Existing Conditions, Opportunities and Constraints

Southeast Greenway Existing Conditions, Opportunities, and Constraints Appendix

September 15, 2015

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Highlighted Route on the Regional Network Highlighted Route on the Regional Network A i O o L o w Bike Parking - Existing Bike Parking - Proposed Bike Lockers - Existing Bike Lockers - Proposed s

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Bike Routes ec ject list as some proposed routes require further study or are subject Bicycle Amenities

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NOTE: Proposed facilities outsidewith of the Santa countywide Rosa system. City Theby limits the City are City of shown or Santa to outside RosaSanta illustrate of Rosa has connectivity City City no limits. limits jurisdiction have overpurposes Any been facilities only. proposed not proposed facilities by owned not other owned jurisdictions by and the are City shown or here outside for of planning r This planning map should be consulted in conjunction with the bicycle to other jurisdictions. pro te D GS DR i TIMBER h

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THIS MAP IS NOT A BICYCLE ROUTE GUIDE CITY OF SANTA ROSA - NORTHEAST QUADRANT

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V C OACH MAN TAYLOR Appendix C Agenda Item#13.2 Meeting of: June 17, 2014 Mutual Letter of Intent Southeast Greenway

This Mutual Letter of Intent (“Letter”) is executed by the City of Santa Rosa, Sonoma County Water Agency, the Sonoma County Regional Parks Department, LandPaths and the Southeast Greenway Campaign Committee (hereinafter “Participants”) on the dates specified below.

The purpose of this Letter is to communicate the intent of the Participants regarding the future transfer and land management of the Caltrans Highway 12 Right of Way, known as the Southeast Greenway (“Property”), in order to facilitate such activities. The Property extends from Farmers Lane to Spring Lake Park. The specific intentions of the Participants are described below.

City of Santa Rosa The City of Santa Rosa intends to accept the land transfer if offered by Caltrans at no cost to the City for the portion of the Property between Farmers Lane and Summerfield Road. The City, through its Department of Community Development, intends to provide leadership regarding the general planning of future land uses on the entire Property, between Farmers Lane and Spring Lake Park. The City, through its Department of Recreation and Parks, intends to operate and manage the portion of the Property between Farmers Lane and Summerfield Road with the support of Landpaths as discussed below. The City intends to enter into an agreement with LandPaths to provide volunteers for day-to-day oversight and maintenance of this portion of the Property. The City also intends to negotiate in good faith with the Water Agency regarding the location of an easement for any future water pipeline on this portion of the Property and to coordinate with the Water Agency regarding future land use of this property to facilitate placement of the pipeline.

Sonoma County Water Agency The Sonoma County Water Agency intends to accept the land transfer offered by Caltrans for the portion of the Property between Summerfield Road and Spring Lake Park. The Water Agency intends to enter into an agreement with the Sonoma County Regional Parks Department for day- to-day oversight and maintenance of this portion of the Property. The Water Agency is interested in securing an easement on and using the portion of the Property to be transferred to the City for a possible future water pipeline, and intends to negotiate and coordinate with the City regarding the placement of the pipeline on such Property.

Sonoma County Regional Parks Department The Sonoma County Regional Parks Department intends to operate and manage the portion of the Property between Summerfield Road and Spring Lake Park pursuant to an agreement with the Sonoma County Water Agency. The Regional Parks Department intends to provide day-to- day oversight and maintenance of this portion of the Property pursuant to the agreement.

LandPaths LandPaths intends to integrate the Southeast Greenway Campaign Committee into its organization to provide support for the future management of the Property in 2015/2016. LandPaths intends to enter into an agreement with the City to engage the community

1 Agenda Item#13.2 Meeting of: June 17, 2014 with the Property between Farmers Lane and Summerfield Road. It is intended that this will include, but may not be limited to, managing and obtaining public input on possible uses of the Property and day-to-day oversight and maintenance of this portion of the Property.

Southeast Greenway Campaign Committee The Committee intends to integrate with and become an ongoing part of LandPaths for this project in 2015. The Committee intends to develop strategy and advocacy for the Property’s transfer and to manage and obtain public input on possible uses for the Property, and continue to be a catalyst for legislation, fundraising and community participation with respect to the Property.

This Letter expresses the present intention of the Participants and is not a legally binding instrument, and is being created to facilitate the acquisition and management activities described herein. Any final decisions will have to be approved by the respective boards or councils of the parties to this Letter. This Letter may be signed in counterparts.

The individuals executing this Letter have been authorized by their respective boards or authorizing agents to do so.

______City of Santa Rosa Date

______Sonoma County Water Agency Date

______Sonoma County Regional Parks Date

______LandPaths Date

______Southeast Greenway Campaign Committee Date

2 Appendix D

Appendix E

MEMORANDUM

Date: November 24, 2014 To: Erin Morris, Senior Planner From: Sean McNeil, Environmental Specialist Re: Environmental Study of the Highway 12 Right of Way Property from Farmers Lane to Summerfield Road

This memo is a review of the current site conditions on a property that has been a part of the Highway 12 expansion right‐of‐way. This site is part of a larger site known as the Southeast Greenway. The purpose of this study is to document the current conditions within the study area and identify any potentially environmentally sensitive areas.

