November 20, 2018

Brophy and Melissa Christensen 101 Goodhill Road Kentfield, California 94904

Subject: Biological Site Assessment for 101 Goodhill Road, Kentfield, Marin County, California

Dear Mr. and Mrs. Christensen:

Huffman-Broadway Group, Inc. (HBG) has completed a Biological Site Assessment report related to various improvements proposed at a single-family home at 101 Goodhill Road in Kentfield, Marin County, California. The evaluation herein complies with requirements of Item #36, Biological Site Assessment, in Marin County’s list of project application materials, County guidelines as spelled out in the document “Preparation of Biological Site Assessments,” and clarifications provided in conversations with you regarding your understanding of the needs for a biological report on the property at this time.

The objective of this study was to provide a determination of the potential for the Study Area to support sensitive habitats as defined by state or federal regulation and/or pursuant to the California Environmental Quality Act (CEQA) including habitat suitable to support special status species of flora and fauna, and to evaluate whether the improvements to the single-family home and ancillary structures would result in significant impacts to these resources. The project architect, John Clarke of John Clarke Architects in Sausalito, requested the study in an effort to define biological constraints at the site prior to designing plans for site improvements. Our analysis included: (1) a review of the habitat characteristics of the site and species of plants and expected to utilize the site; (2) review of the California Natural Diversity Data Base (CNDDB) to determine if any populations of endangered, threatened, or rare species have occurred historically or are currently known to exist in the project vicinity; (3) a field survey of the site by an HBG biologist, and (4) an evaluation of whether the proposed project has the potential to result in impacts to sensitive habitats or special status species. The study included a general reconnaissance of the site by HBG wildlife biologist Gary Deghi on November 5, 2018.

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PROPOSED PROJECT The subject property is a 27,009 square foot (0.62-acre) property located at 101 Goodhill Road in Kentfield, Marin County, California. The site is Assessor’s Parcel Number (APN) 074-261-10 owned by Brophy and Melissa Christensen. The project site is located on the San Rafael USGS 7.5-minute topographic map. Access to the site is from a driveway directly off of Goodhill Road which can be reached using Sir Francis Drake Boulevard to College Avenue and Woodland Road. The property is at the corner of Goodhill Road with Woodland Road. Tamalpais Creek runs along the west and north sides of the property.

There is currently an existing house on the 0.62-acre lot at 101 Goodhill Road in Kentfield, Marin County. The location of the existing house and other existing features such as the garage, driveway, swimming pool and patio can be seen on the site survey prepared by William Schroeder and Associates and dated April 2014. Large-scale maps of the site survey will be submitted to the County along with this report and other materials needed for an application package for the project. The architect is awaiting definitive information regarding biological constraints at the site prior to designing site improvements, but the landowner’s project description would likely include plans to construct a new horseshoe driveway to access the front of the house, demolish the existing garage/carport, construct a new two-story addition with garage on the ground level, construct an accessory structure in the backyard, and reshape the existing pool. The current swimming pool has a slightly irregular design and the applicant would like to reshape the south side of the pool into a traditional rectangle and slightly reconfigure the patio around south side of the pool. They would also like to add an outdoor barbeque next to the pool. Once a new garage structure is constructed, portions of the existing concrete driveway closest to the creek on the north side of the property may be able to be removed and replaced with native landscaping to broaden the natural area between the driveway and the creek.

EXISTING BIOLOGICAL SETTING The description of the biological setting for the property is based on a field visit to the site by HBG Senior Environmental Scientist Gary Deghi on November 5, 2018. The survey on this date included observations of the composition and distribution of plant species, wildlife observations, identification of sensitive habitats and a comparison of site characteristics for similarity to sites known to support special status species within the area.

Tamalpais Creek runs along the west and north sides of the property. Tamalpais Creek is an intermittent stream that originates in the hills to the west of the property and flows through the Woodlands neighborhood. Tamalpais Creek eventually flows to Corte Madera Creek which flows to the San Francisco Bay. Tamalpais Creek adjacent to the subject parcel lacks qualities of a natural stream as the banks of Tamalpais Creek on the west side of the property have been reinforced with rock on both sides of the creek, and portions of the creek banks on the north side of the creek are also reinforced with rock. Nearly all canopy vegetation along the stream is composed of non-native tree species. Elevations on the 0.62-acre property range from 12 feet F:\Goodhill\Goodhill BSA 11-20-18.docx 2

msl on the northern part of the parcel to 18 feet msl on the south. Soil types on the property are Tocaloma-McMullin-Urban Land complex, 15 to 30% slopes on the western half of the property and Xerorthent-Urban land complex, 0 to 9% slopes on the eastern half of the property (USDA 2018).

Plant Communities Typically, vegetation communities and habitats at project sites are identified based on the currently accepted List of Vegetation Alliances and Associations (or Natural Communities List) (CDFW 2010). The list is based on A Manual of California Vegetation, Second Edition (Sawyer and Keeler-Wolf 2009), which is the National Vegetation Classification applied to California. The habitat list does not include Urban habitats, though Urban Habitats are included in the classification of the California Habitat Relationship System (CHRS) (Mayer and Laudenslayer 1988). The property at 101 Goodhill Road is fully developed with a single-family home and associated facilities and landscaping and is surrounded by similar uses in the residential Woodlands neighborhood. The Project Site would be considered an Urban Habitat.

Vegetation around the house at 101 Goodhill Road is entirely composed of non-native trees and shrubs planted for purposes of landscaping. Trees include magnolia (Magnolia sp.), privet (Ligustrum sp.), maples (Acer sp.), bamboo (Bambusa sp.), an apple tree (Malus sp.) and others. Other vegetation includes a rose garden, various planted non-native shrubs and groundcovers, and lawn. A single valley oak (Quercus lobata) and a number of olive (Olive sp.) trees and other vegetation can be found outside the property boundary along the Goodhill Road street frontage.

The canopy and understory vegetation along Tamalpais Creek on the north and west side of the property is almost entirely composed of non-native species. The most common tree along the stream is the non-native privet, but bamboo, acacia (Acacia sp.), and planted fruit trees (Prunus sp.) are also common. Other non-native species include Monterey pine (Pinus radiata), pyracantha (Pyracantha sp.), bottlebrush (Callistemon sp.), and German ivy (Delairea odorata). Several native riparian trees are present along the stream adjacent to the property including one Coast live oak (Quercus agrifolia), and several small California bays (Umbellularia californica), white alder (Alnus rhombifolia) and box elder (Acer negundo), but these trees comprise a small portion of the tree canopy. Approximately 10 redwood (Sequoia sempervirens) trees present along the creek on the north side of the property, could be native trees but may have also been planted. Understory shrubs are mostly non-native French broom (Genista monspessulana), but a couple of small patches of native California blackberry (Rubus ursinus) can be found. Other vegetation adjacent to the stream bank include non-native grasses such as hedgehog dogtail (Cynosurus echinatus), wild oat (Avena fatua) and veldt grass (Ehrharta erecta). Small areas within the stream are vegetated with vegetation adapted for life in saturated soil conditions such as smartweed (Polygonum sp.) and tall flat-sedge (Cyperus eragrostis).

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Animal Populations The habitats in the immediately surrounding area support a number of wildlife species typically found in urban settings in this part of Marin County. Trees and other vegetation on the property and within the adjacent riparian corridor provide nesting and roosting sites for birds, and cover and foraging habitat for species of birds, mammals, reptiles and amphibians.

