA pool. Tadpole shrimp, Lepidurus packardi U.S.A. (CA) ...... Entire ...... E 552 17.95(h) ..... NA vernal pool.

*******

3. In § 17.12(h) revise the entry for Lasthenia conjugens (Contra Costa Orcuttia inaequalis (San Joaquin Valley Castilleja campestris ssp. succulenta goldfields), Limnanthes floccosa ssp. Orcutt grass), Orcuttia pilosa (hairy (succulent (or fleshy) owl’s-clover), californica (Butte County meadowfoam), Orcutt grass), Orcuttia tenuis (slender Chamaesyce hooveri (Hoover’s spurge), Neostapfia colusana (Colusa grass), Orcutt grass), Orcuttia viscida

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(Sacramento Orcutt grass), Tuctoria ‘‘FLOWERING PLANTS’’ to read as § 17.12 Endangered and threatened plants. greenei (Greene’s tuctoria), and Tuctoria follows— * * * * * mucronata (Solano grass) under (h) * * *

Species Historic range Family Status When listed Critical habi- Special Scientific name Common name tat rules

FLOWERING PLANTS

******* Castilleja campestris Fleshy owl’s clover U.S.A. (CA) ...... Scrophulariaceae .... T 611 17.96(a) ..... NA ssp. succulenta.

******* Chamaesyce hooveri Hoover’s spurge ..... U.S.A. (CA) ...... Euphorbiaceae ...... T 611 17.96(a) ..... NA

******* Lasthenia conjugens Contra Costa gold- U.S.A. (CA) ...... Asteraceae ...... E 619 17.96(a) ..... NA fields.

******* Limnanthes floccosa Butte County U.S.A. (CA) ...... Limnanthaceae ...... E 471 17.96(a) ..... NA ssp. californica. meadowfoam.

******* Neostapfia colusana Colusa grass ...... U.S.A. (CA) ...... Poaceae ...... T 611 17.96(a) ..... NA

******* Orcuttia inaequalis ... San Joaquin Valley U.S.A. (CA) ...... Poaceae ...... T 611 17.96(a) ..... NA Orcutt grass. Orcuttia pilosa ...... Hairy Orcutt grass .. U.S.A. (CA) ...... Poaceae ...... E 611 17.96(a) ..... NA Orcuttia tenuis ...... Slender Orcutt U.S.A. (CA) ...... Poaceae ...... T 611 17.96(a) ..... NA grass. Orcuttia viscida ...... Sacramento Orcutt U.S.A. (CA) ...... Poaceae ...... E 611 17.96(a) ..... NA grass. Tuctoria greenei ...... Greene’s tuctoria .... U.S.A. (CA) ...... Poaceae ...... E 611 17.96(a) ..... NA

******* Tuctoria mucronata Solano grass ...... U.S.A. (CA) ...... Poaceae ...... E 44 17.96(a) ..... NA

*******

4. In § 17.95 add critical habitat for (i) Vernal pools, swales, and other hatching, growth and reproduction, and Conservancy fairy shrimp (Branchinecta ephemeral wetlands and depressions of dispersal, but not necessarily every year. conservatio), longhorn fairy shrimp appropriate sizes and depths that (3) Existing man-made features and (Branchinecta longiantenna), vernal typically become inundated during structures, such as buildings, roads, pool fairy shrimp (Branchinecta lynchi), winter rains and hold water for railroads, airports, runways, other paved and vernal pool tadpole shrimp sufficient lengths of time necessary for areas, lawns, and other urban (Lepidurus packardi) under paragraph Conservancy fairy shrimp incubation, landscaped areas do not contain one or (h) in the same alphabetical order as this reproduction, dispersal, feeding, and more of the primary constituent species occurs in § 17.11(h), to read as sheltering, including but not limited to elements. Federal actions limited to follows: large, playa vernal pools often on basin those areas, therefore, would not trigger rim landforms and alkaline soils, but a consultation under section 7 of the Act § 17.95 Critical habitat—fish and wildlife. which are dry during the summer and unless they may affect the species and/ * * * * * do not necessarily fill with water every or primary constituent elements in (h) Crustaceans. year; and adjacent critical habitat. (ii) The geographic, topographic, and * * * * * (4) Unit 1: Butte and Tehama edaphic features that support Counties, California. Conservancy fairy shrimp (Branchinecta aggregations or systems of (i) From USGS 1:24,000 quadrangle conservatio) hydrologically interconnected pools, maps Acorn Hollow, Campbell Mound, swales, and other ephemeral wetlands Foster Island, Nord, Richardson Springs, (1) Critical habitat units are depicted and depressions within a matrix of Richardson Springs NW, and Vina, for Tehama, Butte, Glenn, Colusa, surrounding uplands that together form California, land bounded by the Solano, Stanislaus, Merced, Mariposa hydrologically and ecologically following UTM 10 NAD 83 coordinates and Ventura counties, California, on the functional units called vernal pool (E, N): 595500, 4408200; 594300, map below. complexes. These features contribute to 4408200; 594100, 4408300; 594000, (2) The primary constituent elements the filling and drying of the vernal pool, 4408400; 593600, 4408500; 593400, of critical habitat for Branchinecta and maintain suitable periods of pool 4408200; 592600, 4408200; 592500, conservatio are the habitat components inundation, water quality, and soil 4408700; 592100, 4408500; 592000, that provide— moisture for vernal pool crustacean 4408700; 591400, 4408700; 590700,

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4408700; 590400, 4408300; 589900, (6) Unit 3: Solano County, California. Plainsburg, Planada, Raynor Creek, 4408300; 589000, 4408600; 589000, (i) From USGS 1:24,000 quadrangle Snelling, Winton, and Yosemite Lake, 4409300; 589100, 4409900; 588900, maps Birds Landing, Denverton, Dozier, California, land bounded by the 4410200; 588200, 4410300; 588200, and Elmira, California, land bounded by following UTM 10 NAD 83 coordinates 4411000; 587900, 4411400; 587900, the following UTM 10 NAD 83 (E, N): 750200, 4121400; 747800, 4412000; 587900, 4412400; 587600, coordinates (E, N): 596700, 4230400; 4121400; 747800, 4121900; 747500, 4412700; 587600, 4413400; 584200, 596200, 4230400; 595900, 4230500; 4122400; 747500, 4123900; 747000, 4413400; 583100, 4413100; 582900, 595700, 4230600; 594500, 4231200; 4124700; 746900, 4125100; 743600, 4413400; 582900, 4415900; 582000, 593800, 4231200; 593600, 4230500; 4125000; 743600, 4127000; 742700, 4418300; 581800, 4419200; 582000, 589300, 4230700; 589000, 4231200; 4127000; 742600, 4126600; 742300, 4419500; 581400, 4420000; 581400, 589100, 4231300; 589100, 4231700; 4126300; 741700, 4126300; 741200, 4420400; 581800, 4420700; 581600, 588900, 4232300; 588900, 4233000; 4126800; 741200, 4128600; 740400, 4421000; 583200, 4422600; 583500, 590200, 4233600; 590500, 4233700; 4128600; 740400, 4130300; 739000, 4423600; 585200, 4424500; 586000, 591000, 4233700; 590900, 4233200; 4130300; 739000, 4130600; 738400, 4424500; 587500, 4426100; 588200, 591100, 4233100; 591300, 4233100; 4131100; 737500, 4131200; 737800, 4426500; 588600, 4429100; 588800, 592000, 4233700; 592500, 4233900; 4131700; 737700, 4132600; 737700, 4430200; 589500, 4429500; 589500, 593500, 4234200; 594800, 4235500; 4132900; 737100, 4132900; 737100, 4428600; 591400, 4425800; 592600, 594900, 4235800; 595600, 4236300; 4134200; 736700, 4134200; 736100, 4424100; 593400, 4422300; 594200, 595600, 4236800; 596500, 4237600; 4133900; 735600, 4133300; 734700, 4421100; 595900, 4417800; 595800, 596300, 4237700; 595500, 4237100; 4133300; 734700, 4133700; 734100, 595200, 4237700; 595200, 4238200; 4417300; 595800, 4416600; 596100, 4133900; 733100, 4133900; 733100, 598800, 4238200; 598500, 4239100; 4416600; 596400, 4416800; 596600, 4134600; 732700, 4134600; 732600, 598000, 4239700; 598000, 4241000; 4416800; 597100, 4416400; 597100, 4135000; 732300, 4135500; 730300, 598800, 4241000; 598800, 4240600; 4415600; 596800, 4415200; 597100, 4135400; 729900, 4135700; 729900, 600400, 4240600; 602800, 4240600; 4415000; 597800, 4415500; 598100, 4136500; 726500, 4136500; 726400, 604300, 4239400; 605200, 4240600; 4415200; 597600, 4414600; 597600, 4136100; 725900, 4136100; 725900, 4414400; 597300, 4413800; 597300, 605300, 4239700; 605500, 4239000; 4135300; 725600, 4135100; 725500, 4413300; 598200, 4413900; 598400, 605400, 4238300; 604500, 4238100; 4135100; 725300, 4135500; 725100, 4413900; 598400, 4413600; 597400, 604500, 4237500; 605200, 4237200; 4135400; 725000, 4135400; 725000, 4411900; 597600, 4411900; 598300, 605700, 4235200; 605400, 4234900; 4135600; 724800, 4135700; 724600, 4412700; 598500, 4413300; 598900, 605000, 4233900; 604600, 4233700; 4135700; 724600, 4134700; 724200, 4413300; 598900, 4411800; 599400, 604200, 4233300; 604100, 4232500; 4134700; 724200, 4135500; 723400, 4411700; 599800, 4411700; 599800, 603800, 4231500; 602300, 4230800; 4135500; 723400, 4135600; 722800, 4411000; 597700, 4409400; 596200, 601400, 4230700; 600700, 4230600; 4135600; 722800, 4135000; 722600, 4408600; 595900, 4408800; 595700, 600400, 4230900; 600400, 4231700; 4135000; 722600, 4134700; 722500, 4408800; returning to 595500, 4408200. 601100, 4232300; 601200, 4233200; 4134700; 722200, 4137900; 722800, (5) Unit 2: Colusa and Glenn Counties, 598400, 4233200; 598200, 4232100; 4137900; 722800, 4139300; 721900, California. 597800, 4231800; 597400, 4230900; 4139300; 721900, 4140200; 721000, (i) From USGS 1:24,000 quadrangle returning to 596700, 4230400. maps Logandale, Maxwell, Moulton (7) Unit 4: Solano County, California. 4140200; 721000, 4140900; 717800, Weir, and Princeton, California, land (i) From USGS 1:24,000 quadrangle 4140900; 717800, 4137700; 717100, bounded by the following UTM 10 NAD maps Antioch North and Honker Bay, 4137700; 717000, 4138200; 714500, 83 coordinates (E, N): 572900, 4357400; California, land bounded by the 4140900; 714100, 4141300; 714100, 571200, 4357400; 571200, 4358200; following UTM 10 NAD 83 coordinates 4142200; 713600, 4142400; 713200, 570400, 4358200; 570400, 4359000; (E, N): 600900, 4215500; 599300, 4143000; 713000, 4143900; 713100, 569600, 4359000; 569500, 4360500; 4215500; 598400, 4216900; 598316, 4144300; 713700, 4144600; 714500, 569300, 4362200; 569500, 4363300; 6875000, 4217900; 598400, 4217900; 4145300; 714500, 4145700; 715800, 569500, 4367200; 570000, 4367200; 598800, 4218100; 598800, 4218600; 4145800; 717000, 4145800; 718000, 569900, 4368400; 570300, 4368400; 599000, 4219000; 599200, 4219300; 4145400; 718200, 4145900; 718200, 571000, 4367600; 571000, 4367800; 599400, 4219500; 600600, 4216900; 4147600; 719700, 4148400; 720600, 570700, 4368500; 570900, 4368800; returning to 600900, 4215500. 4148600; 720600, 4149200; 719600, 571500, 4368800; 571900, 4368300; (8) Unit 5: Stanislaus County, 4149200; 719600, 4149800; 720300, 571900, 4367600; 572100, 4367600; California. 4149800; 721300, 4150700; 721700, 572400, 4368100; 572400, 4368400; (i) From USGS 1:24,000 quadrangle 4150700; 724400, 4153300; 725000, 572600, 4368900; 572800, 4368900; map Ripon, California, land bounded by 4153500; 725500, 4154200; 725800, 573000, 4368100; 573400, 4368000; the following UTM 10 NAD 83 4154800; 727200, 4155900; 727800, 573800, 4367600; 574100, 4367300; coordinates (E, N): 660800, 4167200; 4155900; 728500, 4155600; 730200, 574400, 4367200; 574500, 4366400; 660000, 4167200; 659500, 4168800; 4155600; 731600, 4155500; 732400, 574900, 4366400; 574900, 4365600; 661600, 4168800; 661600, 4169400; 4155400; 732600, 4155200; 733200, 574700, 4365500; 574400, 4364100; 662400, 4169400; 662400, 4168300; 4154700; 734100, 4154900; 734600, 575200, 4363900; 575600, 4363600; 661600, 4168000; 661600, 4168300; 4154800; 735600, 4156000; 735900, 575100, 4362400; 575600, 4361400; 660300, 4167800; 660600, 4167500; 4156000; 737100, 4155400; 737800, 575100, 4360700; 576000, 4359600; returning to 660800, 4167200. 4155000; 738200, 4154200; 738300, 575500, 4358900; 575700, 4358300; (9) Unit 6: Mariposa and Merced 4153300; 739000, 4152800; 739100, 575900, 4357700; 575300, 4357800; Counties, California. 4152200; 740200, 4151800; 740800, 575000, 4357700; 574700, 4357700; (i) From USGS 1:24,000 quadrangle 4151500; 740800, 4150300; 741100, 573600, 4357800; 573500, 4358200; maps Atwater, Haystack Mtn., Illinois 4149900; 741700, 4149400; 742100, 572900, 4358200; returning to 572900, Hill, Indian Gulch, Le Grand, Merced, 4148500; 742100, 4147100; 743400, 4357400. Merced Falls, Owens Reservoir, 4146100; 744000, 4145600; 744400,

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4144600; 744300, 4143900; 743900, 4116500; 683600, 4117100; 681200, 4121700; 712100, 4121400; 713200, 4142700; 744000, 4142000; 744200, 4117100; 681000, 4124500; 680800, 4121400; 713200, 4118700; 711600, 4141700; 745500, 4140300; 746100, 4124900; 679800, 4124900; 679800, 4118700; 711600, 4118100; 707300, 4139500; 746800, 4138500; 747700, 4125700; 680700, 4125700; 680600, 4118100; 705000, 4118100; 704500, 4137700; 748500, 4135800; 748700, 4126400; 680300, 4126700; 680300, 4119600; 699400, 4119500; 699300, 4135100; 749500, 4134000; 750100, 4127200; 678900, 4127800; 679000, 4118700; 698800, 4118700; 698500, 4132800; 750700, 4131700; 751600, 4129000; 679300, 4129200; 680100, 4118500; 698200, 4117700; 697600, 4130500; 752000, 4130200; 752800, 4129400; 679700, 4130700; 679400, 4117700; 697800, 4116500; 693700, 4130100; 753300, 4130400; 753500, 4130200; 678600, 4130200; 678000, 4116200; 694200, 4115100; 694400, 4130400; 753900, 4130200; 754000, 4131200; 678500, 4132100; 678800, 4114600; 694800, 4114600; 695000, 4129300; 753400, 4128400; 753900, 4132400; 679000, 4131800; 679200, 4115100; 695800, 4115100; 696300, 4127700; 754400, 4127700; 754600, 4131800; 680200, 4132200; 680700, 4114300; 697600, 4114200; 697900, 4127400; 755300, 4128400; 755400, 4131700; 681600, 4132800; 681200, 4113900; 697900, 4113100; 698900, 4128400; 755600, 4127700; 756900, 4133100; 681200, 4133600; 681600, 4112500; 698800, 4109800; 695700, 4126400; 757800, 4125800; 758400, 4134100; 681700, 4134200; 681900, 4109800; 695700, 4109000; 697300, 4126300; 758500, 4126300; 758600, 4134200; 682300, 4134000; 682700, 4109000; 697300, 4108100; 696400, 4126000; 757900, 4125100; 757400, 4133800; 683400, 4133100; 683600, 4108100; 696400, 4107300; 696700, 4125100; 756500, 4123700; 753500, 4132600; 683600, 4132300; 683100, 4106600; 697600, 4106600; 698200, 4122400; 750200, 4122400; returning to 4131800; 683100, 4131500; 683400, 4105800; 698200, 4105300; returning to 750200, 4121400. 4131500; 684300, 4130400; 684700, 697300, 4104500. (10) Unit 7: Merced County, 4130000; 685500, 4130700; 686000, (11) Unit 8: Ventura County, California. 4130700; 686200, 4130900; 686400, California. (i) From USGS 1:24,000 quadrangle 4130900; 688800, 4131400; 690300, (i) From USGS 1:24,000 quadrangle maps Arena, Atwater, Gustine, Ingomar, 4131400; 690500, 4130600; 691600, maps Alamo Mountain, Lion Canyon, Los Banos, San Luis Ranch, Sandy 4130600; 691600, 4130000; 692900, Lockwood Valley, San Guillermo, and Mush, Stevinson, and Turner Ranch, 4130000; 692800, 4131700; 692400, Topatopa Mountains, California, land California, land bounded by the 4131800; 692400, 4133500; 693000, bounded by the following UTM 11 NAD following UTM 10 NAD 83 coordinates 4133000; 694400, 4133100; 694400, 83 coordinates (E, N): 310100, 3830500; (E, N): 697300, 4104500; 696100, 4132000; 693700, 4132000; 693700, 309400, 3831000; 308400, 3830900; 4104500; 695700, 4105000; 695700, 4129800; 693700, 4127500; 694500, 307200, 3830600; 306000, 3831200; 4106600; 694700, 4107900; 693500, 4127000; 694800, 4127000; 695200, 304700, 3831300; 303400, 3832100; 4107900; 693700, 4109100; 692900, 4127700; 695200, 4129800; 695200, 302100, 3832600; 301600, 3833600; 4109100; 692900, 4109800; 693100, 4130300; 695700, 4130300; 695900, 300400, 3833600; 299200, 3834000; 4110200; 693800, 4110200; 693800, 4130000; 696100, 4129500; 696100, 298200, 3834400; 297700, 3835300; 4111800; 692500, 4111800; 692400, 4129100; 696900, 4129100; 696900, 297900, 3837300; 299500, 3837500; 4110600; 691800, 4110600; 691600, 4130200; 697200, 4130200; 698300, 301200, 3838400; 301500, 3839300; 4110200; 690800, 4110300; 690000, 4128600; 698600, 4128200; 700100, 303400, 3841000; 303800, 3842700; 4110300; 690000, 4111400; 689700, 4127600; 700500, 4129200; 700500, 304900, 3843600; 305800, 3843600; 4111800; 689200, 4111800; 689200, 4130600; 701700, 4130600; 701800, 307700, 3843400; 309500, 3843400; 4111300; 688400, 4111300; 688400, 4129200; 703300, 4129200; 703300, 310500, 3844200; 311900, 3844600; 4112100; 686700, 4112100; 686500, 4128800; 703900, 4128800; 703900, 313400, 3845400; 314500, 3844100; 4112900; 686500, 4113700; 686000, 4129000; 704200, 4129000; 705600, 315200, 3843800; 315700, 3842400; 4113700; 686000, 4116100; 684500, 4128500; 705600, 4127800; 705300, 316500, 3841100; 317200, 3838100; 4116100; 684400, 4114200; 682200, 4127000; 705400, 4126200; 705900, 317200, 3837000; 316500, 3833900; 4114200; 682100, 4113000; 681100, 4125700; 706800, 4125400; 707200, 315700, 3833300; 315200, 3834100; 4113000; 681100, 4111800; 680600, 4125400; 707900, 4126100; 708300, 314000, 3834100; 313100, 3832200; 4111700; 679600, 4110900; 678800, 4126100; 708300, 4125400; 709100, 311500, 3830800; returning to 310100, 4110900; 678200, 4111800; 678300, 4125400; 709900, 4125700; 709900, 3830500. 4113600; 677900, 4114400; 679400, 4126000; 710200, 4126200; 711500, (12) Map follows of all critical habitat 4114400; 679400, 4115200; 680000, 4126200; 711500, 4124600; 708000, units for Conservancy fairy shrimp 4115200; 680300, 4116000; 681800, 4124500; 706700, 4124500; 706700, (Branchinecta conservatio). 4116100; 682800, 4116600; 683600, 4122100; 711500, 4122200; 711500, BILLING CODE 4310–55–P

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BILLING CODE 4310–55–C (1) Critical habitat units are depicted (2) The primary constituent elements Longhorn Fairy Shrimp (Branchinecta for Alameda, Contra Costa, Merced and of critical habitat for Branchinecta longiantenna) San Luis Obispo counties, California, on longiantenna are the habitat the map below. components that provide:

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(i) Vernal pools, swales, and other (i) From USGS 1:24,000 quadrangle 695700, 4105000; 695700, 4106600; ephemeral wetlands and depressions of map Byron Hot Springs, California, land 694700, 4107900; 693500, 4107900; appropriate sizes and depths that bounded by the following UTM 10 NAD 693700, 4109100; 692900, 4109100; typically become inundated during 83 coordinates (E, N): 616200, 4179000; 692900, 4109800; 693100, 4110200; winter rains and hold water for 616100, 4179000; 615900, 4179200; 693800, 4110200; 693800, 4111800; sufficient lengths of time necessary for 615900, 4179400; 615700, 4179600; 692500, 4111800; 692400, 4110600; Longhorn fairy shrimp incubation, 615500, 4180100; 615100, 4180500; 691800, 4110600; 691600, 4110200; reproduction, dispersal, feeding, and 614800, 4180800; 614400, 4180900; 690800, 4110300; 690000, 4110300; sheltering, including but not limited to 614100, 4181100; 614600, 4181500; 690000, 4111400; 689700, 4111800; large, playa vernal pools often on basin 614700, 4181500; 614700, 4181700; 689200, 4111800; 689200, 4111300; rim landforms and alkaline soils, but 614900, 4181700; 615200, 4181400; 688400, 4111300; 688400, 4112100; which are dry during the summer and 615400, 4181300; 615500, 4181200; 686700, 4112100; 686500, 4112900; do not necessarily fill with water every 615500, 4181100; 615600, 4181100; 686500, 4113700; 686000, 4113700; year; and 615700, 4181300; 615800, 4181200; 686000, 4116100; 684500, 4116100; (ii) The geographic, topographic, and 616000, 4180600; 616000, 4180500; 684400, 4114200; 682200, 4114200; edaphic features that support 616200, 4180200; 616300, 4180000; 682100, 4113000; 681100, 4113000; aggregations or systems of 616200, 4179900; 615900, 4179900; 681100, 4111800; 680600, 4111700; hydrologically interconnected pools, 615900, 4179700; 616200, 4179500; 679600, 4110900; 678800, 4110900; swales, and other ephemeral wetlands returning to 616200, 4179000. 678200, 4111800; 678300, 4113600; and depressions within a matrix of (6) Unit 2: Merced County, California. 677900, 4114400; 679400, 4114400; surrounding uplands that together form (i) From USGS 1:24,000 quadrangle 679400, 4115200; 680000, 4115200; hydrologically and ecologically maps Gustine, Ingomar, Los Banos, San 680300, 4116000; 681800, 4116100; functional units called vernal pool Luis Ranch, and Stevinson, California, 682800, 4116600; 683600, 4116500; complexes. These features contribute to land bounded by the following UTM 10 683600, 4117100; returning to 681200, the filling and drying of the vernal pool, NAD 83 coordinates (E, N): 681200, 4117100. and maintain suitable periods of pool 4117100; 681000, 4124500; 680800, inundation, water quality, and soil (7) Unit 3: San Luis Obispo County, 4124900; 679800, 4124900; 679800, California. moisture for vernal pool crustacean 4125700; 680700, 4125700; 680600, hatching, growth and reproduction, and 4126400; 680300, 4126700; 680300, (i) From USGS 1:24,000 quadrangle dispersal, but not necessarily every year. 4127200; 678900, 4127800; 679000, map Byron Hot Springs, California, land (3) Existing man-made features and 4129000; 679300, 4129200; 680100, bounded by the following UTM 11 NAD structures, such as buildings, roads, 83 coordinates (E, N): 247900, 3894600; railroads, airports, runways, other paved 4129400; 679700, 4130700; 679400, 4130200; 678600, 4130200; 678000, 245800, 3895500; 243500, 3896000; areas, lawns, and other urban 242700, 3896400; 242200, 3897600; landscaped areas do not contain one or 4131200; 678500, 4132100; 678800, 4132400; 679000, 4131800; 679200, 240100, 3898900; 239500, 3899300; more of the primary constituent 239300, 3899600; 238300, 3900400; elements. Federal actions limited to 4131800; 680200, 4132200; 680700, 4131700; 681600, 4132800; 681200, 237900, 3900300; 236100, 3901000; those areas, therefore, would not trigger 235800, 3901300; 235800, 3902300; a consultation under section 7 of the Act 4133100; 681200, 4133600; 681600, 4134100; 681700, 4134200; 681900, 235500, 3903500; 234800, 3904400; unless they may affect the species and/ 233000, 3904900; 231800, 3905800; or primary constituent elements in 4134200; 682300, 4134000; 682700, 4133800; 683400, 4133100; 683600, 231600, 3907000; 231900, 3908800; adjacent critical habitat. 231800, 3909400; 229400, 3910200; (4) Subunit 1A: Contra Costa County, 4132600; 683600, 4132300; 683100, 4131800; thence south to x-coordinate 227200, 3911200; 227300, 3913400; California. 228100, 3913800; 229000, 3913900; (i) From USGS 1:24,000 quadrangle 683100 on the San Joaquin River; thence southeast along to San Joaquin River to 231900, 3913200; 233300, 3913200; map Byron Hot Springs, California, land 234300, 3912900; 235100, 3912100; bounded by the following UTM 10 NAD y-coordinate 4118400; thence west to 698400, 4118400; 698200, 4117700; 235300, 3911200; 233900, 3910100; 83 coordinates (E, N): 614700, 4184000; 233700, 3909700; 235300, 3909000; 614600, 4184000; 614600, 4184500; 697600, 4117700; 697800, 4116500; 235700, 3908500; 237200, 3907500; 614900, 4185000; 614600, 4185300; 693700, 4116200; 694200, 4115100; 237700, 3906300; 238200, 3905800; 614600, 4185900; 614700, 4185900; 694400, 4114600; 694800, 4114600; 239100, 3905200; 239100, 3904900; 614800, 4185400; 615100, 4185200; 695000, 4115100; 695800, 4115100; 242800, 3902600; 244400, 3901300; 615100, 4185500; 615300, 4185500; 696300, 4114300; 697600, 4114200; 244400, 3901000; 244700, 3900700; 615400, 4185200; 615600, 4184900; 697900, 4113900; 697900, 4113100; 244800, 3899100; 245400, 3898800; 615800, 4184900; 616000, 4184800; 698900, 4112500; 698800, 4109800; 247200, 3896600; 248200, 3895000; 616000, 4184700; 615800, 4184500; 695700, 4109800; 695700, 4109000; returning to 247900, 3894600. 615700, 4184500; 615500, 4184200; 697300, 4109000; 697300, 4108100; 615100, 4184200; 614800, 4184200; 696400, 4108100; 696400, 4107300; (8) Map follows of all critical habitat returning to 614700, 4184000. 696700, 4106600; 697600, 4106600; units for longhorn fairy shrimp (5) Subunit 1B: Alameda County, 698200, 4105800; 698200, 4105300; (Branchinecta longiantenna): California. 697300, 4104500; 696100, 4104500; BILLING CODE 4310–55–P

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BILLING CODE 4310–55–P (1) Critical habitat units are depicted Costa, Alameda, Amador, San Joaquin, Vernal Pool Fairy Shrimp (Branchinecta for Jackson County, Oregon; Shasta, Stanislaus, Merced, Mariposa, Madera, lynchi) Butte, Tehama, Glenn, Colusa, Placer, Fresno, Tulare, Kings, San Benito, Sacramento, Solano, Napa, Contra Monterey, San Luis Obispo, Santa

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00095 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.001 59978 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

Barbara, Ventura and Riverside (i) From USGS 1:24,000 quadrangle 515800, 4705300; 515800, 4705900; counties, California on the map below: map Shady Cove, Oregon, land bounded 515700, 4705900; 515700, 4706200; (2) The primary constituent elements by the following UTM 10 NAD 83 515600, 4706200; 515600, 4706400; of critical habitat for Branchinecta coordinates (E, N): 513900, 4707000; 515500, 4706400; 515500, 4706500; lynchi are the habitat components that 513600, 4707000; 513600, 4707300; 515100, 4706500; 515100, 4706700; provide— 513700, 4707300; 513700, 4707400; 515000, 4706700; 515000, 4706900; (i) Vernal pools, swales, and other 513800, 4707400; 513800, 4707500; 514700, 4706900; 514700, 4707000; ephemeral wetlands and depressions of 513400, 4707500; 513400, 4708000; 514600, 4707000; 514600, 4707200; appropriate sizes and depths that 514700, 4708000; 514700, 4707700; 514700, 4707200; 514700, 4707300; typically become inundated during 514600, 4707700; 514600, 4707600; 515000, 4707300; 515000, 4707200; winter rains and hold water for 514200, 4707600; 514200, 4707500; 515100, 4707200; 515100, 4707100; sufficient lengths of time necessary for 514100, 4707500; 514100, 4707300; 515200, 4707100; 515200, 4707000; vernal pool fairy shrimp incubation, 514000, 4707300; 514000, 4707200; 515300, 4707000; 515300, 4706800; reproduction, dispersal, feeding, and 513900, 4707200; returning to 513900, 515400, 4706800; 515400, 4706700; sheltering, including but not limited to 4707000. 515500, 4706700; 515500, 4706600; Northern Hardpan, Northern Claypan, (6) Subunit 1C: Jackson County, 515600, 4706600; 515600, 4706700; Northern Volcanic Mud Flow, and Oregon. returning to 515900, 4706700; excluding Northern Basalt Flow vernal pools (i) From USGS 1:24,000 quadrangle land bounded by 515900, 4706700; formed on a variety of geologic map Shady Cove, Oregon, land bounded 515900, 4706500; 516000, 4706500; formations and soil types, but which are by the following UTM 10 NAD 83 516000, 4706400; 516100, 4706400; dry during the summer and do not coordinates (E, N): 512000, 4706600; 516100, 4706600; 516000, 4706600; necessarily fill with water every year; 511800, 4706600; 511800, 4706700; 516000, 4706700; 515900, 4706700. and 511300, 4706700; 511300, 4706800; (8) Subunit 1E: Jackson County, 511200, 4706800; 511200, 4706900; (ii) The geographic, topographic, and Oregon. 511100, 4706900; 511100, 4707000; (i) From USGS 1:24,000 quadrangle edaphic features that support 511000, 4707000; 511000, 4707200; maps Boswell Mountain and Shady aggregations or systems of 511100, 4707200; 511100, 4707300; Cove, Oregon, land bounded by the hydrologically interconnected pools, 511200, 4707300; 511200, 4707400; following UTM 10 NAD 83 coordinates swales, and other ephemeral wetlands 511100, 4707400; 511100, 4707500; (E, N): 510500, 4706000; 510400, and depressions within a matrix of 511200, 4707500; 511200, 4707600; 4706000; 510400, 4706100; 510300, surrounding uplands that together form 511400, 4707600; 511400, 4707700; 4706100; 510300, 4706300; 510100, hydrologically and ecologically 511600, 4707700; 511600, 4707800; 4706300; 510100, 4706400; 510000, functional units called vernal pool 511800, 4707800; 511800, 4707300; 4706400; 510000, 4706500; 509800, complexes. These features contribute to 511900, 4707300; 511900, 4706800; 4706500; 509800, 4706700; 510000, the filling and drying of the vernal pool, 512000, 4706800; returning to 512000, 4706700; 510000, 4706900; 510100, and maintain suitable periods of pool 4706600. 4706900; 510100, 4707000; 510200, inundation, water quality, and soil (7) Subunit 1D: Jackson County, 4707000; 510200, 4706900; 510500, moisture for vernal pool crustacean Oregon. 4706900; 510500, 4707000; 510600, hatching, growth and reproduction, and (i) From USGS 1:24,000 quadrangle 4707000; 510600, 4707100; 510800, dispersal, but not necessarily every year. maps Eagle Point and Shady Cove, 4707100; 510800, 4706900; 511000, (3) Existing man-made features and Oregon, land bounded by the following 4706900; 511000, 4706500; 510700, structures, such as buildings, roads, UTM 10 NAD 83 coordinates (E, N): 4706500; 510700, 4706300; 510500, railroads, airports, runways, other paved 515900, 4706700; 515900, 4707000; 4706300; returning to 510500, 4706000. areas, lawns, and other urban 516200, 4707000; 516200, 4706900; (9) Subunit 1F: Jackson County, landscaped areas do not contain one or 516300, 4706900; 516300, 4706700; Oregon. more of the primary constituent 516400, 4706700; 516400, 4706800; (i) From USGS 1:24,000 quadrangle elements. Federal actions limited to 516500, 4706800; 516500, 4707000; maps Eagle Point and Shady Cove, those areas, therefore, would not trigger 516700, 4707000; 516700, 4706900; Oregon, land bounded by the following a consultation under section 7 of the Act 516900, 4706900; 516900, 4707000; UTM 10 NAD 83 coordinates (E, N): unless they may affect the species and/ 517000, 4707000; 517000, 4707100; 511400, 4704800; 511200, 4704800; or primary constituent elements in 517100, 4707100; 517100, 4706900; 511200, 4705000; 511000, 4705000; adjacent critical habitat. 517400, 4706900; 517400, 4706700; 511000, 4705200; 510900, 4705200; (4) Subunit 1A: Jackson County, 517300, 4706700; 517300, 4706500; 510900, 4705300; 510800, 4705300; Oregon. 517200, 4706500; 517200, 4706400; 510800, 4705900; 511000, 4705900; (i) From USGS 1:24,000 quadrangle 517100, 4706400; 517100, 4706300; 511000, 4706000; 511300, 4706000; map Shady Cove, Oregon, land bounded 516700, 4706300; 516700, 4705600; 511300, 4705900; 511500, 4705900; by the following UTM 10 NAD 83 516500, 4705600; 516500, 4705500; 511500, 4705100; 511400, 4705100; coordinates (E, N): 513900, 4709700; 516600, 4705500; 516600, 4705400; returning to 511400, 4704800; excluding 513600, 4709700; 513600, 4709800; 516700, 4705400; 516700, 4704800; land bounded by 511300, 4705300; 513500, 4709800; 513500, 4710000; 516600, 4704800; 516600, 4704600; 511300, 4705500; 511200, 4705500; 513700, 4710000; 513700, 4710300; 516300, 4704600; 516300, 4704500; 511200, 4705300; 511300, 4705300. 513200, 4710300; 513200, 4710600; 516400, 4704500; 516400, 4704400; (10) Subunit 1G: Jackson County, 513100, 4710600; 513100, 4710800; 516500, 4704400; 516500, 4704300; Oregon. 514300, 4710800; 514300, 4710300; 515800, 4704300; 515800, 4704600; (i) From USGS 1:24,000 quadrangle 514100, 4710300; 514100, 4709900; 516000, 4704600; 516000, 4704700; map Eagle Point, Oregon, land bounded 513900, 4709900; returning to 513900, 515500, 4704700; 515500, 4704800; by the following UTM 10 NAD 83 4709700. 515400, 4704800; 515400, 4705100; coordinates (E, N): 517700, 4704000; (5) Subunit 1B: Jackson County, 515500, 4705100; 515500, 4705200; 517200, 4704000; 517200, 4704100; Oregon. 515700, 4705200; 515700, 4705300; 517100, 4704100; 517100, 4704300;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00096 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59979

517000, 4704300; 517000, 4704700; 518400, 4696900; 518300, 4696900; coordinates (E, N): 515200, 4695800; 516900, 4704700; 516900, 4704900; 518300, 4697000; 518200, 4697000; 515000, 4695800; 515000, 4695900; 517000, 4704900; 517000, 4705000; 518200, 4697100; 518100, 4697100; 514500, 4695900; 514500, 4695800; 517100, 4705000; 517100, 4705100; 518100, 4697200; 517600, 4697200; 514300, 4695800; 514300, 4695900; 517600, 4705100; 517600, 4705000; 517600, 4697300; 517300, 4697300; 514200, 4695900; 514200, 4696000; 517800, 4705000; 517800, 4704900; 517300, 4697400; 517100, 4697400; 514100, 4696000; 514100, 4695900; 517900, 4704900; 517900, 4704800; 517100, 4697600; 517000, 4697600; 514000, 4695900; 514000, 4695800; 519100, 4704800; 519100, 4704700; 517000, 4697800; 516900, 4697800; 513900, 4695800; 513900, 4695900; 519300, 4704700; 519300, 4704600; 516900, 4698400; 517300, 4698400; 513800, 4695900; 513800, 4696600; 519400, 4704600; 519400, 4704300; 517300, 4698300; 517500, 4698300; 513500, 4696600; 513500, 4696800; 519100, 4704300; 519100, 4704200; 517500, 4698200; 517600, 4698200; 515600, 4696800; 515600, 4696600; 518600, 4704200; 518600, 4704100; 517600, 4698300; 517900, 4698300; 515500, 4696600; 515500, 4696400; 517900, 4704100; 517900, 4704200; 517900, 4697800; 518500, 4697800; 515100, 4696400; 515100, 4696300; 517700, 4704200; returning to 517700, 518500, 4697700; 518600, 4697700; 515200, 4696300; returning to 515200, 4704000. 518600, 4697600; 518800, 4697600; 4695800; excluding land bounded by (11) Unit 2A: Jackson County, Oregon. 518800, 4697700; 519100, 4697700; 514700, 4696300; 514700, 4696500; (i) From USGS 1:24,000 quadrangle 519100, 4697600; 519300, 4697600; 514500, 4696500; 514500, 4696400; map Eagle Point, Oregon, land bounded 519300, 4697500; 519400, 4697500; 514300, 4696400; 514300, 4696500; by the following UTM 10 NAD 83 519400, 4697400; 519500, 4697400; 514200, 4696500; 514200, 4696400; coordinates (E, N): 514300, 4698400; 519500, 4697300; 519700, 4697300; 514100, 4696400; 514100, 4696300; 513400, 4698400; 513400, 4698500; 519700, 4697200; 519800, 4697200; 514700, 4696300. 513300, 4698500; 513300, 4698600; 519800, 4697100; 520000, 4697100; (16) Subunit 3A: Jackson County, 513400, 4698600; 513400, 4698700; 520000, 4696800; 519900, 4696800; Oregon. 513500, 4698700; 513500, 4698800; 519900, 4696700; 520400, 4696700; (i) From USGS 1:24,000 quadrangle 513700, 4698800; 513700, 4699000; 520400, 4696600; 520500, 4696600; map Eagle Point, Oregon, land bounded 513800, 4699000; 513800, 4699100; 520500, 4696300; 520400, 4696300; by the following UTM 10 NAD 83 513900, 4699100; 513900, 4699200; 520400, 4696100; 520500, 4696100; coordinates (E, N): 511600, 4698900; 514200, 4699200; 514200, 4698800; 520500, 4696200; 520600, 4696200; 511600, 4699000; 511400, 4699000; 514300, 4698800; 514300, 4698900; 520600, 4696100; 520700, 4696100; 511400, 4699100; 511100, 4699100; 514400, 4698900; 514400, 4699000; 520700, 4695900; 520600, 4695900; 511100, 4699200; 510700, 4699200; 514900, 4699000; 514900, 4698900; 520600, 4695800; 520500, 4695800; 510700, 4699300; 510600, 4699300; 515100, 4698900; 515100, 4699100; 520500, 4695500; 520700, 4695500; 510600, 4699500; 510900, 4699500; 515200, 4699100; 515200, 4699000; 520700, 4695400; 520800, 4695400; 510900, 4699600; 511200, 4699600; 515500, 4699000; 515500, 4698800; returning to 520800, 4694400. 511200, 4699700; 511300, 4699700; 515600, 4698800; 515600, 4699000; (13) Subunit 2C: Jackson County, 511300, 4699900; 511400, 4699900; 515700, 4699000; 515700, 4698900; Oregon. 511400, 4700000; 511500, 4700000; 515800, 4698900; 515800, 4698500; (i) From USGS 1:24,000 quadrangle 511500, 4699900; 511600, 4699900; 515500, 4698500; 515500, 4698700; map Eagle Point, Oregon, land bounded 511600, 4699800; 511700, 4699800; 515400, 4698700; 515400, 4698600; by the following UTM 10 NAD 83 511700, 4699900; 511900, 4699900; 515300, 4698600; 515300, 4698500; coordinates (E, N): 516100, 4697400; 511900, 4698900; returning to 511600, 515100, 4698500; 515100, 4698600; 515000, 4697400; 515000, 4697800; 4698900. 514900, 4698600; 514900, 4698500; 515200, 4697800; 515200, 4697700; (17) Subunit 3B: Jackson County, 514400, 4698500; 514400, 4698600; 515300, 4697700; 515300, 4697800; Oregon. 514300, 4698600; returning to 514300, 516100, 4697800; returning to 516100, (i) From USGS 1:24,000 quadrangle 4698400. 4697400. maps Eagle Point and Sams Valley, (12) Subunit 2B: Jackson County, (14) Subunit 2D: Jackson County, Oregon, land bounded by the following Oregon. Oregon. UTM 10 NAD 83 coordinates (E, N): (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle 511600, 4698900; 511600, 4698600; maps Brownsboro and Eagle Point, map Eagle Point, Oregon, land bounded 511300, 4698600; 511300, 4698700; Oregon, land bounded by the following by the following UTM 10 NAD 83 511200, 4698700; 511200, 4698600; UTM 10 NAD 83 coordinates (E, N): coordinates (E, N): 516200, 4696200; 511000, 4698600; 511000, 4698500; 520800, 4694400; 520700, 4694400; 515900, 4696200; 515900, 4696900; 510700, 4698500; 510700, 4698600; 520700, 4694500; 520500, 4694500; 516100, 4696900; 516100, 4697000; 510500, 4698600; 510500, 4698500; 520500, 4694600; 520400, 4694600; 516500, 4697000; 516500, 4697100; 509600, 4698500; 509600, 4698100; 520400, 4694700; 520300, 4694700; 516800, 4697100; 516800, 4697200; 509400, 4698100; 509400, 4698000; 520300, 4694800; 519900, 4694800; 517000, 4697200; 517000, 4697100; 509200, 4698000; 509200, 4697800; 519900, 4694900; 519500, 4694900; 517200, 4697100; 517200, 4697000; 509300, 4697800; 509300, 4697600; 519500, 4695200; 519400, 4695200; 517300, 4697000; 517300, 4696900; 509400, 4697600; 509400, 4697200; 519400, 4695600; 519300, 4695600; 517400, 4696900; 517400, 4696600; 509500, 4697200; 509500, 4697000; 519300, 4695800; 519200, 4695800; 517200, 4696600; 517200, 4696700; 510100, 4697000; 510100, 4697100; 519200, 4695900; 519100, 4695900; 516800, 4696700; 516800, 4696600; 511700, 4697100; 511700, 4697000; 519100, 4696000; 519000, 4696000; 516300, 4696600; 516300, 4696500; 511900, 4697000; 511900, 4696400; 519000, 4696200; 519300, 4696200; 516200, 4696500; returning to 516200, 510800, 4696400; 510800, 4696300; 519300, 4696300; 519100, 4696300; 4696200. 510600, 4696300; 510600, 4696400; 519100, 4696400; 518900, 4696400; (15) Subunit 2E: Jackson County, 510300, 4696400; 510300, 4696500; 518900, 4696500; 518800, 4696500; Oregon. 509700, 4696500; 509700, 4696600; 518800, 4696400; 518600, 4696400; (i) From USGS 1:24,000 quadrangle 509600, 4696600; 509600, 4696500; 518600, 4696700; 518500, 4696700; map Eagle Point, Oregon, land bounded 508900, 4696500; 508900, 4696600; 518500, 4696800; 518400, 4696800; by the following UTM 10 NAD 83 508600, 4696600; 508600, 4696700;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00097 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59980 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

