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Wednesday, July 21, 2010 Part II Department of the Interior Fish and Wildlife Service 50 CFR Part 17 Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Limnanthes floccosa ssp. grandiflora (Large-Flowered Woolly Meadowfoam) and Lomatium cookii (Cook’s Lomatium); Final Rule VerDate Mar<15>2010 15:19 Jul 20, 2010 Jkt 220001 PO 00000 Frm 00001 Fmt 4717 Sfmt 4717 E:\FR\FM\21JYR2.SGM 21JYR2 erowe on DSK5CLS3C1PROD with RULES_2 42490 Federal Register / Vol. 75, No. 139 / Wednesday, July 21, 2010 / Rules and Regulations DEPARTMENT OF THE INTERIOR SUPPLEMENTARY INFORMATION: alluvium is composed of a matrix of gravels and clay, which creates a Background Fish and Wildlife Service hardpan or duripan layer (mineral soil It is our intent to discuss only those horizons relatively impervious to 50 CFR Part 17 topics directly relevant to the water). During fall and winter rains, development and designation of critical water collects in shallow depressions of [Docket No. FWS–R1–ES–2009–0046] habitat for Limnanthes floccosa ssp. the vernal pool–mounded prairie [MO 92210–0–0009 B4] grandiflora and Lomatium cookii in this habitat. Downward percolation of water RIN 1018–AW21 final rule. For additional detailed is prevented by the presence of the information on the taxonomy, biology, duripan layer located from 0.18 to 0.75 Endangered and Threatened Wildlife and ecology of these species, please meters (m) (0.6 to 2.5 feet (ft)) below the and Plants; Designation of Critical refer to the final listing rule published soil surface (Keeley and Zedler 1998, p. Habitat for Limnanthes floccosa ssp. in the Federal Register on November 7, 2; Huddleston 2001, pp. 14–15). In areas grandiflora (Large-Flowered Woolly 2002 (67 FR 68004), and the Draft north and northwest of Medford, the Meadowfoam) and Lomatium cookii Recovery Plan for Listed Species of the vicinity of White City, and north along (Cook’s Lomatium) Rogue Valley Vernal Pool and Illinois low-elevation plains, Limnanthes River Valley Wet Meadow Ecosystems floccosa ssp. grandiflora and Lomatium AGENCY: Fish and Wildlife Service, (USFWS 2006, pp. II-1 to II-17). cookii occur on alluvial soils, primarily Interior. Information on the associated draft mapped as Agate-Winlo complex soils, ACTION: Final rule. economic analysis for the proposed rule but may also be found on mapped Coker to designate critical habitat was clay and Provig-Agate complex soils SUMMARY: We, the U.S. Fish and published in the Federal Register on with 0 to 3 percent slopes. Limnanthes Wildlife Service (Service), designate January 12, 2010 (75 FR 1568). floccosa ssp. grandiflora also critical habitat for two plants, occasionally occurs on soils mapped as Limnanthes floccosa ssp. grandiflora Species Description, Life History, Distribution, Ecology, and Habitat Carney clay and Winlo, very gravelly (large-flowered woolly meadowfoam) loam in vernal pool habitat north of and Lomatium cookii (Cook’s lomatium, Limnanthes floccosa ssp. grandiflora, White City (USDA 2006b). Cook’s desert parsley) under the commonly known as large-flowered In the Rogue River Valley, the two Endangered Species Act of 1973, as woolly meadowfoam, and Lomatium plants are associated with microhabitats amended (Act). We are designating cookii, commonly known as Cook’s occupied by mostly annual native forbs 2,363 hectares (ha) (5,840 acres (ac)) in lomatium or Cook’s desert parsley, are and graminoids (grass-like plants), Jackson County, Oregon, as critical endemic to seasonal wetland habitats of including Alopecurus saccatus (Pacific habitat for Limnanthes floccosa ssp. southwestern Oregon. Limnanthes foxtail), Deschampsia danthonioides grandiflora and 2,545 ha (6,289 ac) in floccosa ssp. grandiflora is restricted to (slender hairgrass), Eryngium Jackson and Josephine Counties, Jackson County in the Rogue River petiolatum (Oregon coyote thistle), Oregon, as critical habitat for Lomatium Valley, where it co-occurs with Trifolium depauperatum (poverty cookii. Excluding overlapping critical Lomatium cookii in several areas near clover), Myosurus minimus (tiny mouse- habitat units for the two species, a total White City in an area known as the tail), Navarretia leucocephala ssp. of approximately 4,018 ha (9,930 ac) Agate Desert (ONHP 1997, p. 3; leucocephala (white-head navarretia), located in Jackson and Josephine Huddleston 2001, p. 11). Lomatium Lasthenia californica (California Counties, Oregon, fall within the cookii occurs in two disjunct locations: goldfields), Phlox gracilis (slender boundaries of the critical habitat (1) In the Rogue River Valley, near the phlox), Plagiobothrys bracteatus designation. towns of Medford, White City, and Eagle (bracted popcornflower), and Triteleia Point; and (2) in the Illinois River Valley DATES: This final rule becomes effective hyacinthina (white brodiaea) (OSU on August 20, 2010. of Josephine County near the towns of 2007); USFWS 2006, p. II-6). Selma, Cave Junction, and O’Brien Native bunchgrass communities that ADDRESSES: This final rule and final (ONHDB 1994, p. 5). The two