A number of wildlife species were documented at the site and the immediate vicinity during the field review conducted by Gary Deghi of HBG on November 5, 2018. All species documented are common to abundant in the region and would be expected in the habitats present at the site. Most of the documented species were birds that are expected in the habitat type present. Species documented at or near the site during the brief field reconnaissance included Anna’s hummingbird (Calypte anna), acorn woodpecker (Melanerpes formicivorus), California scrub-jay (Aphelocoma californica), common raven (Corvus corax), American robin (Turdus migratorius), chestnut-backed chickadee (Poecile rufescens), and house finch (Haemorhous mexicanus). Turkey vultures (Cathartes aura) were observed flying overhead during the site visit.

Observed amphibians included California slender salamander (Batrachoseps attenuatus) (found under a log by the creek). Other amphibians may include Pacific treefrog (Pseudacris regilla), arboreal salamander (Aneides lugubris), and western toad (Bufo boreas). Reptiles may include Western fence lizard (Sceloperus occidentalis) and Coast garter snake (Thamnophis elegans terrestris). Scat demonstrating the presence of mule deer (Odocoileus hemionus) was observed; other mammals expected in the area would include those adapted to urban environments including Virginia opossum (Didelphis virginiana), deer mouse (Peromyscus maniculatus), striped skunk (Mephitis mephitis), and raccoon (Procyon lotor), among others.

Sensitive Habitats

Regulatory Requirements Sensitive habitats are those habitats which have been identified by local, state, or federal agencies as areas which provided special functions or values. These habitats are subject to regulation under various local, state, and federal regulations such as the following:

Waters of the United States. The Department of the Army, acting through the U.S. Army Corps of Engineers (Corps), has the authority to permit the discharge of dredge or fill material in waters of the U.S. under Section 404 of the Clean Water Act (CWA). Waters of the U.S. include both wetlands and “other waters of the U.S.” Wetlands and other waters of the U.S. are described by U.S. Environmental Protection Agency (EPA) and Corps regulations (40 CFR § 230.3(s) and 33 CFR § 328.3(a), respectively). EPA and the Corps define wetlands as “…those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions” (EPA regulations at 40 CFR § 230.3(t); Corps regulations at 33 CFR § 328.3(b)). Both natural and manmade wetlands and other waters (not vegetated by a dominance of rooted emergent vegetation) are subject to

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regulation. The geographic extent of wetlands is defined by the collective presence of a dominance of wetland vegetation, wetland hydrology conditions, and wetland soil conditions as determined following the USACE’ 1987 Wetlands Delineation Manual (1987 Manual); the USACE’ 2008 Regional Supplement to Corps of Engineers Wetland Delineation Manual: Arid West, Version 2.0 (Arid West Regional Supplement); and supporting guidance documents. The geographic extent of other waters of the U.S. is defined by an ordinary high water mark (OHWM) in non-tidal waters (33 CFR. §328.3(e)) and by the High Tide Line within tidal waters (33 CFR. §328.3(d)).

Waters of the State. Waters of the State are defined more broadly than “waters of the US” to mean “any surface water or groundwater, including saline waters, within the boundaries of the state” (Water Code section 13050(e)). Examples include, but are not limited to, rivers, streams, lakes, bays, marshes, mudflats, unvegetated seasonally ponded areas, drainage swales, sloughs, wet meadows, natural ponds, vernal pools, diked baylands, seasonal wetlands, and riparian woodlands. Waters of the State include all waters within the state’s boundaries, whether private or public, including waters in both natural and artificial channels. They include all “waters of the United States”; all surface waters that are not “waters of the United States, e.g. non-jurisdictional wetlands; groundwater; and the territorial seas. The State Water Quality Control Board (SWQCB) and its Regional Boards, including the San Francisco Bay Regional Water Quality Control Board (SFBRWQCB), routinely rely on the USACE/US EPA jurisdictional determinations as they have no adopted methodology for the identification and delineation of wetlands or other waters of the State. However, as a matter of policy the SWQCB/SFBRWQCB consider wetlands and waters determined non-jurisdictional by the USACE/USEPA under SWANCC or Rapanos guidance to remain jurisdictional as waters of the State subject to SWQCB/SFBRWQCB jurisdiction.

California Department of Fish and Wildlife Regulations. The California Department of Fish and Wildlife (CDFW) regulates lakes and streams under Section of 1602 of the California Fish and Game Code (FGC). CDFW’s regulations implementing the FGC define the relevant rivers, streams and lakes over which the agency has jurisdiction to constitute “all rivers, streams, lakes, and streambeds in the State of California, including all rivers, streams and streambeds which have intermittent flows of water.” (Title 14 California Code of Regulations [CCR] § 720). The CDFW takes jurisdiction under its Lake and Streambed Alteration Agreement Program for any work undertaken in or near a river, stream, or lake that flows at least intermittently through a bed or channel. The CDFW does not have a methodology for the identification and delineation of the jurisdictional limits of streams except for the general guidance provided in A Field Guide to Lake and Streambed Alteration Agreements, Section 1600-1607 California Fish and Game Code (CDFG 1994). In making jurisdictional determinations, CDFW staff typically rely on field observation of physical features that provide evidence of water flow through a bed and channel such as observed flowing water, sediment deposits and drift deposits and that the stream supports fish or other aquatic life. Riparian habitat is not specifically defined by the FGC but CDFW takes jurisdiction over areas within the flood plain of a body of water where the

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vegetation (grass, sedges, rushes, forbs, shrubs, and trees) is supported by the surface or subsurface flow.

Sensitive plant communities are those natural plant communities identified in local or regional plans, policies, ordinances, regulations, or by the CDFW which provide special functions or values. The CDFW natural plant communities considered sensitive are those CDFW ranks as ‘threatened’ or ‘very threatened’ and keeps records of occurrences of these sensitive communities in the CNDDB. All known occurrences of sensitive habitats are mapped onto 7.5- minute USGS topographic quadrangle maps maintained by the CNDDB. Sensitive plant communities are also identified by CDFW on their List of California Natural Communities Recognized by the CNDDB. Impacts to sensitive natural communities must be considered and evaluated under CEQA.

Marin County Requirements. Marin Countywide Plan requirements pertaining to sensitive habitats, particularly requirements associated with the presence of Stream Conservation Areas (SCAs) and Wetland Conservation Areas (WCAs), are applicable countywide. Policies of the Marin County General Plan related to Stream Conservation Areas include the establishment buffer zones called Stream Conservation Areas for the protection of riparian systems, streams, and related habitats. A Stream Conservation Area consists of a watercourse, surrounding banks, and a strip of land (a riparian setback) extending laterally from the top of both banks. Only certain uses are allowed in SCAs such as necessary water supply and flood control projects, improvements to fish and wildlife habitat, grazing, agriculture, maintenance of channels for erosion control, water monitoring installations, and trails. Prohibited uses include, but are not limited to, roads and utility lines (except at crossings), confinement of livestock, dumping, use of motorized vehicles, and new structures.

The Countywide Plan states that an SCA is established to protect the active channel, water quality and flood control functions and associated fish and wildlife habitat value along streams. SCAs can be established along perennial, intermittent and ephemeral streams, and are to encompass jurisdictional wetlands or unvegetated other waters within the stream channel. The Countywide Plan indicates that development shall be set back to protect the stream and provide an upland buffer. Best management practices are to be adhered to in all designated SCAs.

Relevant definitions and policies of Marin Countywide Plan Policy 4.1 related to riparian corridors applicable to the Project Site include the following:

• Definitions of perennial, intermittent and ephemeral stream o Ephemeral stream- “a watercourse that carries only surface runoff and flows during and immediately after periods of precipitation.” o Intermittent stream- “a watercourse that is temporally intermittent or seasonal and that flows during the wet season, continues to flow after the period of precipitation, and ceases surface flow during at least part of the dry season.