508400, 4696700; 508400, 4696800; 508200, 4701900; 508200, 4702000; 4480900; 563300, 4481000; 563100, 508300, 4696800; 508300, 4696900; 508100, 4702000; 508100, 4702100; 4480900; 562900, 4480900; 562500, 508200, 4696900; 508200, 4697000; 508000, 4702100; 508000, 4702200; 4481200; 562400, 4481500; 562400, 508100, 4697000; 508100, 4697100; 507900, 4702200; 507900, 4702300; 4481700; 562300, 4482400; 562000, 508000, 4697100; 508000, 4697300; 507800, 4702300; 507800, 4702400; 4482500; 561900, 4482800; 561800, 508100, 4697300; 508100, 4697600; 507700, 4702400; 507700, 4702500; 4483300; 561500, 4483700; 561000, 508400, 4697600; 508400, 4697700; 507600, 4702500; 507600, 4702400; 4484000; 560700, 4485400; 560700, 508600, 4697700; 508600, 4697800; 507500, 4702400; 507500, 4702300; 4486500; 560800, 4486700; 561000, 508500, 4697800; 508500, 4698000; 507300, 4702300; 507300, 4702200; 4486900; 561200, 4487000; 561300, 508400, 4698000; 508400, 4698400; 507400, 4702200; 507400, 4702100; 4487600; 561600, 4487900; 562000, 508500, 4698400; 508500, 4698500; 507600, 4702100; 507600, 4702000; 4487900; 562500, 4487400; 562700, 508800, 4698500; 508800, 4698600; 507700, 4702000; 507700, 4701800; 4487100; 562900, 4487200; 563200, 508900, 4698600; 508900, 4698300; 507800, 4701800; 507800, 4701700; 4487200; 563300, 4487000; 563300, 509000, 4698300; 509000, 4698400; 507900, 4701700; 507900, 4701400; 4486700; 563800, 4486400; 564300, 509100, 4698400; 509100, 4698600; 507700, 4701400; 507700, 4701500; 4484700; 564300, 4484400; 564700, 509200, 4698600; 509200, 4698700; 507600, 4701500; 507600, 4701600; 4483800; 564900, 4483600; 564900, 509500, 4698700; 509500, 4698900; 507300, 4701600; 507300, 4701700; 4483400; 564500, 4483000; 564500, 509800, 4698900; 509800, 4699000; 507100, 4701700; 507100, 4701800; 4482800; 564600, 4482700; 564600, 510100, 4699000; 510100, 4699100; 507000, 4701800; 507000, 4701900; 4482400; 564400, 4482100; 564500, 511000, 4699100; 511000, 4699000; 506900, 4701900; 506900, 4702000; 4481700; 564500, 4481000; returning to 511300, 4699000; 511300, 4698900; 506800, 4702000; 506800, 4702200; 564200, 4480800. returning to 511600, 4698900; excluding 506700, 4702200; 506700, 4702400; (22) Unit 6: Tehama County, land bounded by 508600, 4697100; 506600, 4702400; 506600, 4702500; California. 508600, 4697300; 508500, 4697300; 506500, 4702500; 506500, 4702700; (i) From USGS 1:24,000 quadrangle 508500, 4697100; 508600, 4697100; and 506600, 4702700; 506600, 4702900; maps Corning, Gerber, Henleyville, Red land bounded by 509100, 4697700; 506700, 4702900; 506700, 4703100; Bluff East, Red Bluff West, and West of 509100, 4697800; 508800, 4697800; 506800, 4703100; 506800, 4703400; Gerber, California, land bounded by the 508800, 4697700; 509100, 4697700. 507000, 4703400; 507000, 4703500; following UTM 10 NAD 83 coordinates (18) Subunit 3C: Jackson County, 507200, 4703500; 507200, 4703400; (E, N): 555600, 4423000; 555100, Oregon. 507300, 4703400; 507300, 4703300; 4423000; 554600, 4424900; 555100, (i) From USGS 1:24,000 quadrangle 507800, 4703300; 507800, 4703200; 4425600; 557200, 4426300; 557800, map Sams Valley, Oregon, land 507900, 4703200; 507900, 4703100; 4426800; 558300, 4426500; 559500, bounded by the following UTM 10 NAD 508000, 4703100; 508000, 4703000; 4428300; 558200, 4428200; 557800, 83 coordinates (E, N): 508300, 4695000; 508100, 4703000; 508100, 4702900; 4428500; 557400, 4429300; 558000, 507800, 4695000; 507800, 4695200; 508200, 4702900; 508200, 4702800; 4429900; 558600, 4430000; 558600, 507400, 4695200; 507400, 4695400; 508300, 4702800; 508300, 4702700; 4431100; 560000, 4431600; 559200, 506900, 4695400; 506900, 4695800; 508400, 4702700; 508400, 4702500; 4431900; 558300, 4432000; 557400, 506800, 4695800; 506800, 4695900; 508500, 4702500; 508500, 4702300; 4432200; 557400, 4432600; 558400, 506400, 4695900; 506400, 4695800; 508600, 4702300; 508600, 4701900; 4433100; 558400, 4433600; 557800, 505600, 4695800; 505600, 4696000; 508800, 4701900; 508800, 4701500; 4433600; 557500, 4433800; 557300, 505800, 4696000; 505800, 4696700; 508700, 4701500; 508700, 4701400; 4434400; 555100, 4434800; 555100, 506200, 4696700; 506200, 4696800; 508600, 4701400; returning to 508600, 4435400; 557000, 4436200; 557900, 506100, 4696800; 506100, 4697300; 4701300. 4439000; 557000, 4439000; 554600, 506200, 4697300; 506200, 4697600; (20) Subunit 4B: Jackson County, 4437400; 553200, 4437000; 553200, 506800, 4697600; 506800, 4697500; Oregon. 4437600; 554500, 4438100; 555400, 506900, 4697500; 506900, 4697300; (i) From USGS 1:24,000 quadrangle 4439700; 556500, 4439800; 556500, 506800, 4697300; 506800, 4697200; map Sams Valley, Oregon, land 4441800; 558500, 4442600; 558500, 506700, 4697200; 506700, 4696700; bounded by the following UTM 10 NAD 4443000; 557400, 4442900; 557000, 507000, 4696700; 507000, 4697000; 83 coordinates (E, N): 504000, 4698900; 4443000; 556800, 4443400; 557500, 506900, 4697000; 506900, 4697200; 503800, 4698900; 503800, 4699000; 4444300; 558000, 4443700; 558400, 507000, 4697200; 507000, 4697400; 503700, 4699000; 503700, 4699400; 4443700; 559900, 4444000; 559900, 507100, 4697400; 507100, 4697500; 503800, 4699400; 503800, 4699800; 4444700; 559800, 4444700; 559800, 507200, 4697500; 507200, 4697400; 503700, 4699800; 503700, 4700900; 4445400; 560900, 4446100; 562200, 507300, 4697400; 507300, 4697300; 503800, 4700900; 503800, 4700800; 4445400; 563000, 4445800; 563300, 507400, 4697300; 507400, 4697100; 503900, 4700800; 503900, 4700700; 4445800; 563500, 4444400; 564400, 507500, 4697100; 507500, 4697000; 504000, 4700700; 504000, 4700600; 4444400; 565300, 4443400; 566400, 507600, 4697000; 507600, 4696900; 504300, 4700600; 504300, 4700500; 4443200; 566500, 4442400; 566000, 507700, 4696900; 507700, 4696700; 504400, 4700500; 504400, 4699500; 4441500; 565400, 4441200; 565500, 507900, 4696700; 507900, 4696000; 504200, 4699500; 504200, 4699200; 4441000; 566000, 4440600; 567500, 508300, 4696000; returning to 508300, 504100, 4699200; 504100, 4699100; 4441200; 567900, 4441200; 568900, 4695000. 504000, 4699100; returning to 504000, 4440400; 568400, 4440200; 568800, (19) Subunit 4A: Jackson County, 4698900. 4439400; 569400, 4439600; 570300, Oregon. (21) Unit 5: Shasta County, California. 4437900; 569300, 4438000; 568100, (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle 4438300; 567000, 4438000; 566800, map Sams Valley, Oregon, land maps Balls Ferry, Cottonwood, 4437300; 566200, 4437200; 566200, bounded by the following UTM 10 NAD Enterprise, and Palo Cedro, California, 4438200; 565900, 4438400; 565400, 83 coordinates (E, N): 508600, 4701300; land bounded by the following UTM 10 4438000; 564200, 4438000; 564200, 508400, 4701300; 508400, 4701500; NAD 83 coordinates (E, N): 564200, 4437300; 563700, 4436700; 564800, 508300, 4701500; 508300, 4701900; 4480800; 564000, 4480800; 563600, 4436800; 565100, 4435800; 563900,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00098 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59981

4434600; 563900, 4432900; 563500, 4407500; 598100, 4407500; 598100, 4399500; 607200, 4399100; 607400, 4432100; 567300, 4431600; 567900, 4407100; 597700, 4406800; 597800, 4399100; 607700, 4398100; 607700, 4427300; 566300, 4426600; 565000, 4406700; 597500, 4406500; 597300, 4397800; 606200, 4396500; 606200, 4425900; 563700, 4425800; 562000, 4406700; 597100, 4406600; 597500, 4395800; returning to 604600, 4395600. 4424700; 560400, 4424700; 558600, 4406100; 597100, 4405900; 597600, (26) Unit 10: Colusa and Glenn 4423800; returning to 555600, 4423000. 4405100; 598000, 4405300; 598400, counties, California. (23) Unit 7: Butte and Tehama 4404700; 598500, 4404800; 598200, (i) From USGS 1:24,000 quadrangle counties, California. 4405300; 599000, 4405800; 598900, maps Logandale, Maxwell, Moulton (i) From USGS 1:24,000 quadrangle 4406100; 598700, 4406000; 598500, Weir, and Princeton, California, land maps Balls Ferry, Cottonwood, 4406000; 598500, 4407200; 598300, bounded by the following UTM 10 NAD Enterprise, and Palo Cedro, California, 4407200; 598300, 4407500; 598200, 83 coordinates (E, N): 572900, 4357400; land bounded by the following UTM 10 4407800; 598700, 4408400; 599900, 571200, 4357400; 571200, 4358200; NAD 83 coordinates (E, N): 602400, 4409000; 600100, 4409000; 600300, 570400, 4358200; 570400, 4359000; 4401600; 601900, 4401800; 601800, 4408800; 600300, 4408400; 600000, 569600, 4359000; 569500, 4360500; 4402000; 601500, 4401900; 601000, 4408100; 600400, 4407600; 599500, 569300, 4362200; 569500, 4363300; 4401900; 600400, 4402100; 599600, 4406700; 599500, 4406200; 600300, 569500, 4367200; 570000, 4367200; 4402100; 599400, 4403400; 599100, 4406000; 601200, 4405600; 601800, 569900, 4368400; 570300, 4368400; 4403200; 598300, 4403400; 597100, 4405600; 602000, 4405500; 602200, 571000, 4367600; 571000, 4367800; 4403700; 596400, 4404200; 596300, 4405200; 602500, 4405200; 602700, 570700, 4368500; 570900, 4368800; 4404800; 595100, 4405000; 595100, 4404900; 603300, 4404700; 604500, 571500, 4368800; 571900, 4368300; 4405600; 595400, 4406000; 595400, 4404200; 605200, 4404200; 605600, 571900, 4367600; 572100, 4367600; 4407100; 595500, 4407100; 595700, 4404000; 605600, 4403600; 605100, 572400, 4368100; 572400, 4368400; 4407300; 595700, 4407400; 596100, 4403300; 604700, 4403400; 604500, 572600, 4368900; 572800, 4368900; 4407400; 596400, 4408000; 596400, 4403300; 604400, 4402800; 603600, 573000, 4368100; 573400, 4368000; 4408100; 596100, 4408200; 596100, 4402100; 602900, 4402100; returning to 573800, 4367600; 574100, 4367300; 4408400; 596200, 4408600; 595900, 602400, 4401600. 574400, 4367200; 574500, 4366400; 4408800; 595700, 4408800; 595500, (24) Unit 8: Glenn and Tehama 574900, 4366400; 574900, 4365600; 4408200; 594300, 4408200; 594100, counties, California. 574700, 4365500; 574400, 4364100; 4408300; 594000, 4408400; 593600, (i) From USGS 1:24,000 quadrangle 575200, 4363900; 575600, 4363600; 4408500; 593400, 4408200; 592600, maps Black Butte Dam and Kirkwood, 575100, 4362400; 575600, 4361400; 4408200; 592500, 4408700; 592100, California, land bounded by the 575100, 4360700; 576000, 4359600; 4408500; 592000, 4408700; 591400, following UTM 10 NAD 83 coordinates 575500, 4358900; 575700, 4358300; 4408700; 590700, 4408700; 590400, (E, N): 560000, 4405200; 559200, 575900, 4357700; 575300, 4357800; 4408300; 589900, 4408300; 589000, 4405700; 558600, 4405800; 558600, 575000, 4357700; 574700, 4357700; 4408600; 589000, 4409300; 589100, 4406400; 558600, 4408000; 558900, 573600, 4357800; 573500, 4358200; 4409900; 588900, 4410200; 588200, 4408700; 559100, 4408700; 559400, 572900, 4358200; returning to 572900, 4410300; 588200, 4411000; 587900, 4407000; 560600, 4407000; 560600, 4357400. 4411400; 587900, 4412000; 587900, 4407400; 561000, 4407400; 561000, (27) Unit 11: Yuba County, California. 4412400; 587600, 4412700; 587600, 4411400; 561800, 4411400; 565600, (i) From USGS 1:24,000 quadrangle 4413400; 584200, 4413400; 583100, 4411400; 565600, 4410600; 568400, maps Browns Valley and Wheatland, 4413100; 582900, 4413400; 582900, 4410600; 568400, 4411400; 570500, California, land bounded by the 4415900; 582000, 4418300; 581800, 4411400; 570800, 4411700; 571400, following UTM 10 NAD 83 coordinates 4419200; 582000, 4419500; 581400, 4411500; 571500, 4411000; 572100, (E, N): 636300, 4327700; 635600, 4420000; 581400, 4420400; 581800, 4410900; 572100, 4410100; 571800, 4327700; 635300, 4327800; 635300, 4420700; 581600, 4421000; 583200, 4409600; 570500, 4409000; 570200, 4328800; 634800, 4329000; 634800, 4422600; 583500, 4423600; 585200, 4409000; 570200, 4409300; 569700, 4329700; 634600, 4329900; 633800, 4424500; 586000, 4424500; 587500, 4409300; 569700, 4409000; 569800, 4329900; 633600, 4330100; 633500, 4426100; 588200, 4426500; 588600, 4407700; 569900, 4407000; 569800, 4330100; 632800, 4329700; 632700, 4429100; 588800, 4430200; 589500, 4406100; 569800, 4405500; 569400, 4328800; 631300, 4328800; 631300, 4429500; 589500, 4428600; 591400, 4405500; 568600, 4405900; 568300, 4329300; 631400, 4329300; 631400, 4425800; 592600, 4424100; 593400, 4405900; 567500, 4405500; 567200, 4330600; 632400, 4330700; 632800, 4422300; 594200, 4421100; 595900, 4405500; 565000, 4405500; 564600, 4330700; 633000, 4330900; 633000, 4417800; 595800, 4417300; 595800, 4405800; 564100, 4405800; 563700, 4331300; 633100, 4331500; 633500, 4416600; 596100, 4416600; 596400, 4405600; 563400, 4405400; 562000, 4331700; 633800, 4331500; 633800, 4416800; 596600, 4416800; 597100, 4405700; 561100, 4405900; 560300, 4332300; 631500, 4332200; 631500, 4416400; 597100, 4415600; 596800, 4405900; 560200, 4405300; returning to 4333900; 632400, 4333900; 632400, 4415200; 597100, 4415000; 597800, 560000, 4405200. 4335400; 633300, 4335800; 633700, 4415500; 598100, 4415200; 597600, (25) Unit 9: Butte County, California. 4336300; 634100, 4336400; 634900, 4414600; 597600, 4414400; 597300, (i) From USGS 1:24,000 quadrangle 4336700; 635100, 4336600; 635200, 4413800; 597300, 4413300; 598200, maps Chico and Hamlin Canyon, 4336400; 635700, 4336400; 636000, 4413900; 598400, 4413900; 598400, California, land bounded by the 4336400; 636100, 4335900; 635900, 4413600; 597400, 4411900; 597600, following UTM 10 NAD 83 coordinates 4335800; 636000, 4335200; 636500, 4411900; 598300, 4412700; 598500, (E, N): 604600, 4395600; 604000, 4335100; 637100, 4335300; 637400, 4413300; 598900, 4413300; 598900, 4395700; 603900, 4396700; 603600, 4334700; 637800, 4334700; 637700, 4411800; 599400, 4411700; 599800, 4396800; 603600, 4398000; 602900, 4333600; 638200, 4333400; 638200, 4411700; 599800, 4411000; 597700, 4398200; 603000, 4398800; 603100, 4332600; 637600, 4332600; 637600, 4409400; 597000, 4408500; 596800, 4399000; 602600, 4399400; 602600, 4331900; 636900, 4332100; 636700, 4408300; 596800, 4407500; 597300, 4399600; 603500, 4399800; 604700, 4332300; 636600, 4332500; 636100, 4407500; 597300, 4408000; 597900, 4400200; 605100, 4399600; 606500, 4334000; 636700, 4334300; 636600,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00099 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59982 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

4334500; 636000, 4334200; 635400, 642300, 4308200; 641500, 4308300; 654500, 4300500; 654300, 4300500; 4336000; 634500, 4336000; 634500, 641400, 4310400; 640500, 4310400; 654100, 4300700; 653800, 4301300; 4335100; 634400, 4334700; 635100, 640600, 4306700; 640600, 4306200; 653500, 4301100; 653900, 4300600; 4332600; 636000, 4330500; 636400, 640200, 4306000; 640000, 4306100; 653900, 4300300; 653200, 4299800; 4330300; 636500, 4329300; 637100, 639900, 4306300; 639900, 4306700; 652900, 4300000; 653000, 4301100; 4328800; 636900, 4327900; returning to 639300, 4306700; 638700, 4306300; 652600, 4301200; 652100, 4301000; 636300, 4327700. 638300, 4306300; 638100, 4307000; 651700, 4300800; 651700, 4300300; (28) Unit 12: Placer and Sacramento 638000, 4307100; 637500, 4307100; 651100, 4299700; 651100, 4299200; counties, California. 637500, 4308400; 638800, 4308400; 650800, 4298900; 648900, 4298800; (i) From USGS 1:24,000 quadrangle 639000, 4309700; 639300, 4309700; 649200, 4298100; 649600, 4298100; maps Citrus Heights, Gold Hill, Lincoln, 639300, 4310500; 639800, 4310500; 649700, 4297900; 649100, 4297300; Pleasant Grove, Rio Linda, Rocklin, 639900, 4310300; 640500, 4310700; 649000, 4297100; 648800, 4297100; Roseville, and Sheridan, California, land 640500, 4311000; 640900, 4311000; 648300, 4296900; 647800, 4296400; bounded by the following UTM 10 NAD 641100, 4311700; 642000, 4311700; 647600, 4296000; 647000, 4296000; 83 coordinates (E, N): 636500, 4287700; 642300, 4311000; 642200, 4310800; 647100, 4295600; 647500, 4295400; 635700, 4287700; 635100, 4288300; 642200, 4310500; 643200, 4310800; 647500, 4295100; 647200, 4295000; 634500, 4288300; 634100, 4288500; 643700, 4310500; 644100, 4311100; 646900, 4294300; 646500, 4294300; 633600, 4288700; 632800, 4288700; 644900, 4311100; 645100, 4310900; 646600, 4295100; 646800, 4295200; 632800, 4289200; 633100, 4289200; 645400, 4310900; 645700, 4310600; 646800, 4295700; 646500, 4295700; 634100, 4289900; 634100, 4290500; 645800, 4310700; 645800, 4311300; 646300, 4296500; 647600, 4296500; 634400, 4290600; 634100, 4290800; 646400, 4311900; 646800, 4311900; 647600, 4297100; 648500, 4297700; 633700, 4290800; 633500, 4291200; 648500, 4297900; 647600, 4297900; 633700, 4291500; 634600, 4291400; 646800, 4313700; 647300, 4314200; 648500, 4314200; 648000, 4313200; 647600, 4299300; 646400, 4299300; 634900, 4291200; 634900, 4290500; 646400, 4297200; 645800, 4297200; 635700, 4290400; 637100, 4290400; 648000, 4310000; 649000, 4309800; 649100, 4309200; 647400, 4309200; 645800, 4295400; 643800, 4295400; 638100, 4290700; 637900, 4292300; 643200, 4295000; 642500, 4295000; 647200, 4308900; 646900, 4308900; 638300, 4293000; 638800, 4293000; 642600, 4291900; 642600, 4290400; 646700, 4308600; 646300, 4308600; 638900, 4294200; 637100, 4294200; 642600, 4290000; 642400, 4289800; 646300, 4308520; 646300, 4308300; 637100, 4295500; 638100, 4295500; 641600, 4289500; 640900, 4289500; 646500, 4308100; 646700, 4307900; 638300, 4295900; 638900, 4295900; 640500, 4289200; 637500, 4289200; 647000, 4307900; 647000, 4308100; 639100, 4295400; 640000, 4295400; 637500, 4288700; 637400, 4288400; 647100, 4308400; 648000, 4308400; 640000, 4295800; 639300, 4296200; 636700, 4288400; 636700, 4287800; 648200, 4308300; 648200, 4307600; 639200, 4296700; 639100, 4296900; returning to 636500, 4287700. 639000, 4298300; 638600, 4297500; 648600, 4307600; 648600, 4307200; (29) Unit 13: Sacramento County, 637500, 4297400; 636900, 4297100; 648800, 4307200; 648800, 4306800; California. 636300, 4296900; 635600, 4297200; 648400, 4306800; 648300, 4307100; (i) From USGS 1:24,000 quadrangle 635100, 4297200; 634300, 4297100; 647100, 4307100; 647100, 4307400; maps Buffalo Creek, Carmichael, Elk 633500, 4297100; 633500, 4297800; 646900, 4307600; 646400, 4308000; Grove, Folsom SE and Sloughhouse, 635100, 4297900; 635100, 4298400; 646400, 4307100; 646600, 4307100; California, land bounded by the 635800, 4298600; 635800, 4300000; 646600, 4306500; 646400, 4306500; following UTM 10 NAD 83 coordinates 636000, 4300100; 636000, 4301000; 646200, 4306500; 646200, 4306000; (E, N): 650400, 4257200; 650200, 637800, 4300900; 637800, 4300300; 644800, 4306000; 644700, 4305900; 4257200; 650200, 4258300; 649600, 639200, 4300300; 639200, 4301000; 644700, 4305400; 645500, 4305400; 4258300; 649600, 4257400; 649400, 639800, 4301000; 639800, 4301500; 645600, 4305100; 646200, 4305100; 4257400; 649400, 4259000; 649100, 637600, 4301500; 637600, 4301900; 646400, 4304700; 647000, 4304700; 4259000; 649100, 4258500; 648500, 638400, 4302200; 639100, 4302300; 647200, 4304400; 647700, 4304500; 4258500; 648500, 4257400; 648200, 639900, 4302200; 640000, 4301800; 648700, 4304200; 648800, 4304600; 4257400; 648100, 4258300; 647700, 640800, 4301800; 640800, 4302500; 648800, 4304800; 649200, 4305300; 4258600; 647700, 4258900; 648000, 641200, 4302700; 641500, 4302700; 649500, 4305300; 649700, 4305600; 4259300; 647700, 4259600; 646800, 641600, 4302200; 641900, 4301900; 650300, 4305700; 650600, 4305100; 4259200; 646500, 4258800; 646500, 642200, 4302300; 642800, 4301900; 650800, 4304800; 650800, 4304300; 4258700; 645800, 4258700; 646100, 643400, 4301400; 643700, 4302100; 651700, 4304200; 651700, 4303600; 4259000; 646100, 4260000; 646400, 644300, 4302300; 644400, 4302600; 653100, 4303600; 654200, 4303200; 4260100; 646600, 4260400; 646100, 644400, 4302800; 643400, 4302800; 654200, 4303500; 654900, 4304200; 4260800; 645300, 4261200; 645000, 642600, 4303500; 642800, 4304000; 655600, 4304200; 657900, 4305100; 4260700; 644800, 4260700; 644400, 643500, 4304400; 644000, 4304700; 658500, 4304600; 659200, 4304400; 4261400; 644400, 4262400; 643800, 644000, 4306700; 642400, 4306700; 659200, 4304100; 658800, 4303900; 4262400; 643600, 4262800; 643200, 642800, 4306900; 643600, 4307100; 657800, 4303900; 657100, 4303200; 4262800; 643200, 4263300; 643500, 643900, 4307100; 644100, 4307100; 656700, 4303200; 656700, 4303800; 4263300; 643700, 4263200; 643700, 644100, 4307000; 644500, 4307000; 656600, 4303800; 656100, 4303600; 4263800; 645200, 4263800; 645200, 644800, 4306800; 645000, 4306800; 655200, 4303000; 655000, 4303200; 4262800; 644800, 4262700; 644800, 645400, 4307100; 645500, 4307100; 654700, 4303000; 654500, 4302700; 4262300; 645300, 4262300; 645300, 645500, 4307300; 645500, 4308300; 652500, 4302700; 652400, 4302600; 4261900; 645000, 4261700; 645300, 643900, 4308300; 643900, 4307400; 652700, 4302100; 652900, 4301500; 4261500; 645400, 4261700; 646000, 643700, 4307400; 643300, 4308900; 653300, 4301800; 653300, 4302400; 4262100; 645800, 4262400; 646000, 643100, 4308400; 642800, 4308100; 653600, 4302400; 653900, 4302000; 4262700; 646400, 4262600; 646700, 642600, 4307500; 642300, 4307400; 654400, 4302300; 654700, 4302100; 4262700; 646600, 4263900; 647400, 642000, 4307000; 641500, 4307000; 654600, 4301900; 654400, 4301400; 4263900; 647600, 4263700; 647800, 641500, 4307600; 642300, 4307600; 654500, 4300800; 654700, 4300800; 4264300; 648100, 4264300; 648300,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00100 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59983

4264100; 648600, 4264400; 647400, 4263000; 657700, 4262900; 657700, 4246400; 661700, 4246400; 661700, 4265200; 647200, 4265200; 647000, 4262800; 657400, 4262700; 656700, 4246800; 661900, 4247000; 661600, 4264500; 645900, 4264600; 645300, 4262700; 656500, 4262500; 656300, 4247300; 661100, 4247300; 660600, 4265100; 645600, 4265500; 645800, 4262500; 656300, 4262000; 655900, 4246900; 659900, 4246900; 659500, 4265600; 646000, 4266200; 646300, 4261800; 655800, 4261200; 656100, 4247300; 659500, 4248400; 658600, 4266600; 646300, 4268100; 646600, 4260700; 655900, 4260300; 655200, 4248400; 658600, 4246800; 658400, 4268400; 646600, 4268700; 646700, 4260700; 654900, 4260400; 653500, 4246600; 658400, 4246100; 658100, 4268800; 646800, 4268800; 647100, 4261300; 653200, 4261000; 653100, 4246000; 657400, 4246000; 657400, 4268400; 647100, 4268200; 646900, 4262300; 652800, 4262300; 652800, 4245000; 657000, 4244900; 656700, 4268000; 646900, 4267500; 649100, 4261400; 652600, 4261300; 652300, 4244800; 656400, 4245100; 656100, 4268900; 649300, 4269000; 649600, 4261400; 651700, 4261800; 651600, 4245200; 656100, 4246100; 654900, 4269600; 649800, 4269600; 649800, 4262100; 650700, 4262100; 650700, 4246600; 654900, 4245800; 655100, 4268700; 650400, 4269000; 650800, 4261800; 651100, 4261700; 651200, 4245200; 655100, 4244900; 654600, 4268800; 650900, 4268900; 650800, 4261400; 651200, 4260600; 651000, 4244900; 654600, 4244100; 654600, 4269200; 650300, 4269700; 650100, 4260400; 650400, 4260400; 650400, 4243400; 653900, 4243300; 653300, 4269700; 650000, 4270100; 650300, 4259300; 651600, 4259300; 651500, 4243500; 653400, 4244300; 652200, 4270200; 650600, 4270000; 650700, 4260900; 652000, 4260900; 652100, 4244500; 652000, 4244800; 652300, 4270100; 650700, 4270300; 650900, 4260300; 653000, 4260400; 653200, 4245200; 652800, 4245200; 653500, 4270400; 651200, 4270800; 652200, 4260300; 653900, 4260400; 654700, 4245300; 653600, 4245800; 653300, 4269200; 652300, 4269400; 652500, 4259900; 654000, 4258600; 653700, 4246000; 653300, 4247300; 653600, 4269700; 652400, 4270100; 652200, 4258600; 653000, 4259300; 652200, 4247300; 653700, 4247100; 654200, 4271000; 652700, 4271000; 652700, 4259800; 652100, 4259600; 652800, 4247100; 654600, 4247500; 654600, 4270500; 653100, 4270500; 653400, 4259100; 652800, 4258600; 652400, 4248600; 654800, 4248900; 654600, 4270800; 653600, 4270800; 653800, 4258200; 652300, 4258100; 652000, 4249100; 654500, 4249400; 655000, 4270400; 654400, 4270800; 654800, 4258100; 651400, 4258400; 650700, 4249400; 655100, 4249000; 655800, 4257600; returning to 650400, 4257200. 4270900; 655200, 4271100; 655500, 4249000; 656300, 4249700; 656600, (30) Unit 14: Amador, Sacramento, 4271100; 655800, 4270900; 656000, 4249500; 657200, 4250200; 656700, and San Joaquin counties, California. 4270900; 657000, 4272200; 657400, (i) From USGS 1:24,000 quadrangle 4251100; 656500, 4251400; 656500, 4272200; 657700, 4272500; 658200, maps Carbondale, Clay, Galt, Goose 4252600; 657000, 4253700; 657300, 4273800; 658900, 4274000; 659200, Creek, Irish Hill, and Sloughhouse, 4254500; 657200, 4254900; 656700, 4273700; 659400, 4273400; 659400, California, land bounded by the 4255100; 656800, 4255400; 657000, 4273100; 659100, 4272900; 658700, following UTM 10 NAD 83 coordinates 4255500; 657200, 4255500; 657400, 4272900; 658500, 4272500; 658800, (E, N): 660400, 4236800; 660300, 4255300; 657400, 4255100; 657800, 4272400; 659500, 4272400; 659500, 4236800; 660100, 4237500; 659700, 4255100; 657900, 4255800; 658100, 4271500; 660300, 4271500; 661100, 4237700; 659700, 4238100; 660200, 4255900; 658300, 4255800; 658400, 4271300; 661100, 4271800; 661500, 4238400; 659700, 4238900; 659500, 4255600; 658200, 4255300; 658200, 4272400; 661700, 4272400; 661900, 4238900; 659300, 4238100; 659000, 4255000; 658300, 4254700; 658200, 4272300; 661900, 4271700; 662200, 4238300; 658800, 4238400; 658300, 4254500; 657800, 4254500; 657800, 4272200; 662200, 4272600; 662400, 4238400; 658200, 4238300; 657800, 4254200; 658100, 4254000; 658900, 4272700; 662600, 4272700; 662900, 4238300; 657100, 4239000; 657200, 4253500; 659200, 4253600; 659900, 4272400; 663300, 4272400; 663400, 4239400; 657400, 4239700; 658000, 4254700; 660000, 4255100; 660200, 4272200; 663400, 4271900; 663100, 4239900; 661500, 4239900; 661500, 4255400; 660700, 4255400; 660800, 4271700; 662600, 4271200; 662300, 4241900; 661900, 4242100; 661600, 4256000; 660600, 4256200; 660300, 4270600; 661900, 4270700; 661900, 4242400; 661000, 4242500; 660700, 4256100; 660100, 4256000; 659500, 4271000; 661600, 4271000; 661400, 4241900; 660400, 4241500; 659400, 4256200; 659800, 4256900; 660400, 4270800; 661000, 4270800; 660700, 4241500; 659400, 4241800; 659200, 4256800; 660600, 4256700; 660700, 4270300; 660600, 4270000; 660100, 4241800; 659200, 4241700; 659000, 4256800; 660500, 4257100; 660700, 4269800; 660400, 4268700; 660800, 4241600; 658700, 4241700; 658500, 4257500; 660100, 4257800; 659600, 4267700; 661200, 4268100; 661400, 4241700; 658500, 4240500; 657800, 4257800; 659300, 4258100; 659500, 4268100; 661400, 4267400; 661800, 4240400; 657000, 4240400; 657000, 4258400; 659700, 4258500; 659500, 4267400; 662100, 4266900; 662000, 4241300; 656500, 4241300; 655900, 4258800; 659600, 4259100; 659500, 4266300; 661600, 4266400; 661200, 4241600; 655100, 4241200; 654900, 4259300; 659900, 4259900; 660100, 4267200; 660900, 4267200; 660800, 4241900; 655800, 4242400; 655800, 4260000; 660300, 4259900; 660500, 4266500; 660100, 4266000; 660600, 4243100; 656200, 4243100; 656600, 4259600; 660700, 4259500; 661200, 4265800; 660900, 4266100; 661200, 4242600; 657100, 4242700; 658600, 4259900; 661500, 4259900; 661600, 4265900; 661300, 4265500; 661300, 4244000; 658600, 4244700; 659100, 4259800; 661600, 4259300; 661900, 4264900; 661700, 4264800; 661700, 4244800; 659100, 4245600; 659700, 4259300; 662100, 4259600; 662400, 4264400; 661400, 4264100; 660600, 4245600; 659800, 4245100; 659400, 4259600; 662700, 4259100; 662900, 4264400; 660600, 4264700; 660800, 4244900; 659700, 4244500; 660000, 4258900; 662800, 4258700; 662700, 4264900; 660500, 4265300; 660100, 4244500; 660100, 4243100; 661700, 4258500; 662000, 4258100; 661500, 4265200; 660300, 4264600; 659800, 4243100; 662600, 4243000; 663300, 4257700; 661200, 4257100; 661600, 4264500; 659700, 4264000; 659300, 4243300; 663000, 4243900; 662500, 4256700; 662000, 4256700; 661900, 4263900; 659100, 4263700; 658800, 4243900; 662700, 4244700; 663000, 4256400; 661900, 4256100; 662000, 4263700; 658500, 4264200; 658500, 4244900; 663100, 4245400; 664200, 4255800; 662600, 4256000; 662800, 4264400; 658000, 4265500; 657600, 4245600; 664500, 4245600; 664600, 4256200; 663300, 4256400; 663900, 4265000; 657500, 4264300; 657900, 4245200; 665000, 4245300; 664800, 4256700; 664200, 4257300; 664300, 4263900; 657700, 4263600; 657200, 4246100; 664600, 4246300; 663700, 4257600; 664600, 4257800; 664900, 4263600; 657200, 4263100; 657600, 4246500; 662500, 4246100; 662100, 4258000; 665000, 4258500; 665400,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00101 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59984 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

4258700; 665900, 4258800; 666500, 4241800; 668800, 4241800; 668600, 4233000; 584500, 4233400; 584000, 4258800; 666700, 4258600; 666600, 4241500; 668200, 4241700; 668000, 4233300; 584200, 4233700; 584500, 4258200; 666300, 4258000; 666100, 4242000; 667000, 4241300; 666800, 4233900; 584500, 4233800; 584600, 4257400; 666000, 4257300; 666000, 4240700; 666500, 4240100; 666200, 4233800; 584700, 4233700; 584700, 4257000; 666400, 4257000; 666500, 4239900; 664700, 4239800; 664600, 4233600; 584900, 4233600; 584900, 4257600; 666800, 4257600; 666900, 4239600; 664600, 4238900; 663900, 4233400; 585700, 4233300; 585700, 4257400; 666900, 4257100; 666700, 4238500; 663800, 4238500; 662800, 4233000; 586100, 4233000; 586200, 4256900; 666800, 4256700; 666700, 4237400; 662400, 4237500; 662000, 4233100; 586400, 4233100; 586500, 4256300; 666600, 4256100; 667200, 4237900; 661900, 4237900; 661800, 4233000; 586800, 4233000; 586900, 4256100; 667400, 4256300; 667600, 4237400; 661500, 4237200; 660900, 4233000; 587100, 4232900; 587100, 4256300; 667800, 4256100; 667900, 4237200; returning to 660400, 4236800. 4232800; 587300, 4232700; 587600, 4256300; 668100, 4256300; 668400, (31) Unit 15: Solano County, 4232500; 588600, 4232500; 588600, 4255900; 668600, 4255900; 668800, California. 4232800; 588400, 4233000; 588600, 4256200; 669100, 4256400; 669400, (i) From USGS 1:24,000 quadrangle 4233300; 588700, 4233500; 589300, 4256600; 669500, 4256800; 669200, maps Allendale and Elmira, California, 4233500; 591000, 4233500; 591100, 4257300; 669200, 4257900; 668800, land bounded by the following UTM 10 4233400; 591000, 4233200; 591100, NAD 83 coordinates (E, N): 589700, 4258100; 668700, 4258600; 668500, 4233000; 593900, 4235300; 594000, 4246500; 589500, 4246500; 589500, 4258600; 668000, 4258700; 667900, 4235000; 594300, 4235000; 594800, 4247000; 589300, 4247200; 589400, 4258900; 668100, 4259200; 668500, 4235400; 594000, 4236200; 594500, 4247700; 589600, 4248200; 589800, 4259200; 668800, 4258900; 669700, 4236700; 594000, 4237400; 593500, 4248900; 590100, 4249700; 590500, 4237400; 593500, 4238200; 592500, 4259700; 670000, 4259800; 669700, 4249900; 590800, 4250200; 591300, 4260200; 669800, 4260400; 670000, 4250100; 591500, 4250300; 591500, 4238200; 592500, 4237600; 590400, 4260500; 670200, 4260400; 670700, 4250800; 591900, 4250800; 592100, 4237600; 590400, 4237300; 590200, 4260600; 671200, 4260500; 671500, 4252300; 591600, 4252300; 591300, 4237300; 590200, 4236900; 590400, 4260700; 671700, 4260700; 671800, 4251400; 590500, 4251400; 590600, 4236900; 590400, 4235900; 590900, 4260200; 671700, 4259800; 671400, 4251700; 590900, 4252600; 592900, 4235900; 591700, 4235100; 591000, 4259800; 671200, 4260200; 670900, 4252600; 593900, 4252600; 593900, 4234200; 591000, 4234000; 589400, 4259900; 671000, 4259600; 671000, 4252300; 594700, 4252300; 594700, 4234000; 589000, 4234400; 588500, 4259200; 670700, 4259000; 670700, 4252600; 595500, 4252600; 595900, 4234400; 588500, 4236400; 588400, 4258800; 670800, 4258600; 670600, 4252300; 593500, 4249900; 592300, 4236400; 588400, 4236300; 588200, 4258300; 669500, 4258000; 669700, 4248700; 590500, 4246800; 590200, 4236200; 588000, 4236400; 587700, 4257800; 670000, 4257400; 670100, 4247100; returning to 589700, 4246500. 4236500; 586900, 4236500; 586900, 4257200; 670300, 4257200; 670400, (32) Unit 16: Solano County, 4237200; 587000, 4237300; 586800, 4257000; 670300, 4256600; 670400, California. 4237300; 586800, 4238100; 586100, 4256500; 671000, 4256800; 671500, (i) From USGS 1:24,000 quadrangle 4238700; 585600, 4238700; 585600, 4256800; 671700, 4256900; 672000, maps Birds Landing, Denverton, Dozier, 4238800; 586100, 4239100; 586100, 4256900; 672200, 4256600; 672200, Elmira, Fairfield North, Fairfield South, 4239200; 587800, 4239200; 588100, 4256400; 673000, 4256700; 673400, Liberty Island, and Rio Vista, California, 4239600; 588300, 4239600; 588700, 4256600; 673600, 4256500; 673700, land bounded by the following UTM 10 4239800; 589200, 4240000; 589500, 4256200; 673600, 4255800; 673400, NAD 83 coordinates (E, N): 596500, 4240600; 589500, 4240900; 589100, 4255400; 673300, 4255100; 673800, 4224300; 596200, 4224400; 595700, 4241400; 590100, 4241400; 590600, 4255100; 674000, 4255000; 674200, 4224600; 595700, 4224800; 596000, 4241400; 590800, 4241600; 591100, 4254700; 674300, 4254400; 674700, 4225800; 596300, 4226800; 596200, 4241600; 591100, 4241300; 591600, 4254100; 674800, 4253800; 674700, 4227000; 596100, 4227600; 595800, 4241300; 591600, 4242600; 591700, 4253600; 674300, 4253300; 674600, 4227700; 595600, 4228300; 595400, 4242900; 592200, 4242900; 592200, 4252200; 674700, 4251800; 674600, 4228700; 595500, 4229200; 595500, 4243100; 592400, 4243200; 592700, 4251500; 674100, 4251300; 673700, 4229600; 595700, 4229900; 595700, 4243200; 592700, 4243600; 592900, 4251300; 674100, 4251000; 674200, 4230600; 594500, 4231200; 593800, 4243600; 593300, 4243800; 593700, 4250400; 674500, 4250000; 674400, 4231200; 593600, 4230500; 594200, 4243000; 595000, 4243000; 595400, 4249600; 674100, 4249500; 673700, 4230100; 594400, 4228900; 594400, 4242100; 595400, 4241600; 598600, 4249600; 673400, 4249700; 673100, 4228400; 594000, 4228200; 593400, 4241600; 598600, 4242500; 599400, 4249600; 672300, 4249800; 672000, 4227700; 592600, 4227700; 591400, 4242500; 599200, 4244200; 599500, 4250000; 671500, 4249700; 671200, 4226900; 590900, 4226800; 590300, 4244500; 600400, 4244500; 600700, 4249700; 670800, 4249300; 670800, 4227100; 589500, 4227200; 589000, 4244300; 600700, 4244000; 603400, 4249000; 671100, 4248800; 671100, 4227100; 587500, 4227700; 586800, 4244000; 603500, 4244000; 603900, 4248500; 670800, 4248200; 670400, 4228000; 586400, 4228800; 586000, 4243300; 604000, 4243200; 604000, 4248100; 670400, 4247700; 671200, 4229000; 585700, 4229300; 584900, 4242600; 604700, 4241400; 605600, 4247700; 671600, 4247900; 671900, 4229300; 584700, 4229500; 584600, 4240800; 606200, 4240800; 606300, 4247800; 672000, 4247600; 672500, 4230300; 584800, 4230700; 585200, 4240600; 606300, 4239700; 606500, 4247600; 672500, 4247200; 672000, 4230800; 585600, 4231400; 587400, 4239600; 607100, 4239000; 607700, 4246600; 671600, 4246600; 671800, 4231300; 587600, 4231500; 587800, 4239000; 609300, 4239700; 609500, 4246000; 671200, 4245300; 672200, 4231500; 589000, 4231200; 589100, 4239700; 610300, 4239200; 610700, 4245100; 672400, 4244600; 672600, 4231300; 589100, 4231700; 588600, 4238900; 610700, 4236200; 610800, 4244300; 672600, 4244100; 672000, 4231600; 588200, 4231800; 587800, 4232600; 610900, 4232500; 610900, 4243900; 671600, 4243700; 670900, 4231700; 587100, 4231900; 586600, 4229500; 610500, 4228200; 611000, 4243600; 671100, 4243200; 671700, 4232600; 586300, 4232600; 586000, 4228000; 611900, 4228000; 612400, 4243100; 671700, 4242700; 670700, 4232200; 585600, 4232200; 585000, 4228400; 612800, 4228600; 613100, 4242100; 669800, 4242100; 669300, 4232500; 584900, 4233000; 584500, 4228600; 613400, 4228200; 612900,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00102 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59985