Attached to this memo are:

 Attachment 1: Location and site maps  Attachment 2: Soil Report  Attachment 3: Photo Sheets Location The study area is a linear 1.4 mile stretch of undeveloped land that was part of the California Transportation Department’s Right of Way for a planned expansion of Highway 12 in the Bennett Valley area of Santa Rosa, California. The study area is bounded on the west by Farmers Lane and Summerfield Road on the east. The property spans from Latitude 39.4371 and Longitude ‐122.6869 to Latitude 38.4444 and Longitude ‐122.6641. There is an additional part of the Highway 12 right‐of‐way east of Summerfield Road that was not evaluated for this report (see Attachment 1 for site map and location details). The site is bisected by four City Streets and three creeks and is surrounded by a mix of commercial and residential development. This property was part of the Highway 12 Right‐of‐way and has no Assessor Parcel Numbers (APNs) to provide description. Non‐Environmental Constraints Within the study area there are a number of projects identified in the City of Santa Rosa’s Citywide Creek Master Plan. These projects include a Class 1 bicycle/pedestrian path from Hoen Avenue to Summerfield Road with a trail bridge over Sierra Park Creek and creek restoration for all three creeks in the study area.

There are a number of water and sewer lines that cut across the project area and a large storm water pipe known as the Spring Creek Diversion that runs east to west from Summerfield Road to Franquette Avenue along the southern extent of the property. State Listed and Species of Special Concern The California Natural Diversity Database is a geographic information system (GIS) database that stores known locations for State of California and Federally Protected species. A query of this database was conducted for all of the known occurrences within two miles of the project area (see Table 1A for the list of animals and Table 1B for list of plants). Appendix E

Soils The study area has a diversity of soil types throughout the extent. Outside of the creek channels, the land is predominantly flat with soils of alluvium deposits derived from volcanic rock. The three most common soil types are Clear Lake clay with sandy substratum Yolo clay loam and Clear Lake clay loam. These soils are typically poorly drained that generate a high amount of runoff during storm events. In addition, these soils also are often associated with a high water table which could allow topographic depressions to become wetlands (see Attachment 2: Custom Soil Resource Report for a more detailed description of the soil types and locations in the study site). Habitats The property is primarily grassland with three creeks, numerous swales, potential wetlands and remnant walnut orchards. In general, the site has been neglected except for annual vegetation cutting to lower fire danger (see Photo Sheet, Figure 1). Trash has been allowed to accumulate throughout the study area (see Photo Sheet, Figure 3 and Figures 8‐9) and appears to have been repeatedly chopped up and tilled into the soil through disking activities. In spite of the site conditions, the large undeveloped area provides habitat for many mammals, birds, fish and many different invertebrate animals. Grasslands The grasslands consist mostly of non‐native grasses and herbs typical of abandoned agriculture fields or roadside habitats. These grasslands are maintained through regular disking, which disturbs the soil and most likely prevents the establishment of trees of shrubs within these areas. The grasslands are dominated by non‐native grasses like Bermuda grass, harding grass and Mediterranean barley, but also have some common roadside forbs like bur clover, smooth cat’s ear and bindweed. These plants are indicative of a regularly disturbed system. The site historically was known to be a “valley needlegrass grassland” dominated a great diversity of grasses and flowering plants. Another site disturbance is that there is a large soil stock pile that is located west of Yulupa Avenue. The origination of this stockpile will need to be determined and/or tested for potential contamination before it is moved or used onsite. Orchards The eastern‐most section of the study area is a former walnut orchard with some surviving walnut trees, but many of the cultivars have died and left only the rootstocks of black walnuts. According to aerial imagery, this area has had orchards all the way back to 1942, but what type of orchard is not able to be determined from the photos. The understory of the walnut orchard has been disked like the grassland areas, but close to the walnut trees are native oak trees and poison oak vines (see Photo Sheet, Figure 2). The recruitment of these native plants under the protection of the walnut trees are evidence that this section of the study area could have been more of an oak woodland, where valley oaks may have been the more dominant trees. Riparian The study area has three highly modified creeks flowing through it, Matanzas Creek, Sierra Park Creek and Spring Creek. Matanzas Creek and its tributaries are known to have native salmonids living in the streams. While the creeks are constricted to engineered channels, there are quite a few native riparian plants present in these degraded habitats. Common trees include the coast live oak, black oak, Oregon ash and some California bay trees. The Citywide Creek Master Plan recommends restoration of all three creeks by removing non‐native plant species and increasing the riparian vegetation into the existing Appendix E grasslands. The site has drainage ditches that collect water from the study area and move it into existing channels. Some of the ditches along the southern limits of the site also receive storm water runoff from the commercial and residential properties adjacent to the site.

Matanzas Creek Matanzas Creek flows from the northern slopes of Sonoma Mountain through Bennett Valley eventually meeting Santa Rosa Creek just downstream of Santa Rosa Avenue. This is the largest creek that flows through the study area, and despite the high amount of English ivy along the banks there are many native plants existing within the riparian zone including. The channel is deeply cut with steep banks that have been supported with concrete retaining walls on the right bank in the study area.

Sierra Park Creek Sierra Park Creek is a tributary to Matanzas Creek. Upstream of the study area Sierra Park Creek is relatively natural as it meanders through residential neighborhoods, but is highly modified within the study area. Most of the creek’s flow is diverted into the Spring Creek Bypass, only in extreme weather events would the water continue downstream into its natural channel (see Photo Sheet, Figure 7). Local drainage within the study area feed into the creek downstream of the diversion and makeup the primary flow into the lower extent of Sierra Park Creek. Restoring the historic flow into this creek would require a hydraulics and hydrology study to determine how much of the high flow must be diverted into the Spring Creek Bypass to continue to provide flood protection for the neighborhood downstream of the project area.