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Intermittent streams are typically shown as a dashed blue line on USGS quadrangle maps.” o Perennial stream- “a watercourse that flows throughout the year (except for infrequent or extended period of drought), although surface water flow may be temporarily discontinuous in some reaches of the channel, such as between pools, typically shown as a solid blue line on USGS quadrangle maps.” • For a City-Centered Corridor: ”For parcels between 2 and 0.5 acres in size, provide a minimum 50-foot development setback on each side of the top of bank.” • Allowable uses in SCAs in any corridor consist of the following (only three stated below out of seven mentioned in the Plan are potentially relevant to the proposed project), provided they conform to zoning and all relevant criteria and standards for SCAs: o “Existing permitted or legal nonconforming structures or improvements, their repair, and their retrofit within the existing footprint; o Projects to improve fish and wildlife habitat; o Driveway, road and utility crossings, of no other location is feasible.”

Findings During the November 5, 2018 field review, HBG documented the presence of an intermittent stream (Tamalpais Creek) that originates in the hills to the west of the property and runs along the west and north sides of the property. Tamalpais Creek is noted on the San Rafael USGS 7.5- minute quadrangle by a dashed line, indicating that Tamalpais Creek in this area is an intermittent stream. Tamalpais Creek bordering the site would be considered to be within a City-Centered Corridor as defined by the Marin Countywide Plan, thus the 0.62-acre lot, being between 2 and 0.5 acres in size, would require a minimum of 50-foot setback from the top of bank of the stream. The top of bank of Tamalpais Creek was surveyed as shown on the site survey dated April 2014. Field review by HBG on November 5, 2018 found the mapped location of top of bank on the survey to be accurate. Based on results of this Biological Site Assessment report, the applicant’s architect will design the various elements of the project to have a 50- foot setback from the top of bank of the stream as shown on the survey.

During the field review, HBG also conducted an initial reconnaissance of the project area to evaluate the presence of wetlands and other “waters of the U.S.” potentially subject to federal jurisdiction under the Clean Water Act or state or local jurisdiction under the Porter-Cologne Act. The review included an investigation of existing land forms, vegetation, hydrology, and soil conditions, but consisted of a preliminary review of the area for wetland habitats. No areas within the site were found that would be considered wetlands or waters pursuant to state or federal criteria. The nearest jurisdictional areas would be off-site within the wetted portion of Tamalpais Creek in areas below the Ordinary High Water mark.

Special Status Species Sensitive species include those species listed by the federal and state governments as endangered, threatened, or rare or candidate species for these lists. Endangered or threatened species are protected by the federal Endangered Species Act of 1973 as amended, the California F:\Goodhill\Goodhill BSA 11-20-18.docx 7

Native Plant Protection Act of 1977, and the California Endangered Species Act of 1970. The California Environmental Quality Act (CEQA) provides additional protection for unlisted species that meet the “rare” or “endangered” criteria defined in Title 14, California Code of Regulations Section 15380.

CDFW maintains records for the distribution and known occurrences of sensitive species and habitats in the California Natural Diversity Database (CNDDB). The CNDDB is organized into map areas based on 7.5-minute topographic maps produced by the US Geological Survey. All known occurrences of sensitive species and important natural communities are mapped on the quadrangle maps. The database gives further detailed information on each occurrence, including specific location of the individual, population, or habitat (if possible) and the presumed current state of the population or habitat. The project site is located on the San Rafael 7.5-minute USGS quadrangle. A search of the CNDDB for records of occurrence of special status animals and plants and natural communities within this quadrangle indicated that a number of special status species have been known to occur within 10 miles of the Project Site, though none have been reported on the Project Site itself.

Table 1 presents a list of special status animals and plants that have been reported in the project vicinity. The table includes an evaluation of the potential for sensitive species to occur at the site.

Special Status Plant Species A list of special status plants with potential to occur on the property was developed from the CDFW’s California Natural Diversity Data Base. A complete list of special status plant species occurring in the vicinity of the property is included in Table 1. The table includes all plant species mentioned in the CNDDB known from the west side of San Francisco Bay within approximately 5 to 10 miles of the site. Special status plant species include: (i) species that are listed or proposed for listing as threatened or endangered under the federal Endangered Species Act; (ii) species that are listed, or proposed for listing by the state of California as threatened or endangered under the California Endangered Species Act; (iii) plants considered by the California Native Plant Society (CNPS) to be rare, threatened, or endangered in California and elsewhere; and (iv) plant species that meet the definition of rare or endangered under CEQA.

All special status plant species listed in Table 1 that are found in this part of Marin County require habitat conditions that are not found at 101 Goodhill Road. The building site at 101 Goodhill Road has been previously disturbed, developed with a single-family house and associated landscaping, and provides no habitat for special status plants. The development site at 101 Goodhill Road contains no habitat that would be suitable to support any special status species of plant.

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Special Status Species Animal species noted in the CNDDB as occurring west of San Francisco Bay and within a 5 to 10- mile radius of the site, or that are known to occur in the general vicinity based on the knowledge of HBG biologists, are discussed in Table 1. One special status species known to nest in woodlands in southern Marin County is the federally-listed threatened Northern spotted owl (Strix occidentalis caurina). This species is discussed in greater detail below. None of the other animal species discussed in the table have the potential to occur on the site. This finding is made based on the habitat requirements of species listed in the table, field review of habitats present at the site and the immediate vicinity, and an evaluation of the suitability of the on-site Urban habitat to support these species.

The Northern spotted owl was listed by the USFWS as a threatened species on June 22, 1990. Northern spotted owls reach the southern limit of their range in Marin County, California. In the northern portion of their range, Northern spotted owls are typically found in mature coniferous forests usually from 150 to 200 years old. In Marin County they reside in second growth Douglas-fir (Pseudotsuga menziesii), coast redwood (Sequoia sempervirens), bishop pine (Pinus muricata), mixed conifer-hardwood and evergreen hardwood forests with a nearly closed canopy and moderate to heavy undergrowth and much woody debris. Dusky-footed woodrat is the preferred prey for Northern spotted owl in Marin and Sonoma Counties (Shuford 1993, Evens 2008). Nesting Northern spotted owls have been found throughout forested habitats in Marin County and use a variety of tree species for nesting. This owl species does not construct a nest so existing nest structures or cavities must be available. Most of these owl territories in Marin are in canyon bottoms or mid slope locations on the more mesic north-facing slopes or the leeward slope of ridges where there is higher precipitation, protection from onshore wind and weather, and fairly dense vegetative cover (Evens 2008).

HBG conducted a review of National Park Service data regarding known spotted owl nesting territories in the vicinity of the project and data available from the CNDDB. The data indicates the location of known activity centers for nesting pairs of the species and locations in the vicinity of the nest sites where occurrences of Northern spotted owl individuals have been documented. This information revealed that the nearest activity center of known territories of Northern spotted owl occur about 4,000 feet (about 0.75 mile) from the property; the nearest sighting of an individual Northern spotted owl foraging away from the nest has been documented approximately 3,750 feet (just over 0.7 mile) from the property.

BIOLOGICAL IMPACTS

Standards of Significance According to CEQA Guidelines (Appendix G), the project would be considered to have a significant impact on biological resources if it would:

a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special

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status species in local or regional plans, policies, or regulations, or by the California Department of Wildlife and Game or U.S. Fish and Wildlife Service.

b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Wildlife or US Fish and Wildlife Service.

c) Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means.

d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites.

e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance.

f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan.

Impacts

1) Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? The proposed project would not result in any significant adverse impacts on special status plant or animal species. The project would not substantially reduce the number or restrict the range of a rare, endangered or threatened species of fauna. None of the special status plant or animal species discussed in Table 1 have the potential to occur at the construction site. Therefore, no impacts to special status species of plant or animal would occur due to construction proposed at the site. Additional detail on key species is provided below.