4227800; 612500, 4227300; 611900, 4194000; 608100, 4194300; 608500, 4175900; 610400, 4175900; 610300, 4227100; 611000, 4227100; 610700, 4194900; 608400, 4195100; 608600, 4175200; 610200, 4175100; 610000, 4227400; 610100, 4227200; 609800, 4195300; 608600, 4195900; 609600, 4175000; returning to 610000, 4174800. 4226500; 608100, 4226000; 602900, 4195900; 609500, 4195600; 609200, (38) Unit 20: Stanislaus County, 4225600; 600600, 4225400; 599000, 4195100; 609200, 4195000; 609300, California. 4225300; 597600, 4226000; 597500, 4194900; 609900, 4194800; 610200, (i) From USGS 1:24,000 quadrangle 4225900; 597500, 4225100; 597100, 4194800; 610500, 4195100; 611200, map Ripon, California, land bounded by 4224900; 596700, 4224900; 596700, 4195900; 612100, 4196300; 612500, the following UTM 10 NAD 83 4224400; returning to 596500, 4224300. 4195900; 611700, 4194500; 611700, coordinates (E, N): 660800, 4167200; (33) Unit 17: Napa County, California. 4194300; returning to 611400, 4193400. 660000, 4167200; 659500, 4168800; (i) From USGS 1:24,000 quadrangle (36) Subunit 19B: Contra Costa 661600, 4168800; 661600, 4169400; map Cuttings Wharf, California, land County, California. 662400, 4169400; 662400, 4168300; bounded by the following UTM 10 NAD (i) From USGS 1:24,000 quadrangle 661600, 4168000; 661600, 4168300; 83 coordinates (E, N): 562800, 4228500; maps Byron Hot Springs and Clifton 660300, 4167800; 660600, 4167500; 562500, 4228500; 561500, 4228900; Court Forebay, California, land bounded returning to 660800, 4167200. 561300, 4229000; 560800, 4229200; by the following UTM 10 NAD 83 (39) Unit 21: Mariposa, Merced, and 560600, 4229600; 560400, 4230200; coordinates (E, N): 620500, 4185200; Stanislaus counties, California. 560500, 4230600; 560500, 4230900; 620200, 4185300; 619900, 4185600; (i) From USGS 1:24,000 quadrangle 560800, 4231200; 561400, 4231200; 619600, 4185500; 618200, 4186600; maps Cooperstown, La Grange, Merced 561400, 4230700; 561600, 4230600; 618100, 4187100; 617700, 4187400; Falls, Montpelier, Paulsell, Snelling, 561900, 4230600; 562100, 4230800; 617800, 4187900; 618200, 4188100; and Turlock Lake, California, land 562500, 4230800; 563500, 4231000; 618500, 4188300; 618400, 4188600; bounded by the following UTM 10 NAD 563500, 4230600; 563600, 4230100; 617700, 4188800; 617400, 4189000; 83 coordinates (E, N): 715900, 4154900; 563800, 4229500; 564100, 4229600; 617400, 4189200; 618200, 4189500; 715400, 4155600; 715300, 4156600; 564300, 4229200; 563200, 4228900; 618100, 4189800; 618200, 4190100; 715100, 4156600; 715000, 4156200; 563000, 4228900; returning to 562800, 618700, 4190300; 618700, 4190700; 714800, 4156100; 714800, 4155800; 4228500. 619000, 4191000; 619300, 4191100; 714700, 4155600; 714200, 4155600; (34) Unit 18: San Joaquin and 619600, 4191100; 619800, 4190700; 714000, 4155400; 713800, 4155400; Stanislaus counties, California. 619900, 4190700; 620100, 4190900; 712600, 4155200; 712600, 4157100; (i) From USGS 1:24,000 quadrangle 620400, 4190900; 620500, 4191300; 711200, 4157100; 711100, 4161900; maps Farmington, Linden, Peters, and 621800, 4191300; 622200, 4190700; 706300, 4161800; 706100, 4165000; Valley Springs SW, California, land 622400, 4189900; 623000, 4189300; 703000, 4165100; 702500, 4165200; bounded by the following UTM 10 NAD 622900, 4188700; 621200, 4188700; 702500, 4165900; 702600, 4166600; 83 coordinates (E, N): 676400, 4201300; 620900, 4188700; 620600, 4188400; 703700, 4167200; 704600, 4168200; 675700, 4201400; 674500, 4201400; 620400, 4188600; 620400, 4188100; 704900, 4168200; 705300, 4167800; 673200, 4203100; 672200, 4204600; 620500, 4187900; 620600, 4187800; 705900, 4167800; 707000, 4167500; 672100, 4206300; 672100, 4206500; 620700, 4187700; 620900, 4187700; 707700, 4167600; 708100, 4167300; 671700, 4206500; 671600, 4206700; 621100, 4187500; 620500, 4187100; 709400, 4167300; 709600, 4167300; 671600, 4207100; 673200, 4207100; 620500, 4186900; 621600, 4187400; 710200, 4166800; 711000, 4167600; 673200, 4207400; 674000, 4207400; 622000, 4187000; 622400, 4186400; 711600, 4167800; 712600, 4167800; 673900, 4208800; 673100, 4209500; 622700, 4186000; 622700, 4185700; 713200, 4167600; 713200, 4167200; 673100, 4211900; 673500, 4211900; 622300, 4185300; 621200, 4185300; 712900, 4167200; 712600, 4166900; 673900, 4211700; 673900, 4211900; 621000, 4185500; 620800, 4185500; 711800, 4167000; 711600, 4166800; 674300, 4211900; 674300, 4211600; returning to 620500, 4185200. 711600, 4166600; 711800, 4166500; 674900, 4211400; 675200, 4211500; (37) Subunit 19C: Alameda County, 711800, 4166600; 711900, 4166600; 675200, 4211800; 675500, 4212000; California. 712000, 4166300; 712100, 4166500; 675500, 4212500; 676000, 4212500; (i) From USGS 1:24,000 quadrangle 712200, 4166500; 712300, 4166400; 676800, 4210900; 677200, 4211300; maps Altamont and Livermore, 712500, 4166400; 712500, 4166200; 678700, 4211300; 678800, 4210500; California, land bounded by the 712700, 4166200; 712700, 4166300; 680200, 4210400; 680200, 4209700; following UTM 10 NAD 83 coordinates 712800, 4166300; 713000, 4166100; 681100, 4209700; 681800, 4210300; (E, N): 610000, 4174800; 609100, 712800, 4166000; 712700, 4165800; 682900, 4210100; 682900, 4209600; 4175400; 608600, 4175600; 608400, 712500, 4165800; 712500, 4165600; 681500, 4209100; 681300, 4208500; 4175900; 610000, 4175900; 610000, 712700, 4165600; 712600, 4165400; 680800, 4208400; 680800, 4206100; 4176500; 610400, 4176500; 610400, 712400, 4165500; 712300, 4165400; 680500, 4205700; 680400, 4205100; 4178500; 610800, 4178300; 610800, 712500, 4165300; 712500, 4165200; 679700, 4204600; 679700, 4203300; 4177500; 610800, 4177200; 611200, 712400, 4165100; 712600, 4165100; 678500, 4203300; 678400, 4202700; 4177200; 611900, 4176700; 612300, 712600, 4165000; 712600, 4164900; 677700, 4202200; 677600, 4201700; 4176700; 612300, 4177200; 613300, 712700, 4164800; 712600, 4164700; 676900, 4201400; returning to 676400, 4177200; 613600, 4176800; 614400, 712500, 4164800; 712400, 4164800; 4201300. 4175500; 614300, 4175300; 613700, 712400, 4164300; 712800, 4164500; (35) Subunit 19A: Contra Costa 4175000; 613600, 4175200; 613600, 713100, 4164300; 713200, 4164100; County, California. 4176100; 613300, 4176100; 613200, 712900, 4163800; 712900, 4163700; (i) From USGS 1:24,000 quadrangle 4175900; 613100, 4175900; 612800, 713100, 4163800; 713500, 4164000; maps Antioch South and Brentwood, 4176100; 612700, 4176100; 612500, 713600, 4164000; 713600, 4164100; California, land bounded by the 4175900; 612400, 4175900; 612400, 713700, 4164300; 714200, 4164300; following UTM 10 NAD 83 coordinates 4176300; 612000, 4176300; 611800, 714400, 4164500; 714500, 4164800; (E, N): 611400, 4193400; 610900, 4176500; 611600, 4176500; 611600, 714600, 4164800; 714800, 4164700; 4193500; 610200, 4193700; 609900, 4175300; 611400, 4175300; 611200, 714800, 4164200; 714400, 4164000; 4193900; 609700, 4194000; 609100, 4175400; 610900, 4175400; 610800, 714400, 4163600; 714500, 4163500;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00103 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59986 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

715200, 4164000; 715300, 4164200; 716300, 4155700; 716200, 4155000; Luis Ranch, Sandy Mush, Stevinson, 715400, 4164200; 715300, 4163900; returning to 715900, 4154900. and Turner Ranch, California, land 715100, 4163700; 715000, 4163500; (40) Unit 22: Mariposa and Merced bounded by the following UTM 10 NAD 714800, 4163300; 714900, 4163200; counties, California. 83 coordinates (E, N): 697300, 4104500; 715000, 4163200; 715700, 4163200; (i) From USGS 1:24,000 quadrangle 696100, 4104500; 695700, 4105000; 715900, 4163100; 716000, 4162900; maps Haystack Mtn., Indian Gulch, 695700, 4106600; 694700, 4107900; 716100, 4162800; 716200, 4162800; Merced, Merced Falls, Owens Reservoir, 693500, 4107900; 693700, 4109100; 716300, 4162900; 716400, 4163000; Planada, Snelling, Winton, and 692900, 4109100; 692900, 4109800; 716500, 4163100; 716600, 4163200; Yosemite Lake, California, land 693100, 4110200; 693800, 4110200; 716600, 4163500; 716500, 4163600; bounded by the following UTM 10 NAD 693800, 4111800; 692500, 4111800; 716500, 4163800; 716600, 4164100; 83 coordinates (E, N): 734700, 4133300; 692400, 4110600; 691800, 4110600; 716800, 4164500; 716700, 4164900; 734700, 4133700; 734100, 4133900; 691600, 4110200; 690800, 4110300; 716800, 4165300; 717200, 4165800; 733100, 4133900; 733100, 4134600; 690000, 4110300; 690000, 4111400; 717200, 4166100; 717000, 4166400; 732700, 4134600; 732600, 4135000; 689700, 4111800; 689200, 4111800; 716600, 4166400; 716400, 4166300; 732300, 4135500; 730300, 4135400; 689200, 4111300; 688400, 4111300; 716400, 4167000; 716600, 4167200; 729900, 4135700; 729900, 4136500; 688400, 4112100; 686700, 4112100; 726500, 4136500; 726400, 4136100; 716600, 4167300; 717000, 4167400; 686500, 4112900; 686500, 4113700; 725900, 4136100; 725900, 4135300; 717500, 4167400; 718100, 4167300; 686000, 4113700; 686000, 4116100; 725600, 4135100; 725500, 4135100; 718500, 4167100; 718600, 4166600; 684500, 4116100; 684400, 4114200; 725300, 4135500; 725100, 4135400; 718700, 4166400; 719100, 4166700; 682200, 4114200; 682100, 4113000; 725000, 4135400; 725000, 4135600; 681100, 4113000; 681100, 4111800; 719300, 4166800; 719800, 4166800; 724800, 4135700; 724600, 4135700; 719500, 4167400; 719500, 4167600; 724600, 4134700; 724200, 4134700; 680600, 4111700; 679600, 4110900; 719700, 4167800; 720500, 4167800; 724200, 4135500; 723400, 4135500; 678800, 4110900; 678200, 4111800; 720700, 4167700; 720900, 4167500; 723400, 4135600; 722800, 4135600; 678300, 4113600; 677900, 4114400; 721100, 4167400; 721300, 4167700; 722800, 4135000; 722600, 4135000; 679400, 4114400; 679400, 4115200; 721700, 4167700; 722000, 4167600; 722600, 4134700; 722500, 4134700; 680000, 4115200; 680300, 4116000; 722500, 4167600; 722900, 4167500; 722200, 4137900; 722800, 4137900; 681800, 4116100; 682800, 4116600; 723300, 4167400; 723000, 4168400; 722800, 4139300; 721900, 4139300; 683600, 4116500; 683600, 4117100; 723000, 4169200; 723300, 4169700; 721900, 4140200; 721000, 4140200; 681200, 4117100; 681000, 4124500; 723800, 4169800; 724100, 4169800; 721000, 4140900; 717800, 4140900; 680800, 4124900; 679800, 4124900; 724600, 4169200; 724700, 4168300; 717700, 4142400; 714500, 4142400; 679800, 4125700; 680700, 4125700; 725100, 4167900; 725300, 4167200; 714500, 4144900; 715500, 4144900; 680600, 4126400; 680300, 4126700; 726200, 4167100; 726500, 4166800; 715500, 4145700; 717000, 4145800; 680300, 4127200; 678900, 4127800; 726500, 4166600; 727300, 4166000; 718000, 4145400; 718200, 4145900; 679000, 4129000; 679300, 4129200; 727700, 4165800; 729000, 4165800; 718200, 4147600; 719700, 4148400; 680100, 4129400; 679700, 4130700; 730100, 4165400; 730400, 4165100; 720600, 4148600; 720600, 4149200; 679400, 4130200; 678600, 4130200; 730500, 4164900; 730700, 4164100; 719600, 4149200; 719600, 4149800; 678000, 4131200; 678500, 4132100; 731300, 4164100; 731700, 4163800; 720300, 4149800; 721300, 4150700; 678800, 4132400; 679000, 4131800; 731800, 4163400; 732200, 4162800; 721700, 4150700; 724400, 4153300; 679200, 4131800; 680200, 4132200; 732200, 4162500; 732700, 4162700; 725000, 4153500; 725500, 4154200; 680700, 4131700; 681600, 4132800; 733000, 4162600; 733600, 4162100; 725800, 4154800; 727200, 4155900; 681200, 4133100; 681200, 4133600; 733700, 4161500; 733600, 4161000; 727800, 4155900; 728500, 4155600; 681600, 4134100; 681700, 4134200; 734600, 4160400; 734800, 4160200; 730200, 4155600; 731600, 4155500; 681900, 4134200; 682300, 4134000; 734800, 4159500; 734400, 4158700; 732400, 4155400; 732600, 4155200; 682700, 4133800; 683400, 4133100; 734300, 4158100; 734500, 4157900; 733200, 4154700; 734100, 4154900; 683600, 4132600; 683600, 4132300; 734700, 4158000; 734900, 4158300; 734600, 4154800; 735600, 4156000; 683100, 4131800; 683100, 4131500; 735000, 4158800; 735500, 4158800; 735900, 4156000; 737100, 4155400; 683400, 4131500; 684300, 4130400; 735700, 4158600; 735600, 4158100; 737800, 4155000; 738200, 4154200; 684700, 4130000; 685500, 4130700; 736200, 4157500; 736800, 4157300; 738300, 4153300; 739000, 4152800; 686000, 4130700; 686200, 4130900; 736900, 4157100; 736900, 4156500; 739100, 4152200; 740200, 4151800; 686400, 4130900; 688800, 4131400; 736300, 4156500; 736000, 4156300; 740800, 4151500; 740800, 4150300; 690300, 4131400; 690500, 4130600; 735500, 4156300; 734100, 4156900; 741100, 4149900; 741700, 4149400; 691600, 4130600; 691600, 4130000; 733400, 4157100; 731700, 4156900; 742100, 4148500; 742100, 4147100; 692900, 4130000; 692800, 4131700; 730900, 4156500; 728900, 4156600; 743400, 4146100; 744000, 4145600; 692400, 4131800; 692400, 4133500; 727100, 4156700; 726900, 4156400; 744400, 4144600; 744300, 4143900; 693000, 4133000; 694400, 4133100; 725900, 4156400; 723900, 4155300; 743900, 4142700; 744000, 4142000; 694400, 4132000; 693700, 4132000; 723300, 4155400; 722500, 4155000; 744200, 4141700; 745500, 4140300; 693700, 4129800; 695200, 4129800; 722300, 4155000; 722300, 4157400; 745500, 4139500; 745400, 4139400; 695200, 4130300; 695700, 4130300; 723800, 4157500; 723700, 4159000; thence southwest to y-coordinate 695900, 4130000; 696100, 4129500; 722500, 4159000; 722200, 4159300; 4139300 on Bear Creek; thence 696100, 4129100; 696900, 4129100; 720900, 4159300; 720900, 4158500; southwest along Bear Creek to y- 696900, 4130200; 697200, 4130200; 719700, 4158500; 719700, 4158100; coordinate 4133300; thence west to the 698300, 4128600; 698600, 4128200; 719100, 4158000; 718700, 4157600; point of beginning at 734700, 4133300. 700100, 4127600; 700500, 4129200; 718000, 4157700; 717800, 4157400; (41) Unit 23: Merced County, 700500, 4130600; 701700, 4130600; 717900, 4157200; 718000, 4157000; California. 701800, 4129200; 703300, 4129200; 718400, 4157300; 718700, 4156700; (i) From USGS 1:24,000 quadrangle 703300, 4128800; 703900, 4128800; 718700, 4156300; 717400, 4156300; maps Arena, Atwater, El Nido, Gustine, 703900, 4129000; 704200, 4129000; 717000, 4155800; 716600, 4155800; Ingomar, Los Banos, Plainsburg, San 705600, 4128500; 705600, 4127800;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00104 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59987

705300, 4127000; 705400, 4126200; (i) From USGS 1:24,000 quadrangle 260200, 4087400; returning to 260100, 705900, 4125700; 706800, 4125400; maps Daulton, Gregg, Lanes Bridge, and 4086600. 707200, 4125400; 707900, 4126100; Little Table Mtn., California, land (44) Unit 25: Madera County, 708300, 4126100; 708300, 4125400; bounded by the following UTM 11 NAD California. 709100, 4125400; 709900, 4125700; 83 coordinates (E, N): 246600, 4092800; (i) From USGS 1:24,000 quadrangle 709900, 4126000; 710200, 4126200; 246300, 4092800; 246300, 4093000; maps Millerton Lake East and North 711500, 4126200; 711500, 4124600; 245500, 4093000; 242300, 4093100; Fork, California, land bounded by the 708000, 4124500; 706700, 4124500; 242300, 4095000; 242500, 4095100; following UTM 11 NAD 83 coordinates 706700, 4122100; 711500, 4122200; 244000, 4095000; 244000, 4096700; (E, N): 4108720; 271200, 4106800; 711500, 4121700; 712100, 4121400; 244800, 4096600; 244900, 4098200; 270200, 4106800; 269900, 4107000; 715600, 4121500; 715600, 4121100; 245700, 4098200; 245700, 4099800; 269900, 4107600; 270100, 4108600; 715300, 4121100; 714800, 4120600; 242500, 4100000; 242400, 4095200; 269300, 4108300; 269000, 4108700; 714800, 4119900; 716400, 4119900; 242300, 4095200; 237600, 4095200; 268500, 4108700; 268300, 4110000; 716400, 4119300; 715600, 4119300; 237600, 4096200; 237700, 4098500; 268800, 4110400; 268900, 4111000; 715600, 4118200; 718900, 4118300; 239600, 4098400; 239700, 4100000; 268300, 4111300; 268500, 4111500; 718900, 4118900; 718100, 4118900; 236100, 4100100; 236100, 4100400; 268600, 4112300; 268800, 4112400; 717700, 4119100; 717700, 4119900; 237500, 4101900; 238400, 4102700; 270600, 4112400; 270800, 4112100; 718100, 4119900; 718100, 4120800; 238800, 4103300; 239300, 4104100; 270700, 4111300; 269600, 4110800; 717000, 4120800; 717000, 4121600; 240900, 4106000; 242100, 4107300; 269700, 4110500; 270000, 4110200; 719300, 4121600; 719600, 4121700; 242100, 4106800; 242300, 4106800; 270600, 4109700; 270800, 4108800; 719600, 4123200; 718000, 4123200; 244300, 4105600; 245200, 4104700; 271300, 4108400; 271500, 4107800; 718000, 4124000; 722200, 4124000; 245800, 4103600; 246100, 4102700; 271600, 4107300; returning to 271200, 722200, 4123300; 721500, 4123300; 246500, 4101800; 246800, 4101300; 4106800. 721500, 4122500; 722900, 4122500; 247200, 4100900; 248300, 4100900; (45) Unit 26A: Kings and Tulare counties, California. 722900, 4121600; 722900, 4121200; 248900, 4101400; 250600, 4101400; (i) From USGS 1:24,000 quadrangle 721300, 4121200; 721300, 4120300; 250600, 4098900; 251100, 4098900; 251100, 4098000; 251700, 4098000; maps Burris Park, Monson, Remnoy, 722900, 4120300; 722900, 4118500; and Traver, California, land bounded by 726100, 4118600; 726100, 4120100; 251700, 4096600; 253200, 4096600; 253200, 4095200; 252800, 4095200; the following UTM 11 NAD 83 726900, 4120400; 728500, 4120400; coordinates (E, N): 274700, 4028100; 728500, 4121400; 730700, 4121800; 252500, 4095700; 252100, 4095600; 252100, 4094800; 250500, 4094800; 274700, 4029800; 275600, 4029800; 730900, 4122700; 731700, 4122700; 276100, 4030400; 276400, 4030600; 731700, 4123100; 732500, 4123100; 250400, 4093200; 250400, 4092900; 246600, 4092900; returning to 246600, 276800, 4031400; 277500, 4031500; 732600, 4121400; 735000, 4121100; 278200, 4031900; 279500, 4031800; 735300, 4120300; 733400, 4120300; 4092800. (43) Subunit 24B: Fresno County, 279000, 4032900; 280500, 4032900; 733400, 4118700; 731700, 4118700; 281400, 4033300; 281800, 4033200; 731700, 4117000; 730400, 4117000; California. (i) From USGS 1:24,000 quadrangle 283000, 4034300; 283800, 4034400; 730400, 4118600; 727700, 4118600; map Friant, California, land bounded by 284700, 4035200; 286800, 4035100; 727500, 4118400; 727500, 4116900; the following UTM 11 NAD 83 288500, 4035100; 288500, 4035600; 726800, 4116900; 726800, 4115300; coordinates (E, N): 260100, 4086600; 287700, 4035700; 287700, 4036700; 725900, 4115300; 725900, 4116900; 259200, 4086600; 259200, 4087700; 289300, 4036700; 289400, 4037400; 724300, 4116900; 724300, 4117600; 259600, 4087500; 260000, 4087500; 291100, 4037400; 291100, 4037200; 722600, 4117500; 722600, 4117600; 260100, 4087900; 259700, 4088100; 291800, 4037200; 291900, 4036800; 721800, 4117600; 721800, 4118400; 258500, 4088200; 258000, 4088300; 291900, 4035600; 292700, 4035800; 720200, 4118400; 720200, 4117600; 258000, 4089100; 258500, 4089300; 292700, 4036500; 293500, 4036400; 719400, 4117600; 719500, 4115900; 258500, 4089800; 258300, 4089800; 293500, 4036000; 294300, 4036000; 714600, 4115800; 714600, 4115000; 257700, 4089200; 256600, 4089200; 294300, 4035600; 293500, 4035600; 712200, 4115000; 711600, 4115500; 256600, 4090200; 256800, 4090800; 293400, 4034000; 292600, 4034000; 710600, 4116000; 709600, 4116500; 256900, 4092700; 257200, 4094300; 292600, 4035400; 291700, 4035400; 707300, 4116500; 707300, 4118100; 257300, 4095500; 258600, 4096700; 291700, 4035600; 290500, 4035700; 705000, 4118100; 704500, 4119600; 258900, 4096700; 259100, 4097500; 290500, 4036100; 289800, 4036100; 699400, 4119500; 699300, 4118700; 259500, 4097700; 260100, 4097700; 289800, 4035700; 289400, 4035700; 698800, 4118700; 698500, 4118500; 260500, 4097300; 260700, 4096900; 289400, 4034500; 288500, 4034500; 698200, 4117700; 697600, 4117700; 261800, 4096500; 262200, 4096600; 288500, 4034200; 287700, 4034200; 697800, 4116500; 693700, 4116200; 262400, 4097000; 263100, 4097200; 287700, 4034500; 287000, 4034600; 694200, 4115100; 694400, 4114600; 263300, 4097200; 263600, 4097200; 287000, 4034300; 285000, 4034400; 694800, 4114600; 695000, 4115100; 264900, 4096500; 264900, 4096200; 285000, 4033800; 283100, 4033800; 695800, 4115100; 696300, 4114300; 265400, 4096100; 265700, 4095800; 283100, 4033100; 282600, 4033100; 697600, 4114200; 697900, 4113900; 264300, 4095600; 264300, 4095300; 282600, 4032600; 282200, 4032600; 697900, 4113100; 698900, 4112500; 263300, 4094700; 262300, 4094200; 282100, 4031800; 282100, 4031100; 698800, 4109800; 695700, 4109800; 261800, 4093600; 260700, 4093400; 280100, 4031100; 280100, 4030800; 695700, 4109000; 697300, 4109000; 259900, 4092300; 259900, 4092100; 279000, 4030600; 278700, 4030500; 697300, 4108100; 696400, 4108100; 260200, 4092100; 261200, 4092400; 278500, 4030100; 278100, 4030000; 696400, 4107300; 696700, 4106600; 262200, 4091500; 262900, 4091800; 276400, 4030100; 275700, 4029600; 697600, 4106600; 698200, 4105800; 263400, 4091300; 263400, 4089900; 275500, 4029200; 275300, 4028600; 698200, 4105300; returning to 697300, 263200, 4089800; 263100, 4089400; 275000, 4028300; returning to 274700, 4104500. 261700, 4088800; 261700, 4089400; 4028100. (42) Subunit 24a: Madera County, 261300, 4089400; 261300, 4088200; (46) Subunit 26B: Tulare County, California. 261100, 4088200; 261100, 4087400; California.

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00105 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59988 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

(i) From USGS 1:24,000 quadrangle 3974600; 288000, 3975100; 288000, 4035200; 678000, 4036000; 677600, map Monson, California, land bounded 3975800; 288000, 3976000; 285800, 4037100; 677200, 4037800; 676800, by the following UTM 11 NAD 83 3976000; 285400, 3976100; 285100, 4037900; 676100, 4038500; 675800, coordinates (E, N): 297500, 4035500; 3976300; 285000, 3976800; 284900, 4039000; 675000, 4038500; 675100, 296700, 4035500; 296700, 4036300; 3977300; 284600, 3977500; 284600, 4038000; 674700, 4037600; 673100, 297500, 4036300; returning to 297500, 3977700; 283200, 3977700; 282900, 4037000; 673800, 4036500; 674000, 4035500. 3977400; 284000, 3976400; 284000, 4035500; 674700, 4035000; 675500, (47) Subunit 26C: Tulare County, 3976100; 282000, 3976100; 281000, 4034700; 676000, 4033600; 676800, California. 3977900; 282200, 3977900; 282600, 4033300; 677600, 4032700; 678100, (i) From USGS 1:24,000 quadrangle 3977600; 282800, 3977700; 282800, 4032100; 679000, 4031400; 679600, map Ivanhoe, California, land bounded 3977900; 283100, 3978100; 283100, 4031200; 679900, 4031700; 679900, by the following UTM 11 NAD 83 3979500; 286400, 3979500; 286400, 4032700; 680500, 4033000; 681000, coordinates (E, N): 299200, 4038200; 3980300; 287500, 3980300; 287500, 4032500; 681500, 4031500; 682600, 298400, 4038200; 298400, 4039000; 3979500; 287800, 3979400; 287700, 4031200; 684400, 4028700; 685200, 298400, 4039500; 298500, 4039800; 3977800; 289000, 3977800; 288900, 4028700; 685500, 4028200; 687400, 298900, 4039900; 298900, 4041500; 3976200; 290500, 3976100; 290600, 4029500; 688000, 4030700; 688800, 300900, 4041500; 300900, 4040100; 3975300; 291500, 3975300; 291400, 4031100; 689700, 4031200; 691200, 300300, 4040100; 300300, 4039400; 3973700; 292200, 3973700; 292200, 4032600; 692000, 4032300; 692500, 299200, 4039400; returning to 299200, 3973200; 292500, 3972900; 292900, 4031600; 693200, 4031300; 693700, 4038200. 3972900; 292900, 3971900; 292100, 4031300; 694300, 4030900; 693800, (48) Subunit 27A: Tulare County, 3971900; returning to 292100, 3971100. 4029500; 692600, 4028500; 693500, California. (50) Unit 28: Monterey and San 4028500; 694300, 4027800; 694300, (i) From USGS 1:24,000 quadrangle Benito counties, California. 4027200; 695100, 4026100; 696600, maps Alpaugh, Corcoran, and Taylor (i) From USGS 1:24,000 quadrangle 4024900; 696600, 4023700; 697200, Weir, California, land bounded by the maps Hepsedam Peak, Hernandez 4022600; 697900, 4022600; 698300, following UTM 11 NAD 83 coordinates Reservoir, Llanada, Lonoak, Monarch 4021500; 699200, 4020500; 699100, (E, N): 279200, 3986500; 278900, Peak, Nattrass Valley, Pinalito Canyon, 4019400; 698500, 4019300; 698000, 3986500; 278900, 3986700; 278600, Rock Spring Peak, San Benito, and Topo 4018700; 697100, 4018800; 695700, 3987200; 278500, 3987400; 278300, Valley, California, land bounded by the 4017900; 695400, 4016900; 695100, 3987500; 277100, 3987600; 276900, following UTM 10 NAD 83 coordinates 4016500; 694900, 4015900; 694900, 3988500; 276900, 3989000; 276500, (E, N): 691600, 4008600; 690800, 4015000; 694400, 4013700; 693800, 3989000; 276000, 3989900; 275900, 4008600; 689500, 4009400; 689000, 4013100; 693600, 4012100; 692400, 3990800; 276100, 3991000; 276100, 4010100; 688900, 4010700; 687800, 4010900; 692000, 4009100; returning to 3991500; 276400, 3991500; 276400, 4011000; 687100, 4011000; 685400, 691600, 4008600. 3992300; 276300, 3992400; 276000, 4012100; 684900, 4013300; 683600, (51) Subunit 29A: Monterey County, 3992300; 274300, 3992300; 274100, 4014100; 683400, 4014900; 682700, California. 3992500; 274100, 3994000; 274200, 4015200; 682500, 4016200; 683100, (i) From USGS 1:24,000 quadrangle 3994300; 274700, 3994400; 274700, 4016600; 683100, 4017700; 684200, maps Cosio Knob, Jolon, and Williams 3994700; 274900, 3995100; 275100, 4019500; 684200, 4020500; 683400, Hill, California, land bounded by the 3995200; 274500, 3995900; 274300, 4022200; 681700, 4023500; 681100, following UTM 10 NAD 83 coordinates 3996200; 273500, 3997200; 273500, 4023600; 680700, 4024400; 680600, (E, N): 673700, 3973300; 672700, 3997500; 276500, 3997500; 276700, 4025500; 679800, 4025700; 679300, 3974100; 672100, 3973300; 669400, 3997200; 278100, 3997200; 278300, 4026900; 678700, 4027300; 678100, 3974400; 668300, 3975600; 667100, 3997100; 278300, 3995800; 279700, 4026600; 677400, 4026400; 676000, 3976800; 665700, 3977800; 665100, 3995800; 279900, 3995600; 279900, 4025600; 676000, 4025000; 676600, 3978300; 664800, 3978900; 663900, 3993900; 279700, 3993800; 278300, 4024500; 676800, 4023700; 675800, 3979200; 663500, 3980000; 662800, 3993800; 278300, 3992600; 278800, 4022500; 675600, 4021200; 675000, 3980300; 661700, 3981000; 661000, 3992600; 279000, 3992400; 279000, 4020200; 674200, 4019900; 672200, 3982100; 660200, 3982200; 658900, 3991800; 279600, 3991800; 279800, 4016700; 670800, 4015700; 670000, 3982800; 658800, 3983700; 659100, 3991700; 279800, 3990800; 279600, 4015700; 669500, 4016000; 669100, 3983900; 659100, 3984100; 659400, 3990800; 279600, 3990000; 279800, 4016700; 669600, 4017400; 669500, 3984100; 660000, 3984600; 660200, 3990000; 279800, 3989100; 279600, 4018600; 670100, 4019300; 670300, 3986200; 660300, 3986400; 659800, 3988900; 279000, 3988900; 279000, 4022200; 671000, 4023000; 672700, 3986600; 659900, 3986800; 660200, 3987700; 279200, 3987600; returning to 4024100; 673500, 4024300; 674800, 3986800; 660500, 3987200; 660700, 279200, 3986500. 4026200; 674500, 4026500; 674600, 3987200; 660800, 3987500; 660500, (49) Subunit 27B: Tulare County, 4027000; 674100, 4027300; 673000, 3987900; 660300, 3988400; 660500, California. 4026800; 672400, 4027000; 671600, 3988500; 661700, 3987600; 662400, (i) From USGS 1:24,000 quadrangle 4028700; 670700, 4028700; 669700, 3986500; 663400, 3984300; 663500, maps Alpaugh, Delano West, and 4028900; 669700, 4030100; 669800, 3983700; 664700, 3982000; 665100, Pixley, California, land bounded by the 4030700; 670300, 4032100; 670700, 3982100; 665300, 3982400; 665500, following UTM 11 NAD 83 coordinates 4035100; 671300, 4037100; 669100, 3982500; 666700, 3982200; 668000, (E, N): 292100, 3971100; 289500, 4037700; 669200, 4038600; 668700, 3982100; 668500, 3981900; 668700, 3971100; 289500, 3972500; 290300, 4040300; 669800, 4042700; 671900, 3981600; 668500, 3981100; 668700, 3972500; 290300, 3974400; 288200, 4043300; 674100, 4043500; 676000, 3980600; 669400, 3980100; 669800, 3974400; 288000, 3973600; 287200, 4045600; 677300, 4046700; 683000, 3980500; 670600, 3980700; 671400, 3973600; 287200, 3973000; 285800, 4043300; 683800, 4042200; 683700, 3980600; 671400, 3979500; 671900, 3973000; 285800, 3973500; 285200, 4040600; 682300, 4039700; 681300, 3979500; 672700, 3978600; 674700, 3973500; 285200, 3972800; 283800, 4038600; 681600, 4037000; 681700, 3978600; 675400, 3978200; 674600, 3972800; 282800, 3974600; 287500, 4035800; 680800, 4034500; 678800, 3976900; 674800, 3975700; 675100,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00106 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59989

3975300; 675100, 3974800; 674600, 3947900; 712600, 3947900; 712500, 3905200; 239100, 3904900; 242800, 3974300; 674400, 3973400; returning to 3948000; 712500, 3948800; 711600, 3902600; 244400, 3901300; 244400, 673700, 3973300. 3949100; 711300, 3949300; 711200, 3901000; 244700, 3900700; 244800, (52) Subunit 29B: Monterey and San 3949800; 710600, 3949900; 710500, 3899100; 245400, 3898800; 247200, Luis Obispo counties, California. 3950000; 710500, 3950200; 710900, 3896600; 248200, 3895000; returning to (i) From USGS 1:24,000 quadrangle 3950400; 710900, 3950600; 710600, 247900, 3894600. maps Adelaida, Bradley, Paso Robles, 3950700; 709400, 3950500; 709300, (55) Unit 31: Santa Barbara County, San Miguel, Valleton, and Wunpost, 3952100; 709800, 3952800; 709800, California. California, land bounded by the 3954800; 709500, 3955200; 709500, (i) From USGS 1:24,000 quadrangle following UTM 10 NAD 83 coordinates 3955600; 710200, 3955600; 710400, maps Figueroa Mtn., Lake Cachuma, Los (E, N): 701800, 3951600; 700200, 3955500; 711000, 3955300; 711500, Olivos, and Santa Ynez, California, land 3951900; 699700, 3953000; 700000, 3954600; 711600, 3953600; 713900, bounded by the following UTM 10 NAD 3953600; 698600, 3955300; 697900, 3953600; 714200, 3954000; 714500, 83 coordinates (E, N): 775000, 3831900; 3957000; 698100, 3957800; 697200, 3953800; 715000, 3953700; 715300, 774200, 3831800; 773600, 3831900; 3958800; 696600, 3958600; 696300, 3953500; 715500, 3953400; 715700, 772500, 3831800; 772100, 3831400; 3958500; 695700, 3958500; 694500, 3953400; 716000, 3953700; 716500, 771400, 3831500; 770400, 3831000; 3960600; 694200, 3961400; 694800, 3953700; 716800, 3953600; 717600, 769800, 3830900; 769300, 3831100; 3961800; 694900, 3962400; 694700, 3953700; 717900, 3954200; 718500, 769100, 3831300; 768500, 3832600; 3962800; 694800, 3963500; 695400, 3954600; 718900, 3954800; 719300, 768500, 3833300; 768700, 3833700; 3963500; 695800, 3963400; 696700, 3954900; 720400, 3955600; 721400, 769900, 3834700; 770200, 3834700; 3963400; 697800, 3964200; 699000, 3956700; 722200, 3958400; 722500, 771900, 3835200; 772300, 3835300; 3964200; 700100, 3965600; 700500, 3960400; 723300, 3962100; 724200, 772800, 3835000; 773100, 3835000; 3966800; 701400, 3968400; 698800, 3962500; 724400, 3963300; 725100, 773100, 3835300; 773700, 3835300; 3970000; 698800, 3970400; 699200, 3964000; 725100, 3963300; 725000, 773700, 3835700; 773600, 3836100; 3970700; 699800, 3972200; 700200, 3962100; 725600, 3961700; 726100, 773200, 3836900; 773800, 3837100; 3972800; 700400, 3973600; 700800, 3961700; 726100, 3961300; 725200, 774300, 3836500; 774900, 3836300; 3974300; 701300, 3974700; 701700, 3960400; 725100, 3959200; 724700, thence southeast to UTM zone 11, land 3975500; 702900, 3976300; 703200, 3958300; 724300, 3956700; 724700, bounded by the following UTM 11 NAD 3976900; 704200, 3977800; 704800, 3956500; 725200, 3955000; 724100, 83 coordinates (E, N): 225100, 3836200; 3977900; 705400, 3977900; 706100, 3953600; 723800, 3952700; 723400, 225300, 3836400; 225600, 3837000; 3978300; 706700, 3978700; 706700, 3952000; 723100, 3950600; 723500, 226600, 3838500; 228200, 3839300; 3978300; 706200, 3976700; 706100, 3949700; 723500, 3949000; 724100, 229800, 3839000; 232200, 3840500; 3975500; 706300, 3975100; 706500, 3948500; 723500, 3948400; 722300, 232400, 3841700; 232300, 3842700; 3974400; 706400, 3971900; 706600, 3948900; 719200, 3948900; 719200, 231600, 3843100; 230300, 3844900; 3970800; 707000, 3970100; 707000, 3949700; 718300, 3949700; 718300, 230000, 3846200; 230800, 3846400; 3969400; 706800, 3969200; 706800, 3948900; 718900, 3948900; 719000, 231200, 3846200; 231700, 3846200; 3968200; 706600, 3967400; 705500, 3948700; 719200, 3948700; 719200, 232000, 3846500; 232800, 3847000; 3965500; 705400, 3964700; 705800, 3948100; 720000, 3948100; 720000, 233800, 3847000; 234500, 3846400; 3963600; 705700, 3963000; 706000, 3946500; 720200, 3946400; 720800, 234700, 3845600; 235200, 3845600; 3962800; 706800, 3963500; 707600, 3945700; 721000, 3945200; 721100, 235900, 3844500; 236400, 3844200; 3963500; 707500, 3962800; 707900, 3944900; 721100, 3943400; 720100, 236400, 3843800; 235900, 3843600; 3962500; 708100, 3962000; 707500, 3943400; 718700, 3942200; returning to 235700, 3843300; 235500, 3843000; 3961300; 706500, 3961200; 706000, 717700, 3941700. 235200, 3842900; 235100, 3842800; 3961000; 705600, 3959800; 705900, (54) Unit 30: San Luis Obispo County, 235100, 3842000; 235300, 3841300; 3959400; 706000, 3958800; 706600, California. 235200, 3840700; 234700, 3840000; 3958600; 706900, 3958000; 706900, (i) From USGS 1:24,000 quadrangle 234900, 3839700; 234600, 3839500; 3957600; 706400, 3957200; 705100, maps Chimineas Ranch, McKittrick 234600, 3839300; 234300, 3839300; 3957000; 704900, 3956700; 705400, Summit, Painted Rock, and Simmler, 233800, 3839300; 233100, 3838200; 3956700; 705800, 3956500; 706300, California, land bounded by the 232900, 3838000; 232300, 3837900; 3956000; 707900, 3956100; 707900, following UTM 11 NAD 83 coordinates 232100, 3838200; 231800, 3838400; 3955400; 708100, 3955100; 707600, (E, N): 247900, 3894600; 245800, 231400, 3838500; 230700, 3837700; 3954000; 707300, 3953600; 705700, 3895500; 243500, 3896000; 242700, 230800, 3837200; 230300, 3836600; 3952600; 705000, 3952800; returning to 3896400; 242200, 3897600; 240100, 230100, 3836100; 230000, 3835700; 701800, 3951600. 3898900; 239500, 3899300; 239300, 229100, 3835300; 228900, 3834900; (53) Subunit 29C: San Luis Obispo 3899600; 238300, 3900400; 237900, 228800, 3833800; 228000, 3833300; County, California. 3900300; 236100, 3901000; 235800, 227400, 3833200; 227000, 3832800; (i) From USGS 1:24,000 quadrangle 3901300; 235800, 3902300; 235500, 226700, 3832400; 226100, 3832400; maps Cholame Hills, Creston, Estrella, 3903500; 234800, 3904400; 233000, 225800, 3832500; 225200, 3832000; Paso Robles, and Ranchito Canyon , 3904900; 231800, 3905800; 231600, 225000, 3831900; 225000, 3831900; California, land bounded by the 3907000; 231900, 3908800; 231800, 224800, 3831900; thence west to UTM following UTM 10 NAD 83 coordinates 3909400; 229400, 3910200; 227200, zone 10 to the point of beginning at (E, N): 717700, 3941700; 717400, 3911200; 227300, 3913400; 228100, UTM 10 NAD 83 coordinates 775000, 3941700; 717000, 3941900; 717200, 3913800; 229000, 3913900; 231900, 3831900. 3942500; 715100, 3944900; 715300, 3913200; 233300, 3913200; 234300, (56) Unit 32: Ventura County, 3945200; 714500, 3945900; 714800, 3912900; 235100, 3912100; 235300, California. 3946200; 714600, 3946400; 714000, 3911200; 233900, 3910100; 233700, (i) From USGS 1:24,000 quadrangle 3946400; 713200, 3947000; 713200, 3909700; 235300, 3909000; 235700, maps Alamo Mountain, Lion Canyon, 3947200; 713600, 3947800; 713500, 3908500; 237200, 3907500; 237700, Lockwood Valley, San Guillermo, and 3948400; 713200, 3948700; 712800, 3906300; 238200, 3905800; 239100, Topatopa Mountains, California, land

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00107 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59990 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

bounded by the following UTM 11 NAD 485200, 3740100; 484600, 3740100; 480500, 3734000; 480500, 3734050; 83 coordinates (E, N): 310100, 3830500; 484600, 3740000; 484550, 3740000; 480300, 3734050; 480300, 3734100; 309400, 3831000; 308400, 3830900; 484550, 3739900; 484500, 3739900; 480150, 3734100; 480150, 3734150; 307200, 3830600; 306000, 3831200; 484500, 3739750; 484450, 3739750; 480050, 3734150; 480050, 3734200; 304700, 3831300; 303400, 3832100; 484450, 3739700; 484400, 3739700; 479700, 3734200; 479700, 3734150; 302100, 3832600; 301600, 3833600; 484400, 3739650; 484350, 3739650; 479400, 3734150; 479400, 3734200; 300400, 3833600; 299200, 3834000; 484350, 3739600; 484250, 3739600; 479250, 3734200; 479250, 3734150; 298200, 3834400; 297700, 3835300; 484250, 3739550; 484000, 3739299; 479050, 3734150; 479050, 3734100; 297900, 3837300; 299500, 3837500; 483950, 3739300; 483950, 3738800; 478850, 3734100; 478850, 3734050; 301200, 3838400; 301500, 3839300; 483900, 3738800; 483900, 3738750; 478750, 3734050; 478750, 3734000; 303400, 3841000; 303800, 3842700; 483850, 3738750; 483850, 3738550; 478600, 3734000; 478600, 3733950; 304900, 3843600; 305800, 3843600; 483900, 3738550; 483900, 3738500; 478450, 3733950; 478450, 3733900; 307700, 3843400; 309500, 3843400; 483950, 3738500; 483950, 3738450; 478250, 3733900; 478250, 3733850; 310500, 3844200; 311900, 3844600; 484000, 3738450; 484000, 3738350; 478100, 3733850; 478100, 3733800; 313400, 3845400; 314500, 3844100; 484050, 3738350; 484050, 3738300; 478000, 3733800; 478000, 3733750; 315200, 3843800; 315700, 3842400; 484100, 3738300; 484100, 3738100; 477900, 3733750; 477900, 3733700; 316500, 3841100; 317200, 3838100; 484050, 3738100; 484050, 3738000; 477850, 3733700; 477850, 3733602; 317200, 3837000; 316500, 3833900; 484000, 3738000; 484000, 3737950; 477550, 3733100; 477550, 3733000; 315700, 3833300; 315200, 3834100; 483900, 3737950; 483900, 3737900; 477450, 3733000; 477450, 3732950; 314000, 3834100; 313100, 3832200; 483800, 3737900; 483800, 3737850; 477100, 3732950; 477100, 3733000; 311500, 3830800; returning to 310100, 483750, 3737850; 483750, 3737800; 476800, 3733000; 476800, 3732950; 3830500. 483700, 3737800; 483700, 3737750; 476700, 3732950; 476700, 3732900; (57) Subunit 33A: Riverside County, 483600, 3737750; 483600, 3737650; 476600, 3732900; 476600, 3732850; California. (i) From USGS 1:24,000 quadrangle 483550, 3737650; 483550, 3737500; 476550, 3732850; 476550, 3732800; maps Perris, Romoland, and Lake 483500, 3737500; 483500, 3737350; 476500, 3732800; 476500, 3732750; Elsinore, California, land bounded by 483450, 3737350; 483450, 3737300; 476400, 3732750; 476400, 3732900; the following UTM11 NAD83 483400, 3737300; 483400, 3737250; 476500, 3732900; 476500, 3732950; coordinates (E,N): 486950, 3744600; 483300, 3737250; 483300, 3737200; 476550, 3732950; 476550, 3733000; 487050, 3744600; 487050, 3744100; 483250, 3737200; 483250, 3737150; 476650, 3733000; 476650, 3733050; 487150, 3744098; 487400, 3744450; 483200, 3737150; 483200, 3737050; 476700, 3733050; 476700, 3733100; 487400, 3744500; 487500, 3744500; 483150, 3737050; 483150, 3737000; 476800, 3733100; 476800, 3733150; 487500, 3744400; 487550, 3744400; 483100, 3737000; 483100, 3736950; 477100, 3733150; 477100, 3733100; 487700, 3744250; 487700, 3744050; 483050, 3736950; 483050, 3736900; 477450, 3733100; 477450, 3733199; 487650, 3744050; 487650, 3744000; 483000, 3736900; 483000, 3736850; 477650, 3733600; 477650, 3733694; 487600, 3744000; 487600, 3743950; 482550, 3736850; 482550, 3736750; 478000, 3734050; 478100, 3734050; 487500, 3743950; 487500, 3743900; 482600, 3736750; 482600, 3736600; 478100, 3734100; 478200, 3734100; 487450, 3743900; 487450, 3743800; 482100, 3736600; 482100, 3736550; 478200, 3734150; 478300, 3734150; 487350, 3743800; 487350, 3743750; 482050, 3736550; 482050, 3736600; 478300, 3734200; 478500, 3734200; 487300, 3743750; 487300, 3743550; 482000, 3736600; 482000, 3736550; 478500, 3734250; 478650, 3734250; 487100, 3743550; 487200, 3743391; 481950, 3736550; 481950, 3736500; 478650, 3734300; 478750, 3734300; 487300, 3743400; 487300, 3743350; 481900, 3736500; 481900, 3736450; 478750, 3734350; 478850, 3734450; 487350, 3743350; 487350, 3743150; 481850, 3736450; 481850, 3736400; 478900, 3734450; 478900, 3734550; 487300, 3743150; 487100, 3742943; 481800, 3736400; 481800, 3736300; 478950, 3734550; 478950, 3734650; 487100, 3742900; 487000, 3742900; 481750, 3736300; 481750, 3736250; 479000, 3734650; 479000, 3734750; 487000, 3742850; 486900, 3742850; 481800, 3736250; 481800, 3736100; 479050, 3734750; 479050, 3734900; 486900, 3742800; 486850, 3742800; 481750, 3736100; 481750, 3735950; 479100, 3734900; 479100, 3735100; 486850, 3742700; 486750, 3742599; 481700, 3735950; 481700, 3735850; 479150, 3735100; 479150, 3735200; 486650, 3742600; 486650, 3742550; 481650, 3735850; 481650, 3735700; 479200, 3735200; 479200, 3735250; 486600, 3742550; 486600, 3742500; 481700, 3735700; 481700, 3735650; 479250, 3735250; 479250, 3735350; 486500, 3742500; 486500, 3742400; 481800, 3735650; 481800, 3735600; 479300, 3735350; 479300, 3735450; 486450, 3742400; 486450, 3742350; 481850, 3735600; 481850, 3735550; 479350, 3735450; 479350, 3735600; 486400, 3742350; 486400, 3742200; 481900, 3735550; 481900, 3735500; 479400, 3735600; 479400, 3735650; 486350, 3742200; 486350, 3742100; 482000, 3735500; 482000, 3735450; 479450, 3735650; 479450, 3735700; 486300, 3742100; 486300, 3742000; 482050, 3735450; 482050, 3735250; 479500, 3735700; 479500, 3735750; 486250, 3742000; 486250, 3741950; 482000, 3735250; 482000, 3735200; 479550, 3735750; 479550, 3735850; 486200, 3741950; 486200, 3741900; 481750, 3735200; 481750, 3735250; 479600, 3735850; 479600, 3735900; 486250, 3741900; 486250, 3741750; 481600, 3735250; 481600, 3735300; 479700, 3735900; 479700, 3735950; 486102, 3741592; 486050, 3741600; 481450, 3735300; 481450, 3735350; 479750, 3735950; 479750, 3736000; 486050, 3741400; 486000, 3741400; 481400, 3735350; 481400, 3735150; 479800, 3736000; 479800, 3736050; 486000, 3741250; 485950, 3741250; 481450, 3735150; 481450, 3735050; 479850, 3736050; 479850, 3736100; 485950, 3741150; 485900, 3741150; 481400, 3735050; 481400, 3735000; 479900, 3736100; 479900, 3736150; 485900, 3741100; 485850, 3741100; 481300, 3735000; 481300, 3734950; 479950, 3736150; 479950, 3736250; 485850, 3741000; 485800, 3741000; 481100, 3734950; 481100, 3734900; 480000, 3736250; 480000, 3736450; 485800, 3740900; 485750, 3740900; 481050, 3734900; 481050, 3734850; 479950, 3736450; 479950, 3736500; 485750, 3740550; 485700, 3740550; 481000, 3734850; 480850, 3734250; 479900, 3736500; 479900, 3736550; 485700, 3740250; 485650, 3740250; 480800, 3734250; 480800, 3734150; 479850, 3736550; 479850, 3736650; 485650, 3740200; 485250, 3740200; 480750, 3734150; 480750, 3734050; 479800, 3736650; 479800, 3736700; 485250, 3740150; 485200, 3740150; 480700, 3734050; 480700, 3734000; 479750, 3736700; 479750, 3736850;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00108 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59991