Spring Creek Spring Creek is one of the larger tributaries to Matanzas Creek, but its flow is highly modified. The headwaters of Spring Creek originate in Annadel State Park, but is partially diverted into Spring Lake and again diverted in a second underground structure located within the study area. These structures were designed, built and maintained by the Sonoma County Water Agency to prevent flooding in the residential areas downstream of the study area. The diversion in the study area was designed to have the creek’s low flow water to continue into the historic channel and higher amounts to be diverted into a 72” culvert pipe that expands to a 96” pipe and travels south through the study area where it eventually reconnects with the original channel downstream of Farmers Lane (see Photo Sheet, Figure 5).

Within the study area the historic channel still has a native tree canopy, but the understory is dominated by Himalayan blackberry and non‐native grasses. Sediment has accumulated within the channel and may impede the low flow passing through the diversion structure from entering the channel (see Photo Sheet, Figure 6). Wetlands Based on the high water table and impermeable clay soils throughout the study area there was likely historic seasonal wetlands. An official wetland delineation was not conducted for this survey, but locations of potential wetlands were identified. Some of the site drainage ditches may meet the wetland criteria as defined by the U.S. Army Corps of Engineers and one large area near the Montgomery High School football field, see Attachment 1 Site Area Maps for locations of these features. Appendix E

Plant Survey The study area’s vegetation was surveyed using meandering transects, where the site was walked three times in late October and early November, 2014. All species that were able to be identified were recorded (see Table 1 for all species identified for this study). This survey is not intended to be an exhaustive list of the species present. If a more complete list of plants in the study site was required further surveys would need to be done in the spring and summer time to identify annual plants that bloom in the different seasons. The recent disking of the soil was an additional challenge to identifying the plants within the study area.

Results The study area is dominated by non‐native plants like Himalayan blackberry, Harding grass and annual grasses typically found in areas with a high level of disturbance. No species of special concern were identified within the study area. Appendix E

Table 1. Species of special concern recorded in the California Natural Diversity Database and found within two miles of the study area. A) the animals and B) the plants.

1A. Animals Scientific Name Common Name US LIST California List Emys marmorata western pond turtle None Species of special concern

1B. Plants Scientific Name Common Name US LIST California List Amsinckia lunaris bent‐flowered fiddleneck None Species of special concern Arctostaphylos canescens Sonoma canescent ssp. sonomensis manzanita None Species of special concern Arctostaphylos stanfordiana ssp. decumbens Rincon Ridge manzanita None Species of special concern Brodiaea leptandra narrow‐anthered brodiaea None Species of special concern Ceanothus confusus Rincon Ridge ceanothus None Species of special concern Ceanothus divergens Calistoga ceanothus None Species of special concern Ceanothus purpureus holly‐leaved ceanothus None Species of special concern Ceanothus sonomensis Sonoma ceanothus None Species of special concern Fritillaria liliacea fragrant fritillary None Species of special concern Leptosiphon jepsonii Jepson's leptosiphon None Species of special concern Navarretia leucocephala ssp. bakeri Baker's navarretia None Species of special concern Trifolium hydrophilum* saline clover None Species of special concern Triquetrella californica coastal triquetrella None Species of special concern Appendix E

Table 2. List of plants identified throughout the study area.

Plant Scientific Name Common Name Form Plant Family Aesculus californica California buckeye Tree Sapindaceae Fraxinus latifolia Oregon ash Tree Oleaceae Juglans species walnut cultivars Tree Juglandaceae Olea europaea olive Tree Oleaceae Prunus species wild plum Tree Roseaceae Pyrus species pear tree Tree Roseaceae Quercus agrifolia live oak Tree Fagaceae Quercus garryana Garry oak Tree Fagaceae Quercus kelogii black oak Tree Fagaceae Quercus lobata valley oak Tree Fagaceae Salix exigua sandbar willow Tree Salicaceae Salix lasiolepis var. lasiolepis arroyo willow Tree Salicaceae Sambucus mexicanus blue elderberry Tree Roseaceae Baccharis pilularis coyote brush Shrub Asteraceae Toxicodendron diversilobum poison oak Shrub Anacardiaceae Hedera helix English ivy Vine Araliaceae Rubus armeniacus Himalayan blackberry Vine Roseaceae Rubus canadensis thornless blackberry Vine Roseaceae Vitis species grape cultivar Vine Vitaceae Arundo donax giant reed Grass Poaceae Avena fatua wild oat Grass Poaceae Bromus diandrus ripgut brome Grass Poaceae Cynodon dactylon Bermuda grass Grass Poaceae Elymus triticoides creeping wild rye Grass Poaceae Hordeum marinum ssp gussoneanum Mediterranean barley Grass Poaceae Phalaris aquatica Harding grass Grass Poaceae Carex barbarae Santa Barbara sedge Grass‐like Cyperaceae Juncus patens spreading rush Grass‐like Juncaceae Convolvulus arvensis bindweed Herb Convolvulaceae Foeniculum vulgare sweet fennel Herb Apiaceae Helminthotheca echioides bristly ox‐tongue Herb Asteraceae Hypochaeris glabra smooth cat's ear Herb Asteraceae Malva parviflora cheeseweed Herb Malvaceae Medicago polymorpha bur clover Herb Fabaceae Mentha pulgium pennyroyal Herb Lamiaceae Taraxacum officinale dandelion Herb Asteraceae Xanthium strumarium cockle bur Herb Asteraceae Appendix E

Data Sources: The information in this memo was compiled from site visits and many different sources, including: online databases, planning documents, aerial imagery and citizen reports.