HBG considered the potential for harassment to Northern spotted owl in accordance with the U.S. Fish and Wildlife Service 2006 memorandum “Transmittal of Guidance, Estimating the Effects of Auditory and Visual Disturbance to Northern Spotted Owls and Marbled Murrelets in Northwestern California.” Given the anticipated sound level generated by the type of construction (moderate, limited ground disturbance or foundation work, use of some power tools) and the existing ambient sound levels (those typical of residential areas), the models used by the USFWS indicate that impacts to Northern spotted owl would only occur if the F:\Goodhill\Goodhill BSA 11-20-18.docx 10

species was nesting fairly close to construction activity (auditory harassment would only occur within about 30m and visual harassment up to a maximum of 100m from the construction site). The nearest known nesting activity center for Northern spotted owl is approximately 0.75 miles from the property, well beyond the distance where there could be any impact on nesting by the species. It can definitively be stated that impacts to Northern spotted owl would not occur.

2) Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, or regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? Tamalpais Creek originates in the hills to the west of the property and then passes by two sides of the subject property before eventually draining into Corte Madera Creek and then the San Francisco Bay. Tamalpais Creek bordering the site would be considered to be a City-Centered Corridor, thus the 0.62-acre lot, being between 2 and 0.5 acres in size, would require a minimum of 50-foot setback from the top of bank of the stream. The top of bank of Tamalpais Creek was surveyed as shown on the survey of the existing site dated April 2014. The applicant’s architect will design the various elements of the project to have a 50-foot setback from the top of bank of the stream (setback also shown on the site survey). All new improvements and structures (new driveway, the new two-story addition with garage, and the new backyard ancillary building) will be designed to be at least 50 feet from the top of bank of Tamalpais Creek and beyond the 50-foot setback forming the SCA. The project would therefore be in compliance with the SCA requirements of the Marin Countywide Plan.

The current swimming pool (a previously-permitted use within the 50-foot creek setback) is of an irregular shape (wider at the west end nearest to Tamalpais Creek than it is at the east end nearest to the existing house, as can be seen on the site survey). There is the possibility that the landowners may wish to modify the existing swimming pool from its irregular shape to form a more traditional rectangular-shaped pool and at the same time reconfigure the patio on the south side of the pool and add an outdoor barbeque. No work would be proposed any closer to the top of bank of the creek than the location of the existing pool and patio. Marin Countywide Plan Policy 4.1 states that allowable uses in SCAs in any corridor include “existing permitted or legal nonconforming structures or improvements, their repair, and their retrofit within the existing footprint” provided they conform to zoning and all relevant criteria and standards for SCAs. Any pool work would essentially be conducted within the existing footprint of the pool and patio, although the final pool/patio configuration within the creek setback after construction could be less in areas nearest to the creek and slightly greater in areas farthest from the creek. The barbeque would also be added within the existing footprint of the existing patio. From a biological standpoint, these modifications could be considered as slightly beneficial as the area nearest the creek could have more planted area, with the area farthest from the creek having slightly more patio. From a biological standpoint the pool work could be considered in compliance with Policy 4.1.

The existing driveway into the property is partly within the 50-foot setback from Tamalpais Creek. The removal of the existing garage and replacement with a two-story structure including F:\Goodhill\Goodhill BSA 11-20-18.docx 11

a new garage, would occur beyond the 50-foot setback as shown on the site survey. Once the new two-story structure (and relocated driveway) is in place, it may be possible to remove some of the existing concrete driveway and replace it with native vegetation that would have the effect of restoring that portion of the driveway to natural conditions and improving that area of the creek setback to perform functions such as removing contaminants in stormwater or providing wildlife habitat. Though such work would take place within the 50-foot creek setback it would be considered as a project “to protect fish and wildlife habitat” or work associated with “driveways, road and utility crossings…” that would be an allowed use within an SCA pursuant to Policy 4.1. The extent that a portion of the driveway may be removed and planted with native vegetation will not be known until final plans are developed, but any such work up to the edge of the existing driveway would be consistent with Policy 4.1 and would be considered a beneficial impact of the project.

The stream would not be directly or indirectly affected by construction necessary for the project. During all activities involving land disturbance, the applicant will require the contractor to follow all applicable best management practices from the California Stormwater Quality Best Management Practices Handbook for Construction Activities. Such best management practices would be employed during work associated with reshaping the existing pool or restoring an area of the existing driveway, which are within the 50-foot creek setback. With the implementation of best management practices, including the use of straw wattles, covering of stockpile areas and other practices and provision of a 50-foot setback from the intermittent stream for all other aspects of the work, there would be little possibility of siltation within stormwater runoff that could adversely affect the water quality of the stream.

3) Would the project have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? As no wetlands or waters of the U.S. or State of California are found on the property, it can be definitively stated that the proposed project would not result in filling or direct impacts to any area that would be subject to jurisdiction of federal agencies including the Clean Water Act jurisdiction of the USACE, state jurisdiction of the Porter-Cologne Act, or local regulations including the Marin Countywide Plan.

4) Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? The proposed work would be conducted within a previously-disturbed development site. No significant habitat for any animal species would be affected by this work. Although a number of bird and other animal species were observed on the property and in the immediate vicinity during the brief field survey, the construction of the improvements within a previously disturbed site would not result in substantial change to animal populations at the site. Habitats for various species can be found in the stream adjacent to the development site, but the stream would not be directly or indirectly affected by construction necessary for the project, as best F:\Goodhill\Goodhill BSA 11-20-18.docx 12

REFERENCES

Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, and T.J. Rosatti, editors. 2012. The Jepson Manual. Vascular Plants of California, Second Edition, Thoroughly Revised and Expanded. University of California Press, Berkeley, California.

California Department of Fish and Wildlife. 2018. Special Animals List For State of California produced by Biogeographic Data Branch, California Natural Diversity Database, California Department of Fish and Wildlife. List dated July 2018.

California Department of Fish and Wildlife. 2018. Natural Heritage Division, Natural Diversity Data Base for San Rafael 7.5 Minute USGS Quadrangle Map and surrounding areas. November 2018.

California Department of Fish and Wildlife. 2010. List of Vegetation Alliances and Associations. Vegetation Classification and Mapping Program. September. http://www.dfg.ca.gov/biogeodata/vegcamp/natural_comm_list.asp.

California Department of Fish and Wildlife. 2013. State and Federally Listed Endangered, Threatened, and Rare Plants of California. April. http://www.dfg.ca.gov/biogeodata/cnddb/pdfs/TEPlants.pdf.

California Native Plant Society, Rare Plant Program. 2014. Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed 04 April 2014].

Evens, J. 2008. The Natural History of the Point Reyes Peninsula. University of California Press. 366 pp.

Marin County. 2007. Marin Countywide Plan. Prepared by the Marin County Community Development Agency. November 6, 2007.

Mayer, E. Kenneth and William F. Laudenslayer, Jr., (Eds.). 1988. A Guide to Wildlife Habitats of California.

National Geographic Society. 2017. Field Guide to the Birds of North America. Seventh edition. National Geographic Society. Washington, D.C.

Reid, Fiona A. 2006. Mammals of North America. Peterson Field Guides. Fourth Edition. Houghton Mifflin Co., Boston.

Sawyer, J. O., and T. Keeler-Wolf. 2009. A Manual of California Vegetation. Second Edition. In cooperation with The Nature Conservancy and the California Department of Fish and Game. California Native Plant Society. Sacramento, California.

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Shuford, W.D. 1993. Marin County Breeding Bird Atlas. Bushtit Books, Bolinas, California. 479 pp.