479800, 3736850; 479800, 3736900; California, land bounded by the 3708750; 478250, 3709000; 477500, 479850, 3736900; 479850, 3736950; following UTM 11 NAD 83 coordinates 3709000; 477500, 3709250; 476750, 480150, 3736950; 480150, 3737000; (E, N): 496100, 3734600; 497000, 3709250; 476750, 3709000; 476500, 480250, 3737000; 480250, 3737050; 3734600; 497000, 3732800; 497200, 3709000; 476500, 3708500; 475750, 480300, 3737050; 480300, 3737100; 3732800; 497200, 3732900; 498000, 3708500; 475750, 3708000; 475000, 480350, 3737100; 480350, 3737150; 3732900; 498000, 3732800; 497900, 3708000; 475000, 3707000; 474000, 480400, 3737150; 480400, 3737650; 3732800; 497900, 3732630; 497230, 3707000; 474000, 3706750; 472000, 480450, 3737650; 480450, 3737700; 3732290; 497250, 3732250; 497300, 3706750; 472000, 3708250; 472500, 480500, 3737700; 480500, 3737750; 3732280; 497340, 3732220; 497760, 3708250; 472500, 3708500; 472750, 480550, 3737750; 480550, 3737850; 3732430; 497800, 3732400; 497800, 3708500; 472750, 3709250; 473000, 480600, 3737850; 480600, 3738000; 3732100; 497000, 3732100; 497000, 3709250; 473000, 3710500; 473250, 480550, 3738000; 480550, 3738150; 3731700; 495500, 3731000; 495300, 3710500; 473250, 3710750; 474000, 480600, 3738150; 480600, 3738250; 3731000; 495300, 3731300; 494500, 3710750; 474000, 3710500; 474250, 480750, 3738250; 480750, 3738200; 3731300; 494500, 3731500; 494600, 3710500; 474250, 3710250; 474500, 480850, 3738200; 480850, 3738250; 3731500; 494600, 3731600; 494700, 3710250; 474500, 3710000; 474750, 480800, 3738250; 480800, 3738400; 3731600; 494700, 3732000; 494800, 3710000; 474750, 3709750; 475000, 480750, 3738400; 480750, 3738550; 3732000; 494800, 3732100; 495550, 3709750; 475000, 3710000; 475500, 480700, 3738550; 480700, 3738700; 3732100; 495550, 3733300; 495600, 3710000; 475500, 3710250; 475750, 480750, 3738700; 480750, 3738750; 3733300; 495600, 3733600; 496100, 3710250; 475750, 3711250; 476250, 480800, 3738750; 480800, 3738800; 3733600; returning to 496100, 3734600; 3711250; returning to 476250, 3711500; 480850, 3738800; 480850, 3738950; excluding land bounded by 495900, excluding land bounded by 475000, 480800, 3738950; 480800, 3739000; 3733500; 495900, 3733300; 496000, 3709500; 475000, 3709000; 475250, 480850, 3739000; 480850, 3739050; 3733300; 496000, 3733500; 495900, 3709000; 475250, 3709250; 475500, 481000, 3739050; 481000, 3739100; 3733500; and land bounded by 495800, 3709250; 475500, 3709500; 475000, 481150, 3739100; 481150, 3739000; 3732100; 495700, 3731700; 496000, 3709500; and land bounded by 473500, 481200, 3739000; 481200, 3738900; 3731700; 496000, 3732100; 495800, 3709000; 473500, 3708750; 474250, 481250, 3738900; 481250, 3738850; 3732100. 3708750; 474250, 3709000; 473500, 481300, 3738850; 481300, 3738750; (59) Subunit 33C: Riverside County, 3709000. 481350, 3738750; 481350, 3738650; California. 481400, 3738650; 481400, 3738550; (i) From USGS 1:24,000 quadrangle (61) Unit 35: Riverside County, 481500, 3738550; 481500, 3738650; map Lakeview, California, land California. 481550, 3738650; 481550, 3738700; bounded by the following UTM 11 NAD (i) From USGS 1:24,000 quadrangle 481650, 3738700; 481650, 3738750; 83 coordinates (E, N): 496900, 3736800; map Bachelor Mtn., California, land 482150, 3738750; 482150, 3738800; 497200, 3736800; 497200, 3736500; bounded by the following UTM 11 NAD 482200, 3738800; 482200, 3739050; 496900, 3736500; returning to 496900, 83 coordinates (E, N): 490800, 3712500; 482150, 3739050; 482150, 3739250; 3736800. 490400, 3712500; 490400, 3712600; 482200, 3739250; 482200, 3739300; (60) Unit 34: Riverside County, 490200, 3712600; 490200, 3712700; 482250, 3739300; 482250, 3739350; California. 490100, 3712700; 490100, 3712800; 482400, 3739350; 482400, 3739400; (i) From USGS 1:24,000 quadrangle 490000, 3712800; 490000, 3712900; 482750, 3739400; 482750, 3739350; maps Murrieta and Wildomar, 489800, 3712900; 489800, 3713000; 482800, 3739350; 482800, 3739400; California, land bounded by the 489700, 3713000; 489700, 3713300; 482900, 3739400; 482900, 3739450; following UTM11 NAD27 coordinates 489800, 3713300; 489800, 3713600; 483250, 3739450; 483250, 3739500; (E, N): 476250, 3711500; 477000, 490200, 3713600; 490200, 3713500; 483400, 3739500; 483400, 3739550; 3711500; 477000, 3711250; 477250, 490600, 3713500; 490600, 3713400; 483500, 3739550; 483500, 3739600; 3711250; 477250, 3710750; 478000, 491000, 3713400; 491000, 3713300; 484100, 3740050; 484100, 3740100; 3710750; 478000, 3710500; 478250, 490900, 3713300; 490900, 3713200; 484400, 3740100; 484400, 3740150; 3710500; 478250, 3710250; 478500, 490800, 3713200; 490800, 3713000; 486800, 3743700; 486850, 3743700; 3710250; 478500, 3710000; 478750, 490900, 3713000; 490900, 3712700; 486850, 3743800; 486800, 3743800; 3710000; 478750, 3709750; 479250, 490800, 3712700; returning to 490800, 486800, 3744000; 487000, 3744000; 3709750; 479250, 3709500; 479500, 3712500. 487000, 3744100; 486950, 3744100; 3709500; 479500, 3709250; 479250, (62) Maps follow of critical habitat returning to 486950, 3744600. 3709250; 479250, 3709000; 479500, units1 through 10, 11 through 25, and (58) Subunit 33B: Riverside County, 3709000; 479500, 3708500; 479250, 26 through 35 (respectively) for vernal California. 3708500; 479250, 3708250; 479000, (i) From USGS 1:24,000 quadrangle 3708250; 479000, 3708500; 478750, pool fairy shrimp (Branchinecta lynchi). maps Lakeview and Winchester, 3708500; 478750, 3708750; 478250, BILLING CODE4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00109 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59992 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00110 Fmt 4701 Sfmt 4725 E:\FR\FM\24SEP2.SGM 24SEP2 EP24se02.002 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59993

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00111 Fmt 4701 Sfmt 4725 E:\FR\FM\24SEP2.SGM 24SEP2 EP24se02.003 59994 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C (1) Critical habitat units are depicted Madera, Fresno, Tulare and Kings Vernal Pool Tadpole Shrimp (Lepidurus for Shasta, Butte, Tehama, Glenn, counties, California on the map below. packardi) Colusa, Sacramento, Solano, Alameda, (2) The primary constituent elements Amador, Stanislaus, Merced, Mariposa, of critical habitat for Lepidurus packardi

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00112 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24se02.004 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59995

are the habitat components that 4482400; 564400, 4482100; 564500, 4455600; 571400, 4455400; 571100, provide— 4481700; 564500, 4481000; returning to 4454900; 570600, 4454900; returning to (i) Vernal pools, swales, and other 564200, 4480800. 570200, 4454800. ephemeral wetlands and depressions of (5) Unit 2: Shasta and Tehama (6) Unit 3: Butte and Tehama appropriate sizes and depths that counties, California. Counties, California. typically become inundated during (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle winter rains and hold water for maps Balls Ferry, Bend, Dales, Red Bluff maps Acorn Hollow, Campbell Mound, sufficient lengths of time necessary for East, Shingletown, and Tuscan Buttes Foster Island, Nord, Richardson Springs, vernal pool tadpole shrimp incubation, NE, California, land bounded by the Richardson Springs NW, and Vina, reproduction, dispersal, feeding, and following UTM 10 NAD 83 coordinates California, land bounded by the sheltering, but which are dry during the (E, N): 570200, 4454800; 570200, following UTM 10 NAD 83 coordinates summer and do not necessarily fill with 4455000; 570600, 4455900; 570000, (E, N): 602400, 4401600; 601900, water every year; including but not 4456100; 569500, 4456300; 569300, 4401800; 601800, 4402000; 601500, limited to vernal pools on Redding and 4456500; 568900, 4456500; 568600, 4401900; 601000, 4401900; 600400, Corning soils on high terrace landforms, 4456500; 568000, 4456800; 567900, 4402100; 599600, 4402100; 599400, and 4457100; 567900, 4458000; 568400, 4403400; 599100, 4403200; 598300, (ii) The geographic, topographic, and 4458800; 569100, 4459800; 569600, 4403400; 597100, 4403700; 596400, edaphic features that support 4460500; 569500, 4460800; 569000, 4404200; 596300, 4404800; 595100, aggregations or systems of 4460600; 568300, 4460700; 567500, 4405000; 595100, 4405600; 595400, hydrologically interconnected pools, 4460700; 566800, 4460000; 566400, 4406000; 595400, 4407100; 595500, swales, and other ephemeral wetlands 4460000; 565900, 4461100; 565800, 4407100; 595700, 4407300; 595700, and depressions within a matrix of 4461400; 565800, 4461700; 566000, 4407400; 596100, 4407400; 596400, surrounding uplands that together form 4462000; 565800, 4462300; 565300, 4408000; 596400, 4408100; 596100, hydrologically and ecologically 4463200; 566400, 4464000; 566700, 4408200; 596100, 4408400; 596200, functional units called vernal pool 4464200; 566800, 4464100; 567600, 4408600; 595900, 4408800; 595700, complexes. These features contribute to 4463400; 568300, 4463200; 569800, 4408800; 595500, 4408200; 594300, the filling and drying of the vernal pool, 4463200; 570600, 4463900; 570800, 4408200; 594100, 4408300; 594000, and maintain suitable periods of pool 4464300; 572000, 4465200; 572000, 4408400; 593600, 4408500; 593400, inundation, water quality, and soil 4466300; 572100, 4466600; 572800, 4408200; 592600, 4408200; 592500, moisture for vernal pool crustacean 4467300; 573500, 4468600; 573400, 4408700; 592100, 4408500; 592000, hatching, growth and reproduction, and 4469000; 573100, 4469400; 572900, 4408700; 591400, 4408700; 590700, dispersal, but not necessarily every year. 4469600; 572600, 4469600; 571800, 4408700; 590400, 4408300; 589900, (3) Existing man-made features and 4468800; 571400, 4468100; 570700, 4408300; 589000, 4408600; 589000, structures, such as buildings, roads, 4467600; 570300, 4467700; 570300, 4409300; 589100, 4409900; 588900, railroads, airports, runways, other paved 4467900; 570700, 4469000; 570700, 4410200; 588200, 4410300; 588200, areas, lawns, and other urban 4469400; 569900, 4470200; 569600, 4411000; 587900, 4411400; 587900, landscaped areas do not contain one or 4470200; 569300, 4470200; 569000, 4412000; 587900, 4412400; 587600, more of the primary constituent 4470600; 569000, 4471300; 569400, 4412700; 587600, 4413400; 584200, elements. Federal actions limited to 4472000; 569500, 4472400; 569900, 4413400; 583100, 4413100; 582900, those areas, therefore, would not trigger 4472400; 570400, 4472300; 572100, 4413400; 582900, 4415900; 582000, a consultation under section 7 of the Act 4472800; 572700, 4472500; 574100, 4418300; 581800, 4419200; 582000, unless they may affect the species and/ 4473200; 575100, 4473200; 575600, 4419500; 581400, 4420000; 581400, or primary constituent elements in 4473500; 576000, 4473900; 576600, 4420400; 581800, 4420700; 581600, adjacent critical habitat. 4473900; 577300, 4473900; 577700, 4421000; 583200, 4422600; 583500, (4) Unit 1: Shasta County, California. 4474200; 578600, 4474200; 579300, 4423600; 585200, 4424500; 586000, (i) From USGS 1:24,000 quadrangle 4474400; 580000, 4474400; 580600, 4424500; 587500, 4426100; 588200, maps Balls Ferry, Cottonwood, 4474700; 581900, 4474700; 582400, 4426500; 588600, 4429100; 588800, Enterprise, and Palo Cedro, California, 4475300; 583000, 4475400; 583200, 4430200; 589500, 4429500; 589500, land bounded by the following UTM 10 4475400; 583700, 4475000; 584200, 4428600; 591400, 4425800; 592600, NAD 83 coordinates (E, N): 564200, 4475200; 584600, 4475200; 585400, 4424100; 593400, 4422300; 594200, 4480800; 564000, 4480800; 563600, 4474500; 586000, 4473600; 586100, 4421100; 595900, 4417800; 595800, 4480900; 563300, 4481000; 563100, 4473400; 585800, 4472600; 585500, 4417300; 595800, 4416600; 596100, 4480900; 562900, 4480900; 562500, 4472100; 584800, 4471900; 584500, 4416600; 596400, 4416800; 596600, 4481200; 562400, 4481500; 562400, 4471600; 584500, 4471400; 584700, 4416800; 597100, 4416400; 597100, 4481700; 562300, 4482400; 562000, 4471100; 584700, 4470800; 584500, 4415600; 596800, 4415200; 597100, 4482500; 561900, 4482800; 561800, 4470500; 583400, 4469700; 583100, 4415000; 597800, 4415500; 598100, 4483300; 561500, 4483700; 561000, 4469400; 582600, 4468500; 582600, 4415200; 597600, 4414600; 597600, 4484000; 560700, 4485400; 560700, 4467600; 582700, 4466900; 582700, 4414400; 597300, 4413800; 597300, 4486500; 560800, 4486700; 561000, 4466700; 581900, 4465800; 581000, 4413300; 598200, 4413900; 598400, 4486900; 561200, 4487000; 561300, 4465500; 580600, 4465200; 580400, 4413900; 598400, 4413600; 597400, 4487600; 561600, 4487900; 562000, 4464000; 580200, 4463300; 578900, 4411900; 597600, 4411900; 598300, 4487900; 562500, 4487400; 562700, 4462700; 578500, 4462300; 578100, 4412700; 598500, 4413300; 598900, 4487100; 562900, 4487200; 563200, 4462000; 577800, 4460900; 577700, 4413300; 598900, 4411800; 599400, 4487200; 563300, 4487000; 563300, 4460000; 576700, 4459300; 576600, 4411700; 599800, 4411700; 599800, 4486700; 563800, 4486400; 564300, 4458800; 576800, 4458300; 576800, 4411000; 597700, 4409400; 597000, 4484700; 564300, 4484400; 564700, 4457100; 576400, 4456700; 575500, 4408500; 596800, 4408300; 596800, 4483800; 564900, 4483600; 564900, 4456800; 574900, 4456800; 574100, 4407500; 597300, 4407500; 597300, 4483400; 564500, 4483000; 564500, 4455900; 573500, 4455600; 572300, 4408000; 597900, 4407500; 598100, 4482800; 564600, 4482700; 564600, 4455300; 572000, 4455300; 571600, 4407500; 598100, 4407100; 597700,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00113 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59996 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

4406800; 597800, 4406700; 597500, 611500, 4392500; 611700, 4392200; 4337200; 585600, 4337500; 585600, 4406500; 597300, 4406700; 597100, 611700, 4391900; 611100, 4391400; 4338300; 586100, 4338400; 586800, 4406600; 597500, 4406100; 597100, 611500, 4391300; 612500, 4390200; 4338900; 587000, 4338900; 587200, 4405900; 597600, 4405100; 598000, 613300, 4389600; 613300, 4388900; 4338500; 587100, 4338400; 587600, 4405300; 598400, 4404700; 598500, 614500, 4388900; 616000, 4389200; 4337800; 587700, 4337800; 588800, 4404800; 598200, 4405300; 599000, 616800, 4390700; 617200, 4390700; 4336700; 588900, 4336700; 589100, 4405800; 598900, 4406100; 598700, 618600, 4390600; 618800, 4390200; 4336900; 589300, 4336900; returning to 4406000; 598500, 4406000; 598500, 618800, 4389700; 617800, 4388300; 589300, 4335900. 4407200; 598300, 4407200; 598300, 617200, 4387700; 616700, 4387500; (10) Unit 7: Yuba County, California. 4407500; 598200, 4407800; 598700, 616200, 4386300; 615500, 4385200; (i) From USGS 1:24,000 quadrangle 4408400; 599900, 4409000; 600100, 616400, 4384800; 617300, 4386500; maps Browns Valley and Wheatland, 4409000; 600300, 4408800; 600300, 618500, 4387700; 619500, 4387900; California, land bounded by the 4408400; 600000, 4408100; 600400, 620400, 4388400; 620700, 4388400; following UTM 10 NAD 83 coordinates 4407600; 599500, 4406700; 599500, 620700, 4387200; 621300, 4387200; (E, N): 636300, 4327700; 635600, 4406200; 600300, 4406000; 601200, 621600, 4386500; 621400, 4385600; 4327700; 635300, 4327800; 635300, 4405600; 601800, 4405600; 602000, 620900, 4385500; 620600, 4384900; 4328800; 634800, 4329000; 634800, 4405500; 602200, 4405200; 602500, 620400, 4384800; 619600, 4385100; 4329700; 634600, 4329900; 633800, 4405200; 602700, 4404900; 603300, 618600, 4384500; 618500, 4382500; 4329900; 633600, 4330100; 633500, 4404700; 604500, 4404200; 605200, 619300, 4381300; 619500, 4381000; 4330100; 632800, 4329700; 632700, 4404200; 605600, 4404000; 605600, 619500, 4380500; 620800, 4378900; 4328800; 631300, 4328800; 631300, 4403600; 605100, 4403300; 604700, 620900, 4378400; 620300, 4377700; 4329300; 631400, 4329300; 631400, 4403400; 604500, 4403300; 604400, 618800, 4377000; 617800, 4376400; 4330600; 632400, 4330700; 632800, 4402800; 603600, 4402100; 602900, 617100, 4376200; 616900, 4376000; 4330700; 633000, 4330900; 633000, 4402100; returning to 602400, 4401600. 617500, 4374800; 617500, 4374500; 4331300; 633100, 4331500; 633500, (7) Unit 4: Butte County, California. 617300, 4374200; returning to 614900, 4331700; 633800, 4331500; 633800, (i) From USGS 1:24,000 quadrangle 4374100. 4332300; 631500, 4332200; 631500, maps Cherokee, Chico, Hamlin Canyon, (8) Unit 5: Colusa and Glenn Counties, 4333900; 632400, 4333900; 632400, Oroville, and Shippee, California, land California. 4335400; 633300, 4335800; 633700, bounded by the following UTM 10 NAD (i) From USGS 1:24,000 quadrangle 4336300; 634100, 4336400; 634900, 83 coordinates (E, N): 614900, 4374100; maps Logandale, Maxwell, Moulton 4336700; 635100, 4336600; 635200, 614400, 4374700; 614000, 4374700; Weir, and Princeton, California, land 4336400; 635700, 4336400; 636000, 614000, 4376000; 614400, 4376800; bounded by the following UTM 10 NAD 4336400; 636100, 4335900; 635900, 614700, 4377000; 615900, 4377000; 83 coordinates (E, N): 572900, 4357400; 4335800; 636000, 4335200; 636500, 616300, 4377000; 616300, 4378100; 571200, 4357400; 571200, 4358200; 4335100; 637100, 4335300; 637400, 614500, 4378100; 614500, 4378900; 570400, 4358200; 570400, 4359000; 4334700; 637800, 4334700; 637700, 612600, 4378900; 612200, 4380400; 569600, 4359000; 569500, 4360500; 4333600; 638200, 4333400; 638200, 612200, 4382600; 612500, 4383300; 569300, 4362200; 569500, 4363300; 4332600; 637600, 4332600; 637600, 613600, 4384200; 614200, 4384800; 569500, 4367200; 570000, 4367200; 4331900; 636900, 4332100; 636700, 613000, 4386100; 612300, 4386300; 569900, 4368400; 570300, 4368400; 4332300; 636600, 4332500; 636100, 612000, 4386100; 611300, 4384500; 571000, 4367600; 571000, 4367800; 4334000; 636700, 4334300; 636600, 611300, 4383600; 610100, 4382100; 570700, 4368500; 570900, 4368800; 4334500; 636000, 4334200; 635400, 608500, 4383300; 608800, 4383800; 571500, 4368800; 571900, 4368300; 4336000; 634500, 4336000; 634500, 609500, 4384200; 609500, 4384500; 571900, 4367600; 572100, 4367600; 4335100; 634400, 4334700; 635100, 609200, 4385000; 609500, 4385300; 572400, 4368100; 572400, 4368400; 4332600; 636000, 4330500; 636400, 609300, 4385800; 609500, 4386100; 572600, 4368900; 572800, 4368900; 4330300; 636500, 4329300; 637100, 610500, 4386700; 611100, 4387100; 573000, 4368100; 573400, 4368000; 4328800; 636900, 4327900; returning to 611400, 4387400; 610400, 4388500; 573800, 4367600; 574100, 4367300; 636300, 4327700. 609300, 4388100; 609300, 4387900; 574400, 4367200; 574500, 4366400; (11) Unit 8: Sacramento County, 608500, 4387700; 608500, 4389000; 574900, 4366400; 574900, 4365600; California. 607900, 4389000; 607200, 4389500; 574700, 4365500; 574400, 4364100; (i) From USGS 1:24,000 quadrangle 607100, 4391000; 605700, 4392300; 575200, 4363900; 575600, 4363600; maps Buffalo Creek, Carmichael, Elk 605300, 4393200; 605300, 4393900; 575100, 4362400; 575600, 4361400; Grove, Folsom SE, and Sloughhouse, 604800, 4394600; 604600, 4395600; 575100, 4360700; 576000, 4359600; California, land bounded by the 604000, 4395700; 603900, 4396700; 575500, 4358900; 575700, 4358300; following UTM 10 NAD 83 coordinates 603600, 4396800; 603600, 4398000; 575900, 4357700; 575300, 4357800; (E, N): 650400, 4257200; 650200, 602900, 4398200; 603000, 4398800; 575000, 4357700; 574700, 4357700; 4257200; 650200, 4258300; 649600, 603100, 4399000; 602600, 4399400; 573600, 4357800; 573500, 4358200; 4258300; 649600, 4257400; 649400, 602600, 4399600; 603500, 4399800; 572900, 4358200; returning to 572900, 4257400; 649400, 4259000; 649100, 604700, 4400200; 605100, 4399600; 4357400. 4259000; 649100, 4258500; 648500, 606500, 4399500; 607200, 4399100; (9) Unit 6: Colusa County, California. 4258500; 648500, 4257400; 648200, 607400, 4399100; 607700, 4398100; (i) From USGS 1:24,000 quadrangle 4257400; 648100, 4258300; 647700, 607700, 4397800; 606200, 4396500; maps Colusa and Meridian, California, 4258600; 647700, 4258900; 648000, 606200, 4395800; 608300, 4396100; land bounded by the following UTM 10 4259300; 647700, 4259600; 646800, 610900, 4397700; 611900, 4398300; NAD 83 coordinates (E, N): 589300, 4259200; 646500, 4258800; 646500, 612300, 4398300; 612600, 4398600; 4335900; 587800, 4335900; 587600, 4258700; 645800, 4258700; 646100, 612900, 4398300; 611900, 4397200; 4336100; 587300, 4336400; 587100, 4259000; 646100, 4260000; 646400, 611800, 4396600; 611100, 4395800; 4336800; 586700, 4337700; 586400, 4260100; 646600, 4260400; 646100, 609400, 4393900; 609800, 4393600; 4337700; 586400, 4336800; 586300, 4260800; 645300, 4261200; 645000, 610900, 4392400; 611300, 4392500; 4336600; 586000, 4336600; 585600, 4260700; 644800, 4260700; 644400,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00114 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59997

4261400; 644400, 4262400; 643800, 4265800; 660900, 4266100; 661200, 656600, 4242600; 657100, 4242700; 4262400; 643600, 4262800; 643200, 4265900; 661300, 4265500; 661300, 658600, 4244000; 658600, 4244700; 4262800; 643200, 4263300; 643500, 4264900; 661700, 4264800; 661700, 659100, 4244800; 659100, 4245600; 4263300; 643700, 4263200; 643700, 4264400; 661400, 4264100; 660600, 659700, 4245600; 659800, 4245100; 4263800; 645200, 4263800; 645200, 4264400; 660600, 4264700; 660800, 659400, 4244900; 659700, 4244500; 4262800; 644800, 4262700; 644800, 4264900; 660500, 4265300; 660100, 660000, 4244500; 660100, 4243100; 4262300; 645300, 4262300; 645300, 4265200; 660300, 4264600; 659800, 661700, 4243100; 662600, 4243000; 4261900; 645000, 4261700; 645300, 4264500; 659700, 4264000; 659300, 663300, 4243300; 663000, 4243900; 4261500; 645400, 4261700; 646000, 4263900; 659100, 4263700; 658800, 662500, 4243900; 662700, 4244700; 4262100; 645800, 4262400; 646000, 4263700; 658500, 4264200; 658500, 663000, 4244900; 663100, 4245400; 4262700; 646400, 4262600; 646700, 4264400; 658000, 4265500; 657600, 664200, 4245600; 664500, 4245600; 4262700; 646600, 4263900; 647400, 4265000; 657500, 4264300; 657900, 664600, 4245200; 665000, 4245300; 4263900; 647600, 4263700; 647800, 4263900; 657700, 4263600; 657200, 664800, 4246100; 664600, 4246300; 4264300; 648100, 4264300; 648300, 4263600; 657200, 4263100; 657600, 663700, 4246500; 662500, 4246100; 4264100; 648600, 4264400; 647400, 4263000; 657700, 4262900; 657700, 662100, 4246400; 661700, 4246400; 4265200; 647200, 4265200; 647000, 4262800; 657400, 4262700; 656700, 661700, 4246800; 661900, 4247000; 4264500; 645900, 4264600; 645300, 4262700; 656500, 4262500; 656300, 661600, 4247300; 661100, 4247300; 4265100; 645600, 4265500; 645800, 4262500; 656300, 4262000; 655900, 660600, 4246900; 659900, 4246900; 4265600; 646000, 4266200; 646300, 4261800; 655800, 4261200; 656100, 659500, 4247300; 659500, 4248400; 4266600; 646300, 4268100; 646600, 4260700; 655900, 4260300; 655200, 658600, 4248400; 658600, 4246800; 4268400; 646600, 4268700; 646700, 4260700; 654900, 4260400; 653500, 658400, 4246600; 658400, 4246100; 4268800; 646800, 4268800; 647100, 4261300; 653200, 4261000; 653100, 658100, 4246000; 657400, 4246000; 4268400; 647100, 4268200; 646900, 4262300; 652800, 4262300; 652800, 657400, 4245000; 657000, 4244900; 4268000; 646900, 4267500; 649100, 4261400; 652600, 4261300; 652300, 656700, 4244800; 656400, 4245100; 4268900; 649300, 4269000; 649600, 4261400; 651700, 4261800; 651600, 656100, 4245200; 656100, 4246100; 4262100; 650700, 4262100; 650700, 4269600; 649800, 4269600; 649800, 654900, 4246600; 654900, 4245800; 4261800; 651100, 4261700; 651200, 4268700; 650400, 4269000; 650800, 655100, 4245200; 655100, 4244900; 4261400; 651200, 4260600; 651000, 4268800; 650900, 4268900; 650800, 654600, 4244900; 654600, 4244100; 4260400; 650400, 4260400; 650400, 4269200; 650300, 4269700; 650100, 654600, 4243400; 653900, 4243300; 4259300; 651600, 4259300; 651500, 4269700; 650000, 4270100; 650300, 653300, 4243500; 653400, 4244300; 4260900; 652000, 4260900; 652100, 4270200; 650600, 4270000; 650700, 652200, 4244500; 652000, 4244800; 4260300; 653000, 4260400; 653200, 4270100; 650700, 4270300; 650900, 652300, 4245200; 652800, 4245200; 4260300; 653900, 4260400; 654700, 4270400; 651200, 4270800; 652200, 653500, 4245300; 653600, 4245800; 4259900; 654000, 4258600; 653700, 4269200; 652300, 4269400; 652500, 653300, 4246000; 653300, 4247300; 4258600; 653000, 4259300; 652200, 653600, 4247300; 653700, 4247100; 4269700; 652400, 4270100; 652200, 4259800; 652100, 4259600; 652800, 4271000; 652700, 4271000; 652700, 4259100; 652800, 4258600; 652400, 654200, 4247100; 654600, 4247500; 4270500; 653100, 4270500; 653400, 4258200; 652300, 4258100; 652000, 654600, 4248600; 654800, 4248900; 4270800; 653600, 4270800; 653800, 4258100; 651400, 4258400; 650700, 654600, 4249100; 654500, 4249400; 4270400; 654400, 4270800; 654800, 4257600; returning to 650400, 4257200. 653800, 4249400; 653800, 4248600; 4270900; 655200, 4271100; 655500, (12) Unit 9: Amador, Sacramento, and 653600, 4248400; 653300, 4248400; 4271100; 655800, 4270900; 656000, San Joaquin counties, California. 653200, 4249400; 652600, 4249700; 4270900; 657000, 4272200; 657400, (i) From USGS 1:24,000 quadrangle 652300, 4250100; 652300, 4251100; 4272200; 657700, 4272500; 658200, maps Carbondale, Clay, Elk Grove, Galt, 652900, 4251100; 653100, 4251100; 4273800; 658900, 4274000; 659200, Goose Creek, Irish Hill, and 653300, 4251200; 653100, 4251400; 4273700; 659400, 4273400; 659400, Sloughhouse, California, land bounded 653000, 4251800; 652700, 4252000; 4273100; 659100, 4272900; 658700, by the following UTM 10 NAD 83 652700, 4252300; 653100, 4252500; 4272900; 658500, 4272500; 658800, coordinates (E, N): 660400, 4236800; 653100, 4253400; 653800, 4253600; 4272400; 659500, 4272400; 659500, 660300, 4236800; 660100, 4237500; 654000, 4253200; 654100, 4253200; 4271500; 660300, 4271500; 661100, 659700, 4237700; 659700, 4238100; 654700, 4253500; 654600, 4253800; 4271300; 661100, 4271800; 661500, 660200, 4238400; 659700, 4238900; 654800, 4254000; 655400, 4253800; 4272400; 661700, 4272400; 661900, 659500, 4238900; 659300, 4238100; 655500, 4253600; 655600, 4253700; 4272300; 661900, 4271700; 662200, 659000, 4238300; 658800, 4238400; 656200, 4254000; 656400, 4253900; 4272200; 662200, 4272600; 662400, 658300, 4238400; 658200, 4238300; 657000, 4253700; 657300, 4254500; 4272700; 662600, 4272700; 662900, 657800, 4238300; 657100, 4239000; 657200, 4254900; 656700, 4255100; 4272400; 663300, 4272400; 663400, 657200, 4239400; 657400, 4239700; 656800, 4255400; 657000, 4255500; 4272200; 663400, 4271900; 663100, 658000, 4239900; 661500, 4239900; 657200, 4255500; 657400, 4255300; 4271700; 662600, 4271200; 662300, 661500, 4241900; 661900, 4242100; 657400, 4255100; 657800, 4255100; 4270600; 661900, 4270700; 661900, 661600, 4242400; 661000, 4242500; 657900, 4255800; 658100, 4255900; 4271000; 661600, 4271000; 661400, 660700, 4241900; 660400, 4241500; 658300, 4255800; 658400, 4255600; 4270800; 661000, 4270800; 660700, 659400, 4241500; 659400, 4241800; 658200, 4255300; 658200, 4255000; 4270300; 660600, 4270000; 660100, 659200, 4241800; 659200, 4241700; 658300, 4254700; 658200, 4254500; 4269800; 660400, 4268700; 660800, 659000, 4241600; 658700, 4241700; 657800, 4254500; 657800, 4254200; 4267700; 661200, 4268100; 661400, 658500, 4241700; 658500, 4240500; 658100, 4254000; 658900, 4253500; 4268100; 661400, 4267400; 661800, 657800, 4240400; 657000, 4240400; 659200, 4253600; 659900, 4254700; 4267400; 662100, 4266900; 662000, 657000, 4241300; 656500, 4241300; 660000, 4255100; 660200, 4255400; 4266300; 661600, 4266400; 661200, 655900, 4241600; 655100, 4241200; 660700, 4255400; 660800, 4256000; 4267200; 660900, 4267200; 660800, 654900, 4241900; 655800, 4242400; 660600, 4256200; 660300, 4256100; 4266500; 660100, 4266000; 660600, 655800, 4243100; 656200, 4243100; 660100, 4256000; 659500, 4256200;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00115 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 59998 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

659800, 4256900; 660400, 4256800; 672300, 4249800; 672000, 4250000; 4231600; 588200, 4231800; 587800, 660600, 4256700; 660700, 4256800; 671500, 4249700; 671200, 4249700; 4231700; 587100, 4231900; 586600, 660500, 4257100; 660700, 4257500; 670800, 4249300; 670800, 4249000; 4232600; 586300, 4232600; 586000, 660100, 4257800; 659600, 4257800; 671100, 4248800; 671100, 4248500; 4232200; 585600, 4232200; 585000, 659300, 4258100; 659500, 4258400; 670800, 4248200; 670400, 4248100; 4232500; 584900, 4233000; 584500, 659700, 4258500; 659500, 4258800; 670400, 4247700; 671200, 4247700; 4233000; 584500, 4233400; 584000, 659600, 4259100; 659500, 4259300; 671600, 4247900; 671900, 4247800; 4233300; 584200, 4233700; 584500, 659900, 4259900; 660100, 4260000; 672000, 4247600; 672500, 4247600; 4233900; 584500, 4233800; 584600, 660300, 4259900; 660500, 4259600; 672500, 4247200; 672000, 4246600; 4233800; 584700, 4233700; 584700, 660700, 4259500; 661200, 4259900; 671600, 4246600; 671800, 4246000; 4233600; 584900, 4233600; 584900, 661500, 4259900; 661600, 4259800; 671200, 4245300; 672200, 4245100; 4233400; 585700, 4233300; 585700, 661600, 4259300; 661900, 4259300; 672400, 4244600; 672600, 4244300; 4233000; 586100, 4233000; 586200, 662100, 4259600; 662400, 4259600; 672600, 4244100; 672000, 4243900; 4233100; 586400, 4233100; 586500, 662700, 4259100; 662900, 4258900; 671600, 4243700; 670900, 4243600; 4233000; 586800, 4233000; 586900, 663400, 4259100; 664000, 4259100; 671100, 4243200; 671700, 4243100; 4233000; 587100, 4232900; 587100, 664400, 4259000; 664800, 4258700; 671700, 4242700; 670700, 4242100; 4232800; 587300, 4232700; 587600, 665000, 4258500; 665400, 4258700; 669800, 4242100; 669300, 4241800; 4232500; 588600, 4232500; 588600, 665900, 4258800; 666500, 4258800; 668800, 4241800; 668600, 4241500; 4232800; 588400, 4233000; 588600, 666700, 4258600; 666600, 4258200; 668200, 4241700; 668000, 4242000; 4233300; 588700, 4233500; 589300, 666300, 4258000; 666100, 4257400; 667000, 4241300; 666800, 4240700; 4233500; 590600, 4233500; 591200, 666000, 4257300; 666000, 4257000; 666500, 4240100; 666200, 4239900; 4232900; 592900, 4234300; 593900, 666400, 4257000; 666500, 4257600; 664700, 4239800; 664600, 4239600; 4235300; 594000, 4235100; 594200, 666800, 4257600; 666900, 4257400; 664600, 4238900; 663900, 4238500; 4235000; 594800, 4235400; 594500, 666900, 4257100; 666700, 4256900; 663800, 4238500; 662800, 4237400; 4235700; 596500, 4237600; 596300, 666800, 4256700; 666700, 4256300; 662400, 4237500; 662000, 4237900; 4237800; 594300, 4235900; 594000, 661900, 4237900; 661800, 4237400; 666600, 4256100; 667200, 4256100; 4236300; 594500, 4236700; 594100, 661500, 4237200; 660900, 4237200; 667400, 4256300; 667600, 4256300; 4237400; 593500, 4237400; 593500, returning to 660400, 4236800. 4238200; 592600, 4238200; 592600, 667800, 4256100; 667900, 4256300; (13) Unit 10: Yolo County, California. 668100, 4256300; 668400, 4255900; (i) From USGS 1:24,000 quadrangle 4237500; 591200, 4237800; 590100, 668600, 4255900; 668800, 4256200; maps Davis and Saxon, California, land 4237800; 590100, 4236600; 590400, 669100, 4256400; 669400, 4256600; bounded by the following UTM 10 NAD 4236600; 590400, 4235900; 590700, 669500, 4256800; 669200, 4257300; 83 coordinates (E, N): 615400, 4260700; 4235500; 590700, 4234200; 590500, 669200, 4257900; 668800, 4258100; 614500, 4260700; 614500, 4261500; 4234100; 589400, 4234000; 589000, 668700, 4258600; 668500, 4258600; 614200, 4261500; 614200, 4261800; 4234400; 588500, 4234400; 588500, 668000, 4258700; 667900, 4258900; 614000, 4261800; 614000, 4262400; 4236400; 588400, 4236400; 588400, 668100, 4259200; 668500, 4259200; 615400, 4262400; returning to 615400, 4236300; 588200, 4236200; 588000, 668800, 4258900; 669700, 4259700; 4260700. 4236400; 587700, 4236500; 586900, 670000, 4259800; 669700, 4260200; (14) Unit 11: Solano County, 4236500; 586900, 4237200; 587000, 669800, 4260400; 670000, 4260500; California. 4237300; 586800, 4237300; 586800, 670200, 4260400; 670700, 4260600; (i) From USGS 1:24,000 quadrangle 4238100; 586100, 4238700; 585600, 671200, 4260500; 671500, 4260700; maps Birds Landing, Denverton, Dozier, 4238700; 585600, 4238800; 586100, 671700, 4260700; 671800, 4260200; Elmira, Fairfield North Fairfield South, 4239100; 586100, 4239200; 587800, 671700, 4259800; 671400, 4259800; Liberty Island, and Rio Vista, California, 4239200; 588100, 4239600; 588300, 671200, 4260200; 670900, 4259900; land bounded by the following UTM 10 4239600; 588700, 4239800; 589200, 671000, 4259600; 671000, 4259200; NAD 83 coordinates (E, N): 596500, 4240000; 589500, 4240600; 589500, 670700, 4259000; 670700, 4258800; 4224300; 596200, 4224400; 595700, 4240900; 589100, 4241400; 590100, 670800, 4258600; 670600, 4258300; 4224600; 595700, 4224800; 596000, 4241400; 590600, 4241400; 590800, 669500, 4258000; 669700, 4257800; 4225800; 596300, 4226800; 596200, 4241600; 591100, 4241600; 591100, 670000, 4257400; 670100, 4257200; 4227000; 596100, 4227600; 595800, 4241300; 591600, 4241300; 591600, 670300, 4257200; 670400, 4257000; 4227700; 595600, 4228300; 595400, 4242600; 591700, 4242900; 592200, 670300, 4256600; 670400, 4256500; 4228700; 595500, 4229200; 595500, 4242900; 592200, 4243100; 592400, 671000, 4256800; 671500, 4256800; 4229600; 595700, 4229900; 595700, 4243200; 592700, 4243200; 592700, 671700, 4256900; 672000, 4256900; 4230600; 594500, 4231200; 593800, 4243600; 592900, 4243600; 593300, 672200, 4256600; 672200, 4256400; 4231200; 593600, 4230500; 594200, 4243800; 593700, 4243000; 595000, 673000, 4256700; 673400, 4256600; 4230100; 594400, 4228900; 594400, 4243000; 595400, 4242100; 595400, 673600, 4256500; 673700, 4256200; 4228400; 594000, 4228200; 593400, 4241600; 598600, 4241600; 598600, 673600, 4255800; 673400, 4255400; 4227700; 592600, 4227700; 591400, 4242500; 599400, 4242500; 599200, 673300, 4255100; 673800, 4255100; 4226900; 590900, 4226800; 590300, 4244200; 599500, 4244500; 600400, 674000, 4255000; 674200, 4254700; 4227100; 589500, 4227200; 589000, 4244500; 600700, 4244300; 600700, 674300, 4254400; 674700, 4254100; 4227100; 587500, 4227700; 586800, 4244000; 603400, 4244000; 603500, 674800, 4253800; 674700, 4253600; 4228000; 586400, 4228800; 586000, 4244000; 603900, 4243300; 604000, 674300, 4253300; 674600, 4252200; 4229000; 585700, 4229300; 584900, 4243200; 604000, 4242600; 604700, 674700, 4251800; 674600, 4251500; 4229300; 584700, 4229500; 584600, 4241400; 605600, 4240800; 606200, 674100, 4251300; 673700, 4251300; 4230300; 584800, 4230700; 585200, 4240800; 606300, 4240600; 606300, 674100, 4251000; 674200, 4250400; 4230800; 585600, 4231400; 587400, 4239700; 606500, 4239600; 607100, 674500, 4250000; 674400, 4249600; 4231300; 587600, 4231500; 587800, 4239000; 607700, 4239000; 609300, 674100, 4249500; 673700, 4249600; 4231500; 589000, 4231200; 589100, 4239700; 609500, 4239700; 610300, 673400, 4249700; 673100, 4249600; 4231300; 589100, 4231700; 588600, 4239200; 610700, 4238900; 610700,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00116 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 59999