Citations:

Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012. The Jepson Manual: vascular plants of California, second edition. University of California Press, Berkeley.

Barnhart, S. 2014. Southeast Greenway: restoration and mitigation potential for native habitat types. Unpublished technical report.

Barnhart, S. 2014. Current condition of the Caltrans Hwy 12 right‐of‐way in Santa Rosa (aka the Southeast Greenway).Unpublished technical report.

Best, C., J.T. Howell, W. and I. Knight, and M. Wells. 1996 . A Flora of Sonoma County. California Native Plant Society, Sacramento, CA.

California Department of Fish and Wildlife (CDFW). 2014. California Natural Diversity Database (CNDDB), 2014. https://www.dfg.ca.gov/biogeodata/cnddb/mapsanddata.asp Accessed November 2014.

Santa Rosa Citywide Creek Master Plan, August 2013

Sawyer, and T. Keeler‐Wolf, 2009. A Manual of California Vegetation. Online version at http://www.ice.ucdavis.edu/cnps/. California Native Plant Society, Sacramento, CA. Viewed November, 2014.

U.S. Department of Agriculture, Natural Resource Conservation Service, 2009. Custom Soil Resoruce Report for Sonoma County, California. Web Soil Survey. Available online at http://websoilsurvey.nrcs.usda.gov/. Accessed November 2014. vPhoto Sheets of the Highway 12 Right‐of‐way Study Area.

Figure 1: Typical grassland showing the furrowed ground from the disking activity.

Figure 2: The remnant walnut orchard showing other woody plants growing from underneath the canopy of the old walnut trees. Figure 3: Local site drainage ditch that has collected trash.

Figure 4: One of the site's deeper drainage ditches that runs north south and has a sewer line adjacent to it. Figure 5: The Spring Creek diversion structure is below this grate. The trees in the middle of the photo are in the old creek channel.

Figure 6: The outfall from the Spring Creek Diversion into the old creek channel note that the bottom of the culvert pipe is filled with sediment. Figure 7: Sierra Park Creek diversion into the Spring Creek Diversion.

Figure 8: Trash along the study area border. Figure 9: Trash from illegal dumping and an abandoned homeless camp.

Figure 10: Abandoned parking lot on the western most part of the study area. APPENDIX E (EAST SUBAREA)

MEMORANDUM

Date: May 1, 2015 To: Erin Morris, Senior Planner From: Sean McNeil, Environmental Specialist Re: Environmental Study of the Highway 12 Right of Way Property from Summerfield Road to Spring Lake Regional Park

This memo is a review of the current site conditions on a property that has been a part of the Highway 12 expansion right‐of‐way. The purpose of this study is to document the current conditions within the study area and identify any potentially environmentally sensitive areas.

Attached to this memo are:

 Attachment 1: Site Map  Attachment 2: Soil Report  Attachment 3: Photo Sheets Location The study area is approximately 16 acres that is 2,600 foot from east to west with varying widths. This property is undeveloped land that was part of the California Transportation Department’s Right of Way for a planned expansion of Highway 12 in the Bennett Valley area of Santa Rosa, California. The study area is bounded on the west by Summerfield Road and on the east by Spring Lake Regional Park. The property spans from Latitude 38.4444 and Longitude ‐122.6641 to Latitude 38.4495 and Longitude ‐ 122.6568. The elevation ranges from about 220 feet on the western edge to 350 feet along the eastern border (see Attachment 1 for site map and location details). The site is surrounded by a mix of residential densities and a park. This property was part of the Highway 12 Right‐of‐way and has no Assessor Parcel Numbers (APNs) to provide description. State Listed and Species of Special Concern The California Natural Diversity Database is a geographic information system (GIS) database that stores known locations for State of California and Federally Protected species. A query of this database was conducted for all of the known occurrences within two miles of the project area (see Table 1A for the list of animals and Table 1B for list of plants). Soils The study area has a diversity of soil types throughout the extent. The land is predominantly sloped facing the west with soils of alluvium deposits derived from volcanic rock. The two most common soil types are Pleasanton‐Haire complex, 9 to 15 percent slopes and Spreckels loam, 9 to 15 percent slopes. These soils are moderately to well‐drained soils made up of gravelly loam. Throughout the area there are rock outcrops with the most prevalent located at the eastern most sections (see Attachment 2 ‐ Custom Soil Resource Report for a more detailed description of the soil types and locations in the study site).