Sibley, David A. 2014. The Sibley Guide to Birds. Second Edition. National Audubon Society. Chanticleer Press, Inc. New York, N.Y. 624 pp.

Stebbins, R.C. 2003. Western Reptiles and Amphibians. Peterson Field Guides. Houghton Mifflin Co., Boston. Third edition.

U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetland Delineation Manual, Technical Report Y-87-1. Prepared by the Environmental Laboratory, Department of the Army, Waterways Experiment Station, Vicksburg, Miss.

U.S. Army Corps of Engineers. 2008. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-08-28. Vicksburg, MS: U.S. Army Engineer Research and Development Center.

U.S. Department of Agriculture, Natural Resources Conservation Service [NRCS]). 2018. Web Soil Survey, Marin County. Natural Cooperative Soil Survey. November 2018.

U.S. Fish and Wildlife Service. 2006. Transmittal of Guidance, Estimating the Effects of Auditory and Visual Disturbance to Northern Spotted Owls and Marbled Murrelets in Northwestern California. Arcata Fish and Wildlife Office, Arcata, California. July 31, 2006.

U.S. Fish and Wildlife Service. 2015. Listings and occurrences for California. Federally listed threatened and endangered plant and animal species in California. http://ecos.fws.gov/tess_public/pub/stateListingAndOccurrenceIndividual.jsp?state=CA

U.S. Fish and Wildlife Service. 2014. Species proposed for listing in California based on published population data. http://ecos.fws.gov/tess_public/pub/stateListingIndividual.jsp?state=CA&status=propos ed. U.S. Fish and Wildlife Service. 2014. Candidate species in California based on published population data. http://ecos.fws.gov/tess_public/pub/stateListingIndividual.jsp?state=CA&status=candid ate.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6