4236200; 610800, 4232600; 610900, 702100, 4173600; 701200, 4171800; 732600, 4135000; 732300, 4135500; 4232500; 610900, 4229500; 610500, 702000, 4171800; returning to 702000, 730300, 4135400; 729900, 4135700; 4228200; 611000, 4228000; 611900, 4169700. 729900, 4136500; 726500, 4136500; 4228000; 612400, 4228400; 612800, (17) Unit 14: Alameda County, 726400, 4136100; 725900, 4136100; 4228600; 613100, 4228600; 613400, California. 725900, 4135300; 725600, 4135100; 4228200; 612900, 4227800; 612500, (i) From USGS 1:24,000 quadrangle 725500, 4135100; 725300, 4135500; 4227300; 611900, 4227100; 611000, maps Milpitas and Niles, California, 725100, 4135400; 725000, 4135400; 4227100; 610700, 4227400; 610100, land bounded by the following UTM 10 725000, 4135600; 724800, 4135700; 4227200; 609800, 4226500; 608100, NAD 83 coordinates (E, N): 591200, 724600, 4135700; 724600, 4134700; 4226000; 602900, 4225600; 600600, 4148600; 590700, 4148600; 590300, 724200, 4134700; 724200, 4135500; 4225400; 599000, 4225300; 597600, 4149100; 589300, 4150400; 589700, 723400, 4135500; 723400, 4135600; 4226000; 597500, 4225900; 597500, 4150600; 590500, 4150200; 590600, 722800, 4135600; 722800, 4135000; 4225100; 597100, 4224900; 596700, 4150400; 590400, 4150500; 590500, 722600, 4135000; 722600, 4134700; 4224900; 596700, 4224400; returning to 4150600; 590700, 4150500; 590900, 722500, 4134700; 722200, 4137900; 596500, 4224300. 4150700; 590400, 4151200; 591100, 722800, 4137900; 722800, 4139300; (15) Unit 12: Solano County, 4151600; 591300, 4151600; 591400, 721900, 4139300; 721900, 4140200; 4151500; 591400, 4151400; 591300, California. 721000, 4140200; 721000, 4140900; (i) From USGS 1:24,000 quadrangle 4151100; 591500, 4150900; 591600, 717800, 4140900; 717700, 4142400; maps Antioch North and Honker Bay, 4150700; 591800, 4150700; 592000, 714500, 4142400; 714500, 4144900; California, land bounded by the 4150900; 592300, 4150600; 592300, 715500, 4144900; 715500, 4145700; following UTM 10 NAD 83 coordinates 4150400; 592200, 4150000; 592100, 717000, 4145800; 718000, 4145400; (E, N): 600900, 4215500; 599300, 4149600; 592000, 4149500; 591600, 4215500; 598400, 4216900; 598316, 4149500; 591600, 4148800; returning to 718200, 4145900; 718200, 4147600; 6875000; 4217900; 598400, 4217900; 591200, 4148600. 719700, 4148400; 720600, 4148600; 598800, 4218100; 598800, 4218600; (18) Unit 15: Madera, Mariposa, and 720600, 4149200; 719600, 4149200; 599000, 4219000; 599200, 4219300; Merced Counties, California. 719600, 4149800; 720300, 4149800; 599400, 4219500; 600600, 4216900; (i) From USGS 1:24,000 quadrangle 721300, 4150700; 721700, 4150700; returning to 600900, 4215500. maps Haystack Mtn., Illinois Hill, 724400, 4153300; 725000, 4153500; (16) Unit 13: Stanislaus County, Indian Gulch, Le Grand, Merced, 725500, 4154200; 725800, 4154800; California. Merced Falls, Owens Reservoir, 727200, 4155900; 727800, 4155900; (i) From USGS 1:24,000 quadrangle Plainsburg, Planada, Raynor Creek, 728500, 4155600; 730200, 4155600; maps Knights Ferry, Oakdale, Paulsell, Snelling, Winton, and Yosemite Lake, 731600, 4155500; 732400, 4155400; and Waterford, California, land bounded California, land bounded by the 732600, 4155200; 733200, 4154700; by the following UTM 10 NAD 83 following UTM 10 NAD 83 coordinates 734100, 4154900; 734600, 4154800; coordinates (E, N): 702000, 4169700; (E, N): 751800, 4114900; 751600, 735600, 4156000; 735900, 4156000; 700400, 4169700; 700100, 4169800; 4115400; 752000, 4115800; 751900, 737100, 4155400; 737800, 4155000; 700100, 4170700; 699500, 4171100; 4116000; 751400, 4116100; 751100, 738200, 4154200; 738300, 4153300; 698500, 4171200; 698500, 4172000; 4116300; 751100, 4116700; 750700, 739000, 4152800; 739100, 4152200; 697800, 4172300; 697100, 4171200; 4116700; 749900, 4116500; 744700, 740200, 4151800; 740800, 4151500; 696000, 4171200; 694000, 4171200; 4116500; 744600, 4117600; 743600, 740800, 4150300; 741100, 4149900; 694000, 4172100; 694500, 4172100; 4117800; 743300, 4118600; 742800, 741700, 4149400; 742100, 4148500; 694500, 4174500; 696300, 4174500; 4118600; 742800, 4118900; 742300, 742100, 4147100; 743400, 4146100; 696300, 4175300; 697300, 4175300; 4119000; 742300, 4119800; 742900, 744000, 4145600; 744400, 4144600; 697300, 4176200; 697700, 4176200; 4119900; 743300, 4120600; 745500, 744300, 4143900; 743900, 4142700; 697700, 4179300; 696600, 4179300; 4120700; 745800, 4121600; 745400, 744000, 4142000; 744200, 4141700; 696400, 4180000; 695800, 4180000; 4121600; 745400, 4121800; 746100, 745500, 4140300; 746100, 4139500; 695500, 4179500; 695000, 4179300; 4121800; 746200, 4122200; 747500, 746800, 4138500; 747700, 4137700; 694400, 4179300; 694400, 4179800; 4122400; 747500, 4123900; 747000, 748500, 4135800; 748700, 4135100; 694800, 4180400; 694500, 4180800; 4124700; 746900, 4125100; 743600, 749500, 4134000; 750700, 4131700; 694500, 4181000; 694900, 4181400; 4125000; 743600, 4127000; 742700, 751600, 4130500; 752000, 4130200; 694500, 4181600; 694500, 4181900; 4127000; 742600, 4126600; 742300, 752800, 4130100; 753300, 4130400; 695100, 4182200; 696100, 4182200; 4126300; 741700, 4126300; 741200, 753500, 4130400; 753900, 4130200; 696200, 4181800; 695700, 4181600; 4126800; 741200, 4128600; 740400, 754000, 4129300; 753400, 4128400; 696300, 4180500; 697000, 4180100; 4128600; 740400, 4130300; 739000, 753900, 4127700; 754400, 4127700; 697400, 4180100; 697600, 4180400; 4130300; 739000, 4130600; 738400, 754600, 4127400; 755300, 4128400; 697600, 4182600; 700300, 4182600; 4131100; 737500, 4131200; 737800, 755400, 4128400; 755600, 4127700; 700300, 4183400; 699400, 4183400; 4131700; 737700, 4132600; 737700, 756900, 4126400; 757800, 4125800; 699400, 4184100; 700800, 4185100; 4132900; 737100, 4132900; 737100, 758400, 4126300; 758500, 4126300; 704100, 4186300; 705300, 4187700; 4133400; 738100, 4133600; 738300, 758600, 4126000; 757900, 4125100; 705700, 4187700; 706500, 4187700; 4133600; 738800, 4133500; 741000, 757400, 4125100; 757800, 4124400; 706200, 4186800; 705600, 4185900; 4133500; 741000, 4133900; 741900, 757800, 4124000; 758200, 4124000; 706800, 4184600; 705500, 4183800; 4133900; 741800, 4135800; 741028, 758500, 4123600; 758800, 4123600; 705000, 4183100; 704800, 4181800; 4135800; 741000, 4135800; thence north 759000, 4123900; 759300, 4123900; 701800, 4181800; 701800, 4181500; to x-coordinate 741000 on Bear Creek; 759700, 4123500; 759700, 4123400; 701500, 4181100; 702000, 4179500; thence southwest along Bear Creek to y- 759200, 4122900; 760300, 4121300; 703200, 4179500; 702900, 4178300; coordinate 4133300; thence west to 761000, 4121000; 761300, 4120300; 703400, 4177000; 703400, 4176200; 734700, 4133300; 734700, 4133700; 762100, 4119500; thence south to x- 702000, 4176200; 702000, 4175100; 734100, 4133900; 733100, 4133900; coordinate 762100 on the Chowchilla 701600, 4175100; 701600, 4174200; 733100, 4134600; 732700, 4134600; River; thence southwest along the

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00117 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60000 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

Chowchilla River to Ash Slough; thence 696900, 4130200; 697200, 4130200; 695700, 4109000; 697300, 4109000; southwest along Ash Slough to y- 698300, 4128600; 698600, 4128200; 697300, 4108100; 696400, 4108100; coordinate 4114900; thence west to the 700100, 4127600; 700500, 4129200; 696400, 4107300; 696700, 4106600; point of beginning at 751800, 4114900. 700500, 4130600; 701700, 4130600; 697600, 4106600; 698200, 4105800; (19) Unit 16: Merced County, 701800, 4129200; 703300, 4129200; 698200, 4105300; returning to 697300, California. 703300, 4128800; 703900, 4128800; 4104500. (i) From USGS 1:24,000 quadrangle 703900, 4129000; 704200, 4129000; (20) Unit 17: Fresno County, maps Arena, Atwater, El Nido, Gustine, 705600, 4128500; 705600, 4127800; California. Ingomar, Los Banos, Plainsburg, San 705300, 4127000; 705400, 4126200; (i) From USGS 1:24,000 quadrangle Luis Ranch, Sandy Mush, Stevinson, 705900, 4125700; 706800, 4125400; maps Academy and Millerton Lake East, and Turner Ranch, California, land 707200, 4125400; 707900, 4126100; California, land bounded by the bounded by the following UTM 10 NAD 708300, 4126100; 708300, 4125400; following UTM 11 NAD 83 coordinates 83 coordinates (E, N): 697300, 4104500; 709100, 4125400; 709900, 4125700; (E, N): 267300, 4097300; 266900, 696100, 4104500; 695700, 4105000; 709900, 4126000; 710200, 4126200; 4097300; 267000, 4097600; 267800, 695700, 4106600; 694700, 4107900; 711500, 4126200; 711500, 4124600; 4098300; 268100, 4098700; 268100, 693500, 4107900; 693700, 4109100; 708000, 4124500; 706700, 4124500; 4098900; 268000, 4099100; 267400, 692900, 4109100; 692900, 4109800; 4099800; 267400, 4100300; 267700, 706700, 4122100; 711500, 4122200; 693100, 4110200; 693800, 4110200; 4100800; 268100, 4101400; 268600, 711500, 4121700; 712100, 4121400; 693800, 4111800; 692500, 4111800; 4101400; 269100, 4101100; 269600, 715600, 4121500; 715600, 4121100; 692400, 4110600; 691800, 4110600; 4101100; 269800, 4101300; 269900, 715300, 4121100; 714800, 4120600; 691600, 4110200; 690800, 4110300; 4101500; 269600, 4102200; 269200, 714800, 4119900; 716400, 4119900; 690000, 4110300; 690000, 4111400; 4102400; 268600, 4102800; 268700, 689700, 4111800; 689200, 4111800; 716400, 4119300; 715600, 4119300; 4103800; 269100, 4103800; 269600, 689200, 4111300; 688400, 4111300; 715600, 4118200; 718900, 4118300; 4103100; 270200, 4103500; 270300, 688400, 4112100; 686700, 4112100; 718900, 4118900; 718100, 4118900; 4103500; 270900, 4102500; 270500, 686500, 4112900; 686500, 4113700; 717700, 4119100; 717700, 4119900; 4102400; 270300, 4102200; 270300, 686000, 4113700; 686000, 4116100; 718100, 4119900; 718100, 4120800; 4101900; 270500, 4101500; 270600, 684500, 4116100; 684400, 4114200; 717000, 4120800; 717000, 4121600; 4101100; 270500, 4101000; 270200, 682200, 4114200; 682100, 4113000; 719300, 4121600; 719600, 4121700; 4100700; 269400, 4100500; 268300, 681100, 4113000; 681100, 4111800; 719600, 4123200; 718000, 4123200; 4100500; 268100, 4100300; 268100, 680600, 4111700; 679600, 4110900; 718000, 4124000; 722200, 4124000; 4100100; 268400, 4099800; 268600, 678800, 4110900; 678200, 4111800; 722200, 4123300; 721500, 4123300; 4099500; 268700, 4099200; 268700, 678300, 4113600; 677900, 4114400; 721500, 4122500; 722900, 4122500; 4098900; 268600, 4098300; 268500, 679400, 4114400; 679400, 4115200; 722900, 4121600; 722900, 4121200; 4098100; 268400, 4097800; 268100, 680000, 4115200; 680300, 4116000; 721300, 4121200; 721300, 4120300; 4097600; 267800, 4097400; returning to 681800, 4116100; 682800, 4116600; 722900, 4120300; 722900, 4118500; 267300, 4097300. 683600, 4116500; 683600, 4117100; 726100, 4118600; 726100, 4120100; (21) Subunit 18A: Kings and Tulare 681200, 4117100; 681000, 4124500; 726900, 4120400; 728500, 4120400; Counties, California. 680800, 4124900; 679800, 4124900; 728500, 4121400; 730700, 4121800; (i) From USGS 1:24,000 quadrangle 679800, 4125700; 680700, 4125700; 730900, 4122700; 731700, 4122700; maps Burris Park, Monson, Remnoy, 680600, 4126400; 680300, 4126700; 731700, 4123100; 732500, 4123100; and Traver, California, land bounded by 680300, 4127200; 678900, 4127800; 732600, 4121400; 735000, 4121100; the following UTM 11 NAD 83 679000, 4129000; 679300, 4129200; 735300, 4120300; 733400, 4120300; coordinates (E, N): 274700, 4028100; 680100, 4129400; 679700, 4130700; 733400, 4118700; 731700, 4118700; 274700, 4029800; 275600, 4029800; 679400, 4130200; 678600, 4130200; 731700, 4117000; 730400, 4117000; 276100, 4030400; 276400, 4030600; 678000, 4131200; 678500, 4132100; 730400, 4118600; 727700, 4118600; 276800, 4031400; 277500, 4031500; 678800, 4132400; 679000, 4131800; 727500, 4118400; 727500, 4116900; 278200, 4031900; 279500, 4031800; 679200, 4131800; 680200, 4132200; 726800, 4116900; 726800, 4115300; 279000, 4032900; 280500, 4032900; 680700, 4131700; 681600, 4132800; 725900, 4115300; 725900, 4116900; 281400, 4033300; 281800, 4033200; 681200, 4133100; 681200, 4133600; 724300, 4116900; 724300, 4117600; 283000, 4034300; 283800, 4034400; 681600, 4134100; 681700, 4134200; 722600, 4117500; 722600, 4117600; 284700, 4035200; 286800, 4035100; 681900, 4134200; 682300, 4134000; 721800, 4117600; 721800, 4118400; 288500, 4035100; 288500, 4035600; 682700, 4133800; 683400, 4133100; 720200, 4118400; 720200, 4117600; 287700, 4035700; 287700, 4036700; 683600, 4132600; 683600, 4132300; 719400, 4117600; 719500, 4115900; 289300, 4036700; 289400, 4037400; 683100, 4131800; 683100, 4131500; 714600, 4115800; 714600, 4115000; 291100, 4037400; 291100, 4037200; 683400, 4131500; 684300, 4130400; 712200, 4115000; 711600, 4115500; 291800, 4037200; 291900, 4036800; 684700, 4130000; 685500, 4130700; 710600, 4116000; 709600, 4116500; 291900, 4035600; 292700, 4035800; 686000, 4130700; 686200, 4130900; 707300, 4116500; 707300, 4118100; 292700, 4036500; 293500, 4036400; 686400, 4130900; 688800, 4131400; 705000, 4118100; 704500, 4119600; 293500, 4036000; 294300, 4036000; 690300, 4131400; 690500, 4130600; 699400, 4119500; 699300, 4118700; 294300, 4035600; 293500, 4035600; 691600, 4130600; 691600, 4130000; 698800, 4118700; 698500, 4118500; 293400, 4034000; 292600, 4034000; 692900, 4130000; 692800, 4131700; 698200, 4117700; 697600, 4117700; 292600, 4035400; 291900, 4035400; 692400, 4131800; 692400, 4133500; 697800, 4116500; 693700, 4116200; 291700, 4035400; 291700, 4035600; 693000, 4133000; 694400, 4133100; 694200, 4115100; 694400, 4114600; 290500, 4035700; 290500, 4036100; 694400, 4132000; 693700, 4132000; 694800, 4114600; 695000, 4115100; 289800, 4036100; 289800, 4035700; 693700, 4129800; 695200, 4129800; 695800, 4115100; 696300, 4114300; 289400, 4035700; 289400, 4034500; 695200, 4130300; 695700, 4130300; 697600, 4114200; 697900, 4113900; 288500, 4034500; 288500, 4034200; 695900, 4130000; 696100, 4129500; 697900, 4113100; 698900, 4112500; 287700, 4034200; 287700, 4034500; 696100, 4129100; 696900, 4129100; 698800, 4109800; 695700, 4109800; 287000, 4034600; 287000, 4034300;

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285000, 4034400; 285000, 4033800; (i) From USGS 1:24,000 quadrangle 298500, 4038200; 298400, 4038200; 283100, 4033800; 283100, 4033100; map Monson, California, land bounded 298400, 4038700; 298400, 4039500; 282600, 4033100; 282600, 4032600; by the following UTM 11 NAD 83 298500, 4039800; 298900, 4039900; 282200, 4032600; 282100, 4031800; coordinates (E, N): 297500, 4035500; 298900, 4041500; 300900, 4041500; 282100, 4031100; 280100, 4031100; 296700, 4035500; 296700, 4036300; 300900, 4040100; 300300, 4040100; 280100, 4030800; 279000, 4030600; 297500, 4036300; returning to 297500, 300300, 4039400; 299200, 4039400; 278700, 4030500; 278500, 4030100; 4035500. returning to 299200, 4038200. 278100, 4030000; 276400, 4030100; (23) Subunit 18C: Tulare County, 275700, 4029600; 275500, 4029200; California. (24) Map follows of all critical habitat 275300, 4028600; 275000, 4028300; (i) From USGS 1:24,000 quadrangle units for vernal pool tadpool shrimp returning to 274700, 4028100. map Ivanhoe, California, land bounded (Lepidurus packardi). (22) Subunit 18B: Tulare County, by the following UTM 11 NAD 83 BILLING CODE 4310–55–P California. coordinates (E, N): 299200, 4038200;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00119 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60002 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C Chamaesyce hooveri (Hoover’s spurge), californica (Butte County meadowfoam), 5. In § 17.96 add critical habitat for Lasthenia conjugens (Contra Costa Neostapfia colusana (Colusa grass), Castilleja campestris ssp. succulenta goldfields), Limnanthes floccosa ssp. Orcuttia inaequalis (San Joaquin Valley (succulent (or fleshy) owl’s-clover),

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00120 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.005 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60003

Orcutt grass), Orcuttia pilosa (hairy (4) Unit 1: Mendocino County, 4233300; 588700, 4233500; 589300, Orcutt grass), Orcuttia tenuis (slender California. 4233500; 589400, 4233600; 589400, Orcutt grass), Orcuttia viscida (i) From USGS 1:24,000 quadrangle 4234000; 589000, 4234400; 588500, (Sacramento Orcutt grass), Tuctoria map Point Arena, California, land 4234400; 588500, 4236400; 588400, greenei (Greene’s tuctoria), and Tuctoria bounded by the following UTM 10 NAD 4236400; 588400, 4236300; 588200, mucronata (Solano grass) under 83 coordinates (E, N): 441000, 4310900; 4236200; 588000, 4236400; 587700, paragraph (a) by adding entries for these 440700, 4310900; 440500, 4311100; 4236500; 586900, 4236500; 586900, species in alphabetical order by family 440200, 4311100; 440000, 4311300; 4237200; 587000, 4237300; 586800, under Asteraceae, Euphorbiaceae, 439500, 4311000; 438900, 4311000; 4237300; 586800, 4238100; 586100, Limnanthaceae, Poaceae, and 438500, 4311400; 438500, 4311800; 4238700; 585600, 4238700; 585600, Scrophulariaceae, (respectively) to read 438500, 4312500; 438500, 4312700; 4238800; 586100, 4239100; 586100, as follows: 438700, 4313000; 439000, 4313100; 4239200; 587800, 4239200; 588100, 439100, 4313500; 439300, 4313900; 4239600; 588300, 4239600; 588700, § 17.96 Critical habitat—plants. 439500, 4314000; 439800, 4313900; 4239800; 589200, 4240000; 589500, (a) Flowering Plants 440100, 4314000; 441000, 4314000; 4240600; 589500, 4240900; 589100, 441200, 4314200; 441300, 4314200; 4241400; 590100, 4241400; 590600, * * * * * 441600, 4313700; 441700, 4313500; 4241400; 590800, 4241600; 591100, Family Asteraceae: Lasthenia conjugens 442200, 4313400; 442500, 4313300; 4241600; 591100, 4241300; 591600, (Contra Costa Goldfields). 442900, 4312800; 443200, 4312300; 4241300; 591600, 4242600; 591700, (1) Critical habitat units are depicted 443300, 4312000; 443300, 4311800; 4242900; 592200, 4242900; 592200, for Mendocino, Napa, Solano, Contra 442500, 4311800; 442400, 4312000; 4243100; 592400, 4243200; 592700, Costa, Alameda, Santa Clara and 442200, 4312000; 441300, 4311000; 4243200; 592700, 4243600; 592900, Monterey counties, California, on the returning to 441000, 4310900. 4243600; 593200, 4243600; 593400, map below. (5) Unit 2: Napa County, California. 4242700; 593400, 4240100; 594000, (i) From USGS 1:24,000 quadrangle (2) The primary constituent elements 4240100; 594300, 4239900; 594300, maps Capell Valley and Yountville, of critical habitat for Lasthenia 4238400; 595000, 4238400; 595300, California, land bounded by the conjugens are the habitat components 4238100; 595400, 4237400; 596000, following UTM 10 NAD 83 coordinates that provide: 4236600; 596000, 4236300; 595600, (E, N): 567300, 4248100; 567200, 4235500; 595100, 4234900; 595600, (i) Vernal pools, swales, moist flats, 4248300; 567000, 4249800; 566700, and other ephemeral wetlands and 4233800; 595500, 4232900; 596100, 4250000; 566400, 4250300; 566100, 4232100; 596600, 4231900; 596600, depressions of appropriate sizes and 4250400; 566000, 4250500; 565500, depths and the adjacent upland margins 4231300; 595700, 4230600; 594500, 4250500; 565100, 4250500; 565100, 4231200; 593800, 4231200; returning to of these depressions that sustain 4250800; 565400, 4251200; 566000, Lasthenia conjugens germination, 593600, 4230500. 4251800; 566600, 4251600; 566800, (8) Subunit 5A: Solano County, growth and reproduction, including, but 4250900; 567300, 4250500; 568100, California. not limited to, vernal pools on clay soils 4250500; 568300, 4250100; 568100, (i) From USGS 1:24,000 quadrangle from a variety of soils series, rock 4250000; 568400, 4249400; 568500, map Fairfield South, California, land outcrop pools on basalt flows, and 4249300; 568300, 4249100; 567800, bounded by the following UTM 10 NAD vernal pools in saline alkaline transition 4249000; 567500, 4248900; 567400, 83 coordinates (E, N): 577900, 4229100; zones with tidal marsh habitats. All of 4248600; returning to 567300, 4248100. 577300, 4229400; 577200, 4229800; these habitats typically become (6) Unit 3: Napa County, California. 577400, 4230000; 577600, 4229800; inundated during winter rains, but are (i) From USGS 1:24,000 quadrangle 577600, 4229700; 577700, 4229600; dry during the summer and do not maps Cuttings Wharf and Napa, 578100, 4229800; 578100, 4229700; necessarily fill with water every year; California, land bounded by the returning to 577900, 4229100. and; following UTM 10 NAD 83 coordinates (9) Subunit 5B: Solano County, (ii) The associated watershed(s) and (E, N): 564800, 4232000; 564500, California. hydrologic features, including the pool 4232300; 564200, 4232600; 563800, (i) From USGS 1:24,000 quadrangle basin, swales, and surrounding uplands 4233000; 563800, 4233600; 563800, map Fairfield South, California, land (which may vary in extent depending on 4235100; 563700, 4235200; 563900, bounded by the following UTM 10 NAD pool size and depth, soil type and 4235300; 564200, 4235400; 564400, 83 coordinates (E, N): 581900, 4230400; depth, hardpan or claypan type and 4235300; 564500, 4235100; 564800, 581700, 4230400; 581700, 4231100; extent, topography, and climate) that 4235000; 564800, 4233300; returning to 581800, 4231100; 581800, 4231600; contribute to the filling and drying of 564800, 4232000. 581300, 4231600; 581300, 4232500; the vernal pool or ephemeral wetland, (7) Unit 4: Solano County, California. 581100, 4232700; 581100, 4232900; and that maintain suitable periods of (i) From USGS 1:24,000 quadrangle 581900, 4232900; 582100, 4233000; pool inundation, water quality, and soil maps Denverton, Elmira, Fairfield 582300, 4233100; 582800, 4233100; moisture for Lasthenia conjugens North, and Fairfield South, California, 583100, 4233300; 583800, 4233300; germination, growth and reproduction, land bounded by the following UTM 10 583700, 4232900; 583100, 4231900; and dispersal, but not necessarily every NAD 83 coordinates (E, N): 593600, 582700, 4231800; 582400, 4231500; year. 4230500; 589300, 4230700; 589000, 582300, 4230700; 582000, 4230700; (3) Critical habitat does not include 4231200; 589100, 4231300; 589100, returning to 581900, 4230400. existing man-made features and 4231700; 588600, 4231600; 588200, (10) Unit 6: Contra Costa County, structures, such as buildings, roads, 4231800; 587800, 4231700; 587100, California aqueducts, railroads, airport runways 4231900; 587000, 4232000; 587000, (i) From USGS 1:24,000 quadrangle and buildings, other paved areas, lawns, 4232900; 587100, 4232900; 587100, maps Benicia and Mare Island, and other urban landscaped areas not 4232800; 587300, 4232700; 587600, California, land bounded by the containing one or more of the primary 4232500; 588600, 4232500; 588600, following UTM 10 NAD 83 coordinates constituent elements. 4232800; 588400, 4233000; 588600, (E, N): 569200, 4206400; 569000,

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4206400; 567500, 4207100; 567200, 620400, 4188100; 620500, 4187900; 607700, 4048800; 607200, 4048900; 4207100; 566600, 4207700; 566400, 620600, 4187800; 620700, 4187700; 606700, 4049100; 606500, 4049200; 4207500; 565900, 4207400; 565700, 620900, 4187700; 621100, 4187500; 606400, 4049200; 606400, 4049300; 4207700; 566500, 4208600; 567000, 620500, 4187100; 620500, 4186900; 606300, 4049500; 606100, 4049800; 4208600; 567500, 4207800; 567900, 621300, 4187300; 621700, 4187100; 606000, 4049900; 605600, 4050300; 4207400; 568200, 4207200; 568500, 621800, 4186900; 621600, 4186200; 605500, 4050500; 605400, 4050800; 4207100; 568900, 4207000; 569200, 621600, 4186000; 621800, 4185900; 605400, 4051200; 605700, 4052100; 4206600; returning to 569200, 4206400. 621900, 4186100; 621800, 4186500; 606000, 4052700; 606000, 4052800; (11) Unit 7: Contra Costa County, 621900, 4186600; 622100, 4186600; 606900, 4053300; 607200, 4053200; California. 622200, 4186400; 622300, 4186200; 607900, 4053100; 608100, 4053100; (i) From USGS 1:24,000 quadrangle 622500, 4186000; 622700, 4185700; 608400, 4053000; 609100, 4053000; maps Byron Hot Springs and Clifton 622300, 4185300; 621200, 4185300; 609300, 4053200; 609500, 4053500; Court Forebay, California, land bounded 621200, 4185700; 621300, 4186000; 609600, 4053700; 609700, 4053900; by the following UTM 10 NAD 83 621100, 4186100; 620500, 4185900; 609700, 4054100; 609800, 4054300; coordinates (E, N): 620500, 4185200; 620600, 4185400; returning to 620500, 609900, 4054600; 609900, 4054900; 620200, 4185300; 620200, 4185500; 4185200. 610200, 4055500; 610200, 4056300; 620000, 4185900; 620000, 4186100; (12) Unit 8: Alameda County, 610400, 4056500; 610600, 4056600; 620500, 4186100; 620700, 4186200; California. 610700, 4056700; 610900, 4056800; 620700, 4186600; 620200, 4186800; (i) From USGS 1:24,000 quadrangle 611100, 4056700; 611200, 4056700; 620100, 4186900; 620000, 4186800; maps Milpitas and Niles, California, 612200, 4056600; 612700, 4056600; 619900, 4186600; 619900, 4186400; land bounded by the following UTM 10 612800, 4056700; 612900, 4056600; 619800, 4186300; 619600, 4186400; NAD 83 coordinates (E, N): 591200, 613000, 4056600; 613100, 4056500; 619500, 4186300; 619600, 4186100; 4148600; 590700, 4148600; 590300, 613100, 4056400; 613200, 4056200; 619600, 4185700; 619400, 4185700; 4149100; 589300, 4150400; 589700, 613100, 4056000; 613100, 4055500; 618200, 4186600; 618100, 4187100; 4150600; 590500, 4150200; 590600, 613000, 4055200; 613000, 4055000; 617700, 4187400; 617800, 4187900; 4150400; 590400, 4150500; 590500, 612900, 4054900; 612600, 4054300; 618400, 4187900; 618400, 4187500; 4150600; 590700, 4150500; 590900, 619000, 4186900; 619400, 4186700; 612300, 4053700; 612300, 4052900; 4150700; 590400, 4151200; 591100, 612200, 4052800; 612100, 4052500; 619500, 4186900; 619500, 4189200; 4151600; 591300, 4151600; 591400, 619300, 4189400; 619400, 4189600; 612100, 4052200; 612200, 4052000; 4151500; 591400, 4151400; 591300, 612300, 4051700; 612200, 4051500; 619000, 4189700; 618700, 4189400; 4151100; 591500, 4150900; 591600, 612000, 4051300; 611900, 4051100; 618500, 4189000; 617800, 4188900; 4150700; 591800, 4150700; 592000, 611700, 4050800; 611600, 4050100; 617700, 4188800; 617400, 4189000; 4150900; 592300, 4150600; 592300, 611300, 4050000; 611200, 4049900; 617400, 4189200; 618200, 4189500; 4150400; 592200, 4150000; 592100, 611000, 4049700; 610800, 4049600; 618100, 4189800; 618200, 4190100; 4149600; 592000, 4149500; 591600, 610500, 4049700; 610000, 4049700; 618700, 4190300; 618700, 4190700; 4149500; 591600, 4148800; returning to 609900, 4049600; 609900, 4049400; 619000, 4191000; 619300, 4191100; 591200, 4148600. 609800, 4049300; 608600, 4049000; 619600, 4191100; 619800, 4190700; (13) Unit 9: Monterey County, 608400, 4049000; 608200, 4048900; 619900, 4190700; 620100, 4190900; California. 620400, 4190900; 620500, 4191300; (i) From USGS 1:24,000 quadrangle returning to 608100, 4048800. 621800, 4191300; 622200, 4190700; maps Marina, Salinas, Seaside, and (14) Map follows of all critical habitat 622300, 4190400; 621200, 4190400; Spreckels, California, land bounded by units for Lasthenia conjugens (Contra 621200, 4188700; 620900, 4188700; the following UTM 10 NAD 83 Costa goldfields). 620600, 4188400; 620400, 4188600; coordinates (E, N): 608100, 4048800; BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00122 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60005

BILLING CODE 4310–55–C (1) Critical habitat units are depicted Tuolumne counties, California, on the * * * * * for Tehama, Butte, Glenn, Colusa, map below. Family Euphorbiaceae: Chamaesyce Stanislaus, Merced, Tulare and (2) The primary constituent elements hooveri (Hoover’s Spurge). of critical habitat for Chamaesyce

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00123 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.006 60006 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

hooveri are the habitat components that 587200, 4414000; 586400, 4413800; 4170400; 709100, 4170500; 709200, provide: 586200, 4413600; 586200, 4413400; 4170600; 709400, 4170600; 709400, (i) Vernal pools, swales, and other 584200, 4413400; returning to 583100, 4170800; 709300, 4170800; 709200, ephemeral wetlands and depressions of 4413100. 4170900; 709100, 4170800; 708800, appropriate sizes and depths and the (5) Unit 2: Butte County, California. 4170700; 708800, 4170600; 708500, adjacent upland margins of these (i) From USGS 1:24,000 quadrangle 4170500; 708400, 4170300; 708100, depressions that sustain Chamaesyce map Hamlin Canyon, California, land 4170200; 707900, 4170200; 707900, hooveri germination, growth and bounded by the following UTM 10 NAD 4170300; 708100, 4170500; 708200, reproduction, including but not limited 83 coordinates (E, N): 611100, 4387700; 4170500; 708200, 4170600; 708000, to vernal pools formed on neutral to 610400, 4388500; 610300, 4388800; 4170600; 708200, 4170800; 708200, saline-alkaline soils over lime-silica 609200, 4389800; 609100, 4390100; 4170900; 708100, 4170900; 707900, cemented hardpan or claypan, or on 610200, 4391100; 610300, 4391400; 4170700; 707700, 4170700; 707700, acidic soils over iron-silica cemented 611100, 4391400; 611500, 4391300; 4170800; 707600, 4170900; 707400, hardpan, that typically become 612500, 4390200; 613300, 4389600; 4170900; 707100, 4171100; 707100, inundated during winter rains, but are 613300, 4388900; 613200, 4388400; 4171200; 707200, 4171300; 707300, dry during the summer and do not 612800, 4388000; 612100, 4387900; 4171200; 707500, 4171300; 707800, 611500, 4387900; returning to 611100, necessarily fill with water every year; 4171600; 707900, 4171600; 708100, 4387700. and 4171600; 708200, 4171700; 708100, (ii) The associated watershed(s) and (6) Unit 3: Glenn and Colusa counties, 4171800; 708100, 4171900; 708300, hydrologic features, including the pool California. 4171900; 708300, 4172100; 708400, basin, swales, and surrounding uplands (i). From USGS 1:24,000 quadrangle 4172100; 708500, 4172200; 708500, (which may vary in extent depending on maps Logandale, Maxwell, Moulton pool size and depth, soil type and Weir, and Princeton, California, land 4172300; 708700, 4172400; 708800, depth, hardpan or claypan type and bounded by the following UTM 10 NAD 4172500; 708800, 4172600; 708700, extent, topography, and climate) that 83 coordinates (E, N): 572900, 4357400; 4172700; 708500, 4172700; 708400, contribute to the filling and drying of 571200, 4357400; 571200, 4358200; 4172800; 708300, 4172700; 708200, the vernal pool or ephemeral wetland, 570400, 4358200; 570400, 4359000; 4172700; 708100, 4172600; 708000, and that maintain suitable periods of 569600, 4359000; 569500, 4360500; 4172500; 707900, 4172500; 707800, pool inundation, water quality, and soil 569300, 4362200; 569500, 4363300; 4172700; 707600, 4172600; 707400, moisture for Chamaesyce hooveri 569500, 4367200; 570000, 4367200; 4172500; 707400, 4172600; 707200, germination, growth and reproduction, 569900, 4368400; 570300, 4368400; 4172700; 707100, 4172300; 707000, and dispersal, but not necessarily every 571000, 4367600; 571000, 4367800; 4172200; 706700, 4172200; 706700, year. 570700, 4368500; 570900, 4368800; 4172300; 706500, 4172300; 706400, (3) Critical habitat does not include 571500, 4368800; 571900, 4368300; 4172300; 706400, 4172400; 706200, existing man-made features and 571900, 4367600; 572100, 4367600; 4172600; 706300, 4172700; 706400, structures, such as buildings, roads, 572400, 4368100; 572400, 4368400; 4172800; 706300, 4172800; 706200, aqueduct, railroads, airport runways 572600, 4368900; 572800, 4368900; 4172800; 706100, 4172900; 705900, and buildings, other paved areas, lawns, 573000, 4368100; 573400, 4368000; 4173100; 705800, 4173300; 705800, and other urban landscaped areas not 573800, 4367600; 574100, 4367300; 4173500; 706000, 4173800; 705900, containing one or more of the primary 574400, 4367200; 574500, 4366400; 4173900; 705800, 4174100; 705700, constituent elements. 574900, 4366400; 574900, 4365600; 4174200; 705500, 4174200; 705400, (4) Unit 1: Tehama and Butte 574700, 4365500; 574400, 4364100; 4174100; 705400, 4173700; 705300, counties, California. 575200, 4363900; 575600, 4363600; 4173500; 705200, 4173200; 705100, (i) From USGS 1:24,000 quadrangle 575100, 4362400; 575600, 4361400; 4174700; 705400, 4175400; 705000, maps Acorn Hollow, Foster Island, Los 575100, 4360700; 576000, 4359600; 4175900; 705300, 4176300; 705700, Molinos, Nord, Richardson Springs NW, 575500, 4358900; 575700, 4358300; 4176700; 705700, 4177000; 705700, and Vina, California, land bounded by 575900, 4357700; 575300, 4357800; 4177700; 705200, 4177900; 705000, the following UTM 10 NAD 83 575000, 4357700; 574700, 4357700; 4178100; 705400, 4178900; 706200, coordinates (E, N): 583100, 4413100; 573600, 4357800; 573500, 4358200; 4178400; 706600, 4177600; 707200, 582900, 4413400; 582900, 4415900; 572900, 4358200; returning to 572900, 4177300; 707300, 4176800; 706800, 582000, 4418300; 581800, 4419200; 4357400. 4176200; 706900, 4175800; 707600, 582000, 4419500; 581400, 4420000; (7) Unit 4: Stanislaus and Tuolumne 4175800; 708000, 4176500; 708500, 581400, 4420400; 581800, 4420700; Counties, California. 4176400; 709800, 4176600; 710200, 581600, 4421000; 583200, 4422600; (i) From USGS 1:24,000 quadrangle 4176200; 710700, 4176600; 711200, 583500, 4423600; 585200, 4424500; maps Cooperstown, Keystone, Knights 4176900; 711500, 4177100; 711600, 584900, 4424900; 582900, 4424300; Ferry, La Grange, and Paulsell, 4178100; 711700, 4178700; 710600, 581300, 4422800; 581000, 4422600; California, land bounded by the 4178800; 710300, 4179200; 709900, 580500, 4422800; 579800, 4424400; following UTM 10 NAD 83 coordinates 4179500; 709500, 4179600; 709100, 579500, 4425400; 580300, 4426100; (E, N): 718900, 4168000; 718700, 4180800; 709200, 4182200; 709700, 581700, 4427000; 583400, 4427100; 4168000; 717900, 4168500; 715500, 4182700; 710300, 4182900; 711400, 584000, 4427200; 585000, 4428300; 4168200; 715400, 4168300; 712500, 4182100; 712400, 4182100; 713200, 586700, 4429000; 588800, 4430200; 4168900; 710900, 4168400; 4182000; 714100, 4182600; 714700, 589500, 4429500; 589500, 4428600; 710350.6875000 4168525; 710500, 4182000; 715200, 4181600; 715600, 589500, 4428000; 589800, 4427100; 4169100; 709300, 4169100; 709100, 4180900; 715400, 4180400; 716600, 590500, 4426400; 590500, 4425300; 4169500; 709100, 4169700; 708900, 4180400; 716900, 4179900; 717700, 591200, 4424400; 591500, 4423300; 4169700; 708800, 4169900; 708700, 4180100; 718500, 4180000; 718700, 591600, 4422100; 590900, 4420900; 4169900; 708600, 4169800; 708500, 4179200; 719300, 4178700; 719700, 590700, 4419800; 588000, 4417000; 4169900; 708400, 4170000; 708700, 4177600; 720300, 4177700; 720700, 587500, 4416400; 587200, 4415500; 4170200; 708800, 4170300; 708900, 4177700; 720800, 4176400; 721400,

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4175900; 722200, 4175300; 722700, 716500, 4163100; 716600, 4163200; 4118700 on the San Joaquin River; 4175200; 722800, 4173600; 723000, 716600, 4163500; 716500, 4163600; thence northeast along the San Joaquin 4173500; 723200, 4173600; 723700, 716500, 4163800; 716600, 4164100; River to x-coordinate 693100; thence 4173600; 724000, 4173300; 724100, 716800, 4164500; 716700, 4164900; north to 693100, 4125600; 693700, 4172300; 722800, 4172200; 721700, 716800, 4165300; 717200, 4165800; 4127500; 694500, 4127000; 694800, 4171200; 721400, 4169900; 720500, 717200, 4166100; 717000, 4166400; 4127000; 695200, 4127700; 695200, 4168700; returning to 718900, 4168000. 716600, 4166400; 716400, 4166300; 4129800; 695200, 4130300; 695700, (8) Unit 5: Stanislaus and Merced 716400, 4167000; 716600, 4167200; 4130300; 695900, 4130000; 696100, counties, California. 716600, 4167300; 717000, 4167400; 4129500; 696100, 4129100; 696900, (i) From USGS 1:24,000 quadrangle 717500, 4167400; 718100, 4167300; 4129100; 696900, 4130200; 697200, maps Cooperstown, La Grange, Merced 718500, 4167100; 718600, 4166600; 4130200; 698300, 4128600; 698600, Falls, Montpelier, Paulsell, Snelling, 718700, 4166400; 719100, 4166700; 4128200; 700100, 4127600; 700500, and Turlock Lake, California, land 719300, 4166800; 719800, 4166800; 4129200; 700500, 4130600; 701700, bounded by the following UTM 10 NAD 719500, 4167400; 719500, 4167600; 4130600; 701800, 4129200; 703300, 83 coordinates (E, N): 715900, 4154900; 719700, 4167800; 720500, 4167800; 4129200; 703300, 4128800; 703900, 715400, 4155600; 715300, 4156600; 720700, 4167700; 720900, 4167500; 4128800; 703900, 4129000; 704200, 715100, 4156600; 715000, 4156200; 721100, 4167400; 721300, 4167700; 4129000; 705600, 4128500; 705600, 714800, 4156100; 714800, 4155800; 721700, 4167700; 722000, 4167600; 4127800; 705300, 4127000; 705400, 714700, 4155600; 714200, 4155600; 722500, 4167600; 723200, 4167100; 4126200; 705900, 4125700; 706800, 714000, 4155400; 713800, 4155400; 723500, 4166300; 723000, 4166100; 4125400; 707200, 4125400; 707900, 712600, 4155200; 712600, 4157100; 723200, 4165600; 723400, 4165700; 4126100; 708300, 4126100; 708300, 711200, 4157100; 711100, 4161900; 723600, 4165600; 723600, 4165100; 4125400; 709100, 4125400; 709900, 706300, 4161800; 706100, 4165000; 723700, 4164900; 724300, 4164900; 4125700; 709900, 4126000; 710200, 703000, 4165100; 702500, 4165200; 725000, 4163700; 725300, 4163800; 4126200; 711500, 4126200; 711500, 702500, 4165900; 702600, 4166600; 724900, 4162800; 725100, 4162700; 4124600; 708000, 4124500; 706700, 703700, 4167200; 704600, 4168200; 725400, 4162700; 726000, 4164100; 4124500; 706700, 4122100; 711500, 704900, 4168200; 705300, 4167800; 726300, 4163500; 726200, 4163100; 4122200; 711500, 4121700; 712100, 705900, 4167800; 707000, 4167500; 726000, 4163000; 726100, 4162700; 4121400; 713200, 4121400; 713200, 707700, 4167600; 708100, 4167300; 726200, 4160600; 725800, 4160600; 4118700; 711600, 4118700; returning to 709400, 4167300; 709600, 4167300; 725000, 4160200; 725300, 4159800; 711600, 4118100. 710200, 4166800; 711000, 4167600; 726300, 4160200; 727000, 4159500; (10) Subunit 7A: Tulare County, 711600, 4167800; 712600, 4167800; 727000, 4160400; 727300, 4160700; California. 713200, 4167600; 713200, 4167200; 727500, 4159800; 727600, 4159800; (i) From USGS 1:24,000 quadrangle 712900, 4167200; 712600, 4166900; 727800, 4160400; 728300, 4160400; maps Ivanhoe, Monson, and Stokes 711800, 4167000; 711600, 4166800; 729000, 4160800; 730400, 4160100; Mtn., California, land bounded by the 711600, 4166600; 711800, 4166500; 730300, 4160500; 730600, 4160600; 711800, 4166600; 711900, 4166600; 731500, 4161400; 731900, 4161400; following UTM 11 NAD 83 coordinates 712000, 4166300; 712100, 4166500; 732000, 4160800; 731700, 4160700; (E, N): 302400, 4036900; 300700, 712200, 4166500; 712300, 4166400; 732000, 4160000; 733500, 4159000; 4037000; 298500, 4038200; 297600, 712500, 4166400; 712500, 4166200; 733700, 4158700; 733300, 4158600; 4038200; 297600, 4039500; 298400, 712700, 4166200; 712700, 4166300; 733300, 4158300; 733800, 4157700; 4039500; 298500, 4039800; 298900, 712800, 4166300; 713000, 4166100; 733400, 4157100; 731700, 4156900; 4039900; 298900, 4041200; 299400, 712800, 4166000; 712700, 4165800; 730900, 4156500; 728900, 4156600; 4041300; 298900, 4042000; 298900, 712500, 4165800; 712500, 4165600; 727100, 4156700; 726900, 4156400; 4042500; 298900, 4043300; 299500, 712700, 4165600; 712600, 4165400; 725900, 4156400; 723900, 4155300; 4043800; 299600, 4044300; 299700, 712400, 4165500; 712300, 4165400; 723300, 4155400; 722500, 4155000; 4044700; 300100, 4045300; 300700, 712500, 4165300; 712500, 4165200; 722300, 4155000; 722300, 4157400; 4045400; 301200, 4045800; 302200, 712400, 4165100; 712600, 4165100; 723800, 4157500; 723700, 4159000; 4045800; 302200, 4045600; 302500, 712600, 4165000; 712600, 4164900; 722500, 4159000; 722200, 4159300; 4045600; 303000, 4045900; 303100, 712700, 4164800; 712600, 4164700; 720900, 4159300; 720900, 4158500; 4045900; 303300, 4045700; 303600, 712500, 4164800; 712400, 4164800; 719700, 4158500; 719700, 4158100; 4045700; 303800, 4046100; 304300, 712400, 4164300; 712800, 4164500; 719100, 4158000; 718700, 4157600; 4046100; 304500, 4046300; 304700, 713100, 4164300; 713200, 4164100; 718000, 4157700; 717800, 4157400; 4046300; 304900, 4046800; 304700, 712900, 4163800; 712900, 4163700; 717900, 4157200; 718000, 4157000; 4047700; 304800, 4047900; 304700, 713100, 4163800; 713500, 4164000; 718400, 4157300; 718700, 4156700; 4048300; 304800, 4048500; 305400, 713600, 4164000; 713600, 4164100; 718700, 4156300; 717400, 4156300; 4048500; 305800, 4048000; 306000, 713700, 4164300; 714200, 4164300; 717000, 4155800; 716600, 4155800; 4047900; 306300, 4047900; 306500, 714400, 4164500; 714500, 4164800; 716300, 4155700; 716200, 4155000; 4047600; 306500, 4047000; 306300, 714600, 4164800; 714800, 4164700; returning to 715900, 4154900. 4046900; 306100, 4045900; 305900, 714800, 4164200; 714400, 4164000; (9) Unit 6: Merced County, California. 4045300; 305600, 4045100; 305400, 714400, 4163600; 714500, 4163500; (i) From USGS 1:24,000 quadrangle 4044300; 305400, 4044100; 305900, 715200, 4164000; 715300, 4164200; maps Arena, Atwater, San Luis Ranch, 4043900; 305700, 4043400; 305700, 715400, 4164200; 715300, 4163900; Sandy Mush, Stevinson, and Turner 4042400; 305000, 4042400; 304900, 715100, 4163700; 715000, 4163500; Ranch, California, land bounded by the 4042000; 304200, 4042000; 304100, 714800, 4163300; 714900, 4163200; following UTM 10 NAD 83 coordinates 4041600; 301400, 4041700; 300900, 715000, 4163200; 715700, 4163200; (E, N): 711600, 4118100; 707300, 4041500; 300900, 4040100; 300300, 715900, 4163100; 716000, 4162900; 4118100; 705000, 4118100; 704500, 4040100; 300300, 4039400; 301200, 716100, 4162800; 716200, 4162800; 4119600; 699400, 4119500; 699300, 4039400; 302500, 4037900; returning to 716300, 4162900; 716400, 4163000; 4118700; thence west to y-coordinate 302400, 4036900.