1 APPENDIX E (EAST SUBAREA)

Habitats The property is primarily grassland with rocky outcrops, oak woodlands, a large potential wetland and a small remnant walnut orchard. Much of the site is managed by the use of horse grazing or mechanically mowed to remove dry biomass and lower fire danger (see Photo Sheet, Figures 1 and 2). This part of the Highway 12 right of way property is much more natural and supports a higher density and diversity of habitats and wildlife species, than the section west of Summerfield Road. Grasslands The grasslands consist mostly of non‐native grasses and herbs typical of abandoned agriculture fields or roadside habitats. These grasslands are maintained by browsing and mowing (see Photo Sheet Figures 1 through 4 of the Photo sheets). The grasslands are dominated by non‐native grasses like ripgut brome, Harding grass and orchardgrass, but also have some common roadside forbs like English plantain, dovesfoot cranebill, and prickly sow thistle. These plants are indicative of a regularly disturbed system. The site historically was known to be a “valley needlegrass grassland” dominated a great diversity of grasses and flowering plants. Throughout the grasslands there are many features that could meet the criteria for wetlands, further studies would need to be conducted to delineate these features (see Figures 8 and 9 in the Photo sheets). The westernmost meadow appears to be more of a wet meadow with basket sedge and Harding grass. There are also a series of horse paddocks within the grassland area, with barns, flat areas and fencing. Oak Woodlands There are oaks and other hardwoods spread throughout the property. This area is a transition zone, from the flat, clay‐dominated soils dominated by valley oaks to the rocky hillslopes of Annadel where conifers mix in with hardwoods. Most of the oaks in the study area are older specimens, but along the fringes there is some evidence of some regeneration. Orchards The southwestern section of the study area is a former walnut orchard. The walnut trees appear to be cared for with many original trees still surviving. Near the orchard is an area with recently planted native trees. Drainage Swales The study area does not have any creeks, but there are a number of drainage swales that collect runoff from the property and some adjoining properties. These swales are ephemeral and may not meet the US Army Corps requirements as “Waters of the United States”, but may meet the criteria for “Waters of the State.” Large Wetland The site has a large more than a half‐acre wetland, though the exact size would need to be determined through a wetland delineation. This feature is surrounded by Himalayan blackberry and the central part of the wetland was not accessed (See Figures 6 and 7). Wetlands Even though most of the soil is quick draining, there appears to be many pockets of small wetlands. It could be that there is an impermeable rock layer that traps water in these depressions. Further analysis

2 APPENDIX E (EAST SUBAREA) would need to be done on these areas to determine the number and extent of these wetland features (see Figures 8 and 9 of the Photo Sheets). Plant Survey The study area’s vegetation was surveyed using meandering transects, where the site was walked in early March. All species that were able to be identified were recorded (see Table 2 for all species identified for this study). This survey is not intended to be an exhaustive list of the species present. If a more complete list of plants in the study site was required further surveys would need to be done later in the spring and summer time to identify annual plants that bloom in the different seasons.

Results The property has a diversity of microclimates and has a diverse plant community. While this one day survey identified more than fifty species of plants, there are many more species that were unidentifiable due to the season and access into the wetland was impeded by Himalayan blackberry. The oak woodlands appear to be increasing in the eastern higher elevation sections, probably due to the fact that grazing is the primary weed control, while the western section gets disked with a tractor and has little oak recruitment. The grasslands are dominated by non‐native plants like Harding grass, orchardgrass and rat‐tail fescue.

The vegetation survey identified locations with specific plant species that are indicative of potential wetlands or wet meadows. These features provide a different habitat than the dominant grasslands, characterizes as having inundated soils in the winter and extended soil moisture into the dryer summer months. In the northwestern edge of the property there is a large stand of basket sedge which could indicate a higher water table or natural springs. In the grasslands west of the large wetland feature there are small depressions that appear to hold water long enough for algae to grow (see Figure 9). In these depressions there were wetland indicator plants like iris‐leaved rush and curly dock, mixed with annual grasses like, ryegrass and little rattlesnake grass.

There were no species of special concern identified within the study area. Wildlife Habitat The mixture of grassland, large trees and a wetland makes this property suitable for a diversity of wildlife. The large size of the parcel, not bisected with roads, allows wildlife to travel freely through the property to the much larger Spring Lake Regional Park and to the low density suburban neighborhoods. The only impediments to free movement may be the fencing for the horse paddocks, but they are situated in a way to allow animals to pass by on the north or the south. A large herd of deer was observed on May 3, 2015 and a neighbor reported seeing a coyote on the property.

3 APPENDIX E (EAST SUBAREA)

Table 1. Species of special concern recorded in the California Natural Diversity Database and found within two miles of the study area. A) the animals and B) the plants.

1A. Animals Scientific Name Common Name US LIST California List Emys marmorata western pond turtle None Species of special concern

Table 2. List of plants identified throughout the study area.

2A. Gymnosperms Scientific Name Common Name Family Pinus radiata Monterey pine Pinaceae

4 APPENDIX E (EAST SUBAREA)

2B. Angiosperms – Dicots Scientific Name Common Name Family Toxicodendron diversilobum poison oak Anacardiaceae Conium maculatum poison hemlock Apiaceae Foeniculum vulgare sweet fennel Apiaceae Sanicula crassicaulis Pacific blacksnakeroot Apiaceae Baccharis pilularis coyote brush Asteraceae Carduus pycnocephalus Italian thistle Asteraceae Cirsium vulgare bull thistle Asteraceae Hypochaeris radicata cats ear Asteraceae Silybum marinum milk thistle Asteraceae Sonchus asper prickly sow thistle Asteraceae Cynoglossum grande Pacific hound's tongue Boraginaceae Medicago polymorpha bur clover Fabaceae Trifolium spp clover Fabaceae Vicia americana purple vetch Fabaceae Quercus agrifolia live oak Fagaceae Quercus garryana Garry oak Fagaceae Quercus kelloggii black oak Fagaceae Quercus x eplingii hybrid oak Fagaceae Quercus lobata Valley oak Fagaceae Erodium cicutarium redstem filaree Geraniaceae Geranium dissectum cut‐leaved geranium Geraniaceae Geranium molle dovesfoot cranesbill Geraniaceae Juglans hindsii California walnut Juglandaceae Mentha pulgium pennyroyal Lamiaceae Umbellularia californica California bay laurel Lauraceae Claytonia perfoliata miner's lettuce Montiaceae Anagallis arvensis scarlet pimpernel Myrsinaceae Plantago lanceolata English plantain Plantaginaceae Platanus racemosa California sycamore Platanaceae Rumex crispus curly dock Polygonaceae Ranunculus muricatus prickle‐fruited buttercup Ranunculaceae Prunus spp wild plum Roseaceae Rubus armeniacus Himalayan blackberry Roseaceae Parentucellia viscosa yellow parentucellia Scrophulariaceae Salix sp willow Salicaceae Sequoia sempervirens redwood Taxodiaceae Vitis spp grape cultivar Vitaceae