ANIMALS Tomales isopod --/-- Inhabits localized freshwater ponds or streams Not present. Suitable habitat not (Caecidotea tomalensis) with still or near-still water in several Bay Area present at the site. Counties. Obscure Bumble Bee --/-- Found in Coastal areas from Santa Barbara Not present. Suitable habitat not (Bombus caliginosus) County north to Washington State. Food plant present at the site. genera include Baccharis, Cirsium, Lupinus, Lotus, Grindelia and Phacelia. Western Bumble Bee --/-- This species was once common and widespread, Not present. Suitable habitat not (Bombus occidentalis) but the species has declined precipitously from present at the site. Central California to Southern British Columbia, perhaps from disease. Sandy beach tiger beetle --/-- Inhabits areas adjacent to non-brackish water Not present. Suitable habitat not (Cicindela hirticollis gravida) along the coast of California from San Francisco present at the site. Bay northern Mexico. Found in clean, dry, light- colored sand in the upper zone, and subterranean larvae prefer moist sand not affected by wave action. Tiburon micro-blind harvestman --/-- Open hilly grassland habitat in areas of Not present. Suitable habitat not (Microcina tubruona) serpentine. Found on the undersides of present at the site. serpentine rocks near permanent springs. Ricksecker’s water scavenger beetle --/-- Known from aquatic habitats in the San Not present. Suitable habitat not (Hydrochara rickseckeri) Francisco Bay Area. present at the site. California Freshwater Shrimp FE/CE Found in low elevation, low gradient streams Not present. Suitable habitat not (Syncaris pacifica) where riparian cover is moderate to heavy. present at the site. Prefers shallow pools removed from the main flow. In winter, prefers undercut banks with exposed roots; in summer low flows, clings to submerged portions of overhanging tree shrub branches.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Monarch Butterfly --/CR Winter roost sites extend along the coast from Not present. No suitable habitat (Danaus plexippus) northern Mendocino to Baja California. Roosts exists at the site to support an (Wintering sites) are typically located in wind-protected groves of overwintering site. Eucalyptus, Monterey pine or Monterey cypress, with nectar and water sources nearby. San Bruno elfin butterfly FE/-- Inhabits rocky outcrops and cliffs in coastal Not present. Suitable habitat not (Callophrys mossii bayensis) scrub on the San Francisco Peninsula, also present at the site. known from Marin County. Distribution matches that of the host plant, broadleaf stonecrop (Sedum spathulifoluim). Marin elfin butterfly --/-- Found only in redwood forests in Marin County. Not present. Suitable habitat not (Incisalia mossii) Larvae collected and reared on broadleaf present at the site. stonecrop (Sedum spathulifolium). Mission Blue Butterfly FE/-- Inhabits grasslands mainly on the San Francisco Not present. Suitable habitat not (Plebejus icarioides missionensis) Peninsula. Larval host plants are Lupinus present at the site. albifrons, L. variicolor, and L. formosus. Opler's Longhorn --/-- Serpentine grassland; larva feed on Not present. Suitable habitat not ( oplerella)) californicus. present at the site. California brackishwater snail or --/-- Permanently submerged areas of coastal Not present. Suitable habitat not mimic tryonia lagoons, estuaries and salt marshes, from present at the site. (Tryonia imitator) Sonoma County to San Diego County. Marin hesperian --/-- Found in moist spots in coastal brushfields and Not present. Suitable habitat not (Vespericola marinensis) chaparral vegetation in Marin County. Found present at the site. under leaves of cow-parsnip, around spring seeps, in leafmold along streams and in alder woods and mixed evergreen forest. Tomales roach -/CSC Tributaries to Tomales Bay. Occurs in Olema Not present. Suitable habitat not (Lavinia symmetricus) Creek. present at the site.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Tidewater Goby FE/-- Brackish water habitats along the California Not present. Suitable habitat not (Eucyclogobius newberryi) Coast from Agua Hedionda Lagoon, San Diego present at the site. County to the mouth of the Smith River. Found in shallow lagoons and lower stream reaches, they need fairly still but not stagnant water and high oxygen levels. Coho Salmon – central California ESU FE/CE Requires beds of loose, silt-free, coarse gravel Not present. Suitable habitat not (Oncorhynchus kisutch) for spawning. Also need cover, cool water and present at the site. sufficient dissolved oxygen. Steelhead – Central CA Coast ESU FT/CSC Well-oxygenated streams with riffles; loose, silt- Not present. Suitable habitat not (Oncorhynchus mykiss) free gravel substrate. Also need cover, cool present at the site. water and sufficient dissolved oxygen. Longfin Smelt FC/CT, CSC In California, Longfin Smelt have been Not present. Suitable habitat not (Spirinchus thaleichthys) commonly collected from San Francisco Bay, Eel present at the site. River, Humboldt Bay and Klamath River. As they mature in the fall, adults found throughout San Francisco Bay migrate to brackish or freshwater in Suisun Bay, Montezuma Slough, and the lower reaches of the Sacramento and San Joaquin Rivers. Spawning probably takes place in freshwater. California Giant Salamander --/CSC Known from wet coastal forests near streams Not present. Suitable habitat not (Dicamptodon ensatus) and seeps from Mendocino County south to present at the site. Monterey County and east to Napa County. Aquatic larvae are found in cold, clear streams, occasionally in lakes and ponds. Adults are found in wet forests under rocks and logs near streams and lakes.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 California Red-legged Frog FT/CSC Mostly found in lowlands and foothills in/near Not present. Suitable habitat not (Rana draytonii) permanent sources of deep water but will present at the site. disperse far during and after rain. Prefers shorelines with extensive vegetation. Requires 11-20 weeks of permanent water for larval development and requires access to aestivation habitat. Foothill Yellow-legged Frog --/CSC Partly-shaded, shallow streams and riffles with Not present. Suitable habitat not (Rana boylii) a rocky substrate in a variety of habitats. Need present at the site. at least some cobble-sized substrate for egg- laying; larvae need at least 15 weeks to attain metamorphosis. Western Pond Turtle --/CSC Aquatic turtle of ponds, marshes, rivers, Not present. Suitable habitat not (Emys marmorata) streams, and irrigation ditches with aquatic present at the site. vegetation. Needs basking sites and suitable upland habitat for egg-laying (sandy banks or grassy open fields). Double-crested cormorant --/WL Colonial nester on coastal cliffs and offshore Rookery not present. Suitable (Phalacrocorax auritus) [rookery site] islands and along lake margins in the interior of nesting habitat not present on site. the state. Nests along coast on sequestered islets, usually on ground with sloping surface, or in tall trees along lake margins. Great Blue Heron --/-- Colonial nester in tall trees, cliffsides, and Not present. Suitable habitat for a (Ardea herodius) [Nesting] sequestered spots on marshes. Rookery sites rookery is not present at the site. are in close proximity to foraging areas such as marshes, lake margins, tide-flats, rivers and streams, wet meadows. Black-crowned night-heron --/-- Colonial nester, usually in trees but occasionally Rookery not present. Suitable (Nycticorax nycticorax) [Nesting] in tule patches. Rookery sites are located nesting habitat not present on site. adjacent to foraging areas including lake margins, mud-bordered bays and marshy spots.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Great Egret --/-- Colonial nester in tall trees, cliff sides, and Not present. Suitable habitat for a (Ardea alba) sequestered spots on marshes. Rookery sites in rookery is not present at the site. (Rookery) close proximity to foraging areas: marshes, lake margins, tide-flats, rivers and streams, wet meadows. Snowy Egret --/-- Colonial nester, with nest sites situated in Not present. Suitable habitat for a (Egretta thula) protected beds of dense tules. Rookery sites rookery is not present at the site. [Rookery] situated close to foraging areas: marshes, tidal- flats, streams, wet meadows, and borders of lakes. Northern Harrier --/CSC Coastal salt marsh and freshwater marsh; nests Not present. Suitable nesting habitat (Circus cyaneus) [Nesting] and forages in grasslands; nests on ground in not present at the site. shrubby vegetation, usually at marsh edge. White-tailed Kite --/CFP Open grassland and agricultural areas Not present. Suitable nesting habitat (Elanus caeruleus) [nesting] throughout Central California. not present at the site. Cooper’s Hawk --/WL Nests primarily in deciduous riparian forests; Not present. Suitable nesting (Accipiter cooperii) [nesting] forages in open woodlands. habitat not present on site. Species likely forages on or near the site, especially in winter. Golden Eagle BCC/FP, WL Typically frequents rolling foothills, mountain Not present. Suitable habitat is not (Aquila chrysaetos) areas, sage-juniper flats and desert. present at the site. [nesting and wintering] American Peregrine Falcon Delisted,BCC/Delisted, Nests in woodland, forest and coastal habitats, Not present. Suitable habitat not (Falco peregrinus anatum) FP on cliffs or banks, and usually near wetlands, present at the site. lakes, rivers, sometimes on human-made structure. In non-breeding seasons found in riparian areas and coastal and inland wetlands. Northern Spotted Owl FT/-- In Marin County Northern spotted owls reside Not present. Suitable habitat not (Strix occidentalis caurina) in second growth Douglas-fir, coast redwood, present at the site. bishop pine, mixed conifer-hardwood, and evergreen hardwood forests. Have been found throughout forested habitats in Marin and use a variety of tree species for nesting.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Ridgway’s (California clapper) Rail FE/CE,FP Found in saltwater marshes traversed by tidal Not present. Suitable habitat not (Rallus obsoletus) sloughs in the vicinity of San Francisco Bay; present at the site. associated with abundant growths of pickleweed; feeds on mollusks obtained from mud-bottomed sloughs. California Black Rail BCC/CT,FP Mainly inhabits salt-marshes bordering larger Not present. Suitable habitat not (Laterallus jamaicensis coturniculus) bays. Occurs in tidal salt marsh with dense present at the site. growths of pickleweed; also occurs in freshwater and brackish marshes. Western Snowy Plover FT,BCC/CSC Found on sandy beaches or marine and Not present. Suitable habitat not (Charadrius alexandrinus nivosus) estuarine shores; also salt pond levees and present at the site. (nesting) shores of large alkali lakes; requires sandy, gravelly or friable soil substrate for nesting. Short-eared Owl --/CSC Found in marshes, both freshwater and salt; Not present. Suitable habitat not (Asio flammeus) lowland meadows; irrigated alfalfa fields. Tule present at the site. (nesting) patches/full grass needed for nesting and daytime seclusion. Nests on dry ground in a depression concealed in vegetation. Burrowing Owl (Athene cunicularia) BCC/CSC Found in open dry annual or perennial Not present. Suitable habitat not grasslands, deserts and scrublands present at the site. characterized by low growing vegetation. This species is a subterranean nester, dependent upon burrowing mammals, most notably the California ground squirrel. Black swift BCC/CSC Breeds in small colonies on cliffs behind of Not present. Suitable habitat not (Cypseloides niger) adjacent to waterfalls in deep canyons and present at the site. seabluffs above the surf. Forages widely. Loggerhead Shrike (Lanius BCC/CSC Habitat includes open areas such as desert, Not present. Suitable habitat not ludovicianus) grasslands and savannah. Nests in thickly present at the site. foliaged trees or tall shrubs. Forages in open habitats, which contain trees, fence posts, utility poles, and other perches.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Saltmarsh Common Yellowthroat BCC/CSC Requires thick continuous cover down to water Not present. Suitable habitat not (Geothlypis trichas sinuosa) surface for foraging; tall grasses, tule patches, present at the site. willows for nesting. Yellow Warbler BCC/CSC Breeds in deciduous riparian woodlands, Not present. Suitable habitat not (Dendroica petechia) widespread during fall migration. present at the site. [nesting] American Badger --/CSC Drier open stages of most shrub, forest, and Not present. Suitable habitat not (Taxidea taxus) herbaceous habitats; needs sufficient food, present at the site. friable soils and open, uncultivated ground. Point Reyes mountain beaver -/CSC Coastal area of Point Reyes in areas of Not present. Suitable habitat not (Aplodontia rufa phaea) springs or seepages. North facing slopes of present at the site. hills and gullies in areas overgrown with sword ferns and thimbleberries. Pallid Bat --/CSC Roosts primarily in oak woodland and Not present. Suitable habitat not Antrozous pallidus ponderosa pine habitats; forages in open areas. present at the site. Hoary Bat --/-- Prefers open habitats with access to trees for Not present. Suitable habitat not (Lasuirus cinereus) cover and open areas or habitat edges for present at the site. feeding. Roosts in dense foliage of medium to large trees. Western red bat --/CSC Roosting habitat includes forests and Not present. Suitable habitat not (Lasiurus blossevillii) woodlands from sea level up through mixed present at the site. conifer forests. Feeds over a wide variety of habitats including grasslands, shrublands, open woodlands and forests, and croplands. Townsend’s Big-eared Bat --/CCT,CSC Found in desert scrub and coniferous forests. Not present. Suitable habitat not (Corynorhinus townsendii) Roost in caves or abandoned mines and present at the site. occasionally are found to roost in buildings. Point Reyes jumping mouse --/CSC Primarily bunch grass marshes, also coastal Not present. Suitable habitat not (Zapus trinotatus orarius) scrub grassland and meadows. Builds grassy present at the site. nest on ground under vegetation and burrows in winter.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Salt Marsh Harvest Mouse FE/CE,FP Inhabits saline emergent wetlands in the San Not present. Suitable habitat not (Reithrodontomys raviventris) Francisco Bay and its tributaries. Pickleweed is present at the site. the primary habitat. PLANTS Sonoma alopecurus FE/--/1B.1 Occurs in wet areas, marshes and riparian banks Not present. Suitable habitat not (Alopecurus aequalis var. with other wetland species in freshwater present at the site. sonomensis) marshes and swamps, and riparian scrub. 5- 360m. Napa false indigo --/--/1B.2 Broadleafed upland forest, chaparral, Not present. Suitable habitat not (Amorpha californica var. napensis) cismontane woodland. Openings in forest or present at the site. woodland or in chaparral. 150-2000m. Bent-flowered fiddleneck --/--/1B.2 Cismontane woodland, valley and foothill Not present. Suitable habitat not (Amsinckia lunaris) grassland. 5-500m present at the site. Mt. Tamalpais manzanita --/--/1B Chaparral, valley and foothill grassland. Known Not present. Suitable habitat not (Arctostaphylos montana) from fewer than 20 occurrences in the Mt. present at the site. Tamalpais area, Marin County. Serpentine slopes in chaparral and grassland: 160-760 m. Marin manzanita --/--/1B.2 Broadleafed upland forest, closed-cone Not present. Suitable habitat not (Arctostaphylos virgata) coniferous forest, chaparral, north coast present at the site. coniferous forest. Only known from about 20 sites in Marin County. On sandstone or granitic soil 60–700 m. Marsh sandwort FE/CE/1B.1 Found in sandy soils in marshes and swamps. Not present. Suitable habitat not (Arenaria paludicola) Found in dense mats of Typha, Juncus, Scirpus, present at the site. etc. in freshwater marshes. 3-170m. Coastal marsh milk-vetch --/--/1B.2 Found in mesic sites in dunes or along streams Not present. Suitable habitat not (Astragalus pycnostachyus var. in coastal dunes and coastal salt marshes. 0- present at the site. pycnostachyus) 30m. Tiburon mariposa-lily FT/CT/1B.1 Serpentine slopes in Valley and Foothill Not present. Suitable habitat not (Calochortus tiburonensis) Grassland. Found on open rocky slopes 50-150 present at the site. m. Thurber’s Reed Grass --/--/2B.1 Usually found in marshy swales surrounded by Not present. Suitable habitat not (Calamagrostis crassiglumis) grassland or coastal scrub. 10-45m. present at the site. F:\Goodhill\Goodhill BSA 11-20-18.docx 23

Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Coastal bluff morning-glory --/--/1B.2 Found Coastal dunes, Coastal scrub, Coastal Not present. Suitable habitat not (Calystegia purpurata ssp. saxicola) bluff scrub and Northern coniferous forest. 5- present at the site. 430m. Seaside bittercress --/--/2B.2 Found in wet areas and streambanks within Not present. Suitable habitat not (Cardamine angulata) North Coast coniferous forest and lower present at the site. montane coniferous forest. 5-515 M. Bristly sedge --/--/2B.1 Found in marshes and swamps, coastal prairie, Not present. Suitable habitat not (Carex comosa) and valley and foothill grassland. Lake margins present at the site. and wet places. -5-1620m Lyngbye’s sedge --/--/2B.2 Marshes and swamps (brackish or freshwater) Not present. Suitable habitat not (Carex lyngbyei) at sea level. present at the site. Northern meadow sedge --/--/1B.2 Meadows and seeps. Moist to wet meadows. Not present. Suitable habitat not (Carex praticola) 15-3200 m. present at the site. Tiburon paintbrush FE/ST/1B.2 Rocky serpentine sites within valley and foothill Not present. Suitable habitat not (Castilleja affinis ssp. neglecta) grassland. 75-400m. present at the site. Mason’s ceanothus FSC/Rare/1B Chaparral. Endemic to Marin County. Not present. Suitable habitat not (Ceanothus masonii) Serpentine ridges or slopes in chaparral or present at the site. transition zone. 180–460. San Francisco Bay spineflower --/--/1B.1 Found on sandy soil on terraces and slopes Not present. Suitable habitat not (Chorizanthe cuspidata cuspidata) within coastal bluff scrub, coastal dunes, coastal present at the site. prairie and coastal scrub. 5-550m. Franciscan thistle --/--/1B.2 Found in Coastal bluff scrub. Boadleafed upland Not present. Suitable habitat not (Cirsium andrewsii) forest, coastal prairie on ultramafic soils. 0- present at the site. 295m Mt. Tamalpais thistle --/--/1B.2 Broadleafed upland forest, chaparral. Endemic Not present. Suitable habitat not (Cirsium hydrophilum var. vaseyi) to Marin County. Serpentine seeps and streams present at the site. in chaparral and woodland. 265–620 m. Points Reyes salty bird’s beak --/--/1A Usually in coastal salt marsh with Salicornia, Not present. Suitable habitat not (Cordylanthus maritimus palustris) Distichlis, Jaumea, Spartina, etc. 0-15m. present at the site. San Francisco collinsia FE/CE/1B.1 Found in closed-cone coniferous forest and Not present. Suitable habitat not (Collinsia multicolor) coastal scrub. Usually on decomposed present at the site. mudstone shale mixed with humus. 30-250m.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Western leatherwood --/--/1B.2 On brushy slopes and mesic sites mostly in Not present. Suitable habitat not (Dirca occidentalis) mixed evergreen and foothill woodland present at the site. communities. 30-500 m. Koch’s cord moss --/--/1B.3 Grows on river banks in cismontane woodland. Not present. Suitable habitat not (Entosthodon kochii) 185-365 M. present at the site. Tiburon buckwheat --/--/1B.2 Found in serpentine soils in sandy to gravelly Not present. Suitable habitat not (Eriogonum luteolum var. caninum) sites within chaparral, valley and foothill present at the site. grassland, cismontane woodland and coastal prairie. 0-700 M. Minute pocket moss --/--/1B.2 Found in North Coast coniferous forest. This Not present. Suitable habitat not (Fissidens pauperculus) moss grows on damp soil along the Coast and present at the site. found in dry streambeds and on stream banks. 10-1024 m. Marin checker lily --/--/1B.1 Coastal bluff scrub, coastal scrub, coastal Not present. Suitable habitat not (Fritillaria lanceolata var. tristulis) prairie. Endemic to Marin County. Occurrences present at the site. reported from canyons and riparian areas as well as rock outcrops; often on serpentine. 30– 300 m. Fragrant fritillary --/--/1B.2 Coastal scrub, valley and foothill grassland, Not present. Suitable habitat not (Fritillaria liliacea) coastal prairie. Often on serpentine; various present at the site. soils reported though usually clay, in grassland. 3-410m. Blue coast gilia --/--/1B.1 Coastal dunes and coastal scrub. 2-200m. Not present. Suitable habitat not (Gilia capitata ssp. chamissonis) present at the site. Woolly-headed gilia -/-/1B.1 Coastal bluff scrub. Rocky outcrops on the Not present. Suitable habitat not (Gilia capitata ssp. tomentosa) coast. 15–155 m. Has occurred 6 miles north of present at the site. Bolinas. Dark-eyed gilia --/--/1B Coastal dunes. 2-20m. Not present. Suitable habitat not (Gilia millefoliata) present at the site.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Diablo helianthela --/--/1B.2 Broadleaved upland forest, chaparral, Not present. Suitable habitat not (Helianthela castenea) cismontane woodland, coastal scrub, riparian present at the site. woodland, valley and foothill grassland. Usually in chaparral/oak woodland interface in rocky, azonal soils. Often in partial shade. 25-1150m. Congested-headed hayfield tarplant --/--/1B.2 Found in valley and foothill grassland, grassy Not present. Suitable habitat not (Hemizonia congesta ssp. congesta) valleys and hills, often in fallow fields and present at the site. sometime along roadsides. 20-560 M. Marin western flax FT/CT/1B.1 Chaparral, valley and foothill grassland. Found Not present. Suitable habitat not (Hesperolinon congestum) in serpentine barrens and serpentine grassland present at the site. and chaparral. 30-365 m. Water star-grass --/--/2B.2 Marshes and swamps. Found in alkaline, still or Not present. Suitable habitat not (Heteranthera dubia) slow-moving water at pH 7 or higher, and in present at the site. eutrophic waters. 15-1510m Santa Cruz tarplant FT/CE/1B Sandy soil or sandy clay in coastal prairie and Not present. Suitable habitat not (Holocarpha macradenia) valley and foothill grassland. 10-260m. present at the site. Point Reyes horkelia --/--/1B.2 Coastal dunes, coastal prairie and coastal scrub; Not present. Suitable habitat not (Horkelia marinensis) in sandy flats and dunes of grassland or scrub present at the site. habitats near the coast. 5-30m. Thin-lobed horkelia --/--/1B.2 Coastal scrub, chaparral. Sandy soils, mesic Not present. Suitable habitat not (Horkelia tenuiloba) openings. 45–500 m. present at the site. Beach layia FE/CE/1B.1 Coastal dunes, on sparsely vegetated, semi- Not present. Suitable habitat not (Layia carnosa) stabilized dunes, usually behind foredunes. 0- present at the site. 75m. Rose leptosiphon --/--/1B.1 Coastal bluff scrub. 0-100m. Not present. Suitable habitat not (Leptosiphon rosaceus) present at the site. Tamalpais lessingia -/--/1B.2 Chaparral, valley and foothill grassland. Not present. Suitable habitat not (Lessingia micradenia var. Endemic to Marin County. Usually on present at the site. micradenia) serpentine, in serpentine grassland or serpentine chaparral. Often on roadsides. 100– 305 m.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Marsh microseris --/--/1B.2 Closed-cone coniferous forest, cismontane Not present. Suitable habitat not (Microseris paludosa) woodland, coastal scrub, valley and foothill present at the site. grassland. 5-300m. Marin County navarretia --/--/1B.2 Closed-cone coniferous forest, chaparral. Not present. Suitable habitat not (Navarretia rosulata) Known only from Marin and Napa Counties. present at the site. Dry, open rocky places; can occur on serpentine. 200–635 m. Oregon polemonium --/--/2B.2 Found in Coastal prairie, coastal scrub and Not present. Suitable habitat not (Polemonium carneum) lower montane coniferous forest. 0-1830m. present at the site. White-rayed pentachaeta FE/CE/1B.1 Mostly on soils derived from serpentine Not present. Suitable habitat not (Pentachaeta bellidiflora) bedrock or open, dry rocky slopes and grassy present at the site. areas of valley and foothill grassland. 35-620m. Hairless popcornflower --/--/1A Found in meadows and seeps, marshes and Not present. Suitable habitat not (Plagiobothrys glaber) swamps. Coastal salt marshes and alkaline present at the site. meadows. 5-125m. North Coast semaphore grass --/CT/1B.1 Broadleafed upland forest, meadows and seeps, Not present. Suitable habitat not (Pleuropogon hooverianus) north coast coniferous forest. Wet grassy, present at the site. usually shady areas, sometimes freshwater marsh; associated with forest environments. 10–1150 m. Marin knotweed --/--/3.1 Coastal salt marshes and brackish marshes. 0- Not present. Suitable habitat not (Polygonum marinense) 10m. present at the site. Tamalpais oak --/--/1B.3 Lower montane coniferous forest. 100-750m. Not present. Suitable habitat not (Quercus parvula var. present at the site. tamalpaisensis) Point Reyes checkerbloom --/--/ 1B.2 Freshwater marshes and swamps near the Not present. Suitable habitat not (Sidalcea calycosa ssp. rhizomata) coast. 5-75m. present at the site. Marin checkerbloom --/--/1B.1 Found in serpentine or volcanic soils in Not present. Suitable habitat not (Sidalcea hickmanii ssp. viridis) chaparral. Sometimes appears after burns. 1- present at the site. 425 M. Long-styled sand-spurry --/--/1B.2 Marshes and swamps, meadows and seeps. Not present. Suitable habitat not (Spergularia macrotheca var. Alkaline sites. 0-220m. present at the site. longistyla) F:\Goodhill\Goodhill BSA 11-20-18.docx 27

Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

SPECIES STATUS2 HABITAT OCCURRENCE ON THE PROJECT SITE FED/STATE/CNPS6 Santa Cruz microseris --/--/1B Found in broadleaved upland forest, closed- Not present. Suitable habitat not (Stebbinsoseris decipiens) cone coniferous forest, chaparral, coastal present at the site. prairie and coastal scrub. Occurs in open areas on seaward slopes in loose or disturbed soil, usually derived from sandstone, shale or serpentine. 10-500m. Tamalpais jewelflower --/--/1B.3 Closed-cone coniferous forest, chaparral. Not present. Suitable habitat not (Streptanthus batrachopus) Endemic to Marin County. Talus serpentine present at the site. outcrops. 410-650 m. Tiburon jewelflower FE/CE/1B.1 Found on shallow rocky serpentine slopes in Not present. Suitable habitat not (Streptanthus glaudulosus spp. niger) valley and foothill grassland. 30-150m. present at the site. Mt. Tamalpais bristly jewelflower --/--/1B.2 Serpentine slopes in chaparral and valley and Not present. Suitable habitat not (Streptanthus glaudulosus spp. foothill grassland. 125-670 M. present at the site. pulchellus) Two-fork clover FE/--/1B.1 Valley and foothill grassland, coastal bluff scrub, Not present. Suitable habitat not (Trifolium amoenum) sometimes on serpentine soil. 5-560m. present at the site. Saline Clover --/--/1B.2 Marshes and swamps, mesic alkaline sites, Not present. Suitable habitat not (Trifolium depauperatum var. vernal pools in valley and foothill grassland. 0- present at the site. hydrophilum) 300m. Coastal triqeutrella --/--/1B.2 Grows within 30m of the coast in coastal scrub, Not present. Suitable habitat not (Triquetrella californica) grasslands and open gravels on roadsides, present at the site. hillsides, rocky slopes and fields. Found on gravel or thin soil over outcrops. 10-100m. 1. Source: California Natural Diversity Data Base, Natural Heritage Division, California Department of Fish and Wildlife for the San Rafael 7.5 Minute Quadrangle Map and surrounding areas, November 2018.

2. Status Codes: FE Federal-listed Endangered CE California State-listed Endangered FT Federal-listed Threatened CT California State-listed Threatened FPE Federally Proposed Endangered CR California Rare FPT Federally Proposed Threatened FP California Fully Protected BCC USFWS Bird Species of Conservation Concern CSC CDFW Species of Special Concern WL CDFW Watch List Species California Rare Plant Rank 1A: Plants presumed extirpated in California and either rare or extinct elsewhere.

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Table 1. Special Status Animal and Plant Species Documented in the Project Vicinity

California Rare Plant Rank 1B: Plants rare, threatened, or endangered in California and elsewhere. California Rare Plant Rank 2A: Plants presumed extirpated in California, but more common elsewhere. California Rare Plant Rank 2B: Plants rare, threatened, or endangered in California, but more numerous elsewhere. California Rare Plant Rank 3: Plants about which more information is needed – a review list. California Rare Plant Rank 4: Plants of limited distribution – a watch list.

CNPS Threat Ranks 0.1-Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat) 0.2-Moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat) 0.3-Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known)

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