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(11) Subunit 7B: Tulare County, 313300, 4039400; 313500, 4039000; land bounded by the following UTM 11 California. 313100, 4038600; 313700, 4038600; NAD 83 coordinates (E, N): 293800, (i) From USGS 1:24,000 quadrangle 313900, 4038500; 314100, 4038000; 4034000; 292500, 4034000; 292600, maps Auckland, Ivanhoe, Stokes Mtn., 314600, 4038000; 314800, 4037500; 4035400; 291700, 4035400; 291700, and Woodlake, California, land bounded 314800, 4037200; 314000, 4036600; 4035600; 290500, 4035700; 290500, by the following UTM 11 NAD 83 314100, 4036400; 314900, 4036400; 4036100; 289800, 4036100; 289800, coordinates (E, N): 308300, 4033500; 315100, 4036600; 315500, 4036600; 4035700; 289400, 4035700; 289400, 316100, 4036400; 316400, 4035400; 307800, 4033500; 306600, 4034100; 4034500; 288500, 4034500; 288500, 316400, 4035200; 315900, 4034500; 305900, 4035100; 305700, 4036700; 4034200; 287700, 4034200; 287700, 314100, 4034600; 313400, 4034900; 305300, 4038400; 305000, 4038600; 4034500; 287000, 4034600; 287000, 311100, 4035100; 310700, 4034800; 305000, 4039200; 305300, 4039300; 4035100; 288500, 4035100; 288500, 310500, 4034800; 310200, 4035000; 305600, 4039300; 306000, 4038600; 310200, 4036600; 309800, 4036700; 4035600; 287700, 4035700; 287700, 306500, 4038600; 306900, 4039000; 308500, 4036700; 308400, 4035800; 4036700; 289300, 4036700; 289400, 306800, 4039900; 308100, 4040200; 309100, 4035400; 309100, 4034200; 4037400; 291100, 4037400; 291100, 308500, 4040700; 308200, 4041500; returning to 308300, 4033500. 4037200; 291800, 4037200; 291900, 307600, 4041500; 307100, 4042000; (12) Subunit 7C: Tulare County, 4036800; 292700, 4036800; 292700, 307100, 4042600; 307700, 4043700; California. 4037600; 291900, 4037700; 292000, 307800, 4044500; 308200, 4044700; (i) From USGS 1:24,000 quadrangle 4039700; 292500, 4039700; 292500, 309000, 4043900; 309600, 4043400; map Monson, California, land bounded 4039400; 292800, 4039400; 292800, 311700, 4043400; 312100, 4043000; by the following UTM 11 NAD 83 4038500; 294400, 4038500; 294300, 312700, 4043000; 313000, 4042700; coordinates (E, N): 297500, 4035200; 4035500; 293500, 4035500; 293500, 313000, 4042300; 312500, 4042000; 296800, 4035300; 296200, 4035300; 4034800; 293800, 4034800; returning to 311000, 4041000; 311000, 4040400; 296700, 4036800; 297700, 4036700; 293800, 4034000. 311200, 4040000; 311700, 4040000; returning to 297500, 4035200. 312100, 4040700; 312700, 4041000; (13) Subunit 7D: Tulare County, (14) Map follows of all critical habitat 313000, 4041000; 313600, 4040500; California. units for Chamaesyce hooveri (Hoover’s 313700, 4040300; 313100, 4039600; (i) From USGS 1:24,000 quadrangle spurge). 312700, 4039600; 312700, 4039400; maps Monson and Traver, California, BILLING CODE 4310–55–P

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BILLING CODE 4310–55–C (1) Critical habitat units are depicted (2) The primary constituent elements Family Limnanthaceae: Limnanthes for Tehama and Butte counties, of critical habitat for Limnanthes floccosa ssp. californica (Butte County California, on the map below. floccosa ssp. californica are the habitat Meadowfoam). components that provide:

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00127 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.007 60010 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

(i) Vernal pools, swales, and other 594200, 4412800; 594100, 4412500; 4404200; 605200, 4404200; 605600, ephemeral wetlands and depressions of 593800, 4412500; 593800, 4412700; 4404000; 605600, 4403600; 605100, appropriate sizes and depths and the 593600, 4412900; 593300, 4413100; 4403300; 604700, 4403400; 604500, adjacent upland margins of these 593200, 4412400; 593000, 4412200; 4403300; 604400, 4402800; 603600, depressions that sustain Limnanthes 592600, 4412200; 592400, 4412600; 4402100; 602900, 4402100; returning to floccosa ssp. californica germination, 591700, 4412600; 590900, 4411000; 602400, 4401600. growth and reproduction, including but 590700, 4411000; 590000, 4411600; (6) Unit 3: Butte County, California. not limited to vernal pool swales and 589700, 4411800; 589000, 4411900; the margins of vernal pools on the 587900, 4412000; 587900, 4412400; (i) From USGS 1:24,000 quadrangle Tuscan, Redbluff, Riverbank, and 587600, 4412700; 587600, 4413400; maps Chico, Hamlin Canyon, Paradise Modesto geologic formations underlain 587800, 4414300; 588000, 4414500; West, and Richardons Springs, by Tuscan-Anita and Igo-Redding 589100, 4414900; 590800, 4416100; California, land bounded by the complex soils among others. These 592400, 4416700; 595800, 4416600; following UTM 10 NAD 83 coordinates habitats typically become inundated 596100, 4416600; 596400, 4416800; (E, N): 604100, 4396300; 603900, during winter rains, but are dry during 596600, 4416800; 597100, 4416400; 4396300; 603900, 4396700; 603600, the summer and do not necessarily fill 597100, 4415600; 596800, 4415200; 4396800; 603600, 4398000; 602900, with water every year; and 597100, 4415000; 597800, 4415500; 4398200; 603000, 4398800; 603100, (ii) The associated watershed(s) and 598100, 4415200; 597600, 4414600; 4399000; 602600, 4399400; 602600, hydrologic features, including the pool 597600, 4414400; 597300, 4413800; 4399600; 603500, 4399800; 604700, basin, swales, and surrounding uplands 597300, 4413300; 598200, 4413900; 4400200; 604200, 4401300; 605300, (which may vary in extent depending on 598400, 4413900; 598400, 4413600; 4401900; 605900, 4402000; 606400, pool size and depth, soil type and 597400, 4411900; 597600, 4411900; 4401800; 607100, 4401400; 607600, depth, hardpan or claypan type and 598300, 4412700; 598500, 4413300; 4401300; 607800, 4401100; 607500, extent, topography, and climate) that 598900, 4413300; 598900, 4411800; 4400800; 606900, 4400800; 605100, contribute to the filling and drying of 599400, 4411700; 599800, 4411700; 4399800; 605100, 4399600; 606500, the vernal pool or ephemeral wetland, 599800, 4411000; 597700, 4409400; 4399500; 607200, 4399100; 607400, and that maintain suitable periods of 596200, 4408600; 595900, 4408800; 4399100; 607700, 4398100; 607700, pool inundation, water quality, and soil 595700, 4408800; returning to 595500, 4397800; 606900, 4397100; 606700, moisture for Limnanthes floccosa ssp. 4408200. 4397100; 605700, 4396400; 605100, californica germination, growth and (5) Unit 2: Butte County, California. 4396400; 604700, 4396600; 604500, reproduction, and dispersal, but not (i) From USGS 1:24,000 quadrangle 4396600; 604100, returning to 604100, necessarily every year. maps Nord and Richardson Springs, 4396300. (3) Critical habitat does not include California, land bounded by the (7) Unit 4: Butte County, California. existing man-made features and following UTM 10 NAD 83 coordinates (i) From USGS 1:24,000 quadrangle structures, such as buildings, roads, (E, N): 602400, 4401600; 601900, aqueducts, railroads, airport runways 4401800; 601800, 4402000; 601500, maps Oroville and Shippee, California, and buildings, other paved areas, lawns, 4401900; 601000, 4401900; 600400, land bounded by the following UTM 10 and other urban landscaped areas not 4402100; 599600, 4402100; 599400, NAD 83 coordinates (E, N): 616900, containing one or more of the primary 4403400; 599100, 4403200; 598300, 4375800; 616600, 4375800; 615900, constituent elements. 4403400; 597100, 4403700; 596400, 4375800; 615900, 4377000; 616300, (4) Unit 1: Tehama and Butte 4404200; 596300, 4404800; 595100, 4377000; 616300, 4378100; 614500, counties, California. 4405000; 595100, 4405600; 595400, 4378100; 614500, 4378900; 612600, (i) From USGS 1:24,000 quadrangle 4406000; 595400, 4407100; 595500, 4378900; 612200, 4380400; 612200, maps Campbell Mound, Nord, 4407100; 595700, 4407300; 595700, 4382600; 612500, 4383300; 613600, Richardson Springs, and Richardson 4407400; 596100, 4407400; 596400, 4384200; 614200, 4384800; 616400, Springs NW, California, land bounded 4408000; 596400, 4408100; 596800, 4384800; 618200, 4384800; 618600, by the following UTM 10 NAD 83 4408300; 596800, 4407500; 597300, 4384500; 618500, 4382500; 619300, coordinates (E, N): 595500, 4408200; 4407500; 597300, 4408000; 597900, 4381300; 619500, 4381000; 619500, 594300, 4408200; 594100, 4408300; 4407500; 598700, 4408400; 599900, 4380500; 620800, 4378900; 620900, 594000, 4408400; 593600, 4408500; 4409000; 600100, 4409000; 600300, 4378400; 620300, 4377700; 618800, 593400, 4408200; 592800, 4408200; 4408800; 600300, 4408400; 600000, 4377000; 617800, 4376400; 617100, 592800, 4408800; 592900, 4409200; 4408100; 600400, 4407600; 599500, 4376200; 616900, 4376000; returning to 592900, 4409600; 593100, 4409900; 4406700; 599500, 4406200; 600300, 616900, 4375800. 592800, 4409900; 592500, 4409800; 4406000; 601200, 4405600; 601800, (8) Map follows of all critical habitat 592500, 4410800; 592700, 4411200; 4405600; 602000, 4405500; 602200, units for Limnanthes floccosa ssp. 593300, 4411400; 594000, 4411600; 4405200; 602500, 4405200; 602700, californica (Butte County meadowfoam). 594600, 4412400; 594400, 4412800; 4404900; 603300, 4404700; 604500, BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00128 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60011

BILLING CODE 4310–55–C colusana are the habitat components inundated during winter rains, Family Poaceae: Neostapfia colusana that provide: including but not limited to vernal (Colusa Grass) (i) Vernal pools, swales, and other pools formed on the rim of alkaline (1) Critical habitat units are depicted ephemeral wetlands and depressions of basins in the Sacramento and San for Yolo, Solano, Stanislaus, Merced, appropriate sizes and depths and the Joaquin valleys, as well as on acidic Mariposa, Tuolumne and Calaveras adjacent upland margins of these soils of alluvial fans and stream terraces counties, California, on the map below. depressions that sustain Neostapfia along the eastern margin of the San (2) The primary constituent elements colusana germination, growth and Joaquin Valley and into the adjacent of critical habitat for Neostapfia reproduction, and that typically become foothills. All of these pool types are dry

VerDate Sep<04>2002 18:23 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00129 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.008 60012 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

during the summer and do not Oakdale, California, land bounded by 704800, 4188500; 704300, 4188900; necessarily fill with water every year; the following UTM 10 NAD 83 703800, 4188500; 703600, 4188500; and coordinates (E, N): 697300, 4184800; 703400, 4189100; 702300, 4189000; (ii) The associated watershed(s) and 697100, 4185000; 696900, 4185400; 700700, 4188500; 700100, 4188500; hydrologic features, including the pool 696500, 4185700; 696900, 4186000; 700000, 4188800; 699600, 4188300; basin, swales, and surrounding uplands 696900, 4186300; 696400, 4186300; 699800, 4188200; 700100, 4187600; (which may vary in extent depending on 696000, 4185900; 695400, 4185900; 699900, 4186200; 698400, 4185200; pool size and depth, soil type and 695100, 4185400; 694600, 4185500; returning to 697300, 4184800. depth, hardpan or claypan type and 694400, 4185800; 693500, 4185800; (7) Unit 4: Stanislaus and Tuolumne extent, topography, and climate) that 693300, 4185600; 693100, 4185500; counties, California. contribute to the filling and drying of 693000, 4185100; 692500, 4185100; (i) From USGS 1:24,000 quadrangle the vernal pool or ephemeral wetland, 692400, 4185400; 692000, 4185400; maps Cooperstown, Keystone, Knights and that maintain suitable periods of 691700, 4186300; 691300, 4186400; Ferry, La Grange, Oakdale, Paulsell, and pool inundation, water quality, and soil 691100, 4187200; 690700, 4187000; Waterford, California, land bounded by moisture for Neostapfia colusana 690200, 4187000; 689900, 4187600; the following UTM 10 NAD 83 germination, growth and reproduction, 689500, 4187600; 688800, 4187200; coordinates (E, N): 718900, 4168000; 718700, 4168000; 717900, 4168500; and dispersal, but not necessarily every 688600, 4186800; 688300, 4186800; 715500, 4168200; 715400, 4168300; year. 688300, 4187500; 688700, 4187800; (3) Critical habitat does not include 712500, 4168900; 710900, 4168400; 688700, 4188400; 689100, 4188900; existing man-made features and 710300, 4168500; 710500, 4169100; 689700, 4188900; 689900, 4189100; structures, such as buildings, roads, 709300, 4169100; 709100, 4169500; 689900, 4189400; 691100, 4189500; aqueducts, railroads, airport runways 709100, 4169700; 708900, 4169700; 691100, 4189900; 690900, 4190000; and buildings, other paved areas, lawns, 708800, 4169900; 708700, 4169900; 690600, 4190600; 690800, 4191100; and other urban landscaped areas not 708600, 4169800; 708500, 4169900; 691300, 4190700; 691600, 4190800; containing one or more of the primary 708400, 4170000; 708700, 4170200; 691500, 4191100; 691700, 4191100; constituent elements. 708800, 4170300; 708900, 4170400; (4) Unit 1: Yolo County, California. 691700, 4191700; 693100, 4191900; 709100, 4170500; 709200, 4170600; (i) From USGS 1:24,000 quadrangle 693600, 4192400; 693800, 4193200; 709400, 4170600; 709400, 4170800; maps Davis and Saxon, California, land 694000, 4193300; 694800, 4192800; 709300, 4170800; 709200, 4170900; bounded by the following UTM 10 NAD 695800, 4192200; 696000, 4191500; 709100, 4170800; 708800, 4170700; 83 coordinates (E, N): 615400, 4260700; 696300, 4191500; 696300, 4192500; 708800, 4170600; 708500, 4170500; 614500, 4260700; 614500, 4261500; 694800, 4193600; 694400, 4193700; 708400, 4170300; 708100, 4170200; 614200, 4261500; 614200, 4261800; 694000, 4193700; 693000, 4194400; 707900, 4170200; 707900, 4170300; 614000, 4261800; 614000, 4262400; 691900, 4194800; 691900, 4195600; 708100, 4170500; 708200, 4170500; 615400, 4262400; returning to 615400, 691300, 4195600; 690400, 4196400; 708200, 4170600; 708000, 4170600; 4260700. 689500, 4196400; 689500, 4197000; 708200, 4170800; 708200, 4170900; (5) Unit 2: Solano County, California. 689100, 4197000; 688900, 4196200; 708100, 4170900; 707900, 4170700; (i) From USGS 1:24,000 quadrangle 686900, 4196200; 687000, 4196400; 707700, 4170700; 707700, 4170800; maps Birds Landing, Denverton, Dozier, 687200, 4197000; 687900, 4197100; 707600, 4170900; 707400, 4170900; and Elmira, California, land bounded by 687900, 4198500; 688200, 4198800; 707100, 4171100; 707100, 4171200; the following UTM 10 NAD 83 688400, 4198800; 688500, 4199300; 707200, 4171300; 707300, 4171200; coordinates (E, N): 600700, 4230600; 688500, 4200000; 688000, 4200200; 707500, 4171300; 707800, 4171600; 600400, 4230900; 600400, 4231700; 688100, 4201700; 686600, 4201800; 707900, 4171600; 708100, 4171600; 601100, 4232300; 601200, 4233200; 686300, 4202600; 686300, 4202900; 708200, 4171700; 708100, 4171800; 598400, 4233200; 598200, 4232100; 686500, 4203100; 687700, 4203800; 708100, 4171900; 708300, 4171900; 597800, 4231800; 597100, 4233200; 687800, 4203800; 687900, 4203500; 708300, 4172100; 708400, 4172100; 595600, 4233800; 595400, 4234700; 688600, 4203800; 689100, 4203600; 708500, 4172200; 708500, 4172300; 595600, 4235500; 595600, 4236800; 689400, 4203800; 689400, 4204400; 708700, 4172400; 708800, 4172500; 596500, 4237600; 596300, 4237700; 690200, 4204400; 690300, 4203600; 708800, 4172600; 708700, 4172700; 595500, 4237100; 595200, 4237700; 691600, 4204200; 692500, 4204600; 708500, 4172700; 708400, 4172800; 595200, 4238200; 598800, 4238200; 692400, 4203100; 693200, 4202800; 708300, 4172700; 708200, 4172700; 598500, 4239100; 598000, 4239700; 693200, 4202100; 692800, 4200800; 708100, 4172600; 708000, 4172500; 598000, 4241000; 598800, 4241000; 695000, 4199200; 695800, 4199200; 707900, 4172500; 707800, 4172700; 598800, 4240600; 600400, 4240600; 696200, 4199100; 696500, 4198900; 707600, 4172600; 707400, 4172500; 602800, 4240600; 604300, 4239400; 696600, 4198700; 696800, 4198100; 707400, 4172600; 707200, 4172700; 605200, 4240600; 605300, 4239700; 696900, 4197800; 697300, 4198400; 707100, 4172300; 707000, 4172200; 605500, 4239000; 605400, 4238300; 697700, 4198400; 697500, 4197100; 706700, 4172200; 706700, 4172300; 604500, 4238100; 604500, 4237500; 697800, 4196700; 698300, 4196700; 706500, 4172300; 706400, 4172300; 605200, 4237200; 605700, 4235200; 699100, 4195600; 699300, 4195300; 706400, 4172400; 706200, 4172600; 605400, 4234900; 605000, 4233900; 699600, 4195300; 700000, 4194700; 706300, 4172700; 706400, 4172800; 604600, 4233700; 604200, 4233300; 700200, 4194600; 700200, 4194000; 706300, 4172800; 706200, 4172800; 604100, 4232500; 603800, 4231500; 700900, 4194000; 702000, 4193700; 706100, 4172900; 705900, 4173100; 602300, 4230800; 601400, 4230700; 702300, 4193800; 702300, 4194600; 705800, 4173300; 705800, 4173500; returning to 600700, 4230600. 702600, 4194700; 702900, 4194500; 706000, 4173800; 705900, 4173900; (6) Unit 3: Stanislaus and Calaveras 702900, 4193800; 702200, 4193100; 705800, 4174100; 705700, 4174200; counties, California. 702300, 4192400; 703900, 4191600; 705500, 4174200; 705400, 4174100; (i) From USGS 1:24,000 quadrangle 703900, 4191100; 704400, 4190700; 705400, 4173700; 705300, 4173500; maps Bachelor Valley, Copperopolis, 705400, 4190400; 705700, 4189100; 705200, 4173200; 705100, 4173200; Farmington, Knights Ferry, and 705500, 4188600; 705100, 4188500; 705100, 4172600; 704900, 4172400;

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704800, 4172100; 704600, 4172100; 715400, 4155600; 715300, 4156600; 719700, 4167800; 720500, 4167800; 704500, 4171900; 704400, 4171800; 715100, 4156600; 715000, 4156200; 720700, 4167700; 720900, 4167500; 704500, 4171600; 704600, 4171400; 714800, 4156100; 714800, 4155800; 721100, 4167400; 721300, 4167700; 704700, 4171500; 704900, 4171200; 714700, 4155600; 714200, 4155600; 721700, 4167700; 722000, 4167600; 704700, 4171100; 704900, 4171000; 714000, 4155400; 713800, 4155400; 722500, 4167600; 723200, 4167100; 704800, 4170900; 704600, 4170900; 712600, 4155200; 712600, 4157100; 723500, 4166300; 723000, 4166100; 704600, 4170700; 704800, 4170200; 711200, 4157100; 711100, 4161900; 723200, 4165600; 723400, 4165700; 705300, 4170200; 705800, 4169700; 706300, 4161800; 706100, 4165000; 723600, 4165600; 723600, 4165100; 705900, 4169300; 706000, 4168900; 703000, 4165100; 702500, 4165200; 723700, 4164900; 724300, 4164900; 706000, 4168800; 705400, 4168900; 702500, 4165900; 702600, 4166600; 725000, 4163700; 725300, 4163800; 704400, 4169000; 703400, 4169400; 703700, 4167200; 704600, 4168200; 724900, 4162800; 725100, 4162700; 703300, 4169700; 700700, 4169600; 704900, 4168200; 705300, 4167800; 725400, 4162700; 726000, 4164100; 700700, 4170400; 700400, 4170600; 705900, 4167800; 707000, 4167500; 726300, 4163500; 726200, 4163100; 700200, 4171100; 699500, 4171100; 707700, 4167600; 708100, 4167300; 726000, 4163000; 726100, 4162700; 698500, 4171200; 698500, 4172000; 709400, 4167300; 709600, 4167300; 726200, 4160600; 725800, 4160600; 697800, 4172300; 697100, 4171200; 710200, 4166800; 711000, 4167600; 725000, 4160200; 725300, 4159800; 694000, 4171200; 694000, 4172100; 711600, 4167800; 712600, 4167800; 726300, 4160200; 727000, 4159500; 694500, 4172100; 694500, 4174500; 713200, 4167600; 713200, 4167200; 727000, 4160400; 727300, 4160700; 696300, 4174500; 696300, 4175300; 712900, 4167200; 712600, 4166900; 727500, 4159800; 727600, 4159800; 697300, 4175300; 697300, 4176200; 711800, 4167000; 711600, 4166800; 727800, 4160400; 728300, 4160400; 697700, 4176200; 697700, 4179300; 711600, 4166600; 711800, 4166500; 729000, 4160800; 730400, 4160100; 696600, 4179300; 696400, 4180000; 711800, 4166600; 711900, 4166600; 730300, 4160500; 730600, 4160600; 695800, 4180000; 695500, 4179500; 712000, 4166300; 712100, 4166500; 731500, 4161400; 731900, 4161400; 695000, 4179300; 694400, 4179300; 712200, 4166500; 712300, 4166400; 732000, 4160800; 731700, 4160700; 694400, 4179800; 694800, 4180400; 712500, 4166400; 712500, 4166200; 732000, 4160000; 733500, 4159000; 733700, 4158700; 733300, 4158600; 694500, 4180800; 694500, 4181000; 712700, 4166200; 712700, 4166300; 694900, 4181400; 694500, 4181600; 733300, 4158300; 733800, 4157700; 712800, 4166300; 713000, 4166100; 694500, 4181900; 695100, 4182200; 733400, 4157100; 731700, 4156900; 712800, 4166000; 712700, 4165800; 696100, 4182200; 696200, 4181800; 730900, 4156500; 728900, 4156600; 712500, 4165800; 712500, 4165600; 695700, 4181600; 696300, 4180500; 727100, 4156700; 726900, 4156400; 712700, 4165600; 712600, 4165400; 697000, 4180100; 697400, 4180100; 725900, 4156400; 723900, 4155300; 712400, 4165500; 712300, 4165400; 697600, 4180400; 697600, 4182600; 723300, 4155400; 722500, 4155000; 712500, 4165300; 712500, 4165200; 700300, 4182600; 700300, 4183400; 722300, 4155000; 722300, 4157400; 712400, 4165100; 712600, 4165100; 699400, 4183400; 699400, 4184100; 723800, 4157500; 723700, 4159000; 712600, 4165000; 712600, 4164900; 700800, 4185100; 704100, 4186300; 722500, 4159000; 722200, 4159300; 712700, 4164800; 712600, 4164700; 705300, 4187700; 705700, 4187700; 720900, 4159300; 720900, 4158500; 706300, 4188200; 706700, 4188300; 712500, 4164800; 712400, 4164800; 719700, 4158500; 719700, 4158100; 706800, 4188500; 707100, 4188600; 712400, 4164300; 712800, 4164500; 719100, 4158000; 718700, 4157600; 707600, 4188800; 707900, 4189100; 713100, 4164300; 713200, 4164100; 718000, 4157700; 717800, 4157400; 708400, 4189600; 708700, 4190000; 712900, 4163800; 712900, 4163700; 717900, 4157200; 718000, 4157000; 709200, 4189300; 709200, 4188600; 713100, 4163800; 713500, 4164000; 718400, 4157300; 718700, 4156700; 710100, 4188200; 709900, 4186700; 713600, 4164000; 713600, 4164100; 718700, 4156300; 717400, 4156300; 708900, 4185800; 708800, 4185000; 713700, 4164300; 714200, 4164300; 717000, 4155800; 716600, 4155800; 709600, 4184200; 710300, 4183900; 714400, 4164500; 714500, 4164800; 716300, 4155700; 716200, 4155000; 710300, 4182900; 711400, 4182100; 714600, 4164800; 714800, 4164700; returning to 715900, 4154900. 712400, 4182100; 713200, 4182000; 714800, 4164200; 714400, 4164000; (9) Unit 6: Merced and Mariposa 714100, 4182600; 714700, 4182000; 714400, 4163600; 714500, 4163500; counties, California. 715200, 4181600; 715600, 4180900; 715200, 4164000; 715300, 4164200; (i) From USGS 1:24,000 quadrangle 715400, 4180400; 716600, 4180400; 715400, 4164200; 715300, 4163900; maps Atwater, Haystack Mtn., Indian 716900, 4179900; 717700, 4180100; 715100, 4163700; 715000, 4163500; Gulch, Merced, Merced Falls, Owens 718500, 4180000; 718700, 4179200; 714800, 4163300; 714900, 4163200; Reservoir, Planada, Snelling, Winton, 719300, 4178700; 719700, 4177600; 715000, 4163200; 715700, 4163200; and Yosemite Lake, California, land 720300, 4177700; 720700, 4177700; 715900, 4163100; 716000, 4162900; bounded by the following UTM 10 NAD 720800, 4176400; 721400, 4175900; 716100, 4162800; 716200, 4162800; 83 coordinates (E, N): 734700, 4133300; 722200, 4175300; 722700, 4175200; 716300, 4162900; 716400, 4163000; 734700, 4133700; 734100, 4133900; 722800, 4173600; 723000, 4173500; 716500, 4163100; 716600, 4163200; 733100, 4133900; 733100, 4134600; 723200, 4173600; 723700, 4173600; 716600, 4163500; 716500, 4163600; 732700, 4134600; 732600, 4135000; 724000, 4173300; 724100, 4172300; 716500, 4163800; 716600, 4164100; 732300, 4135500; 730300, 4135400; 722800, 4172200; 721700, 4171200; 716800, 4164500; 716700, 4164900; 729900, 4135700; 729900, 4136500; 721400, 4169900; 720500, 4168700; 716800, 4165300; 717200, 4165800; 726500, 4136500; 726400, 4136100; returning to 718900, 4168000. 717200, 4166100; 717000, 4166400; 725900, 4136100; 725900, 4135300; (8) Unit 5: Stanislaus and Merced 716600, 4166400; 716400, 4166300; 725600, 4135100; 725500, 4135100; counties, California. 716400, 4167000; 716600, 4167200; 725300, 4135500; 725100, 4135400; (i) From USGS 1:24,000 quadrangle 716600, 4167300; 717000, 4167400; 725000, 4135400; 725000, 4135600; maps Cooperstown, La Grange, Merced 717500, 4167400; 718100, 4167300; 724800, 4135700; 724600, 4135700; Falls, Montpelier, Paulsell, Snelling, 718500, 4167100; 718600, 4166600; 724600, 4134700; 724200, 4134700; and Turlock Lake, California, land 718700, 4166400; 719100, 4166700; 724200, 4135500; 723400, 4135500; bounded by the following UTM 10 NAD 719300, 4166800; 719800, 4166800; 723400, 4135600; 722800, 4135600; 83 coordinates (E, N): 715900, 4154900; 719500, 4167400; 719500, 4167600; 722800, 4135000; 722600, 4135000;

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722600, 4134700; 722500, 4134700; thence southwest along Bear Creek to y- (i) From USGS 1:24,000 quadrangle 722200, 4137900; 722800, 4137900; coordinate 4133300; thence west to the maps El Nido and Sandy Mush, 722800, 4139300; 721900, 4139300; point of beginning at 734700, 4133300. California, land bounded by the 721900, 4140200; 721000, 4140200; (10) Subunit 7A: Merced County, following UTM 10 NAD 83 coordinates 721000, 4140900; 717800, 4140900; California. (E, N): 711600, 4118100; 709900, 717800, 4137700; 717100, 4137700; (i) From USGS 1:24,000 quadrangle 4118100; 709900, 4118800; 708400, 717000, 4138200; 714500, 4140900; maps Arena, Atwater, Sandy Mush, and 4118800; 708400, 4118100; 707300, Turner Ranch, California, land bounded 714100, 4141300; 714100, 4142200; 4118100; 706800, 4118300; 705900, by the following UTM 10 NAD 83 713600, 4142400; 713200, 4143000; 4118700; 704600, 4119800; 703700, 713000, 4143900; 713100, 4144300; coordinates (E, N): 726800, 4115300; 4120700; 703200, 4121100; 702800, 713700, 4144600; 714500, 4145300; 725900, 4115300; 725900, 4116900; 4121700; 704200, 4121800; 703900, 714500, 4145700; 715800, 4145800; 724300, 4116900; 724300, 4117600; 717000, 4145800; 718000, 4145400; 722600, 4117500; 722600, 4117600; 4122800; 703400, 4122800; 703300, 718200, 4145900; 718200, 4147600; 721800, 4117600; 721800, 4118400; 4124500; 702000, 4125800; 700600, 719700, 4148400; 720600, 4148600; 720200, 4118400; 720200, 4117600; 4127000; 700100, 4127600; 700500, 720600, 4149200; 719600, 4149200; 719400, 4117600; 719500, 4115900; 4129200; 700500, 4130600; 701700, 719600, 4149800; 720300, 4149800; 717800, 4115900; 717800, 4116700; 4130600; 701800, 4129200; 703300, 721300, 4150700; 721700, 4150700; 717300, 4116700; 717300, 4117500; 4129200; 704200, 4129000; 704200, 724400, 4153300; 725000, 4153500; 718600, 4117500; 718600, 4118291; 4128400; 703400, 4128400; 703500, 725500, 4154200; 725800, 4154800; 718900, 4118300; 718900, 4118900; 4127800; 704200, 4127200; 704200, 727200, 4155900; 727800, 4155900; 718100, 4118900; 717700, 4119100; 4126500; 703500, 4126600; 703500, 728500, 4155600; 730200, 4155600; 717700, 4119900; 718500, 4120000; 4126100; 704500, 4126100; 704500, 731600, 4155500; 732400, 4155400; 718500, 4121300; 718900, 4121300; 4125400; 707200, 4125400; 707900, 732600, 4155200; 733200, 4154700; 718900, 4120000; 719300, 4120000; 4126100; 708300, 4126100; 708300, 734100, 4154900; 734600, 4154800; 719400, 4120400; 720400, 4120400; 4125400; 709100, 4125400; 709800, 735600, 4156000; 735900, 4156000; 720400, 4121700; 721300, 4121700; 4125700; 709800, 4126000; 710100, 737100, 4155400; 737800, 4155000; 722000, 4122500; 722900, 4122500; 4126200; 711500, 4126200; 711500, 738200, 4154200; 738300, 4153300; 722900, 4121200; 721300, 4121200; 4124600; 706700, 4124500; 706700, 739000, 4152800; 739100, 4152200; 721300, 4120300; 722900, 4120300; 4122100; 706800, 4120900; 711600, 740200, 4151800; 740800, 4151500; 722900, 4119500; 722200, 4119500; 4120700; 711600, 4119800; 712300, 740800, 4150300; 741100, 4149900; 722200, 4118500; 726100, 4118600; 4119800; 712400, 4119600; 713200, 741700, 4149400; 742100, 4148500; 726100, 4120100; 728600, 4120200; 4119500; 713100, 4118800; 711600, 742100, 4147100; 743400, 4146100; 728600, 4119200; 727800, 4119200; 4118700; returning to 711600, 4118100. 744000, 4145600; 744400, 4144600; 727700, 4118600; 727500, 4118400; 744300, 4143900; 743900, 4142700; 727500, 4116900; 726800, 4116900; (12) Map follows of all critical habitat 744000, 4142000; 744200, 4141700; returning to 726800, 4115300. units for Neostapfia colusana (Colusa 745500, 4140300; thence south to x- (11) Subunit 7B: Merced County, grass). coordinate 745500 on Bear Creek; California. BILLING CODE 4310–55–P

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BILLING CODE 4310–55–P (1) Critical habitat units are depicted and Tulare counties, California, on the Family Poaceae: Orcuttia inaequalis for Merced, Mariposa, Madera, Fresno map below. (San Joaquin Valley Orcutt Grass).

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(2) The primary constituent elements 717800, 4137700; 717100, 4137700; Ash Slough to x-coordinate 751800; of critical habitat for Orcuttia inaequalis 717000, 4138200; 714500, 4140900; thence north to 751800, 4114900; are the habitat components that provide: 714100, 4141300; 714100, 4142200; 751600, 4115400; 752000, 4115800; (i) Vernal pools, swales, and other 713600, 4142400; 713200, 4143000; 751900, 4116000; 751400, 4116100; ephemeral wetlands and depressions of 713000, 4143900; 713100, 4144300; 751100, 4116300; 751100, 4116700; appropriate sizes and depths and the 713700, 4144600; 714500, 4145300; 750700, 4116700; 749900, 4116500; adjacent upland margins of these 714500, 4145700; 715800, 4145800; 745100, 4116500; 745100, 4117700; depressions that sustain Orcuttia 717000, 4145800; 718000, 4145400; 744500, 4117800; 744500, 4118500; inaequalis germination, growth and 718200, 4145900; 718200, 4147600; 743500, 4118500; 743500, 4119100; reproduction, including but not limited 719700, 4148400; 720600, 4148600; 745300, 4119100; 745300, 4119600; to vernal pools on alluvial fans, high 720600, 4149200; 719600, 4149200; 744600, 4119600; 744600, 4120700; and low stream terraces, and tabletop 719600, 4149800; 720300, 4149800; 745500, 4120700; 745800, 4121600; lava flows. These habitats typically 721300, 4150700; 721700, 4150700; 745400, 4121600; 745400, 4121800; become inundated during winter rains, 724400, 4153300; 725000, 4153500; 746100, 4121800; 746200, 4122200; but are dry during the summer and do 725500, 4154200; 725800, 4154800; 747500, 4122400; 747500, 4123900; not necessarily fill with water every 727200, 4155900; 727800, 4155900; 747000, 4124700; 746900, 4125100; year; and; 728500, 4155600; 730200, 4155600; 743600, 4125000; 743600, 4127000; (ii) The associated watershed(s) and 731600, 4155500; 732400, 4155400; 742700, 4127000; 741900, 4127000; hydrologic features, including the pool 732600, 4155200; 733200, 4154700; 741900, 4128700; 742700, 4128700; basin, swales, and surrounding uplands 734100, 4154900; 734600, 4154800; 742700, 4129200; 743500, 4129600; (which may vary in extent depending on 735600, 4156000; 735900, 4156000; 743500, 4132200; 744000, 4133400; pool size and depth, soil type and 737100, 4155400; 737800, 4155000; 742700, 4133400; 742600, 4133500; depth, hardpan or claypan type and 738200, 4154200; 738300, 4153300; 741500, 4132900; 740900, 4132200; extent, topography, and climate) that 739000, 4152800; 739100, 4152200; 740800, 4132600; 740300, 4132600; contribute to the filling and drying of 740200, 4151800; 740800, 4151500; 740300, 4133500; 741000, 4133500; the vernal pool or ephemeral wetland, 740800, 4150300; 741100, 4149900; 741000, 4133900; 741900, 4133900; and that maintain suitable periods of 741700, 4149400; 742100, 4148500; 741800, 4135800; 741000, 4135800; pool inundation, water quality, and soil 742100, 4147100; 743400, 4146100; 741000, 4136400; thence north to x- moisture for Orcuttia inaequalis 744000, 4145600; 744400, 4144600; coordinate 741000 on Bear Creek; germination, growth and reproduction, 744300, 4143900; 743900, 4142700; thence northeast along Bear Creek to y- and dispersal, but not necessarily every 744000, 4142000; 744200, 4141700; coordinate 4139300; thence east to the year. 745500, 4140300; 745500, 4139600; point of beginning at 745500, 4139300. (3) Critical habitat does not include 745500, 4139500; 745400, 4139400; (6) Unit 3: Madera County, California. existing man-made features and thence southwest to y-coordinate (i) From USGS 1:24,000 quadrangle structures, such as buildings, roads, 4139300 on Bear Creek; thence maps Le Grand, Owens Reservoir, aqueducts, railroads, airport runways southwest along Bear Creek to y- Plainsburg, Planada, and Raynor Creek, and buildings, other paved areas, lawns, coordinate 4133300; thence west to the California, land bounded by the and other urban landscaped areas not point of beginning at 734700, 4133300. following UTM 10 NAD 83 coordinates containing one or more of the primary (5) Unit 2: Merced, Mariposa and (E, N): 766600, 4105100; 764500, constituent elements. Madera counties, California. 4105000; 764500, 4106400; 764800, (4) Unit 1: Merced and Mariposa (i) From USGS 1:24,000 quadrangle 4106300; 765200, 4106400; 765700, counties, California. maps Le Grand, Owens Reservoir, 4106500; 765900, 4106700; 766100, (i) From USGS 1:24,000 quadrangle Plainsburg, Planada, and Raynor Creek, 4106700; 766100, 4106500; 766300, maps Atwater, Haystack Mtn., Indian California, land bounded by the 4106400; 766600, 4106300; 766700, Gulch, Merced, Merced Falls, Owens following UTM 10 NAD 83 coordinates 4106300; 766600, 4107800; 765200, Reservoir, Planada, Snelling, Winton, (E, N): 745500, 4139300; 745500, 4107800; 764400, 4108600; 764100, and Yosemite Lake, California, land 4139100; 745500, 4137700; 746600, 4109100; 763300, 4109500; 763200, bounded by the following UTM 10 NAD 4137100; 747300, 4137300; 747200, 4109800; 764800, 4109900; 764700, 83 coordinates (E, N): 734700, 4133300; 4135800; 747600, 4135300; 747600, 4112300; 766400, 4112300; thence east 734700, 4133700; 734100, 4133900; 4134800; 748100, 4134400; 747800, to UTM zone 11, land bounded by the 733100, 4133900; 733100, 4134600; 4133700; 748400, 4133300; 748600, following UTM 11 NAD 83 coordinates 732700, 4134600; 732600, 4135000; 4133900; 749500, 4133400; 749600, (E, N): 233400, 4112300; 233500, 732300, 4135500; 730300, 4135400; 4132100; 750400, 4131600; 750100, 4112300; 234100, 4112200; 234700, 729900, 4135700; 729900, 4136500; 4129800; 753100, 4129800; 754000, 4112200; 235500, 4112900; 235700, 726500, 4136500; 726400, 4136100; 4129300; 753400, 4128400; 752500, 4112600; 235700, 4111500; 236200, 725900, 4136100; 725900, 4135300; 4126600; 752300, 4126400; 752200, 4111800; 236400, 4111800; 236800, 725600, 4135100; 725500, 4135100; 4125500; 752800, 4125600; 753900, 4111300; 236400, 4110800; 236400, 725300, 4135500; 725100, 4135400; 4125000; 755000, 4125700; 755100, 4109500; 237000, 4108700; 237600, 725000, 4135400; 725000, 4135600; 4125300; 755900, 4125200; 756100, 4108600; 238400, 4109300; 241300, 724800, 4135700; 724600, 4135700; 4124900; 757100, 4124900; 757300, 4109300; 242100, 4108700; 242100, 724600, 4134700; 724200, 4134700; 4124400; 756700, 4124000; 757000, 4107300; 242100, 4106800; 242300, 724200, 4135500; 723400, 4135500; 4123700; 757600, 4123900; 757900, 4106800; 244300, 4105600; 245200, 723400, 4135600; 722800, 4135600; 4123200; 758400, 4122900; 759200, 4104700; 245800, 4103600; 246100, 722800, 4135000; 722600, 4135000; 4122900; 760300, 4121300; 761000, 4102700; 246500, 4101800; 246800, 722600, 4134700; 722500, 4134700; 4121000; 761300, 4120300; 762100, 4101300; 247200, 4100900; 248300, 722200, 4137900; 722800, 4137900; 4119400; thence south to x-coordinate 4100900; 248900, 4101400; 250200, 722800, 4139300; 721900, 4139300; 762100 on the Chowchilla River; thence 4101400; 250100, 4099500; 251400, 721900, 4140200; 721000, 4140200; southwest along the Chowchilla River to 4097600; 251400, 4095900; 252000, 721000, 4140900; 717800, 4140900; Ash Slough; thence southwest along 4096200; 252700, 4096200; 252700,

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4095700; 252500, 4095700; 252100, 4108300; 269000, 4108700; 268500, 4037200; 291800, 4037200; 291900, 4095600; 252100, 4094800; 250500, 4108700; 268300, 4110000; 268800, 4036800; 292700, 4036800; 292700, 4094800; 250400, 4093200; 253300, 4110400; 268900, 4111000; 268300, 4037600; 291900, 4037700; 292000, 4093200; 253300, 4092800; 253600, 4111300; 268500, 4111500; 268600, 4039700; 292500, 4039700; 292500, 4091300; 253400, 4090500; 251100, 4112300; 268800, 4112400; 270600, 4039400; 292800, 4039400; 292800, 4089300; 251100, 4089300; 247000, 4112400; 270800, 4112100; 270700, 4038500; 294400, 4038500; 294300, 4089400; 245400, 4089400; 245400, 4111300; 269600, 4110800; 269700, 4035500; 293500, 4035500; 293500, 4090100; 245500, 4093000; 242300, 4110500; 270000, 4110200; 270600, 4034800; 293800, 4034800; returning to 4093100; 242300, 4095000; 242500, 4109700; 270800, 4108800; 271300, 293800, 4034000. 4095100; 244000, 4095000; 244000, 4108400; 271500, 4107800; 271600, (11) Subunit 6B: Tulare County, 4096700; 244800, 4096600; 244900, 4107300; returning to 271200, 4106800. California. 4098200; 245700, 4098200; 245700, (9) Subunit 5B: Fresno County, 4099800; 242500, 4100000; 242400, California. (i) From USGS 1:24,000 quadrangle 4095200; 242300, 4095200; 237600, (i) From USGS 1:24,000 quadrangle maps Auckland, Ivanhoe, Stokes Mtn., 4095200; 237600, 4096200; 237700, maps Academy and Millerton Lake East, and Woodlake, California, land bounded 4098500; 239600, 4098400; 239700, California, land bounded by the by the following UTM 11 NAD 83 4100000; 236100, 4100100; 236100, following UTM 11 NAD 83 coordinates coordinates (E, N): 308300, 4033500; 4100400; 237000, 4102700; 237000, (E, N): 267300, 4097300; 266900, 307800, 4033500; 306600, 4034100; 4104300; 237000, 4104900; 234800, 4097300; 267000, 4097600; 267800, 305900, 4035100; 305700, 4036700; 4105000; 234700, 4105300; 234600, 4098300; 268100, 4098700; 268100, 305300, 4038400; 305000, 4038600; 4105300; 234100, 4105100; 233200, 4098900; 268000, 4099100; 267400, 305000, 4039200; 305300, 4039300; 4105100; thence west to UTM zone 10 4099800; 267400, 4100300; 267700, 305600, 4039300; 306000, 4038600; to the point of beginning at UTM 10 4100800; 268100, 4101400; 268600, 306500, 4038600; 306900, 4039000; NAD 83 coordinates 766600, 4105100. 4101400; 269100, 4101100; 269600, 306800, 4039900; 308100, 4040200; (7) Unit 4: Fresno County, California. 4101100; 269800, 4101300; 269900, 308500, 4040700; 308200, 4041500; (i) From USGS 1:24,000 quadrangle 4101500; 269600, 4102200; 269200, 307600, 4041500; 307100, 4042000; map Friant, California, land bounded by 4102400; 268600, 4102800; 268700, 307100, 4042600; 307700, 4043700; the following UTM 11 NAD 83 4103800; 269100, 4103800; 269600, 307800, 4044500; 308200, 4044700; coordinates (E, N): 260100, 4086600; 4103100; 270200, 4103500; 270300, 309000, 4043900; 309600, 4043400; 259200, 4086600; 259200, 4087700; 4103500; 270700, 4102500; 270500, 311700, 4043400; 312100, 4043000; 259600, 4087500; 260000, 4087500; 4102400; 270300, 4102200; 270300, 312700, 4043000; 313000, 4042700; 260100, 4087900; 259700, 4088100; 4101900; 270500, 4101500; 270600, 313000, 4042300; 312500, 4042000; 258500, 4088200; 258000, 4088300; 4101100; 270500, 4101000; 270200, 311000, 4041000; 311000, 4040400; 258000, 4089100; 258500, 4089300; 4100700; 269400, 4100500; 268300, 311200, 4040000; 311700, 4040000; 258500, 4089800; 258300, 4089800; 4100500; 268100, 4100300; 268100, 312100, 4040700; 312700, 4041000; 257700, 4089200; 256600, 4089200; 4100100; 268400, 4099800; 268600, 313000, 4041000; 313600, 4040500; 256600, 4090200; 256800, 4090800; 4099500; 268700, 4099200; 268700, 313700, 4040300; 313100, 4039600; 256900, 4092700; 257200, 4094300; 4098900; 268600, 4098300; 268500, 312700, 4039600; 312700, 4039400; 257300, 4095500; 258600, 4096700; 4098100; 268400, 4097800; 268100, 313300, 4039400; 313500, 4039000; 258900, 4096700; 259600, 4096700; 4097600; 267800, 4097400; returning to 313100, 4038600; 313700, 4038600; 259600, 4094700; 260300, 4094700; 267300, 4097300. 313900, 4038500; 314100, 4038000; (10) Subunit 6A: Tulare County, 260300, 4093300; 259400, 4091700; 314600, 4038000; 314800, 4037500; 260800, 4091700; 262200, 4091100; California. (i) From USGS 1:24,000 quadrangle 314800, 4037200; 314000, 4036600; 262900, 4091100; 262900, 4090400; 314100, 4036400; 314900, 4036400; 263000, 4090100; 262700, 4089600; maps Monson and Traver, California, land bounded by the following UTM 11 315100, 4036600; 315500, 4036600; 262400, 4089500; 261800, 4089100; 316100, 4036400; 316400, 4035400; 261500, 4089500; 261400, 4088200; NAD 83 coordinates (E, N): 293800, 4034000; 292500, 4034000; 292600, 316400, 4035200; 315900, 4034500; 261100, 4088200; 261100, 4087400; 314100, 4034600; 313400, 4034900; 260200, 4087400; returning to 260100, 4035400; 291700, 4035400; 291700, 4035600; 290500, 4035700; 290500, 311100, 4035100; 310700, 4034800; 4086600. 310500, 4034800; 310200, 4035000; (8) Subunit 5A: Madera County, 4036100; 289800, 4036100; 289800, 310200, 4036600; 309800, 4036700; California. 4035700; 289400, 4035700; 289400, (i) From USGS 1:24,000 quadrangle 4034500; 288500, 4034500; 288500, 308500, 4036700; 308400, 4035800; maps Millerton Lake East and North 4034200; 287700, 4034200; 287700, 309100, 4035400; 309100, 4034200; Fork, California, land bounded by the 4034500; 287000, 4034600; 287000, returning to 308300, 4033500. following UTM 11 NAD 83 coordinates 4035100; 288500, 4035100; 288500, (12) Map follows of all critical habitat (E, N): 271200, 4106800; 270200, 4035600; 287700, 4035700; 287700, units for Orcuttia inaequalis (San 4106800; 269900, 4107000; 269900, 4036700; 289300, 4036700; 289400, Joaquin Valley Orcutt grass). 4107600; 270100, 4108600; 269300, 4037400; 291100, 4037400; 291100, BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00135 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60018 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C (1) Critical habitat units are depicted and Fresno counties, California, on the Family Poaceae: Orcuttia pilosa for Tehama, Butte, Glenn, Colusa, map below. (Hairy Orcutt Grass). Stanislaus, Merced, Madera, Mariposa

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(2) The primary constituent elements bounded by the following UTM 10 NAD 713200, 4167600; 713200, 4167200; of critical habitat for Orcuttia pilosa are 83 coordinates (E, N): 611100, 4387700; 712900, 4167200; 712600, 4166900; the habitat components that provide: 610400, 4388500; 610300, 4388800; 711800, 4167000; 711600, 4166800; (i) Vernal pools, swales, and other 609200, 4389800; 609100, 4390100; 711600, 4166600; 711800, 4166500; ephemeral wetlands and depressions of 610200, 4391100; 610300, 4391400; 711800, 4166600; 711900, 4166600; appropriate sizes and depths and the 611100, 4391400; 611500, 4391300; 712000, 4166300; 712100, 4166500; adjacent upland margins of these 612500, 4390200; 613300, 4389600; 712200, 4166500; 712300, 4166400; depressions that sustain Orcuttia pilosa 613300, 4388900; 613200, 4388400; 712500, 4166400; 712500, 4166200; germination, growth and reproduction, 612800, 4388000; 612100, 4387900; 712700, 4166200; 712700, 4166300; including but not limited to features 611500, 4387900; returning to 611100, 712800, 4166300; 713000, 4166100; occurring on both acidic and saline- 4387700. 712800, 4166000; 712700, 4165800; alkaline soils, with an iron-silica (6) Unit 3: Glenn and Colusa counties, 712500, 4165800; 712500, 4165600; cemented hardpan or claypan, and that California. 712700, 4165600; 712600, 4165400; typically become inundated during (i) From USGS 1:24,000 quadrangle 712400, 4165500; 712300, 4165400; winter rains, but are dry during the maps Logandale, Maxwell, Moulton 712500, 4165300; 712500, 4165200; summer and do not necessarily fill with Weir, and Princeton, California, land 712400, 4165100; 712600, 4165100; bounded by the following UTM 10 NAD water every year; and 712600, 4165000; 712600, 4164900; (ii) The associated watershed(s) and 83 coordinates (E, N): 572900, 4357400; 712700, 4164800; 712600, 4164700; hydrologic features, including the pool 571200, 4357400; 571200, 4358200; 712500, 4164800; 712400, 4164800; basin, swales, and surrounding uplands 570400, 4358200; 570400, 4359000; 712400, 4164300; 712800, 4164500; (which may vary in extent depending on 569600, 4359000; 569500, 4360500; 713100, 4164300; 713200, 4164100; pool size and depth, soil type and 569300, 4362200; 569500, 4363300; depth, hardpan or claypan type and 569500, 4367200; 570000, 4367200; 712900, 4163800; 712900, 4163700; extent, topography, and climate) that 569900, 4368400; 570300, 4368400; 713100, 4163800; 713500, 4164000; contribute to the filling and drying of 571000, 4367600; 571000, 4367800; 713600, 4164000; 713600, 4164100; the vernal pool or ephemeral wetland, 570700, 4368500; 570900, 4368800; 713700, 4164300; 714200, 4164300; and that maintain suitable periods of 571500, 4368800; 571900, 4368300; 714400, 4164500; 714500, 4164800; pool inundation, water quality, and soil 571900, 4367600; 572100, 4367600; 714600, 4164800; 714800, 4164700; moisture for Orcuttia pilosa 572400, 4368100; 572400, 4368400; 714800, 4164200; 714400, 4164000; germination, growth and reproduction, 572600, 4368900; 572800, 4368900; 714400, 4163600; 714500, 4163500; and dispersal, but not necessarily every 573000, 4368100; 573400, 4368000; 715200, 4164000; 715300, 4164200; year. 573800, 4367600; 574100, 4367300; 715400, 4164200; 715300, 4163900; (3) Critical habitat does not include 574400, 4367200; 574500, 4366400; 715100, 4163700; 715000, 4163500; existing man-made features and 574900, 4366400; 574900, 4365600; 714800, 4163300; 714900, 4163200; structures, such as buildings, roads, 574700, 4365500; 574400, 4364100; 715000, 4163200; 715700, 4163200; aqueducts, railroads, airport runways 575200, 4363900; 575600, 4363600; 715900, 4163100; 716000, 4162900; and buildings, other paved areas, lawns, 575100, 4362400; 575600, 4361400; 716100, 4162800; 716200, 4162800; and other urban landscaped areas not 575100, 4360700; 576000, 4359600; 716300, 4162900; 716400, 4163000; containing one or more of the primary 575500, 4358900; 575700, 4358300; 716500, 4163100; 716600, 4163200; constituent elements. 575900, 4357700; 575300, 4357800; 716600, 4163500; 716500, 4163600; (4) Unit 1: Tehama and Butte 575000, 4357700; 574700, 4357700; 716500, 4163800; 716600, 4164100; counties, California. 573600, 4357800; 573500, 4358200; 716800, 4164500; 716700, 4164900; (i) From USGS 1:24,000 quadrangle 572900, 4358200; returning to 572900, 716800, 4165300; 717200, 4165800; maps Acorn Hollow, Foster Island, 4357400. 717200, 4166100; 717000, 4166400; Nord, Richardson Springs NW, and (7) Unit 4: Stanislaus, Merced and 716600, 4166400; 716400, 4166300; Vina, California, land bounded by the Mariposa counties, California. 716400, 4167000; 716600, 4167200; following UTM 10 NAD 83 coordinates (i) From USGS 1:24,000 quadrangle 716600, 4167300; 717000, 4167400; (E, N): 583100, 4413100; 582900, maps Cooperstown, La Grange, Merced 717500, 4167400; 718100, 4167300; 4413400; 582900, 4415900; 582000, Falls, Montpelier, Paulsell, Snelling, 718500, 4167100; 718600, 4166600; 4418300; 581800, 4419200; 582000, and Turlock Lake, California, land 718700, 4166400; 719100, 4166700; 4419500; 581400, 4420000; 581400, bounded by the following UTM 10 NAD 719300, 4166800; 719800, 4166800; 4420400; 581800, 4420700; 581600, 83 coordinates (E, N): 715900, 4154900; 719500, 4167400; 719500, 4167600; 4421000; 583200, 4422600; 583500, 715400, 4155600; 715300, 4156600; 719700, 4167800; 720500, 4167800; 4423600; 585200, 4424500; 586000, 715100, 4156600; 715000, 4156200; 720700, 4167700; 720900, 4167500; 4424500; 587500, 4426100; 588200, 714800, 4156100; 714800, 4155800; 721100, 4167400; 721300, 4167700; 4426500; 588800, 4430200; 589500, 714700, 4155600; 714200, 4155600; 721700, 4167700; 722000, 4167600; 4429500; 589500, 4428600; 589500, 714000, 4155400; 713800, 4155400; 722500, 4167600; 722900, 4167500; 4428000; 589800, 4427100; 590500, 712600, 4155200; 712600, 4157100; 723300, 4167400; 723000, 4168400; 4426400; 590500, 4425300; 591200, 711200, 4157100; 711100, 4161900; 723000, 4169200; 723300, 4169700; 4424400; 591500, 4423300; 591600, 706300, 4161800; 706100, 4165000; 723800, 4169800; 724100, 4169800; 4422100; 590900, 4420900; 590700, 702900, 4165100; 702500, 4165200; 724600, 4169200; 724700, 4168300; 4419800; 588000, 4417000; 587500, 702500, 4165900; 702600, 4166600; 725100, 4167900; 725300, 4167200; 4416400; 587200, 4415500; 587200, 703700, 4167200; 704600, 4168200; 726200, 4167100; 726500, 4166800; 4414000; 586400, 4413800; 586200, 704900, 4168200; 705300, 4167800; 726500, 4166600; 727300, 4166000; 4413600; 586200, 4413400; 584200, 705900, 4167800; 707000, 4167500; 727700, 4165800; 729000, 4165800; 4413400; returning to 583100, 4413100. 707700, 4167600; 708100, 4167300; 730100, 4165400; 730400, 4165100; (5) Unit 2: Butte County, California. 709400, 4167300; 709600, 4167300; 730500, 4164900; 730700, 4164100; (i) From USGS 1:24,000 quadrangle 710200, 4166800; 711000, 4167600; 731300, 4164100; 731700, 4163800; map Hamlin Canyon, California, land 711600, 4167800; 712600, 4167800; 731800, 4163400; 732200, 4162800;

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732200, 4162500; 732700, 4162700; 765400, 4115900; 765400, 4116400; 4093200; 253300, 4093200; 253300, 733000, 4162600; 733600, 4162100; 766100, 4116400; 766100, 4115800; 4092800; 253800, 4090400; 253200, 733700, 4161500; 733600, 4161000; 765900, 4114300; thence southeast to 4089700; 252600, 4089000; 252400, 734600, 4160400; 734800, 4160200; UTM zone 11, land bounded by the 4087900; 252200, 4087700; 251900, 734800, 4159500; 734400, 4158700; following UTM 11 NAD 83 coordinates 4086900; 251800, 4086300; 250200, 734300, 4158100; 734500, 4157900; (E, N): 233400, 4114200; 233900, 4085000; 250200, 4084300; 249300, 734700, 4158000; 734900, 4158300; 4114300; 234200, 4114300; 234200, 4083200; 248600, 4082700; 248000, 735000, 4158800; 735500, 4158800; 4113900; 234300, 4112700; 234900, 4082700; 246400, 4083400; 245900, 735700, 4158600; 735600, 4158100; 4112700; 235500, 4112900; 235700, 4083400; 244700, 4082300; 244000, 736200, 4157500; 736800, 4157300; 4112600; 235700, 4111500; 236200, 4082300; 243400, 4082800; 242500, 736900, 4157100; 736900, 4156500; 4111800; 236400, 4111800; 236800, 4083300; 242500, 4084100; 242000, 736300, 4156500; 736000, 4156300; 4111300; 236400, 4110800; 236400, 4084300; 242000, 4084700; 241700, 735500, 4156300; 734100, 4156900; 4109500; 237000, 4108700; 237600, 4084700; 241700, 4085500; 241300, 733400, 4157100; 731700, 4156900; 4108600; 238400, 4109300; 241300, 4085500; 241300, 4087100; 239100, 730900, 4156500; 728900, 4156600; 4109300; 242100, 4108700; 242100, 4087100; 238800, 4087200; 238800, 727100, 4156700; 726900, 4156400; 4107300; 240900, 4106000; 239300, 4087800; 239100, 4088100; 239600, 725900, 4156400; 723900, 4155300; 4104100; 238900, 4104300; 238500, 4088100; 239600, 4088900; 242200, 723300, 4155400; 722500, 4155000; 4104600; 238100, 4104300; 237100, 4088800; 242200, 4086000; 242600, 722300, 4155000; 722300, 4157400; 4104300; 237100, 4105800; 237000, 4086000; 242600, 4084700; 243400, 723800, 4157500; 723700, 4159000; 4106800; 236000, 4107000; 235800, 4084700; 243400, 4083500; 244400, 722500, 4159000; 722200, 4159300; 4107100; 234900, 4107100; 234300, 4083500; 244500, 4083900; 246100, 720900, 4159300; 720900, 4158500; 4107200; 233900, 4108200; 233200, 4083900; 246100, 4084500; 246500, 719700, 4158500; 719700, 4158100; 4108000; thence southwest to UTM 4084900; 247000, 4084900; 247000, 719100, 4158000; 718700, 4157600; zone 10 to the point of beginning at 4084600; 247800, 4084600; 247800, 718000, 4157700; 717800, 4157400; UTM 10 NAD 83 coordinates 766500, 4083800; 249300, 4083800; 249400, 717900, 4157200; 718000, 4157000; 4107800. 4085300; 248500, 4085300; 248500, 718400, 4157300; 718700, 4156700; (9) Unit 6: Madera and Fresno 4086600; 250000, 4086600; 250000, 718700, 4156300; 717400, 4156300; Counties, California. 4085900; 250300, 4085400; 251000, 717000, 4155800; 716600, 4155800; (i) From USGS 1:24,000 quadrangle 4086000; 251200, 4087100; 251100, 716300, 4155700; 716200, 4155000; maps Daulton, Fresno North, Gregg, 4089300; 251000, 4092200; 250400, returning to 715900, 4154900. Herndon, Lanes Bridge, and Little Table 4092200; 250400, 4092800; 245500, (8) Unit 5: Madera County, California. Mtn., California, land bounded by the 4093000; 242300, 4093100; 242300, (i) From USGS 1:24,000 quadrangle following UTM 11 NAD 83 coordinates 4095000; 242500, 4095100; 244000, maps Daulton, Kismet, Raymond, and (E, N): 239300, 4104100; 240900, 4095000; 244000, 4096700; 244800, Raynor Creek, California, land bounded 4106000; 242100, 4107300; 242100, 4096600; 244900, 4098200; 245700, by the following UTM 10 NAD 83 4106800; 242300, 4106800; 244300, 4098200; 245700, 4099800; 242500, coordinates (E, N): 766500, 4107800; 4105600; 245200, 4104700; 245800, 4100000; 242400, 4095200; 242300, 765200, 4107800; 764700, 4108100; 4103600; 246100, 4102700; 246500, 4095200; 237600, 4095200; 237600, 764100, 4109200; 763400, 4109300; 4101800; 246800, 4101300; 247200, 4096200; 237700, 4098500; 236100, 763200, 4109800; 761500, 4109800; 4100900; 248300, 4100900; 248900, 4098500; 236100, 4100100; 236100, 761500, 4111300; 759800, 4111300; 4101400; 250200, 4101400; 250200, 4100400; 237500, 4101900; 238400, 759800, 4112500; 759700, 4117100; 4100200; 250700, 4098600; 250700, 4102700; 238800, 4103300; returning to 760400, 4117100; 760500, 4118000; 4097700; 251400, 4097600; 251400, 239300, 4104100. 762100, 4118900; 762800, 4118000; 4095900; 252000, 4096200; 252700, (10) Map follows of all critical habitat 763300, 4117200; 763500, 4117600; 4096200; 252800, 4095200; 252500, units for Orcuttia pilosa (hairy Orcutt 763700, 4117600; 764100, 4117300; 4095700; 252100, 4095600; 252100, grass). 764200, 4116800; 764500, 4115900; 4094800; 250500, 4094800; 250400, BILLING CODE 4310–55–P

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BILLING CODE 4310–55–C (1) Critical habitat units are depicted Sacramento counties, California, on the Family Poaceae: Orcuttia tenuis for Siskiyou, Modoc, Shasta, Lassen, map below. (Slender Orcutt Grass). Tehama, Butte, Plumas, Lake, and

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00139 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.011 60022 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

(2) The primary constituent elements 4559300; 637000, 4557700; 636000, 4509900; 635900, 4509600; returning to of critical habitat for Orcuttia tenuis are 4555600; returning to 635000, 4555400. 634400, 4509200. the habitat components that provide: (5) Subunit 1B: Shasta County, (9) Subunit 1F: Lassen County, (i) Vernal pools, swales, and other California. California. ephemeral wetlands and depressions of (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle appropriate sizes and depths and the maps Burney Falls and Dana, California, maps Poison Lake and Swains Hole, adjacent upland margins of these land bounded by the following UTM 10 California, land bounded by the depressions that sustain Orcuttia tenuis NAD 83 coordinates (E, N): 617200, following UTM 10 NAD 83 coordinates germination, growth and reproduction, 4548600; 616900, 4548600; 616800, (E, N): 644800, 4500100; 644300, including but not limited to Northern 4549000; 615900, 4549500; 615700, 4500300; 643500, 4500400; 642400, Volcanic Ashflow and Northern 4549800; 615200, 4549900; 614900, 4500800; 641500, 4501500; 641200, Volcanic Mudflow vernal pools (Sawyer 4550100; 614900, 4550500; 615400, 4502700; 641600, 4504500; 643500, and Keeler-Wolf 1995) with iron-silica 4550700; 615900, 4550800; 616100, 4505500; 645100, 4505200; 645300, and bedrock hardpan impervious layers, 4550900; 616500, 4550600; 616800, 4506300; 646300, 4507900; 647300, and that typically become inundated 4550500; 617100, 4550000; 617300, 4508600; 648800, 4508600; 649100, during winter rains, but are dry during 4549400; 617400, 4549100; 617500, 4508800; 650600, 4508800; 651400, the summer and do not necessarily fill 4548700; returning to 617200, 4548600. 4508300; 652000, 4507200; 652200, with water every year; and (6) Subunit 1C: Shasta County, 4505700; 651500, 4504500; 650700, (ii) The associated watershed(s) and California. 4504100; 650400, 4503700; 650900, 4502000; 650400, 4501200; 650200, hydrologic features, including the pool (i) From USGS 1:24,000 quadrangle basin, swales, and surrounding uplands 4501200; 649600, 4502800; 649100, maps Burney and Burney Falls, (which may vary in extent depending on 4503200; 647400, 4504400; 647200, California, land bounded by the pool size and depth, soil type and 4504300; 646800, 4503400; 647500, following UTM 10 NAD 83 coordinates depth, hardpan or claypan type and 4501700; 647500, 4500700; 646800, (E, N): 614100, 4535000; 613400, extent, topography, and climate) that 4500300; returning to 644800, 4500100. 4535200; 612700, 4535200; 612500, contribute to the filling and drying of (10) Subunit 1G: Lassen County, 4535000; 612000, 4535200; 611700, the vernal pool or ephemeral wetland, California. 4535900; 611700, 4537000; 611500, and that maintain suitable periods of (i) From USGS 1:24,000 quadrangle 4538200; 611400, 4538600; 611900, pool inundation, water quality, and soil maps Bogard Buttes, Harvey Mtn., Pine 4538700; 612300, 4539200; 612400, moisture for Orcuttia tenuis Creek Valley, and Poison Lake, germination, growth and reproduction, 4539700; 613800, 4539100; 614300, California, land bounded by the and dispersal, but not necessarily every 4539400; 614600, 4539200; 614400, following UTM 10 NAD 83 coordinates year. 4538400; 614400, 4535300; returning to (E, N): 661600, 4495200; 661300, (3) Critical habitat does not include 614100, 4535000. 4495200; 660100, 4496700; 659300, existing man-made features and (7) Subunit 1D: Shasta County, 4497700; 657500, 4499000; 655500, structures, such as buildings, roads, California. 4500700; 655000, 4501200; 654900, aquaducts, railroads, airport runways (i) From USGS 1:24,000 quadrangle 4501700; 654900, 4502100; 655600, and buildings, other paved areas, lawns, map Burney, California, land bounded 4501800; 656600, 4502800; 657700, and other urban landscaped areas not by the following UTM 10 NAD 83 4503200; 659900, 4503700; 661400, containing one or more of the primary coordinates (E, N): 611800, 4528900; 4504600; 662200, 4505200; 662900, consituent elements. 611100, 4528900; 610800, 4529000; 4505100; 663600, 4504700; 664200, (4) Subunit 1A: Siskiyou, Modoc and 610100, 4529600; 609500, 4529700; 4504500; 664400, 4504300; 664400, Shasta counties, California. 609300, 4530000; 608200, 4530700; 4503100; 664100, 4503000; 662800, (i) From USGS 1:24,000 quadrangle 607600, 4530900; 607200, 4532300; 4502300; 661600, 4501100; 661300, maps Day and Timbered Crater, 605800, 4533500; 606300, 4533900; 4499600; 661600, 4497900; 661800, California, land bounded by the 606800, 4534500; 607500, 4535500; 4497500; 662700, 4496800; returning to following UTM 10 NAD 83 coordinates 608100, 4536000; 609700, 4536000; 661600, 4495200. (E, N): 635000, 4555400; 633500, 610300, 4535500; 610500, 4535000; (11) Subunit 1H: Shasta County, 4557100; 633000, 4558400; 631100, 610600, 4534600; 610500, 4533700; California. 4560000; 630400, 4560200; 627700, 610800, 4532700; 612400, 4531100; (i) From USGS 1:24,000 quadrangle 4561300; 626000, 4561600; 626000, 612600, 4530600; returning to 611800, maps Old Station and West Prospect 4562200; 626200, 4562900; 625700, 4528900. Peak, California, land bounded by the 4564200; 626100, 4565000; 627100, (8) Subunit 1E: Shasta County, following UTM 10 NAD 83 coordinates 4566500; 627900, 4567000; 628900, California. (E, N): 631700, 4490800; 631300, 4567000; 629500, 4566700; 630000, (i) From USGS 1:24,000 quadrangle 4491000; 630900, 4491600; 630300, 4566600; 630300, 4566300; 630600, maps Murken Bench and Old Station, 4491600; 630000, 4491600; 629800, 4565700; 630800, 4565600; 630900, California, land bounded by the 4491900; 629800, 4492700; 629900, 4564900; 630600, 4563700; 630300, following UTM 10 NAD 83 coordinates 4493100; 629300, 4493500; 629100, 4563500; 629900, 4563400; 630000, (E, N): 634400, 4509200; 634000, 4493700; 629300, 4494200; 629500, 4563000; 630300, 4562500; 630500, 4510000; 633800, 4510700; 634100, 4494700; 629400, 4494800; 629400, 4562700; 630800, 4562700; 631100, 4510800; 634100, 4512300; 633600, 4495200; 629700, 4495500; 630500, 4562600; 631400, 4562300; 632200, 4512700; 633500, 4513000; 633600, 4495700; 630500, 4496500; 631700, 4562100; 632600, 4561700; 632900, 4513000; 633800, 4513100; 633900, 4497100; 631700, 4497600; 631800, 4561700; 633200, 4561900; 633600, 4513400; 634100, 4513500; 634400, 4498000; 631900, 4498200; 632000, 4561800; 633900, 4561800; 634200, 4513200; 634700, 4513200; 635000, 4498400; 632100, 4498400; 632400, 4561500; 634500, 4561300; 634600, 4513400; 635800, 4513400; 636000, 4498400; 633900, 4497900; 634300, 4560900; 635000, 4560700; 635100, 4513100; 636100, 4512800; 636200, 4496700; 634600, 4496000; 634700, 4561000; 635300, 4561300; 635400, 4512700; 636500, 4512700; 635900, 4495800; 635100, 4495200; 635400, 4561600; 637300, 4560000; 637400, 4512200; 635900, 4510600; 636300, 4494700; 635600, 4494500; 635500,

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4493900; 635400, 4493400; 635600, 4486500; 560100, 4486500; 560300, 4469000; 573100, 4469400; 572900, 4492800; 635700, 4492500; 635600, 4485800; 560400, 4485600; 560600, 4469600; 572600, 4469600; 571800, 4492400; 634500, 4492400; 633800, 4485300; 560700, 4485400; 560700, 4468800; 571400, 4468100; 570700, 4492600; 632800, 4492600; 632400, 4486500; 560800, 4486700; 561000, 4467600; 570300, 4467700; 570300, 4492300; 632700, 4491800; 632800, 4486900; 561200, 4487000; 561300, 4467900; 570700, 4469000; 570700, 4491400; 632000, 4490900; and 631700, 4487600; 561600, 4487900; 562000, 4469400; 569900, 4470200; 569600, 4490800. 4487900; 562500, 4487400; 562700, 4470200; 569300, 4470200; 569000, (12) Subunit 1I: Plumas County, 4487100; 562900, 4487200; 563200, 4470600; 569000, 4471300; 569400, California. 4487200; 563300, 4487000; 563300, 4472000; 569500, 4472400; 569900, (i) From USGS 1:24,000 quadrangle 4486700; 563800, 4486400; 564300, 4472400; 570400, 4472300; 572100, map Almanor, California, land bounded 4484700; 564300, 4484400; 564700, 4472800; 572700, 4472500; 574100, by the following UTM 10 NAD 83 4483800; 564900, 4483600; 564900, 4473200; 575100, 4473200; 575600, coordinates (E, N): 655400, 4452100; 4483400; 564500, 4483000; 564500, 4473500; 576000, 4473900; 576600, 655000, 4452100; 654900, 4452500; 4482800; 564600, 4482700; 564600, 4473900; 577300, 4473900; 577700, 654400, 4452700; 654100, 4453000; 4482400; 564400, 4482100; 564500, 4474200; 578600, 4474200; 579300, 653900, 4453200; 653700, 4453200; 4481700; 564500, 4481000; returning to 4474400; 580000, 4474400; 580600, 653400, 4453000; 652600, 4453000; 564200, 4480800. 4474700; 581900, 4474700; 582400, 652300, 4453500; 651900, 4453700; (15) Subunit 2C: Shasta County, 4475300; 583000, 4475400; 583200, 651600, 4454400; 651600, 4454700; California. 4475400; 583700, 4475000; 584200, 652000, 4455400; 652400, 4455500; (i) From USGS 1:24,000 quadrangle 4475200; 584600, 4475200; 585400, 652700, 4455700; 653200, 4455300; maps Balls Ferry and Palo Cedro, 4474500; 586000, 4473600; 586100, 653000, 4455100; 653000, 4454800; California, land bounded by the 4473400; 585800, 4472600; 585500, 653300, 4454400; 653500, 4454100; following UTM 10 NAD 83 coordinates 4472100; 584800, 4471900; 584500, 653900, 4453900; 654500, 4453700; (E, N): 566900, 4477300; 566700, 4471600; 584500, 4471400; 584700, 654900, 4453400; 655300, 4452900; 4477300; 566100, 4478200; 565900, 4471100; 584700, 4470800; 584500, 655400, 4452600; returning to 655400, 4478900; 565500, 4479200; 565500, 4470500; 583400, 4469700; 583100, 4452100. 4479300; 565600, 4479600; 565300, 4469400; 582600, 4468500; 582600, (13) Subunit 2A: Shasta County, 4479700; 565300, 4479900; 565400, 4467600; 582700, 4466900; 582700, California. 4480200; 566100, 4480400; 566100, 4466700; 581900, 4465800; 581000, (i) From USGS 1:24,000 quadrangle 4480700; 565700, 4480800; 565700, 4465500; 580600, 4465200; 580400, map Enterprise, California, land 4481000; 565700, 4481300; 565700, 4464000; 580200, 4463300; 578900, bounded by the following UTM 10 NAD 4481700; 565500, 4482500; 565100, 4462700; 578500, 4462300; 578100, 83 coordinates (E, N): 558800, 4488900; 4482600; 564900, 4482900; 564900, 4462000; 577800, 4460900; 577700, 558500, 4488900; 557900, 4489000; 4483100; 565000, 4483300; 565400, 4460000; 576700, 4459300; 576600, 557900, 4489900; 558000, 4490000; 4483800; 565700, 4484900; 566400, 4458800; 576800, 4458300; 576800, 558000, 4490500; 557900, 4490800; 4485400; 567400, 4485000; 568100, 4457100; 576400, 4456700; 575500, 557900, 4491800; 558400, 4491800; 4483800; 568100, 4483300; 568400, 4456800; 574900, 4456800; 574100, 558500, 4491700; 558900, 4491600; 4483000; 568400, 4482100; 568200, 4455900; 573500, 4455600; 572300, 559100, 4491300; 559100, 4490700; 4481600; 567500, 4481300; 567500, 4455300; 572000, 4455300; 571600, 559000, 4490600; 559000, 4490400; 4480200; 567700, 4479400; 567700, 4455600; 571400, 4455400; 571100, 559200, 4490200; 559200, 4490000; 4478400; 567500, 4477800; returning to 4454900; 570600, 4454900; returning to 559400, 4489800; 559400, 4489300; 566900, 4477300. 570200, 4454800. 559200, 4489000; returning to 558800, (16) Unit 3: Shasta and Tehama (17) Unit 4: Tehama and Butte 4488900. Counties, California. counties, California. (14) Subunit 2B: Shasta County, (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle California. maps Balls Ferry, Bend, Dales, Red Bluff maps Acorn Hollow, Foster Island, Los (i) From USGS 1:24,000 quadrangle East, Shingletown, and Tuscan Buttes Molinos, Nord, Richardson Springs NW, maps Balls Ferry, Cottonwood, NE, California, land bounded by the and Vina, California, land bounded by Enterprise, and Palo Cedro, California, following UTM 10 NAD 83 coordinates the following UTM 10 NAD 83 land bounded by the following UTM 10 (E, N): 570200, 4454800; 570200, coordinates (E, N): 583100, 4413100; NAD 83 coordinates (E, N): 564200, 4455000; 570600, 4455900; 570000, 582900, 4413400; 582900, 4415900; 4480800; 564000, 4480800; 563600, 4456100; 569500, 4456300; 569300, 582000, 4418300; 581800, 4419200; 4480900; 563300, 4481000; 563100, 4456500; 568900, 4456500; 568600, 582000, 4419500; 581400, 4420000; 4480900; 562900, 4480900; 562500, 4456500; 568000, 4456800; 567900, 581400, 4420400; 581800, 4420700; 4481200; 562400, 4481500; 562400, 4457100; 567900, 4458000; 568400, 581600, 4421000; 583200, 4422600; 4481700; 562300, 4482400; 562000, 4458800; 569100, 4459800; 569600, 583500, 4423600; 585200, 4424500; 4482500; 561900, 4482800; 561800, 4460500; 569500, 4460800; 569000, 584900, 4424900; 582900, 4424300; 4483300; 561500, 4483700; 561000, 4460600; 568300, 4460700; 567500, 581300, 4422800; 581000, 4422600; 4484000; 560900, 4483900; 560900, 4460700; 566800, 4460000; 566400, 580500, 4422800; 579800, 4424400; 4483500; 560500, 4482600; 560100, 4460000; 565900, 4461100; 565800, 579500, 4425400; 580300, 4426100; 4482500; 559900, 4482000; 559400, 4461400; 565800, 4461700; 566000, 581700, 4427000; 583400, 4427100; 4482000; 558900, 4482400; 558900, 4462000; 565800, 4462300; 565300, 584000, 4427200; 585000, 4428300; 4482900; 558900, 4483600; 558300, 4463200; 566400, 4464000; 566700, 586700, 4429000; 588800, 4430200; 4483600; 558200, 4483900; 558200, 4464200; 566800, 4464100; 567600, 589500, 4429500; 589500, 4428600; 4484500; 558000, 4484800; 558000, 4463400; 568300, 4463200; 569800, 589500, 4428000; 589800, 4427100; 4485100; 558000, 4485300; 557800, 4463200; 570600, 4463900; 570800, 590500, 4426400; 590500, 4425300; 4485600; 557600, 4485900; 557300, 4464300; 572000, 4465200; 572000, 591200, 4424400; 591500, 4423300; 4486100; 557300, 4487400; 559200, 4466300; 572100, 4466600; 572800, 591600, 4422100; 590900, 4420900; 4487400; 559300, 4486800; 559800, 4467300; 573500, 4468600; 573400, 590700, 4419800; 588000, 4417000;

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587500, 4416400; 587200, 4415500; (20) Unit 6: Sacramento County, 4271100; 655500, 4271100; 655800, 587200, 4414000; 586400, 4413800; California. 4270900; 656000, 4270900; 656200, 586200, 4413600; 586200, 4413400; (i) From USGS 1:24,000 quadrangle 4271300; 656300, 4271300; 656500, 584200, 4413400; returning to 583100, maps Buffalo Creek, Carmichael, Elk 4271400; 656600, 4271400; 656600, 4413100. Grove, and Sloughhouse, California, 4271000; 656900, 4270800; 657300, (18) Subunit 5A: Lake County, land bounded by the following UTM 10 4270800; 657300, 4271400; 657500, California. NAD 83 coordinates (E, N): 650200, 4271500; 657800, 4271400; 658000, (i) From USGS 1:24,000 quadrangle 4257200; 650200, 4258300; 649600, 4271300; 658900, 4271300; 658900, maps Kelseyville and The Geysers, 4271000; 659100, 4271000; 659200, California, land bounded by the 4258300; 649600, 4257400; 649400, 4270900; 659200, 4270800; 659100, following UTM 10 NAD 83 coordinates 4257400; 649400, 4259000; 649100, 4269300; 659700, 4268900; 659700, (E, N): 520000, 4302900; 519600, 4259000; 649100, 4258500; 648500, 4302900; 519200, 4303200; 518600, 4258500; 648500, 4257400; 648200, 4268000; 659500, 4267000; 659300, 4303600; 518400, 4304000; 517700, 4257400; 648100, 4258300; 647700, 4266700; 659000, 4266400; 658800, 4304500; 517700, 4305500; 518000, 4258600; 647700, 4258900; 647900, 4265100; 658000, 4265500; 657600, 4305800; 518900, 4305800; 519400, 4258900; 648500, 4259400; 648500, 4265000; 657500, 4264300; 657900, 4305600; 519400, 4305200; 520600, 4260600; 647000, 4260600; 647000, 4263900; 657700, 4263600; 657200, 4304700; 520700, 4304400; 521200, 4261200; 647300, 4262300; 648400, 4263600; 657200, 4263100; 657600, 4303900; 521200, 4303500; 520900, 4262300; 648400, 4264000; 649000, 4263000; 657700, 4262900; 657700, 4303400; returning to 520000, 4302900. 4264500; 649500, 4264500; 650200, 4262800; 657400, 4262700; 656700, (19) Subunit 5B: Lake County, 4264200; 650400, 4264200; 650400, 4262700; 656500, 4262700; 655400, California. 4264600; 649900, 4264700; 649900, 4263400; 654400, 4262200; 655500, (i) From USGS 1:24,000 quadrangle 4265000; 648700, 4265000; 648700, 4261500; 655500, 4261100; 655200, map Middletown, California, land 4265300; 647900, 4265300; 647900, 4260800; 655200, 4260700; 654900, bounded by the following UTM 10 NAD 4265700; 647100, 4265200; 646700, 4260400; 653500, 4261300; 653200, 83 coordinates (E, N): 540700, 4298300; 4265200; 646700, 4265400; 646900, 4261000; 653100, 4262300; 652800, 540200, 4298400; 539100, 4299100; 4265900; 647000, 4266200; 646800, 4262300; 652800, 4261400; 652600, 538800, 4299200; 538400, 4299200; 4266400; 646800, 4266700; 647000, 4261300; 652300, 4261400; 651700, 538100, 4299500; 538300, 4300200; 4267200; 647200, 4267100; 647400, 4261800; 651600, 4262100; 650700, 4266300; 647500, 4266300; 647700, 537900, 4300700; 537400, 4300600; 4262100; 650700, 4261800; 651100, 4267000; 649200, 4267100; 649200, 536900, 4299900; 536300, 4299700; 4261700; 651200, 4261400; 651200, 4266700; 651200, 4266600; 651500, 536000, 4299700; 535100, 4300400; 4260600; 651000, 4260400; 650400, 4266400; 652400, 4266900; 652400, 535000, 4300800; 535000, 4301200; 4260400; 650400, 4259300; 651600, 535100, 4301800; 535300, 4302200; 4267300; 652000, 4267700; 652000, 4259300; 651600, 4259100; returning to 535700, 4302400; 536100, 4302400; 4267800; 652800, 4268900; 653000, 650200, 4257200. 536900, 4302300; 538700, 4301200; 4269400; 652500, 4270300; 652600, 539100, 4300600; 540000, 4300000; 4270400; 652700, 4270500; 653100, (21) Map follows of all critical habitat 540700, 4299700; 541000, 4299300; 4270500; 653400, 4270800; 653600, units for Orcuttia tenuis (slender Orcutt 541100, 4298700; returning to 540700, 4270800; 653800, 4270400; 654400, grass). 4298300. 4270800; 654800, 4270900; 655200, BILLING CODE 4310–55–P

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BILLING CODE 4310–55–C (1) Critical habitat units are depicted (2) The primary constituent elements Family Poaceae: Orcuttia viscida for Sacramento and Amador counties, of critical habitat for Orcuttia viscida are (Sacramento Orcutt Grass). California, on the map below. the habitat components that provide:

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00143 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.012 60026 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

(i) Vernal pools, swales, and other 4265000; 648700, 4265000; 648700, 664900, 4244800; 664900, 4246500; ephemeral wetlands and depressions of 4265300; 647900, 4265300; 647900, 664400, 4246500; 663900, 4246700; appropriate sizes and depths and the 4265700; 647100, 4265200; 646700, 662500, 4246300; 661600, 4246300; adjacent upland margins of these 4265200; 646700, 4265400; 646900, 661500, 4246700; 661500, 4246900; depressions that sustain Orcuttia viscida 4265900; 647000, 4266200; 646800, 661800, 4247000; 662000, 4247300; germination, growth and reproduction, 4266400; 646800, 4266700; 647000, 661800, 4247500; 661500, 4247300; including but not limited to vernal 4267200; 647200, 4267100; 647400, 661100, 4247100; 659200, 4247100; pools on high terrace landforms on 4266300; 647500, 4266300; 647700, 659200, 4247300; 659100, 4247500; acidic soils such as Red Bluff, Redding, 4267000; 649200, 4267100; 649200, 659000, 4247700; 659000, 4248000; and Corning soil series. These habitats 4266700; 651200, 4266600; 651500, 659100, 4248300; 658400, 4248300; typically become inundated during 4266400; 652400, 4266900; 652400, 658400, 4247100; 657800, 4247100; winter rains, but are dry during the 4267300; 652000, 4267700; 652000, 657800, 4247500; 656800, 4247400; summer and do not necessarily fill with 4267800; 652800, 4268900; 653000, 656400, 4248300; 656200, 4248300; water every year; and 4269400; 652500, 4270300; 652600, 656100, 4248000; 656000, 4247800; (ii) The associated watershed(s) and 4270400; 652700, 4270500; 653100, 655900, 4247700; 655600, 4247600; hydrologic features, including the pool 4270500; 653400, 4270800; 653600, 655300, 4247600; 655300, 4247200; basin, swales, and surrounding uplands 4270800; 653800, 4270400; 654400, 654700, 4247200; 654700, 4249000; (which may vary in extent depending on 4270800; 654800, 4270900; 655200, 655800, 4249000; 656300, 4249700; pool size and depth, soil type and 4271100; 655500, 4271100; 655800, 656600, 4249500; 657200, 4250200; depth, hardpan or claypan type and 4270900; 656000, 4270900; 656200, extent, topography, and climate) that 4271300; 656300, 4271300; 656500, 656700, 4251100; 657700, 4251100; contribute to the filling and drying of 4271400; 656600, 4271400; 656600, 658700, 4252500; 659500, 4252500; the vernal pool or ephemeral wetland, 4271000; 656900, 4270800; 657300, 659600, 4252100; 659900, 4252200; and that maintain suitable periods of 4270800; 657300, 4271400; 657500, 660500, 4251500; 660600, 4250500; pool inundation, water quality, and soil 4271500; 657800, 4271400; 658000, 661700, 4251200; 662400, 4252100; moisture for Orcuttia viscida 4271300; 658900, 4271300; 658900, 662800, 4252300; 663200, 4252300; germination, growth and reproduction, 4271000; 659100, 4271000; 659200, 663400, 4252700; 663800, 4253700; and dispersal, but not necessarily every 4270900; 659200, 4270800; 659100, 664900, 4253700; 665800, 4254500; year. 4269300; 659700, 4268900; 659700, 666200, 4254600; 667600, 4254500; (3) Critical habitat does not include 4268000; 659500, 4267000; 659300, 668000, 4255000; 668900, 4255600; existing man-made features and 4266700; 659000, 4266400; 658800, 669300, 4255400; 670600, 4255800; structures, such as buildings, roads, 4265100; 658000, 4265500; 657600, 671500, 4256400; 671700, 4256000; aquaducts, railroads, airport runways 4265000; 657500, 4264300; 657900, 671900, 4256000; 672500, 4256200; and buildings, other paved areas, lawns, 4263900; 657700, 4263600; 657200, 672700, 4256400; 673400, 4256400; and other urban landscaped areas not 4263600; 657200, 4263100; 657600, 673500, 4256300; 673100, 4255300; containing one or more of the primary 4263000; 657700, 4262900; 657700, 673100, 4254900; 673800, 4254900; consituent elements. 4262800; 657400, 4262700; 656700, 674000, 4254600; 674000, 4254400; (4) Unit 1: Sacramento County, 4262700; 656500, 4262700; 655400, 674500, 4254000; 674500, 4253700; California. 4263400; 654400, 4262200; 655500, 674100, 4253500; 674100, 4252900; (i) From USGS 1:24,000 quadrangle 4261500; 655500, 4261100; 655200, 674300, 4252300; 674500, 4251900; map Folsom, California, land bounded 4260800; 655200, 4260700; 654900, 674500, 4251600; 673400, 4251500; by the following UTM 10 NAD 83 4260400; 653500, 4261300; 653200, 673300, 4251400; 673300, 4251200; coordinates (E, N): 655300, 4279300; 4261000; 653100, 4262300; 652800, 673900, 4251000; 674000, 4250500; 654900, 4279400; 654900, 4279800; 4262300; 652800, 4261400; 652600, 674300, 4250000; 674300, 4249800; 655100, 4279800; 655200, 4280200; 4261300; 652300, 4261400; 651700, 674200, 4249700; 673900, 4249700; 655400, 4280200; 655500, 4280000; 4261800; 651600, 4262100; 650700, 673600, 4249900; 672500, 4249900; 655300, 4279800; returning to 655300, 4262100; 650700, 4261800; 651100, 671900, 4250200; 671300, 4250200; 4279300. 4261700; 651200, 4261400; 651200, 671100, 4250500; 671000, 4250500; (5) Unit 2: Sacramento County, 4260600; 651000, 4260400; 650400, California. 671000, 4249800; 670700, 4249800; 4260400; 650400, 4259300; 651600, 670700, 4249500; 670900, 4249300; (i) From USGS 1:24,000 quadrangle 4259300; 651600, 4259100; returning to 670900, 4249100; 670900, 4248500; maps Buffalo Creek, Carmichael, Elk 650200, 4257200. Grove, and Sloughhouse, California, (6) Unit 3: Sacramento and Amador 670500, 4248300; 670500, 4248000; land bounded by the following UTM 10 counties, California. 670100, 4248000; 670100, 4247800; NAD 83 coordinates (E, N): 650200, (i) From USGS 1:24,000 quadrangle 670500, 4247500; 671100, 4247500; 4257200; 650200, 4258300; 649600, maps Carbondale, Clay, Goose Creek, 671600, 4247700; 671800, 4247600; 4258300; 649600, 4257400; 649400, and Sloughhouse, California, land 671900, 4247300; 671900, 4247100; 4257400; 649400, 4259000; 649100, bounded by the following UTM 10 NAD 671500, 4246800; 671800, 4246200; 4259000; 649100, 4258500; 648500, 83 coordinates (E, N): 664600, 4238700; 671800, 4245800; 670800, 4245000; 4258500; 648500, 4257400; 648200, 663800, 4238700; 662900, 4239700; 669900, 4244100; 669800, 4243700; 4257400; 648100, 4258300; 647700, 661300, 4238900; 660000, 4239200; 669500, 4243500; 669200, 4243400; 4258600; 647700, 4258900; 647900, 659500, 4239200; 659400, 4239600; 669100, 4242900; 668500, 4242100; 4258900; 648500, 4259400; 648500, 659500, 4239800; 661300, 4239800; 667900, 4242000; 667400, 4241600; 4260600; 647000, 4260600; 647000, 661300, 4239900; 661500, 4239900; 666800, 4241200; 666700, 4241200; 4261200; 647300, 4262300; 648400, 661500, 4241600; 662900, 4241600; 666600, 4240900; 666600, 4240700; 4262300; 648400, 4264000; 649000, 662900, 4243100; 663400, 4243100; 666800, 4240500; 666600, 4240100; 4264500; 649500, 4264500; 650200, 663400, 4243800; 662500, 4243900; 666400, 4240100; 665700, 4240100; 4264200; 650400, 4264200; 650400, 662500, 4244800; 663700, 4244800; 665700, 4240000; 664600, 4240000; 4264600; 649900, 4264700; 649900, 664400, 4244300; 664600, 4244700; returning to 664600, 4238700.

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00144 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60027

(7) Map follows of all critical habitat units for Orcuttia viscida (Sacramento Orcutt Grass). BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00145 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60028 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C (1) Critical habitat units are depicted Mariposa and Madera counties, Family Poaceae: Tuctoria greenei for Shasta, Tehama, Butte, Glenn, California, on the map below. (Greene’s Tuctoria). Colusa, Stanislaus, Tuolumne, Merced,

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00146 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.013 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60029

(2) The primary constituent elements 584000, 4427200; 585000, 4428300; 572900, 4358200; returning to 572900, of critical habitat for Tuctoria greenei 586700, 4429000; 588800, 4430200; 4357400. are the habitat components that provide: 589500, 4429500; 589500, 4428600; (9) Unit 6: Stanislaus and Tuolumne (i) Vernal pools, swales, and other 589500, 4428000; 589800, 4427100; counties, California. ephemeral wetlands and depressions of 590500, 4426400; 590500, 4425300; (i) From USGS 1:24,000 quadrangle appropriate sizes and depths and the 591200, 4424400; 591500, 4423300; maps Cooperstown, Keystone, Knights adjacent upland margins of these 591600, 4422100; 590900, 4420900; Ferry, La Grange, Oakdale, Paulsell, and depressions that sustain Tuctoria 590700, 4419800; 588000, 4417000; Waterford, California, land bounded by greenei germination, growth and 587500, 4416400; 587200, 4415500; the following UTM 10 NAD 83 reproduction, including but not limited 587200, 4414000; 586400, 4413800; coordinates (E, N): 718900, 4168000; to Northern Claypan, Northern Hardpan 586200, 4413600; 586200, 4413400; 718700, 4168000; 717900, 4168500; and Northern Basalt flow vernal pools, 584200, 4413400; returning to 583100, 715500, 4168200; 715400, 4168300; that typically become inundated during 4413100. 712500, 4168900; 710900, 4168400; winter rains, but are dry during the (6) Unit 3: Butte County, California. 710400, 4168500; 710500, 4169100; summer and do not necessarily fill with (i) From USGS 1:24,000 quadrangle 709300, 4169100; 709100, 4169500; water every year; and map Hamlin Canyon, California, land 709100, 4169700; 708900, 4169700; (ii) The associated watershed(s) and bounded by the following UTM 10 NAD 708800, 4169900; 708700, 4169900; hydrologic features, including the pool 83 coordinates (E, N): 611100, 4387700; 708600, 4169800; 708500, 4169900; basin, swales, and surrounding uplands 610400, 4388500; 610300, 4388800; 708400, 4170000; 708700, 4170200; (which may vary in extent depending on 609200, 4389800; 609100, 4390100; 708800, 4170300; 708900, 4170400; pool size and depth, soil type and 610200, 4391100; 610300, 4391400; 709100, 4170500; 709200, 4170600; depth, hardpan or claypan type and 611100, 4391400; 611500, 4391300; 709400, 4170600; 709400, 4170800; extent, topography, and climate) that 612500, 4390200; 613300, 4389600; 709300, 4170800; 709200, 4170900; contribute to the filling and drying of 613300, 4388900; 613200, 4388400; 709100, 4170800; 708800, 4170700; the vernal pool or ephemeral wetland, 612800, 4388000; 612100, 4387900; 708800, 4170600; 708500, 4170500; and that maintain suitable periods of 611500, 4387900; returning to 611100, 708400, 4170300; 708100, 4170200; pool inundation, water quality, and soil 4387700. 707900, 4170200; 707900, 4170300; moisture for Tuctoria greenei (7) Unit 4: Butte County, California. 708100, 4170500; 708200, 4170500; germination, growth and reproduction, (i) From USGS 1:24,000 quadrangle 708200, 4170600; 708000, 4170600; and dispersal, but not necessarily every maps Biggs and Shippee, California, 708200, 4170800; 708200, 4170900; year. land bounded by the following UTM 10 708100, 4170900; 707900, 4170700; (3) Critical habitat does not include NAD 83 coordinates (E, N): 612800, 707700, 4170700; 707700, 4170800; existing man-made features and 4370600; 612100, 4370700; 612100, 707600, 4170900; 707400, 4170900; structures, such as buildings, roads, 4371500; 611900, 4371900; 611100, 707100, 4171100; 707100, 4171200; aqueducts, railroads, airport runways 4372000; 611100, 4372200; 611200, 707200, 4171300; 707300, 4171200; and buildings, other paved areas, lawns, 4372600; 611300, 4373100; 612700, 707500, 4171300; 707800, 4171600; and other urban landscaped areas not 4373100; 612900, 4372400; 612900, 707900, 4171600; 708100, 4171600; containing one or more of the primary 4370900; returning to 612800, 4370600. 708200, 4171700; 708100, 4171800; constituent elements. (8) Unit 5: Glenn and Colusa counties, 708100, 4171900; 708300, 4171900; (4) Unit 1: Shasta County, California. California. 708300, 4172100; 708400, 4172100; (i) From USGS 1:24,000 quadrangle (i) From USGS 1:24,000 quadrangle 708500, 4172200; 708500, 4172300; map Murken Bench, California, land maps Logandale, Maxwell, Moulton 708700, 4172400; 708800, 4172500; bounded by the following UTM 10 NAD Weir, and Princeton, California, land 708800, 4172600; 708700, 4172700; 83 coordinates (E, N): 631900, 4520300; bounded by the following UTM 10 NAD 708500, 4172700; 708400, 4172800; 631500, 4520300; 630700, 4520600; 83 coordinates (E, N): 572900, 4357400; 708300, 4172700; 708200, 4172700; 630000, 4521000; 628900, 4522800; 571200, 4357400; 571200, 4358200; 708100, 4172600; 708000, 4172500; 629200, 4523500; 629600, 4523900; 570400, 4358200; 570400, 4359000; 707900, 4172500; 707800, 4172700; 631000, 4524100; 631800, 4523500; 569600, 4359000; 569500, 4360500; 707600, 4172600; 707400, 4172500; 632700, 4522700; 632300, 4521000; 569300, 4362200; 569500, 4363300; 707400, 4172600; 707200, 4172700; returning to 631900, 4520300. 569500, 4367200; 570000, 4367200; 707100, 4172300; 707000, 4172200; (5) Unit 2: Tehama and Butte 569900, 4368400; 570300, 4368400; 706700, 4172200; 706700, 4172300; counties, California. 571000, 4367600; 571000, 4367800; 706500, 4172300; 706400, 4172300; (i) From USGS 1:24,000 quadrangle 570700, 4368500; 570900, 4368800; 706400, 4172400; 706200, 4172600; maps Acorn Hollow, Foster Island, Los 571500, 4368800; 571900, 4368300; 706300, 4172700; 706400, 4172800; Molinos, Nord, Richardson Springs NW, 571900, 4367600; 572100, 4367600; 706300, 4172800; 706200, 4172800; and Vina, California, land bounded by 572400, 4368100; 572400, 4368400; 706100, 4172900; 705900, 4173100; the following UTM 10 NAD 83 572600, 4368900; 572800, 4368900; 705800, 4173300; 705800, 4173500; coordinates (E, N): 583100, 4413100; 573000, 4368100; 573400, 4368000; 706000, 4173800; 705900, 4173900; 582900, 4413400; 582900, 4415900; 573800, 4367600; 574100, 4367300; 705800, 4174100; 705700, 4174200; 582000, 4418300; 581800, 4419200; 574400, 4367200; 574500, 4366400; 705500, 4174200; 705400, 4174100; 582000, 4419500; 581400, 4420000; 574900, 4366400; 574900, 4365600; 705400, 4173700; 705300, 4173500; 581400, 4420400; 581800, 4420700; 574700, 4365500; 574400, 4364100; 705200, 4173200; 705100, 4173200; 581600, 4421000; 583200, 4422600; 575200, 4363900; 575600, 4363600; 705100, 4172600; 704900, 4172400; 583500, 4423600; 585200, 4424500; 575100, 4362400; 575600, 4361400; 704800, 4172100; 704600, 4172100; 584900, 4424900; 582900, 4424300; 575100, 4360700; 576000, 4359600; 704500, 4171900; 704400, 4171800; 581300, 4422800; 581000, 4422600; 575500, 4358900; 575700, 4358300; 704500, 4171600; 704600, 4171400; 580500, 4422800; 579800, 4424400; 575900, 4357700; 575300, 4357800; 704700, 4171500; 704900, 4171200; 579500, 4425400; 580300, 4426100; 575000, 4357700; 574700, 4357700; 704700, 4171100; 704900, 4171000; 581700, 4427000; 583400, 4427100; 573600, 4357800; 573500, 4358200; 704800, 4170900; 704600, 4170900;

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704600, 4170700; 704800, 4170200; 4115400; 752000, 4115800; 751900, 4154200; 738300, 4153300; 739000, 705300, 4170200; 705800, 4169700; 4116000; 751400, 4116100; 751100, 4152800; 739100, 4152200; 740200, 705900, 4169300; 706000, 4168900; 4116300; 751100, 4116700; 750700, 4151800; 740800, 4151500; 740800, 706000, 4168800; 705400, 4168900; 4116700; 749900, 4116500; 746800, 4150300; 741100, 4149900; 741700, 704400, 4169000; 703000, 4168900; 4116500; 744700, 4116500; 744600, 4149400; 742100, 4148500; 742100, 702200, 4168200; 700500, 4168400; 4117600; 743600, 4117800; 743300, 4147100; 743400, 4146100; 744000, 700400, 4169700; 700100, 4169800; 4118600; 742800, 4118600; 742800, 4145600; 744400, 4144600; 744300, 700100, 4170700; 699500, 4171100; 4118900; 742300, 4119000; 742300, 4143900; 743900, 4142700; 744000, 698500, 4171200; 698500, 4172000; 4119800; 742900, 4119900; 743300, 4142000; 744200, 4141700; 745500, 697800, 4172300; 697100, 4171200; 4120600; 745500, 4120700; 745800, 4140300; 746100, 4139500; 746800, 696000, 4171200; 694000, 4171200; 4121600; 745400, 4121600; 745400, 4138500; 747700, 4137700; 748500, 694000, 4172100; 694500, 4172100; 4121800; 746100, 4121800; 746200, 4135800; 748700, 4135100; 749500, 694500, 4174500; 696300, 4174500; 4122200; 747500, 4122400; 747500, 4134000; 750100, 4132800; 750700, 696300, 4175300; 697300, 4175300; 4123900; 747000, 4124700; 746900, 4131700; 751600, 4130500; 752000, 697300, 4176200; 697700, 4176200; 4125100; 743600, 4125000; 743600, 4130200; 752800, 4130100; 753300, 697700, 4179300; 696600, 4179300; 4127000; 742700, 4127000; 742600, 4130400; 753500, 4130400; 753900, 696400, 4180000; 695800, 4180000; 4126600; 742300, 4126300; 741700, 4130200; 754000, 4129300; 753400, 695500, 4179500; 695000, 4179300; 4126300; 741200, 4126800; 741200, 4128400; 753900, 4127700; 754400, 694400, 4179300; 694400, 4179800; 4128600; 740400, 4128600; 740400, 4127700; 754600, 4127400; 755300, 694800, 4180400; 694500, 4180800; 4130300; 739000, 4130300; 739000, 4128400; 755400, 4128400; 755600, 694500, 4181000; 694900, 4181400; 4130600; 738400, 4131100; 737500, 4127700; 756900, 4126400; 757800, 694500, 4181600; 694500, 4181900; 4131200; 737800, 4131700; 737700, 4125800; 758400, 4126300; 758500, 695100, 4182200; 696100, 4182200; 4132600; 737700, 4132900; 737100, 4126300; 758600, 4126000; 757900, 696200, 4181800; 695700, 4181600; 4132900; 737100, 4134200; 736700, 4125100; 757400, 4125100; 757800, 696300, 4180500; 697000, 4180100; 4134200; 736100, 4133900; 735600, 4124400; 757800, 4124000; 758200, 4124000; 758500, 4123600; 758800, 697400, 4180100; 697600, 4180400; 4133300; 734700, 4133300; 734700, 697600, 4182600; 700300, 4182600; 4123600; 759000, 4123900; 759300, 4133700; 734100, 4133900; 733100, 700300, 4183400; 699400, 4183400; 4123900; 759700, 4123500; 759700, 4133900; 733100, 4134600; 732700, 699400, 4184100; 700800, 4185100; 4123400; 759200, 4122900; 760300, 4134600; 732600, 4135000; 732300, 704100, 4186300; 705300, 4187700; 4121300; 761000, 4121000; 761300, 4135500; 730300, 4135400; 729900, 705700, 4187700; 706300, 4188200; 4120300; 762100, 4119400; thence south 4135700; 729900, 4136500; 726500, 706300, 4188800; 706700, 4190100; to x-coordinate 762100 on the 4136500; 726400, 4136100; 725900, 707300, 4190700; 707800, 4190700; Chowchilla River; thence southwest 4136100; 725900, 4135300; 725600, 708400, 4190000; 708700, 4190000; along the Chowchilla River to Ash 4135100; 725500, 4135100; 725300, 709200, 4189300; 709200, 4188600; Slough; thence southwest along Ash 4135500; 725100, 4135400; 725000, 710100, 4188200; 709900, 4186700; Slough to y-coordinate 4114900; thence 708900, 4185800; 708800, 4185000; 4135400; 725000, 4135600; 724800, west to the point of beginning at 709600, 4184200; 710300, 4183900; 4135700; 724600, 4135700; 724600, 751800, 4114900. 710300, 4182900; 711400, 4182100; 4134700; 724200, 4134700; 724200, (11) Unit 8: Madera County, 712400, 4182100; 713200, 4182000; 4135500; 723400, 4135500; 723400, California. 714100, 4182600; 715100, 4182600; 4135600; 722800, 4135600; 722800, (i) From USGS 1:24,000 quadrangle 715500, 4183400; 715800, 4183400; 4135000; 722600, 4135000; 722600, maps Daulton, Kismet, Raymond, and 716000, 4182700; 716900, 4182700; 4134700; 722500, 4134700; 722200, Raynor Creek, California, land bounded 717100, 4182500; 717100, 4182000; 4137900; 722800, 4137900; 722800, by the following UTM 10 NAD 83 716900, 4181300; 717200, 4180900; 4139300; 721900, 4139300; 721900, coordinates (E, N): 761900, 4100100; 717200, 4180600; 716900, 4179900; 4140200; 721000, 4140200; 721000, 761800, 4102500; 761700, 4105900; 717700, 4180100; 718500, 4180000; 4140900; 717800, 4140900; 717800, 762100, 4105900; 762900, 4106300; 718700, 4179200; 719300, 4178700; 4137700; 717100, 4137700; 717000, 763300, 4106200; 764100, 4106700; 719700, 4177600; 720300, 4177700; 4138200; 714500, 4140900; 714100, 764100, 4109200; 763400, 4109300; 720700, 4177700; 720800, 4176400; 4141300; 714100, 4142200; 713600, 763200, 4109800; 761500, 4109800; 721400, 4175900; 722200, 4175300; 4142400; 713200, 4143000; 713000, 761500, 4111300; 759800, 4111300; 722700, 4175200; 722800, 4173600; 4143900; 713100, 4144300; 713700, 759800, 4112200; 758300, 4112200; 723000, 4173500; 723200, 4173600; 4144600; 714500, 4145300; 714500, 758300, 4112800; 756600, 4112800; 723700, 4173600; 724000, 4173300; 4145700; 715800, 4145800; 717000, 756500, 4115300; 759700, 4115300; 724100, 4172300; 722800, 4172200; 4145800; 718000, 4145400; 718200, 759700, 4117100; 760400, 4117100; 721700, 4171200; 721400, 4169900; 4145900; 718200, 4147600; 719700, 760500, 4118000; 762100, 4118900; 720500, 4168700; returning to 718900, 4148400; 720600, 4148600; 720600, 762800, 4118000; 763300, 4117200; 4168000. 4149200; 719600, 4149200; 719600, 763500, 4117600; 763700, 4117600; (10) Unit 7: Merced, Mariposa and 4149800; 720300, 4149800; 721300, 764100, 4117300; 764500, 4115900; Madera counties, California. 4150700; 721700, 4150700; 724400, 765400, 4115900; 765400, 4116400; (i) From USGS 1:24,000 quadrangle 4153300; 725000, 4153500; 725500, 766100, 4116400; 766100, 4115800; maps Atwater, Haystack Mtn., Illinois 4154200; 725800, 4154800; 727200, 765900, 4114300; 766400, 4114200; Hill, Indian Gulch, Le Grand, Merced, 4155900; 727800, 4155900; 728500, thence south to UTM zone 11, land Merced Falls, Owens Reservoir, 4155600; 730200, 4155600; 731600, bounded by the following UTM 11 NAD Plainsburg, Planada, Raynor Creek, 4155500; 732400, 4155400; 732600, 83 coordinates (E, N): 233400, 4113000; Snelling, Winton, and Yosemite Lake, 4155200; 733200, 4154700; 734100, 233600, 4113000; 233900, 4112800; California, land bounded by the 4154900; 734600, 4154800; 735600, 234000, 4112300; 234300, 4112400; following UTM 10 NAD 83 coordinates 4156000; 735900, 4156000; 737100, 234700, 4112500; 235000, 4112400; (E, N): 751800, 4114900; 751600, 4155400; 737800, 4155000; 738200, 235200, 4112300; 235200, 4111800;

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235700, 4111400; 236400, 4111800; 238100, 4104300; 237100, 4104300; 766000, 4100200; returning to 761900, 236800, 4111300; 236400, 4110800; 237100, 4105800; 237000, 4106800; 4100100. 236400, 4109500; 237000, 4108700; 236000, 4107000; 235800, 4107100; (12) Map follows of all critical habitat 237600, 4108600; 238400, 4109300; 234900, 4107100; 234300, 4107200; units for Tuctoria greenei (Greene’s 241300, 4109300; 242100, 4108700; 233900, 4108200; 233300, 4108000; Tuctoria). 242100, 4107300; 240900, 4106000; thence south to UTM zone 10, land 239300, 4104100; 239300, 4104100; bounded by the following UTM 10 NAD BILLING CODE 4310–55–P 238900, 4104300; 238500, 4104600; 83 coordinates (E, N): 766800, 4100200;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00149 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60032 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00150 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.014 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60033

Family Poaceae: Tuctoria mucronata extent, topography, and climate) that and Elmira, California, land bounded by (Solano Grass). contribute to the filling and drying of the following UTM 10 NAD 83 (1) Critical habitat units are depicted the vernal pool or ephemeral wetland, coordinates (E, N): 600700, 4230600; for Solano and Yolo counties, and that maintain suitable periods of 600400, 4230900; 600400, 4231700; California, on the map below. pool inundation, water quality, and soil 601100, 4232300; 601200, 4233200; (2) The primary constituent elements moisture for Tuctoria mucronata 598400, 4233200; 598200, 4232100; of critical habitat for Tuctoria germination, growth and reproduction, 597800, 4231800; 597100, 4233200; mucronata are the habitat components and dispersal, but not necessarily every 595600, 4233800; 595400, 4234700; that provide: year. 595600, 4235500; 595600, 4236800; (i) Vernal pools, swales, and other (3) Critical habitat does not include 596500, 4237600; 596300, 4237700; ephemeral wetlands and depressions of existing man-made features and 595500, 4237100; 595200, 4237700; appropriate sizes and depths and the structures, such as buildings, roads, 595200, 4238200; 598800, 4238200; adjacent upland margins of these aqueducts, railroads, airport runways 598500, 4239100; 598000, 4239700; depressions that sustain Tuctoria and buildings, other paved areas, lawns, 598000, 4241000; 598800, 4241000; mucronata germination, growth and and other urban landscaped areas not 598800, 4240600; 600400, 4240600; reproduction, including but not limited containing one or more of the primary 602800, 4240600; 604300, 4239400; to Northern Claypan vernal pools constituent elements. 605200, 4240600; 605300, 4239700; (Sawyer and Keeler-Wolf 1995) on (4) Unit 1: Yolo County, California. 605500, 4239000; 605400, 4238300; saline-alkaline clay or silty clay in the (i) From USGS 1:24,000 quadrangle 604500, 4238100; 604500, 4237500; Pescadero soil series that typically maps Davis and Saxon, California, land 605200, 4237200; 605700, 4235200; become inundated during winter rains, bounded by the following UTM 10 NAD 605400, 4234900; 605000, 4233900; but are dry during the summer and do 83 coordinates (E, N): 615400, 4260700; 604600, 4233700; 604200, 4233300; not necessarily fill with water every 614500, 4260700; 614500, 4261500; 604100, 4232500; 603800, 4231500; year; and 614200, 4261500; 614200, 4261800; 602300, 4230800; 601400, 4230700; (ii) The associated watershed(s) and 614000, 4261800; 614000, 4262400; returning to 600700, 4230600. hydrologic features, including the pool 615400, 4262400; returning to 615400, basin, swales, and surrounding uplands 4260700. (6) Map follows of all critical habitat (which may vary in extent depending on (5) Unit 2: Solano County, California. units for Tuctoria mucronata (Solano pool size and depth, soil type and (i) From USGS 1:24,000 quadrangle Grass). depth, hardpan or claypan type and maps Birds Landing, Denverton, Dozier, BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00151 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60034 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

BILLING CODE 4310–55–C

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00152 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.015 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60035

Family Scrophulariaceae: Castilleja (5) Unit 2: Stanislaus and Tuolumne 4176900; 711500, 4177100; 711600, campestris ssp. succulenta (Succulent counties, California. 4178100; 711700, 4178700; 710600, Owl’s Clover). (i) From USGS 1:24,000 quadrangle 4178800; 710300, 4179200; 709900, (1) Critical habitat units are depicted maps Cooperstown, Keystone, Knights 4179500; 709500, 4179600; 709100, for San Joaquin, Sacramento, Stanislaus, Ferry, La Grange, and Paulsell, 4180800; 709200, 4182200; 709700, Tuolumne, Merced, Mariposa, Madera California, land bounded by the 4182700; 710300, 4182900; 711400, and Fresno Counties, California, on the following UTM 10 NAD 83 coordinates 4182100; 712400, 4182100; 713200, map below. (E, N): 710900, 4168400; 4182000; 714100, 4182600; 715100, (2) The primary constituent elements 710350.6875000 4168525; 710500, 4182600; 715500, 4183400; 715800, of critical habitat for Castilleja 4169100; 709300, 4169100; 709100, 4183400; 716000, 4182700; 716900, campestris ssp. succulenta are the 4169500; 709100, 4169700; 708900, 4182700; 717100, 4182500; 717100, habitat components that provide: 4169700; 708800, 4169900; 708700, 4182000; 716900, 4181300; 717200, (i) Vernal pools, swales, and other 4169900; 708600, 4169800; 708500, 4180900; 717200, 4180600; 716900, ephemeral wetlands and depressions of 4169900; 708400, 4170000; 708700, 4179900; 717700, 4180100; 718500, appropriate sizes and depths and the 4170200; 708800, 4170300; 708900, 4180000; 718700, 4179200; 719300, adjacent upland margins of these 4170400; 709100, 4170500; 709200, 4178700; 719700, 4177600; 720300, depressions that sustain Castilleja 4170600; 709400, 4170600; 709400, 4177700; 720700, 4177700; 720800, campestris ssp. succulenta germination, 4170800; 709300, 4170800; 709200, 4176400; 720500, 4175200; 719500, growth and reproduction, including but 4170900; 709100, 4170800; 708800, 4174100; 720700, 4173500; 720700, not limited to hardpan vernal pools on 4170700; 708800, 4170600; 708500, 4172500; 719800, 4171900; 717700, alluvial terraces and San Joaquin, 4170500; 708400, 4170300; 708100, 4170900; 717300, 4170700; 716800, Redding, Corning, Keyes, and Pentz 4170200; 707900, 4170200; 707900, 4171000; 716700, 4171800; 716500, soils series, among others, and northern 4170300; 708100, 4170500; 708200, 4171800; 716200, 4170900; 715500, basalt flow vernal pools on Hideaway 4170500; 708200, 4170600; 708000, 4170500; 714000, 4169800; 712500, soils series, that typically become 4170600; 708200, 4170800; 708200, 4168900; returning to 710900, 4168400. inundated during winter rains, but are (6) Subunit 3A: Merced and Mariposa 4170900; 708100, 4170900; 707900, dry during the summer and do not counties, California. 4170700; 707700, 4170700; 707700, necessarily fill with water every year; (i) From USGS 1:24,000 quadrangle 4170800; 707600, 4170900; 707400, and maps Merced Falls and Snelling, (ii) The associated watershed(s) and 4170900; 707100, 4171100; 707100, California, land bounded by the hydrologic features, including the pool 4171200; 707200, 4171300; 707300, following UTM 10 NAD 83 coordinates basin, swales, and surrounding uplands 4171200; 707500, 4171300; 707800, (E, N): 722500, 4155000; 722300, (which may vary in extent depending on 4171600; 707900, 4171600; 708100, 4155000; 722300, 4157400; 724200, pool size and depth, soil type and 4171600; 708200, 4171700; 708100, 4157400; 724100, 4160000; 724400, depth, hardpan or claypan type and 4171800; 708100, 4171900; 708300, 4160600; 730600, 4160700; 730500, extent, topography, and climate) that 4171900; 708300, 4172100; 708400, 4162200; 730800, 4162200; 731000, contribute to the filling and drying of 4172100; 708500, 4172200; 708500, 4162100; 731400, 4162100; 731600, the vernal pool or ephemeral wetland, 4172300; 708700, 4172400; 708800, 4162500; 731800, 4162500; 731900, and that maintain suitable periods of 4172500; 708800, 4172600; 708700, 4162400; 732100, 4162400; 732200, pool inundation, water quality, and soil 4172700; 708500, 4172700; 708400, 4162500; 732700, 4162700; 733000, moisture for Castilleja campestris ssp. 4172800; 708300, 4172700; 708200, 4162600; 733600, 4162100; 733700, succulenta germination, growth and 4172700; 708100, 4172600; 708000, 4161500; 733600, 4161000; 734600, reproduction, and dispersal, but not 4172500; 707900, 4172500; 707800, 4160400; 734800, 4160200; 734800, necessarily every year. 4172700; 707600, 4172600; 707400, 4159500; 734400, 4158700; 734300, (3) Critical habitat does not include 4172500; 707400, 4172600; 707200, 4158100; 734500, 4157900; 734700, existing man-made features and 4172700; 707100, 4172300; 707000, 4158000; 734900, 4158300; 735000, structures, such as buildings, roads, 4172200; 706700, 4172200; 706700, 4158800; 735500, 4158800; 735700, aqueducts, railroads, airport runways 4172300; 706500, 4172300; 706400, 4158600; 735600, 4158100; 736200, and buildings, other paved areas, lawns, 4172300; 706400, 4172400; 706200, 4157500; 736800, 4157300; 736900, and other urban landscaped areas not 4172600; 706300, 4172700; 706400, 4157100; 736900, 4156500; 736300, containing one or more of the primary 4172800; 706300, 4172800; 706200, 4156500; 736000, 4156300; 735500, constituent elements. 4172800; 706100, 4172900; 705900, 4156300; 734100, 4156900; 733400, (4) Unit 1: San Joaquin and 4173100; 705800, 4173300; 705800, 4157100; 731700, 4156900; 730900, Sacramento Counties, California. 4173500; 706000, 4173800; 705900, 4156500; 728900, 4156600; 727100, (i) From USGS 1:24,000 quadrangle 4173900; 705800, 4174100; 705700, 4156700; 726900, 4156400; 725900, maps Clay and Lockeford, California, 4174200; 705500, 4174200; 705400, 4156400; 723900, 4155300; 723300, land bounded by the following UTM 10 4174100; 705400, 4173700; 705300, 4155400; returning to 722500, 4155000. NAD 83 coordinates (E, N): 653700, 4173500; 705200, 4173200; 705100, (7) Subunit 3B: Merced and Mariposa 4232600; 653600, 4232600; 653500, 4174700; 705400, 4175400; 705000, counties, California. 4233600; 653600, 4234100; 654100, 4175900; 705300, 4176300; 705700, (i) From USGS 1:24,000 quadrangle 4234800; 655100, 4234800; 655500, 4176700; 705700, 4177000; 705700, maps Atwater, Haystack Mtn., Indian 4234500; 655900, 4234700; 657600, 4177700; 705200, 4177900; 705000, Gulch, Le Grand, Merced, Merced Falls, 4234700; 657900, 4235000; 658800, 4178100; 705400, 4178900; 706200, Owens Reservoir, Plainsburg, Planada, 4235200; 659000, 4234900; 660500, 4178400; 706600, 4177600; 707200, Snelling, Winton, and Yosemite Lake, 4235300; 661000, 4235300; 661200, 4177300; 707300, 4176800; 706800, California, land bounded by the 4234900; 660700, 4234400; 660000, 4176200; 706900, 4175800; 707600, following UTM 10 NAD 83 coordinates 4234300; 659600, 4233400; 656900, 4175800; 708000, 4176500; 708500, (E, N): 743600, 4125000; 743600, 4233400; 654100, 4233200; 654100, 4176400; 709800, 4176600; 710200, 4127000; 742700, 4127000; 742600, 4232700; returning to 653700, 4232600. 4176200; 710700, 4176600; 711200, 4126600; 742300, 4126300; 741700,

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4126300; 741200, 4126800; 741200, west to the point of beginning at743600, 4094900; 250500, 4094900; 250400, 4128600; 740400, 4128600; 740400, 4125000. 4092900; 245500, 4093000; 242300, 4130300; 739000, 4130300; 739000, (8) Unit 4: Madera, Merced and 4093100; 242300, 4095000; 242500, 4130600; 738400, 4131100; 737500, Fresno Counties, California. 4095100; 244000, 4095000; 244000, 4131200; 737800, 4131700; 737700, (i) From USGS 1:24,000 quadrangle 4096700; 244800, 4096600; 244900, 4132600; 737700, 4132900; 737100, maps Daulton, Friant, Gregg, Kismet, 4098200; 245700, 4098200; 245700, 4132900; 737100, 4134200; 736700, Lanes Bridge, Little Table Mtn., 4099800; 242500, 4100000; 242400, 4134200; 736100, 4133900; 735700, Millerton Lake West, Raymond, and 4095200; 242300, 4095200; 239500, 4133300; 734700, 4133300; 734700, Raynor Creek, California, land bounded 4095200; 239600, 4098400; 239700, 4133700; 734100, 4133900; 733100, by the following UTM 10 NAD 83 4100000; 240100, 4100000; 240200, 4133900; 733100, 4134600; 732700, coordinates (E, N): 766600, 4106700; 4100200; 240200, 4100400; 240200, 4134600; 732600, 4135000; 732300, 766500, 4107800; 765200, 4107800; 4100600; 240400, 4100700; 240600, 4135500; 730300, 4135400; 729900, 764700, 4108100; 764100, 4109200; 4100900; 240600, 4101200; 239700, 4135700; 729900, 4136500; 726500, 763400, 4109300; 763200, 4109800; 4102100; 239700, 4102200; 239900, 4136500; 726400, 4136100; 725900, 761500, 4109800; 761500, 4111300; 4102500; 239900, 4102700; 239800, 4136100; 725900, 4135300; 725600, 759800, 4111300; 759800, 4112500; 4102800; 239800, 4103000; 240000, 759300, 4112500; 759200, 4112300; 4135100; 725500, 4135100; 725300, 4103600; 240000, 4103900; 240700, 758300, 4112300; 758300, 4112900; 4135500; 725100, 4135400; 725000, 4104400; 241200, 4105300; 241200, 756600, 4112900; 756500, 4117000; 4135400; 725000, 4135600; 724800, 4106300; 240100, 4105200; 238900, thence north to x-coordinate 756500 on 4135700; 724600, 4135700; 724600, 4104300; 238400, 4104100; 237100, Ash Slough; thence northeast along Ash 4134700; 724200, 4134700; 724200, 4104200; 237100, 4105700; 235500, Slough to the Chowchilla River; thence 4105800; 235500, 4106600; 233200, 4135500; 723400, 4135500; 723400, northeast along the Chowchilla River to 4135600; 722800, 4135600; 722800, 4106700; thence west to UTM zone 10 y-coordinate 41194000; thence east to to the point of beginning at UTM 10 4135000; 722600, 4135000; 722600, 762300, 4119400; 762700, 4118600; 4134700; 722500, 4134700; 722200, NAD 83 coordinates 766600, 4106700. 762800, 4118000; 763300, 4117200; (9) Unit 5: Fresno County, California. 4137900; 722800, 4137900; 722800, 763500, 4117600; 763700, 4117600; (i) From USGS 1:24,000 quadrangle 4139300; 721900, 4139300; 721900, 764100, 4117300; 764200, 4116800; maps Academy, Clovis, Friant, and 4140200; 721000, 4140200; 721000, 764500, 4115900; 765400, 4115900; Round Mountain, California, land 4140900; 717800, 4140900; 717800, 765400, 4116400; 766100, 4116400; bounded by the following UTM 11 NAD 4137700; 717100, 4137700; 717000, 766100, 4115800; 765900, 4114300; 83 coordinates (E, N): 273000, 4076600; 4138200; 714500, 4140900; 714100, 766300, 4114200; thence northeast to 271300, 4076700; 271400, 4076900; 4141300; 714100, 4142200; 713600, UTM zone 11, land bounded by the 271700, 4077100; 271800, 4077300; 4142400; 713200, 4143000; 713000, following UTM 11 NAD 83 coordinates 271800, 4077500; 271500, 4077700; 4143900; 713100, 4144300; 713700, (E, N): 233900, 4114300; 234200, 271100, 4077700; 271100, 4078200; 4144600; 714500, 4145300; 714500, 4114300; 234200, 4113900; 234300, 271300, 4078400; 271600, 4078900; 4145700; 715800, 4145800; 717000, 4112700; 234900, 4112700; 235500, 271800, 4079100; 271900, 4079800; 4145800; 718000, 4145400; 718200, 4112900; 235700, 4112600; 235700, 271100, 4079900; 267900, 4080000; 4145900; 718200, 4147600; 719700, 4111500; 236200, 4111800; 236400, 266300, 4080000; 266300, 4080400; 4148400; 720600, 4148600; 720600, 4111800; 236800, 4111300; 236400, 266500, 4080500; 266500, 4080700; 4149200; 719600, 4149200; 719600, 4110800; 236400, 4109500; 237000, 266300, 4080800; 266300, 4081700; 4149800; 720300, 4149800; 721300, 4108700; 237600, 4108600; 238400, 265500, 4081800; 264000, 4081800; 4150700; 721700, 4150700; 724400, 4109300; 241300, 4109300; 242100, 265900, 4083100; 265900, 4083300; 4153300; 725000, 4153500; 725500, 4108700; 242200, 4109300; 241100, 263200, 4083300; 263100, 4082700; 4154200; 725800, 4154800; 727200, 4110700; 241100, 4111300; 241500, 262300, 4082700; 262300, 4083300; 4155900; 727800, 4155900; 728500, 4111300; 242000, 4110400; 243000, 261500, 4083400; 261500, 4083800; 4155600; 730200, 4155600; 731600, 4110300; 243000, 4109800; 245200, 260900, 4083800; 260900, 4084300; 4155500; 732400, 4155400; 732600, 4109700; 245900, 4108600; 247600, 261100, 4084300; 261100, 4084400; 4155200; 733200, 4154700; 734100, 4107500; 248000, 4106400; 248000, 260700, 4084700; 260700, 4085100; 4154900; 734600, 4154800; 735600, 4105900; 247400, 4105400; 247400, 260900, 4085300; 262100, 4085800; 4156000; 735900, 4156000; 737100, 4105200; 249100, 4104400; 251600, 262200, 4085900; 262200, 4086200; 4155400; 737800, 4155000; 738200, 4103800; 251900, 4103300; 251900, 262800, 4086200; 262600, 4086600; 4154200; 738300, 4153300; 739000, 4102600; 252300, 4102200; 252300, 262100, 4087000; 262100, 4087300; 4152800; 739100, 4152200; 740200, 4101400; 252900, 4101000; 253700, 262400, 4087500; 262400, 4088200; 4151800; 740800, 4151500; 740800, 4101600; 254500, 4101600; 255700, 261100, 4088200; 261100, 4087400; 4150300; 741100, 4149900; 741700, 4102000; 257800, 4102000; 258900, 260200, 4087400; 260100, 4086600; 4149400; 742100, 4148500; 742100, 4101100; 259000, 4098800; 259200, 259200, 4086600; 259200, 4087700; 4147100; 743400, 4146100; 744000, 4098400; 259200, 4098000; 258200, 259600, 4087500; 260000, 4087500; 4145600; 744400, 4144600; 744300, 4096900; 257400, 4096300; 256600, 260100, 4087900; 259700, 4088100; 4143900; 743900, 4142700; 744000, 4095600; 256200, 4095100; 255900, 258500, 4088200; 258000, 4088300; 4142000; 744200, 4141700; 745500, 4093800; 255700, 4092600; 255900, 258000, 4089100; 258500, 4089300; 4140300; 746100, 4139500; 746800, 4092200; 255900, 4092000; 255400, 258500, 4089800; 258300, 4089800; 4138500; 747700, 4137700; 748500, 4091700; 254600, 4090800; 253800, 257700, 4089200; 256600, 4089200; 4135800; 748700, 4135100; 749500, 4090400; 253300, 4089700; 252700, 256600, 4090200; 256800, 4090800; 4134000; 750700, 4131700; 751600, 4089000; 252500, 4088000; 251500, 256900, 4092700; 257200, 4094300; 4130500; 752000, 4130200; thence east 4087100; 251500, 4087100; 251200, 257300, 4095500; 258600, 4096700; to y-coordinate 4130200 on Mariposa 4087100; 251100, 4089300; 251200, 258900, 4096700; 259600, 4096700; Creek; thence southwest along Mariposa 4092200; 250600, 4092200; 250600, 259600, 4094700; 260300, 4094700; Creek to y-coordinate 4125000; thence 4093000; 251200, 4093500; 251300, 260300, 4093300; 259400, 4091700;

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00154 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60037

260800, 4091700; 262200, 4091100; 274200, 4078600; 274300, 4078100; 4098900; 268600, 4098300; 268500, 262900, 4091100; 262900, 4090400; 273300, 4078100; 273300, 4077100; 4098100; 268400, 4097800; 268100, 263200, 4089800; 263100, 4089400; returning to 273000, 4076600. 4097600; 267800, 4097400; returning to 264700, 4088700; 265000, 4087900; (10) Subunit 6A: Fresno County, 267300, 4097300. 265300, 4087600; 265900, 4087600; California. (11) Subunit 6B: Madera County, 265900, 4086800; 267000, 4086800; (i) From USGS 1:24,000 quadrangle California. maps Academy and Millerton Lake East, 267600, 4087000; 267800, 4086500; (i) From USGS 1:24,000 quadrangle 267200, 4085500; 267400, 4085100; California, land bounded by the following UTM 11 NAD 83 coordinates maps Millerton Lake East and North 268100, 4085300; 268300, 4085800; (E, N): 267300, 4097300; 266900, Fork, California, land bounded by the 269100, 4085800; 269800, 4085400; 4097300; 267000, 4097600; 267800, following UTM 11 NAD 83 coordinates 270300, 4084900; 271100, 4084800; 4098300; 268100, 4098700; 268100, (E, N): 271200, 4106800; 270200, 271900, 4085100; 272200, 4085600; 4098900; 268000, 4099100; 267400, 4106800; 269900, 4107000; 269900, 272800, 4086200; 273000, 4087300; 4099800; 267400, 4100300; 267700, 4107600; 270100, 4108600; 269300, 273300, 4087700; 273200, 4088500; 4100800; 268100, 4101400; 268600, 4108300; 269000, 4108700; 268500, 273200, 4089600; 274700, 4089600; 4101400; 269100, 4101100; 269600, 4108700; 268300, 4110000; 268800, 275400, 4090000; 275600, 4090500; 4101100; 269800, 4101300; 269900, 4110400; 268900, 4111000; 268300, 275900, 4090800; 276500, 4090900; 4101500; 269600, 4102200; 269200, 4111300; 268500, 4111500; 268600, 277100, 4090900; 277100, 4090200; 4102400; 268600, 4102800; 268700, 4112300; 268800, 4112400; 270600, 276100, 4088900; 276100, 4087900; 4103800; 269100, 4103800; 269600, 4112400; 270800, 4112100; 270700, 276000, 4087500; 275400, 4087200; 4103100; 270200, 4103500; 270300, 4111300; 269600, 4110800; 269700, 275100, 4086600; 274900, 4086000; 4103500; 270700, 4102500; 270500, 4110500; 270000, 4110200; 270600, 274400, 4085500; 274000, 4084900; 4102400; 270300, 4102200; 270300, 4109700; 270800, 4108800; 271300, 273400, 4084400; 273400, 4083800; 4101900; 270500, 4101500; 270600, 4108400; 271500, 4107800; 271600, 273600, 4083400; 273600, 4083000; 4101100; 270500, 4101000; 270200, 4107300; returning to 271200, 4106800. 272900, 4082900; 272800, 4082200; 4100700; 269400, 4100500; 268300, (12) Map follows of all critical habitat 272800, 4081400; 273000, 4080800; 4100500; 268100, 4100300; 268100, units for Castilleja campestris ssp. 273200, 4080500; 273500, 4080100; 4100100; 268400, 4099800; 268600, succulenta (Succulent Owl’s Clover). 273700, 4079700; 273800, 4079100; 4099500; 268700, 4099200; 268700, BILLING CODE 4310–55–P

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00155 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2 60038 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00156 Fmt 4701 Sfmt 4725 E:\FR\FM\24SEP2.SGM 24SEP2 EP24SE02.016 Federal Register / Vol. 67, No. 185 / Tuesday, September 24, 2002 / Proposed Rules 60039

Dated: September 6, 2002. Craig Manson, Assistant Secretary for Fish and Wildlife and Parks. [FR Doc. 02–23241 Filed 9–23–02; 8:45 am] BILLING CODE 4310–55–C

VerDate Sep<04>2002 17:14 Sep 23, 2002 Jkt 197001 PO 00000 Frm 00157 Fmt 4701 Sfmt 4702 E:\FR\FM\24SEP2.SGM 24SEP2