5 APPENDIX E (EAST SUBAREA)

2C. Angiosperms – Monocots Scientific Name Common Name Family Chlorogalum pomeridianum soap plant Agavaceae Arum italicum Italian arum Araceae Carex barbarae basket sedge Cyperaceae Cyperus eragrostis ssp eragrostis nut‐grass Cyperaceae Juncus spp rush Juncaceae Juncus xiphioides iris leaved rush Juncaceae Dichelostemma capitatum bluedicks Liliaceae Narcissus pseudonarcissus Daffodil Liliaceae Briza minor rattlesnake grass Poaceae Bromus dianddrus ripgut brome Poaceae Bromus hordeaceus soft chess Poaceae Cortadeira selloana pampass‐grass Poaceae Dactylis glomerata orchardgrass Poaceae Festuca myuros fescue Poaceae Festuca perennis ryegrass Poaceae Hordeum brachyantherum ssp.brachyantherium meadow barley Poaceae Phalaris aquatica Harding grass Poaceae

6 APPENDIX E (EAST SUBAREA)

Data Sources: The information in this memo was compiled from site visits and many different sources, including: online databases, planning documents, aerial imagery and citizen reports.

Citations:

Barnhart, S. 2014. Southeast Greenway: restoration and mitigation potential for native habitat types. Unpublished technical report.

Barnhart, S. 2014. Current condition of the Caltrans Hwy 12 right‐of‐way in Santa Rosa (aka the Southeast Greenway).Unpublished technical report.

Best, C., J.T. Howell, W. and I. Knight, and M. Wells. 1996 . A Flora of Sonoma County. California Native Plant Society, Sacramento, CA.

California Department of Fish and Wildlife (CDFW). 2014. California Natural Diversity Database (CNDDB), 2014. https://www.dfg.ca.gov/biogeodata/cnddb/mapsanddata.asp Accessed November 2014.

Santa Rosa Citywide Creek Master Plan, August 2013

Sawyer, and T. Keeler‐Wolf, 2009. A Manual of California Vegetation. Online version at http://www.ice.ucdavis.edu/cnps/. California Native Plant Society, Sacramento, CA. Viewed November, 2014.

7 Photo Sheets of the Highway 12 Right of Way East Subarea

Figure 1: Upper grassland with horse paddocks in the background.

Figure 2: Oak woodland surrounded by grassland. Figure 3: Grassland showing volcanic rocks interspersed throughout.

Figure 4: Grassland area with low productivity. Figure 5: Drainage swale along the southern border of the property. This swale drains into the large wetland feature on the property.

Figure 6: The large wetland feature is surrounded by Himalayan blackberry. Figure 7: Outer edge of the large wetland.

Figure 8: Small pocket wetland near, but not connected to the property’s large wetland. Figure 9: Close-up of the pocket wetland showing algae growth. Exhibit 7a Exhibit 7A Exhibit Exhibit 7b Exhibit 7B Exhibit Exhibit 7c Exhibit 7C Exhibit United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for States Department of Agriculture and other Federal agencies, State Sonoma County, Natural agencies including the Resources Agricultural Experiment Conservation Stations, and local California Service participants

November 13, 2014 Preface

Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/portal/ nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (http:// offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means

2 for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer.

3 Contents

Preface...... 2 How Soil Surveys Are Made...... 5 Soil Map...... 7 Soil Map...... 8 Legend...... 9 Map Unit Legend...... 10 Map Unit Descriptions...... 10 Sonoma County, California...... 12 CcA—Clear Lake clay loam, 0 to 2 percent slopes...... 12 CeA—Clear Lake clay, sandy substratum, 0 to 2 percent slopes, MLRA 14...... 13 PlD—Pleasanton-Haire complex, 9 to 15 percent slopes...... 14 RnA—Riverwash...... 16 TuE—Tuscan cobbly clay loam, 9 to 30 percent slopes...... 17 YtA—Yolo clay loam, 0 to 2 percent slopes...... 18 ZaA—Zamora silty clay loam, 0 to 2 percent slopes...... 19 References...... 21

4 How Soil Surveys Are Made

Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the

5 Custom Soil Resource Report individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil- landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately.

6 Soil Map

The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit.