locations historically occurred in the Rogue River economic analysis are available on the are separated by approximately 48 Valley and supported Lomatium cookii Internet at http://www.regulations.gov; kilometers (km) (30 miles (mi)). habitat included Achnatherum maps of critical habitat are available at Limnanthes floccosa ssp. grandiflora lemmonii (Lemmon’s needlegrass), http://criticalhabitat.fws.gov. and Lomatium cookii are both Festuca roemeri var. klamathensis Supporting documentation we used in associated with the remaining relatively (Klamath Roemer’s fescue), and Poa preparing this final rule is available for undisturbed vernal pool–mounded secunda (rough bluegrass). The vernal public inspection, by appointment, prairie habitat in the Middle Rogue pool habitat occupied by Limnanthes during normal business hours, at the River Basin’s Agate Desert floccosa ssp. grandiflora in the Rogue U.S. Fish and Wildlife Service, Oregon (Environmental Science Associates River Valley ranges from 372 to 469 m th Fish and Wildlife Office, 2600 SE 98 (ESA) 2007, p. 2-1; ONHP 1997, p. 3). (1,220 to 1,540 ft) in elevation Ave., Portland, OR 97266; telephone Relative to the pools, the plants often (Huddleston 2001, p. 11; USGS 2002). 503–231–6179; facsimile 503–231–6195. occur in pool margins, or less often on The vernal pool habitat occupied by FOR FURTHER INFORMATION CONTACT: Paul both mound tops and depression Lomatium cookii in the same basin area Henson, State Supervisor, U.S. Fish and bottoms of drier vernal pools. ranges from 372 to 411 m (1,220 to 1,350 Wildlife Service, Oregon Fish and The substrate underlying the vernal ft) in elevation (Huddleston 2001, p. 11; Wildlife Office, 2600 SE 98th Avenue, pool topography in the Middle Rogue USGS 2009). Suite 100, Portland, OR 97266 River Valley is primarily a Pleistocene The habitats occupied by Lomatium (telephone 503–231–6179; facsimile outwash alluvium (mud, silt, and sand cookii in the Illinois River Valley are 503–231–6195). If you use a deposited by flowing water) deposited more complex than those in the Rogue telecommunications device for the deaf in what has become a deep bench or River Valley in both soil composition (TDD), call the Federal Information terrace above the current floodplain and soil depth. Lomatium cookii occurs Relay Service (FIRS) at 800–877–8339. (Elliot and Sammons 1996). The on 17 mapped soil types in the Illinois VerDate Mar<15>2010 15:19 Jul 20, 2010 Jkt 220001 PO 00000 Frm 00002 Fmt 4701 Sfmt 4700 E:\FR\FM\21JYR2.SGM 21JYR2 erowe on DSK5CLS3C1PROD with RULES_2 Federal Register / Vol. 75, No. 139 / Wednesday, July 21, 2010 / Rules and Regulations 42491 River Valley. The majority of Lomatium Heritage Information Center (ONHIC) in an approximately 60 percent loss of cookii occurrences in the Illinois River database 2008). the vernal pool landscape in the Rogue Valley are found on Brockman clay Land uses associated with the largest, River Valley due to building loam, Josephine gravelly loam, and more contiguous populations of construction, removal of habitat, altered Pollard loam (USDA 2008). Unlike the Limnanthes floccosa ssp. grandiflora hydrology, or altered topography (ONHP Middle Rogue River Basin soils, many of and Lomatium cookii are vernal pool 1997, pp. 14–15; Wille and Petersen the Lomatium cookii-occupied soil habitats managed specifically for 2006, p. 1993). types originate from stream-fed conservation or managed using Ground-disturbing activities, such as alluvium covering sedimentary or compatible agricultural practices. development, mining, road construction ultramafic rocks (ONHDB 1994, pp. 9– Actions conducive to large population and maintenance, or ORV use, can 10). Ultramafic rock is the parent sizes of either of the two species may damage the clay pan layer and allow material for serpentine rock formations, include prescribed burns, controlled soil moisture to drain from the vernal once the rock has undergone excessive grazing practices, or regular mowing. pools or wet meadow habitats that the heat and pressure through geologic The Rogue Valley International– plants depend on for reproduction and processes. The soils derived from Medford Airport is an example of an survival. Incompatible agricultural serpentine rock give rise to unusual and area that is mowed regularly to meet practices, including some timber rare associations of endemic plants that Federal Aviation Authority (FAA) safety management and crop management, can are tolerant of extremely toxic soil requirements and that supports a large alter hydrology, directly affect plants conditions. Serpentine rock is low in and prolific Lomatium cookii with equipment, allow nonnative thatch calcium and silica, low in many plant population that extends over 2.3 ha (7 to accumulate due to excessive grazing nutrients, and high in iron and ac) (R. Russell, pers. comm. 2004; S. rest, and stifle plant growth, or magnesium (Brady et al. 2005, p. 246). Friedman, pers. obs. 2009). Within indirectly affect plants as a result of Pollard loam and Speaker-Josephine grazed properties, small, isolated road construction.