7 Custom Soil Resource Report Soil Map 122° 41' 22'' W 22'' 41' 122° W 39'' 39' 122°

527100 527300 527500 527700 527900 528100 528300 528500 528700 528900 529100 529300 529500 38° 26' 52'' N 38° 26' 52'' N 4255500 4255500 4255300 4255300 4255100 4255100 4254900 4254900 4254700 4254700 4254500 4254500 4254300 4254300 4254100 4254100

38° 26' 0'' N 38° 26' 0'' N 527100 527300 527500 527700 527900 528100 528300 528500 528700 528900 529100 529300 529500

Map Scale: 1:11,500 if printed on A landscape (11" x 8.5") sheet. Meters N 0 150 300 600 900 122° 41' 22'' W 22'' 41' 122° W 39'' 39' 122° Feet 0 500 1000 2000 3000 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84 8 Custom Soil Resource Report

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) Spoil Area The soil surveys that comprise your AOI were mapped at 1:20,000. Area of Interest (AOI) Stony Spot Soils Warning: Soil Map may not be valid at this scale. Very Stony Spot Soil Map Unit Polygons Wet Spot Enlargement of maps beyond the scale of mapping can cause Soil Map Unit Lines Other misunderstanding of the detail of mapping and accuracy of soil line Soil Map Unit Points placement. The maps do not show the small areas of contrasting Special Line Features soils that could have been shown at a more detailed scale. Special Point Features Water Features Blowout Streams and Canals Please rely on the bar scale on each map sheet for map Borrow Pit measurements. Transportation Clay Spot Rails Source of Map: Natural Resources Conservation Service Closed Depression Interstate Highways Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov Gravel Pit Coordinate System: Web Mercator (EPSG:3857) US Routes Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator Landfill projection, which preserves direction and shape but distorts Local Roads distance and area. A projection that preserves area, such as the Lava Flow Background Albers equal-area conic projection, should be used if more accurate Marsh or swamp Aerial Photography calculations of distance or area are required.

Mine or Quarry This product is generated from the USDA-NRCS certified data as of Miscellaneous Water the version date(s) listed below.

Perennial Water Soil Survey Area: Sonoma County, California Rock Outcrop Survey Area Data: Version 8, Sep 25, 2014

Saline Spot Soil map units are labeled (as space allows) for map scales 1:50,000 Sandy Spot or larger. Severely Eroded Spot Date(s) aerial images were photographed: Nov 2, 2010—Feb 17, Sinkhole 2012 Slide or Slip The orthophoto or other base map on which the soil lines were Sodic Spot compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

9 Custom Soil Resource Report

Map Unit Legend

Sonoma County, California (CA097)

Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI CcA Clear Lake clay loam, 0 to 2 4.1 11.2% percent slopes CeA Clear Lake clay, sandy 20.4 55.6% substratum, 0 to 2 percent slopes, MLRA 14 PlD Pleasanton-Haire complex, 9 to 0.3 0.9% 15 percent slopes RnA Riverwash 1.0 2.7% TuE Tuscan cobbly clay loam, 9 to 30 0.7 1.8% percent slopes YtA Yolo clay loam, 0 to 2 percent 6.8 18.5% slopes ZaA Zamora silty clay loam, 0 to 2 3.4 9.3% percent slopes Totals for Area of Interest 36.8 100.0%

Map Unit Descriptions

The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with

10 Custom Soil Resource Report some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example.

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Sonoma County, California

CcA—Clear Lake clay loam, 0 to 2 percent slopes

Map Unit Setting National map unit symbol: hfbh Elevation: 20 to 1,500 feet Mean annual precipitation: 10 to 35 inches Mean annual air temperature: 57 to 63 degrees F Frost-free period: 225 to 300 days Farmland classification: Prime farmland if irrigated

Map Unit Composition Clear lake and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Clear Lake Setting Landform: Basin floors Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium derived from sedimentary rock Typical profile H1 - 0 to 13 inches: clay loam H2 - 13 to 60 inches: clay Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.2 inches) Interpretive groups Land capability classification (irrigated): 2s Land capability classification (nonirrigated): 3s Hydrologic Soil Group: C

Minor Components Wright Percent of map unit: 8 percent

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Huichica Percent of map unit: 7 percent

CeA—Clear Lake clay, sandy substratum, 0 to 2 percent slopes, MLRA 14

Map Unit Setting National map unit symbol: 2vbsl Elevation: 20 to 360 feet Mean annual precipitation: 26 to 42 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 225 to 300 days Farmland classification: Prime farmland if irrigated and drained

Map Unit Composition Clear lake, drained, and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Clear Lake, Drained Setting Landform: Basin floors Landform position (three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Basin alluvium derived from volcanic and sedimentary rock over fan alluvium derived from volcanic and sedimentary rock Typical profile Apg1 - 0 to 2 inches: clay Apg2 - 2 to 8 inches: clay Assg - 8 to 25 inches: clay Bssg1 - 25 to 39 inches: clay Bssg2 - 39 to 46 inches: clay Bkssg - 46 to 52 inches: clay 2Bkg - 52 to 60 inches: clay loam 2Btg - 60 to 72 inches: fine sandy loam 2C - 72 to 84 inches: loamy coarse sand Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 36 to 60 inches Frequency of flooding: None Frequency of ponding: Frequent Calcium carbonate, maximum in profile: 6 percent

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Salinity, maximum in profile: Nonsaline to very slightly saline (0.5 to 3.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 8.0 Available water storage in profile: High (about 9.2 inches) Interpretive groups Land capability classification (irrigated): 2e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: D

Minor Components Reyes Percent of map unit: 5 percent Landform: Salt marshes Haire Percent of map unit: 5 percent Whight Percent of map unit: 5 percent

PlD—Pleasanton-Haire complex, 9 to 15 percent slopes

Map Unit Setting National map unit symbol: hfht Elevation: 20 to 2,400 feet Mean annual precipitation: 20 to 45 inches Mean annual air temperature: 54 to 59 degrees F Frost-free period: 260 to 280 days Farmland classification: Not prime farmland

Map Unit Composition Pleasanton and similar soils: 60 percent Haire and similar soils: 30 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Pleasanton Setting Landform: Alluvial fans, terraces Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Convex, linear Parent material: Alluvium derived from sedimentary rock Typical profile H1 - 0 to 27 inches: gravelly loam H2 - 27 to 72 inches: gravelly clay loam

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Properties and qualities Slope: 9 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Moderate (about 7.2 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: C

Description of Haire Setting Landform: Terraces Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Concave Across-slope shape: Linear Parent material: Alluvium derived from sedimentary rock Typical profile H1 - 0 to 12 inches: gravelly loam H2 - 12 to 36 inches: clay H3 - 36 to 60 inches: very gravelly clay loam Properties and qualities Slope: 9 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Moderate (about 6.5 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: C

Minor Components Unnamed Percent of map unit: 10 percent

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RnA—Riverwash

Map Unit Setting National map unit symbol: hfj7 Elevation: 700 to 2,900 feet Mean annual precipitation: 8 to 15 inches Mean annual air temperature: 46 to 52 degrees F Frost-free period: 110 to 180 days Farmland classification: Not prime farmland

Map Unit Composition Riverwash: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Riverwash Setting Landform: Flood plains Parent material: Sandy and gravelly alluvium Typical profile H1 - 0 to 6 inches: very gravelly sand H2 - 6 to 60 inches: stratified very gravelly coarse sand to very gravelly sand Properties and qualities Slope: 0 to 2 percent Natural drainage class: Excessively drained Runoff class: Negligible Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to 19.98 in/hr) Depth to water table: About 0 inches Frequency of flooding: Frequent Available water storage in profile: Very low (about 1.8 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 8

Minor Components Unnamed Percent of map unit: 15 percent

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TuE—Tuscan cobbly clay loam, 9 to 30 percent slopes

Map Unit Setting National map unit symbol: hfkj Elevation: 200 to 1,000 feet Mean annual precipitation: 30 inches Mean annual air temperature: 63 degrees F Frost-free period: 225 to 250 days Farmland classification: Not prime farmland

Map Unit Composition Tuscan and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Tuscan Setting Landform: Terraces Landform position (two-dimensional): Footslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium derived from basic igneous rock Typical profile H1 - 0 to 8 inches: cobbly clay loam H2 - 8 to 15 inches: very gravelly clay H3 - 15 to 19 inches: indurated Properties and qualities Slope: 9 to 30 percent Depth to restrictive feature: 10 to 20 inches to duripan Natural drainage class: Moderately well drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat): Very low (0.00 to 0.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Very low (about 1.7 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: D Ecological site: Shallow rocky (R015XD132CA)

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Minor Components Clough Percent of map unit: 5 percent Diablo Percent of map unit: 5 percent Goulding Percent of map unit: 5 percent

YtA—Yolo clay loam, 0 to 2 percent slopes

Map Unit Setting National map unit symbol: hfkx Elevation: 30 to 400 feet Mean annual precipitation: 16 to 22 inches Mean annual air temperature: 61 degrees F Frost-free period: 240 to 260 days Farmland classification: Prime farmland if irrigated

Map Unit Composition Yolo and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Yolo Setting Landform: Alluvial fans Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium derived from sedimentary rock Typical profile H1 - 0 to 8 inches: clay loam H2 - 8 to 60 inches: loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: Rare Frequency of ponding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm)

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Available water storage in profile: High (about 9.7 inches) Interpretive groups Land capability classification (irrigated): 1 Land capability classification (nonirrigated): 3c Hydrologic Soil Group: B

Minor Components Pleasanton Percent of map unit: 5 percent Zamora Percent of map unit: 5 percent Pajaro Percent of map unit: 5 percent

ZaA—Zamora silty clay loam, 0 to 2 percent slopes

Map Unit Setting National map unit symbol: hfl3 Elevation: 30 to 1,300 feet Mean annual precipitation: 22 inches Mean annual air temperature: 61 degrees F Frost-free period: 250 to 330 days Farmland classification: Prime farmland if irrigated

Map Unit Composition Zamora and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Zamora Setting Landform: Alluvial fans Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium derived from sedimentary rock Typical profile H1 - 0 to 5 inches: silty clay loam H2 - 5 to 29 inches: clay loam H3 - 29 to 41 inches: clay loam H4 - 41 to 55 inches: sandy clay loam H5 - 55 to 60 inches: gravelly clay Properties and qualities Slope: 0 to 2 percent

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Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: High (about 10.0 inches) Interpretive groups Land capability classification (irrigated): 1 Land capability classification (nonirrigated): 3c Hydrologic Soil Group: C

Minor Components Yolo Percent of map unit: 4 percent Cole Percent of map unit: 4 percent Pajaro Percent of map unit: 3 percent Cortina Percent of map unit: 3 percent Unnamed Percent of map unit: 1 percent Landform: Depressions

20 References

American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/soils/?cid=nrcs142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http://www.nrcs.usda.gov/wps/ portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084

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United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf