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HomeMy WebLinkAboutCT 98-14; Thompson/Tabata; Tentative Map (CT) (166)APPENDIX A VASCULAR PLANT SPECIES OBSERVED ON THE PROJECT SITE ANGIOSPERMAE (DICOTYLEDONES) ANACARDIACEAE - SUMAC FAMILY Rhus integrifolia - lemonadeberry Malosma laurina - laurel sumac APIACEAE - CARROT FAMILY * Foeniculum vulgare - sweet fennel ASTERACEAE - SUNFLOWER FAMILY Artemisia californica - coastal sagebrush Baccharis pilularis ssp. consanguinea - coyote brush * Carduus pycnocephalus - Italian thistle * Centaurea melitensis - tocalote * Chrysanthemum coronarium - garland chrysanthemum * Conyza canadensis - common horseweed Encelia californica - California bush sunflower Hemizonia fasciculata - fascicled tarweed Heterotheca grandiflora - telegraph weed BRASSICACEAE - MUSTARD FAMILY * Brassica nigra - black mustard * Raphanus sativus - wild radish CACTACEAE - CACTUS FAMILY Opuntia littoralis - coastal prickly-pear CHENOPODIACEAE - GOOSEFOOT FAMILY * Salsola tragus - Russian-thistle FABACEAE - PEA FAMILY Lotus scoparius - deerweed LAMIACEAE - MINT FAMILY Salvia mellifera - black sage MALVACEAE - MALLOW FAMILY Malocothamnus fasciculatus - mesa bushmallow MYRTACEAE - MYRTLE FAMILY * Eucalyptus sp. - eucalyptus POLYGONACEAE - BUCKWHEAT FAMILY Eriogonum fasciculatum - flat-top buckwheat PRIMULACEAE - PRIMROSE FAMILY * Anagallis arvensis - scarlet pimpernel ROSACEAE - ROSE FAMILY Heteromeles arbutifolia - toyon SAURURACEAE - LIZARD-TAIL FAMILY Anemopsis californica - yerba mansa Eriodictyon crassifolia - yerba santa SCROPHULARIACEAE - FIGWORT FAMILY Mimulus aurantiacus - bush monkeyflower SALICACEAE - WILLOW FAMILY Salix lasiolepis - arroyo willow Salix laevigata - red willow SOLANACEAE - NIGHTSHADE FAMILY * Nicotiana glauca - tree tobacco TAMARICACEAE - TAMARISK FAMILY * Tamarix sp. - tamarisk ANGIOSPERMAE (MONOCOTYLEDONES) LILIACEAE - LILY FAMILY Yucca whipplei - our lord's candle POACEAE - GRASS FAMILY * Arundo donax - giant cane * Avena barbata - slender oat * Avena fatua - wild oats * Bromus diandrus - ripgut grass * Bromus hordeaceus - soft chess * Bromus madritensis ssp. rubens - foxtail chess * Cortaderia jubata - Atacama pampas grass * Lolium multiflorum - English ryegrass * denotes non-native, introduced species APPENDIX B WILDLIFE SPECIES OBSERVED OR DETECTED ON THE PROJECT SITE REPTILES IGUANIDAE - IGUANID LIZARDS Uta stansburiana elegans - side-blotched lizard Sceloporus occidentalis longipes - Great Basin fence lizard BIRDS COLUMBIDAE - PIGEONS & DOVES Zenaida macroura - mourning dove TROCHILIDAE - HUMMINGBIRDS Calypte anna - Anna's hummingbird TYRANNIDAE - TYRANT FLYCATCHERS Sayornis nigricans - black phoebe Tyrannus verticalis - western kingbird CORVTOAE - JAYS & CROWS Aphelocoma coerulescens - scrub jay Corvus corax - common raven MIMIDAE - THRASHERS Mimus polyglottos - northern mockingbird AEGITHALIDAE - BUSHTITS Psaltriparus minimus - bushtit TROGLODYTIDAE - WRENS Thryomanes bewickii - Bewick's wren EMBERIZIDAE - WOOD WARBLERS, TANAGERS, BUNTINGS & BLACKBIRDS Pipilo crissalis - California towhee Sturnella neglecta - western meadowlark FRINGILLIDAE - FINCHES Carpodacus mexicanus - house finch Carduelis psaltria - lesser goldfinch DUDEK Engineering, Planning, Corporate Office: 760.942.5147 Environmental Sciences and 605 Third Street Fax 760.632.0164 & ASSOCIATES, INC. „ „ . ,_..„,.,. „„„„„Management Services Encimtas, California 92024 30 August 1998 1671-02 Gregg Linhoff Standard Pacific Homes 9335 Chesapeake Dr. San Diego, Ca 92123 Re: Biological Survey and Vegetation Staking of the Thompson Property, City of Carlsbad Dear Mr. Linhoff: A biological reconnaissance survey was conducted of the approximately 79.4-acre Thompson property situated in the City of Carlsbad in the western portion of San Diego County, California. A total of 74.9 acres of the property are proposed for the development, the balance of which is currently dedicated to the City of Carlsbad hi the form of Poinsettia Lane and a small portion of Rose Lane. The property is located west of El Camino Real, adjacent to Poinsettia Lane and Aviara Parkway, east of Interstate 5, south of Palomar Airport Road and north of Batiquitos Lagoon (Figures 1 and 2). The property is surrounded by agriculture and greenhouse production or residential development with a strip of developed native vegetation located to the east. Biological surveys of the property were conducted hi December 1997 and June 1998 by Dudek & Associates (DUDEK) to assess the existing conditions of the biological resources and stake or flag native vegetation that may be present. The surveys augmented the existing data base accumulated through previous survey work (e.g., SANDAG 1994). The purpose of the visit was to identify the habitat types present, and identify constraints to development of the property. 1.0 METHODS AND SURVEY LIMITATIONS Data regarding biological resources present on the project site were obtained through a review of pertinent literature and through field reconnaissance. 1.1 LITERATURE REVIEW Biological resources present or potentially present on the Thompson property were identified through a variety of environmental studies and reports including the Multiple Habitat Conservation Program (SANDAG, 1997) and draft Habitat Management Plan for Natural Communities hi the City of Carlsbad (December 1, 1997). General information regarding wildlife species present in the region was obtained from Unitt (1984) for birds, Bond (1977) for mammals, and Stebbins (1984) for reptiles and amphibians. San Diego Imperial Beach 1"-8 Miles Tijuana Mexico Thompson Property - Biological Resources Letter Report & Impact Analysis Regional Map \\ V \ \ BASE MAP SOURCE: USGS 7.5 Minute Series, Encinitas Quadrangle 1"=2000' Thompson Property - Biological Resources Letter Report & Impact Analysis Vicinity Map Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 4 1.2 FIELD RECONNAISSANCE Biological surveys of the Thompson property were conducted by DUDEK biologist Anita M. Hay worth, Ph.D. on 29 and 30 December 1997. Vegetation staking or flagging took place on June 11, 1998. All surveys were conducted by foot under favorable weather conditions, and all areas of the property were visited and inventoried for biotic components. The time of the surveys was generally between 0800 and 1200 for approximately 2 to 3 hours for each visit. Weather conditions were typically mild with temperatures ranging from 60 to 70 °F, windspeed from 1-8 MPH, and skies clear. 1.2.1 Resource Mapping Plant communities were mapped in the field onto a 100-scale (1" = 100') topography map of the site. Plant community classifications used hi this report follow Holland (1986), with modifications to accommodate the lack of conformity of the observed communities to those of Holland. Locations of rare or sensitive plant and wildlife species also were mapped. During the reconnaissance survey of the property, the area along the eastern property boundary adjacent to the area proposed for development was delimited at the edge of the coastal sage scrub vegetation. The delimiting was placed appropriately at the edge of the coastal sage scrub vegetation by either tying a strip of flagging hi the shrub at the edge of the native vegetation or to the fenceline which served as a delimiter for the boundary of the native vegetation and the agriculture fields. The flagged area was then surveyed by a civil engineer and the survey line was provided to DUDEK as a digital AutoCadd file. Thus, provided that no encroachment is made beyond the staked line, no impacts to coastal sage scrub due to the proposed development would occur. 1.2.2 Flora All plant species encountered during the field surveys were identified and recorded. Species that could not be identified immediately hi the field were brought back into the laboratory for further investigation. Lathi and common names of plants used hi this report follow the Jepson Manual (Hickman 1993). Where not listed hi Hickman (1993), common names are taken from Beauchamp (1986). 1.2.3 Fauna Wildlife species detected during field surveys by sight, calls, tracks, scat, or other sign were recorded. Although daytime surveys result hi the greatest number and highest diversity of wildlife sightings (because most birds are diurnal), many species of mammals are not observable during the day because of then- nocturnal habits. In addition, many species of reptiles have extremely secretive habits, and hence, are difficult to detect as well. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg, 5 Binoculars (10 x 50 power) were used to aid in the identification of observed animals. Latin and common names used in this report follow Stebbins (1985) for reptiles and amphibians, American Ornithologists' Union (1983, 1989) for birds, and Jones et al. (1992) for mammals. 1.2.4 Sensitive Biological Resources Sensitive biological resources are those defined as follows: (1) species that have been given special recognition by federal, state, or local conservation agencies and organizations due to limited, declining, or threatened population sizes and (2) habitat areas or plant communities that are unique, are of relatively limited distribution, or are of particular value to wildlife. During the field work a special effort was made to survey more thoroughly those areas suspected to support sensitive resources. Most potentially occurring sensitive plants are perennials that can be detected at any time of year if present hi substantial numbers. 1.3 SURVEY LIMITATIONS Limitations of the surveys include a diurnal bias and seasonal constraints as well as the focus of the survey being on a reconnaissance level of mapping and identification. For convenience and maximum visibility, surveys were conducted during the day tune hours. Although diurnal surveys maximize the number of observations of birds, which represent the largest component of the vertebrate fauna, they usually result hi few observations of mammals, many of which are active primarily at night. No mammal trapping was conducted. No focused surveys were conducted for sensitive species. Many species of reptiles and amphibians are secretive hi their habitats and are rarely observed using normal survey techniques. No drift lines or pit fall traps were employed. 2.0 PHYSICAL CHARACTERISTICS 2.1 Site Description Land use within the Thompson property is currently predominantly active agriculture, including greenhouse production of plant material. Much of the property appears to have been graded hi the past. The property is surrounded by existing or planned developed on three sides. Along the eastern boundary, the property is adjacent to open space along the northern two-thirds of the eastern property line. The property is situated near the north central portion of the USGS 7.5 minute Encinitas quadrangle. The topography onsite consists of predominantly flat terrain with an east-facing steep slope of native vegetation along the eastern property boundary. Poinsettia Lane, a four lane circulation element, bisects the northern portion of the property in an east-west direction. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 6 Elevations range from approximately 185 feet above mean sea level (AMSL) to approximately 300 feet AMSL . 3.0 RESULTS 3.1 BOTANY - PLANT COMMUNITIES AND FLORAL DIVERSITY Based on species composition and general physiognomy, three plant communities (or habitat types) were identified within the Thompson property: coastal sage scrub, southern willow scrub, and disturbed habitat hi the form of active agriculture, developed land, and landscape plantings. The existing plant communities are described below and their distribution onsite is presented hi Figure 3. Table 1 presents the acreage of each vegetation type present onsite. TABLE 1 Existing Plant Community Acreages Plant Community (abbreviation used on map) Coastal Sage Scrub (CSS) Southern Willow Scrub (SWS) Disturbed Habitat (DH) TOTALS Existing Acreage 1.8 0.1 77.5 79.4 3.1.1 Coastal Sage Scrub Coastal sage scrub is a native plant community characterized by a variety of soft, low, aromatic, drought-deciduous shrubs, such as California sagebrush (Artemisia calif arnica), flat-top buckwheat (Eriogonumfasciculatum), California bush sunflower (Encelia californica), and sages (Salvia spp.), with scattered evergreen shrubs, including lemonadeberry (Rhus integrifolia), laurel sumac (Malosma laurina), and toyon (Heteromeles arbutifolid). It typically develops on south-facing slopes and other xeric situations. Coastal sage scrub is considered a sensitive habitat type because of its depleted nature and the large number of sensitive plant and wildlife species that it supports. Coastal sage scrub is the focus of the present State of California's Natural Communities Conservation Program (NCCP). Vegetation Types/Landcovers: [ CSS I Coastal Sage Scrub I SWS | Southern Willow Scrub DH I Disturbed Habitat BASE TOPO SOURCE: Buccola Engineering 250 Scale In Feet ! Thompson Property - Biological Resources Letter Report & Impact Analysis Biological Resources Map . ;: • ';•' Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 8 Onsite, coastal sage scrub occurs along the eastern property line as a narrow band of habitat that continues offsite within the open space located between the property and Aviara Parkway. A total of 1.8 acres of coastal sage scrub is located onsite. The habitat is very diverse and is dominated by California sagebrush and includes flat-top buckwheat, California bush sunflower, black sage (Salvia melliferd), laurel sumac, lemonadeberry, prickly pear (Opuntia littoralis), and other plant species. Patches of eucalyptus woodland occur within the open space area adjacent to the coastal sage scrub. 3.1.2 Southern Willow Scrub Holland (1986) describes southern willow scrub as "dense, broadleafed, winter-deciduous riparian thickets dominated by several species of [willows] Salix, with scattered emergent [Fremont cottonwood] Populus fremontii and [western sycamore] Platanus racemosa." The understory is usually depauperate owing to the dense canopy. Within the property there is one patch of riparian habitat that are dominated by arroyo willow (Salix lasiolepis) and red willow (Salix laevigata) with tamarisk (Tamarix sp.) and giant cane (Arundo donax) also present. The patch of southern willow scrub is located along the western property boundary adjacent to the paved access road to the site. It appears to be located within a manmade water retention or desiltation basin. Non-native grasses are present along the edges of the basin which would likely also be considered the jurisdiction of the regulating agencies. A total of 0.10 acre of southern willow scrub is located within the basin. Although the southern willow scrub habitat area is moderately disturbed, it is considered sensitive because it represents wetland habitat that is regulated by the U.S. Army Corps of Engineers and the California Department of Fish and Game. 3.1.3 Disturbed Habitat For purposes of this document, disturbed habitat includes areas in agriculture production, developed areas that include paved roads and existing houses, pavement and buildings, and landscaped areas along the manufactured slopes of Poinsettia Lane and the housing developments along the property boundaries. Major portions of the property (77.5 acres) are comprised of disturbed habitat. 3.1.4 Floral Diversity A total of 39 species of vascular plants were recorded from the site (Appendix A). The relatively low floral diversity of the area is the result of the large amount of disturbed habitat in the form of agricultural production onsite. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 9 3.2 ZOOLOGY - WILDLIFE DIVERSITY Thirteen species of birds were observed during the surveys. The most commonly encountered residents in project area include California towhee (Pipilo crissalis), house finch (Carpodacus mexicanus) and scrub jay (Aphelocoma coerulescens). Because the document was prepared as a reconnaissance survey, it is likely that not all bird species present within the property were detected. One mammal species, California ground squirrel (Spermophilus beecheyf), was observed onsite. Two reptile species were observed pnsite. 3.3 SENSITIVE BIOLOGICAL RESOURCES The following resources are discussed hi this section: (1) plant and animal species present in the project vicinity that are given special recognition by federal, state, or local conservation agencies and organizations owing to declining, limited, or threatened populations, that are the results, hi most cases, of habitat reduction; and (2) habitat areas that are unique, are of relatively limited distribution, or are of particular value to wildlife. Sources used for determination of sensitive biological resources are as follows: wildlife — U.S. Fish and Wildlife Service (USFWS 1989, 1991), California Natural Diversity Data Base (CNDDB), California Department of Fish and Game (CDFG 1980, 1986), Remsen (1978), McGurty (1980); plants - USFWS (1990, 1993), CDFG (1987), CNDDB, and Skinner and Pavlik (1995); and habitats - CNDDB. 3.3.1 Sensitive Plant Species No sensitive plant species were observed on the site. 3.3.2 Sensitive Wildlife Species No sensitive wildlife species were observed onsite, however, the California gnatcatcher (Polioptila californicd) could be present hi the coastal sage scrub habitat at the eastern edge of the property. A focused, protocol survey for this species was not conducted. 3.3.3 Sensitive Habitats and Wildlife Corridors HABITATS Sensitive habitats are those that 1) are considered rare within the region, 2) support sensitive plant and/or wildlife species, or 3) function as corridors for wildlife movement. Onsite, these include the coastal sage scrub, disturbed southern willow scrub, and the associated jurisdiction wetlands or "waters of the U.S." adjacent to the basin. '- Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 10 Regionally, coastal sage scrub provides habitat for numerous sensitive plant and wildlife species. Animals confined primarily to this habitat include California gnatcatcher, cactus wren, orange-throated whiptail, and San Diego horned lizard. Sensitive plants characteristic of coastal sage scrub include San Diego barrel cactus, ashy spike-moss, and California adolphia. This habitat type has been reduced by about 70% of its former coverage hi the County as a result of agriculture, urbanization, and other development. Wetlands, such as southern willow scrub, are recognized as important wildlife habitat. These areas provide a variety of resources that are unavailable in upland areas during the drier tunes of the year. Because these habitats are considered wetlands, they are under the jurisdiction of the U.S. Army Corps of Engineers (as wetlands or "waters of the U.S.") and the California Department of Fish and Game (as "wetlands"). Local and regional resource agencies have a rigid policy of no net loss of quantity or quality of wetland habitat. Intermittent streams, such as dry washes and narrow gullies, also may fall under the jurisdiction of the U.S. Army Corps of Engineers as waters of the U.S. CORRIDORS Due to the location of the property within a residential development and agricultural area, little corridor potential exists. The habitat located at the eastern edge of the property connects to additional native habitat offsite to the east, however, the habitat ends at Aviara Parkway. The patch of coastal sage scrub is a small-sized patch connected to a medium- sized patch and although it varies hi quality, still provides important coastal sage scrub resources for providing a possibly territory and possible stepping-stone movement corridor for sensitive species such as the California gnatcatcher. Unfortunately, the patch of habitat does not connect to additional habitat to form a corridor to aid hi providing for dispersal of wildlife species hi the area. 5.0 REGULATORY PERMIT REQUIREMENTS 5.1 Coastal,Sage Scrub Impacts Based on this reconnaissance survey and the staking that was done along the edge of the coastal sage scrub habitat within the proposed development, no mitigation will be required because no impacts will occur to coastal sage scrub. 5.2 Wetland or "Waters" Impacts Based on the preliminary site development plans, the southern willow scrub habitat will be impacted. Thus, it is anticipated that the 0.10 acre patch of southern willow scrub will be impacted. Permits from the ACOE, CDFG, and California Regional Water Quality Control Board (RWQCB) are required. Mitigation is required for the impact. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 11 The discharge of dredge or fill material (temporary or permanently) into areas delineated as wetlands or "waters of the United States" requires authorization from the ACOE pursuant to Section 404 of the Clean Water Act. "Waters of the U.S." as defined in CFR 328.2 includes all waters or tributaries to waters, including wetlands, streams, dry washes, seasonal drainages, and other aquatic habitats. Activities that involve regulated discharge of dredge or fill material include grading, placing of riprap for erosion control, pouring concrete, laying sod, and stockpiling excavated material. Activities that generally do not involve regulated discharge, if performed in a manner to avoid discharge, include driving pilings and some methods of vegetation clearing. sThe ACOE has 36 nationwide or general permits (NWPs) that pre-authorize specific minor discharges if less than one-third of an acre. Generally, use of these NWPs does not require review by:the ACOE or other federal agencies. If endangered species or significant cultural resources occur on the property and are not adequately mitigated, the activity is not considered pre-authorized and ACOE has the discretionary authority to require an individual permit. The individual permit process (for a Section 404) involves an alternatives analysis and public comment on the proposed activity and can last 180 days or longer. Based on the small size of the riparian habitat, it is likely that no permit would be required and the only requirement from the ACOE is that a pre-construction notification letter be submitted to describe the activity and impact. Prior to project implementation, a Section 401 water quality certification (or waiver) must be obtained from the California Regional Water Quality Control Board (RWQCB), and the ACOE should be notified hi writing for concurrence that any proposed fill is authorized. The RWQCB requires the incorporation of features into the grading and development plan that ensure that the project will not adversely affect water quality. The types of features typically incorporated into projects include desiltation basins, grease traps, revegetation of cut and fill slopes, and the use of sand bags and hay bales to inhibit erosion and siltation. All of these are considered features of a "Best Management Practices" approach. For streambed impacts, an application for a CDFG Section 1603 Streambed Alteration Agreement can be submitted only after an environmental impact report or negative declaration has been certified, or under a categorical exemption. The CDFG generally requires that any impacts to streambeds or adjacent riparian habitats be mitigated at a ratio of a minimum of 1:1 by area. Application for a Streambed Alteration Agreement must be accompanied by certified CEQA documentation for the project and a wetland mitigation and monitoring plan, if applicable. It normally takes 30 days for the CDFG to process a 1603 application. Based on the reconnaissance survey of the property, the 0.10 acre patch of southern willow scrub is within the jurisdiction of the CDFG. Impacts to the patch require mitigation. Due to the small size, isolated nature and relatively disturbed quality of the habitat, it is anticipated that mitigation will be at a 2:1 ratio. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 12 The impact to the waters of the U.S. and southern willow scrub may be mitigated onsite if suitable acreage is available. A total mitigation acreage for southern willow scrub is likely to be 0.20 acre. This acreage may change after the applications have been submitted to the resource agencies. The project design includes open space lots in lot 182 and 170 to function as detention basins. These basins, if the acreage is suitable, should be able to accommodate the mitigation for the impact to southern willow scrub. Please feel free to contact me at (760) 942-5147 with questions or if you require additional information. I look forward to working with you on this project. We would be able to respond immediately to your needs for preparing the required documents. Very truly yours, DUDEK & ASSOCIATES, INC. Anita M. Hay wo Biologist V cc: Melissa Allen, Jack Henthorn & Associates ACKNOWLEDGMENTS This report was prepared by Anita M. Hay worth, Ph.D. Martie demons prepared the graphic illustrations. LITERATURE CITED American Ornithologists' Union. 1983. The check-list of North American birds, 6th edition. Allen Press, Lawrence, Kansas. American Ornithologists' Union. 1989. Thirty-seventh supplement to the American Ornithologists' Union check-list of North American birds. The Auk 106:532-538. Beauchamp, R. M. 1986. A flora of San Diego County, California. Sweetwater Press, National City, California. 241 pp. Bond, S. I. 1977. An annotated list of the mammals of San Diego County, California. Trans. San Diego Soc. Nat. Hist. 18(14):229-248. Mr. Gregg Linhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 13 California Department of Fish and Game. 1980. At the crossroads: A report on the status of California's endangered and rare fish and wildlife. State of California Resources Agency, Sacramento. California. California Department of Fish and Game. 1986. Endangered, rare, and threatened animals of California. State of California Resources Agency, Sacramento, California. California Department of Fish and Game. 1987. Designated endangered or rare plants. Summary list from Section 1904 Fish and Game Code (Native Plant Protection Act). State of California Resources Agency, Sacramento, California. Everett, W. T. 1979. Threatened, declining, and sensitive bird species in San Diego County. San Diego Audubon Society Sketches 29:2-3. Hickman, J. C. 1993. The Jepson manual: higher plant of California. University of California Press, Berkeley. 1400 pp. Holland, R. F. 1986. Preliminary descriptions of the terrestrial natural communities of California. Nongame-Heritage Program, California Department of Fish and Game. Jones, J. K., Jr., D. C. Carter, H. H. Genoways, R. S. Hoffman, and D. W. Rice. 1992. Revised checklist of North American mammals north of Mexico. Occasional Papers of the Museum of Texas Tech University, no. 148. McGurty, B. M. 1980. Survey and status of endangered and threatened species of reptiles natively occurring in San Diego, California. San Diego Herpetological Society. Munz, P. 1974. A flora of southern California. University of California Press, Berkeley, California. 1086 pp. Reed, P. B. 1988. National list of plant species that occur in wetlands: California (Region 0). U.S. Fish and Wildlife Service Biological Report 88 (26.10). Remsen, J. V. 1978. Bird species of special concern in California: An annotated list of declining or vulnerable bird species. Nongame Wildlife Investigations, Wildlife Management Branch, California Department of Fish and Game. Administrative Report No. 78-1. Skinner, M. W. and B. M. Pavlik. 1994. California Native Plant Society's inventory of rare and endangered vascular plants of California. Special Publication No. 1 (5th Edition), California Native Plant Society, Sacramento, California. 338 pp. Mr. Gregg Unhoff 30 August 1998 Re: Biological Reconnaissance Survey For the Thompson Property Pg. 14 Stebbins, R. C. 1985. A field guide to western reptiles and amphibians. Houghton Mifflin Co., Boston. 336pp. Unitt, P. A. 1984. Birds of San Diego County. Memoir 13, San Diego Soc. Nat. Hist. 276 pp. United States Fish and Wildlife Service (USFWS). 1989. Federal Register, Part 4, Endangered and Threatened Wildlife and Plants; Animal Notice of Review. 50 CFR Part 17. Department of the Interior. United States Fish and Wildlife Service (USFWS). 1990. Federal Register, Part 4, Endangered and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or Threatened Species, Notice of Review. 50 CFR Part 17. Department of the Interior. United States Fish and Wildlife Service (USFWS). 1991. Federal Register, Part 8, Endangered and Threatened Wildlife and Plants; Animal Candidate Review for Listing as Endangered or Threatened Species, Proposed Rule. 50 CFR Part 17. Department of the Interior. United States Fish and Wildlife Service (USFWS). 1993. Federal Register, Part 8, Endangered and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or Threatened Species. 50 CFR Part 17. Vol. 58. No. 188. Department of the Interior. U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1, U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, Mississippi. APPENDICES DUDEK & ASSOCIATES, INC. Engineering, Planning, Environmental Sciences and Management Services Corporate Office: 605 Third Street Encinitas, California 92024 . , . _nn!: 3 ZuOO 760.942.5147 Fax 760.632.0164 2755-01 Tmm, for Complex Projects 3 October 2000 Kathy Baker Standard Pacific Homes 5750 Fleet Street, Suite 200 Carlsbad, Ca 92008 RE: BIOLOGICAL SURVEY OF THE THOMPSON PROPERTY, CITY OF CARLSBAD Dear Ms. Baker: A biological reconnaissance survey was conducted of the approximately 82.2-acre Thompson property situated in the City of Carlsbad in the western portion of San Diego County, California. A total of 77.7 acres of the property are proposed for the development, the balance of which is currently dedicated to the City of Carlsbad in the form of Poinsettia Lane and a small portion of Rose Lane. The property is located west of El Camino Real, adjacent to Poinsettia Lane and Aviara Parkway, east of Interstate 5, south of Palomar Airport Road and north of Batiquitos Lagoon (Figures 1 and 2}. The property is surrounded by agriculture and greenhouse production or residential development with a strip of native vegetation located to the east. Biological surveys of the property were conducted in December 1997 and June 1998 by Dudek & Associates (DUDEK) to assess the existing conditions of the biological resources and stake or flag native vegetation that may be present. The surveys augmented the existing data base accumulated through previous survey work (e.g., SAND AC 1994). The purpose of the visit was to identify the habitat types present, and identify constraints to development of the property. A supplemental site visit was conducted in October 2000 to confirm the mapping described in this letter and photograph the existing patch of willows. 1.0 METHODS AND SURVEY LIMITATIONS Data regarding biological resources present on the project site were obtained through a review of pertinent literature and through field reconnaissance. Biological Survey • Thompson Property 1.1 Literature Review Biological resources present or potentially present on the Thompson property were identified through a variety of environmental studies and reports including the Multiple Habitat Conservation Program (SANDAC, 1997) and draft Habitat Management Plan for Natural Communities in the City of Carlsbad (December 1, 1997). General information regarding wildlife species present in the region was obtained from Unitt (1984) for birds, Bond (1977) for mammals, and Stebbins (1984) for reptiles and amphibians. 1.2 Field Reconnaissance Biological surveys of the Thompson property were conducted by DUDEK biologist Anita M. Hayworth, Ph.D. on 29 and 30 December 1997. Vegetation staking or flagging took place on June 11,1998. All surveys were conducted by foot under favorable weather conditions, and all areas of the property were visited and inventoried for biotic components. The time of the surveys was generally between 0800 and 1200 for approximately 2 to 3 hours for each visit. Weather conditions were typically mild with temperatures ranging from 60 to 70 °F, windspeed from 1-8 MPH, and skies clear. A brief visit was made on October 4, 2000 to confirm the results described in this letter and take photographs. 1.2.1 Resource Mapping Plant communities were mapped in the field onto a 100-scale (1"=100') topography map of the site. Plant community classifications used in this report follow Holland (1986), with modifications to accommodate the lack of conformity of the observed communities to those of Holland. Locations of rare or sensitive plant and wildlife species also were mapped. During the reconnaissance survey of the property, the area along the eastern property boundary adjacent to the area proposed for development was delimited at the edge of the coastal sage scrub vegetation. The delimiting was placed appropriately at the edge of the coastal sage scrub vegetation by either tying a strip of flagging in the shrub at the edge of the native vegetation or to the fenceline which served as a delimiter for the boundary of the native vegetation and the agriculture fields. The flagged area was then surveyed by a civil engineer and the survey line was provided to DUDEK as a digital AutoCadd file. Thus, provided that no encroachment is made beyond the staked line, no impacts to coastal sage scrub due to the proposed development would occur. 2755-01 l& ASSOCIATES, INC. Pre/cuionJ Tram, far Complex Pro/rai OCtObef 3, 2000 Biological Survey • Thompson Property 1.2.2 Flora All plant species encountered during the field surveys were identified and recorded. Species that could not be identified immediately in the field were brought back into the laboratory for further investigation. Latin and common names of plants used in this report follow the Jepson Manual (Hickman 1993). Where not listed in Hickman (1993), common names are taken from Beauchamp (1986). 1.2.3 Fauna Wildlife species detected during field surveys by sight, calls, tracks, scat, or other sign were recorded. Although daytime surveys result in the greatest number and highest diversity of wildlife sightings (because most birds are diurnal), many species of mammals are not observable during the day because of their nocturnal habits. In addition, many species of reptiles have extremely secretive habits, and hence, are difficult to detect as well. Binoculars (10 x 50 power) were used to aid in the identification of observed animals. Latin and common names used in this report follow Stebbins (1985) for reptiles and amphibians, American Ornithologists' Union (1983,1989) for birds, and Jones et al. (1992) for mammals. 1.2.4 Sensitive Biological Resources Sensitive biological resources are those defined as follows: (1) species that have been given special recognition by federal, state, or local conservation agencies and organizations due to limited, declining, or threatened population sizes and (2) habitat areas or plant communities that are unique, are of relatively limited distribution, or are of particular value to wildlife. During the field work a special effort was made to survey more thoroughly those areas suspected to support sensitive resources. Most potentially occurring sensitive plants are perennials that can be detected at any time of year if present in substantial numbers. 1.3 Survey Limitations Limitations of the surveys include a diurnal bias and seasonal constraints as well as the focus of the survey being on a reconnaissance level of mapping and identification. For convenience and maximum visibility, surveys were conducted during the daytime hours. Although diurnal surveys maximize the number of observations of birds, which represent the largest 2755-01 Pro/e«i<n»JT*anu/(wCompl« Project* OCtObGf 3, 2000 3 Biological Survey • Thompson Property component of the vertebrate fauna, they usually result in few observations of mammals, many of which are active primarily at night. No mammal trapping was conducted. No focused surveys were conducted for sensitive species. Many species of reptiles and amphibians are secretive in their habitats and are rarely observed using normal survey techniques. No drift lines or pit fall traps were employed. 2.0 PHYSICAL CHARACTERISTICS 2.1 Site Description Land use within the Thompson property is currently predominantly active agriculture, including greenhouse production of plant material. Much of the property appears to have been graded in the past. The property is surrounded by existing or planned developed on three sides. Along the eastern boundary, the property is adjacent to open space along the northern two-thirds of the eastern property line. The property is situated near the north- central portion of the USGS 7.5 minute Encinitas quadrangle. The topography onsite consists of predominantly flat terrain with an east-facing steep slope of native vegetation along the eastern property boundary. Poinsettia Lane, a four-lane circulation element, bisects the northern portion of the property in an east-west direction. Elevations range from approximately 185 feet above mean sea level (AMSL) to approximately 300 feet AMSL. 3.0 RESULTS 3.1 Botany - Plant Communities and Floral Diversity Based on species composition and general physiognomy, three plant communities (or habitat types) were identified within the Thompson property: coastal sage scrub, southern willow scrub, and disturbed habitat in the form of active agriculture, developed land, and landscape plantings. The existing plant communities are described below and their distribution onsite is presented in Figure 3. Table 1 presents the acreage of each vegetation type present onsite. 2755-01 |& ASSOCIATES, LNC.I ————••••—•"•—- October 3,2000 4 Biological Survey • Thompson Property TABLE" 1 Existing Plant Community Acreages • • "••.' • " • . "•-..• ' " • Plant Community (abbreviation used on map) Coastal Sage Scrub (CSS) Southern Willow Scrub (SWS) Disturbed Habitat (DH) TOTALS Existing Acreage 1.8 0.1 80.3 82.2 3.1.1 Coastal Sage Scrub Coastal sage scrub is a native plant community characterized by a variety of soft, low, aromatic, drought-deciduous shrubs, such as California sagebrush (Artemisia californica), flat- top buckwheat (Eriogonum fasciculatum), California bush sunflower (Encelia californica}, and sages (Salvia spp.), with scattered evergreen shrubs, including lemonadeberry (Rhus integrifolia), laurel sumac (Malosma laurina), and toyon (Heteromeles arbutifolia}. It typically develops on south-facing slopes and other xeric situations. Coastal sage scrub is considered a sensitive habitat type because of its depleted nature and the large number of sensitive plant and wildlife species that it supports. Coastal sage scrub is the focus of the present State of California's Natural Communities Conservation Program (NCCP). Onsite, coastal sage scrub occurs along the eastern property line as a narrow band of habitat that continues offsite within the open space located between the property and Aviara Parkway. A total of 1.8 acres of coastal sage scrub is located onsite. The habitat is very diverse and is dominated by California sagebrush and includes flat-top buckwheat, California bush sunflower, black sage (Salvia mellifera), laurel sumac, lemonadeberry, prickly pear (Opuntia linoralis), and other plant species. Patches of eucalyptus woodland occur within the open space area adjacent to the coastal sage scrub. 3.1.2 Southern Willow Scrub Holland (1986) describes southern willow scrub as "dense, broadleafed, winter-deciduous riparian thickets dominated by several species of [willows] Salix, with scattered emergent & ASSOCIATES, INC. 2755-01 Pro/cuiooal Tram, /or Compk, P.o,«1i ., 2000 Biological Survey + Thompson Property [Fremont cottonwood] Populus fremontii and [western sycamore] Platanus racemosa." The understory is usually depauperate owing to the dense canopy. Within the property there is one patch of riparian habitat that are dominated by arroyo willow (Salix lasiolepis) and red willow (Salix laevigata) with tamarisk (Tamarix sp.) and giant cane (Arundo donax) also present. The patch of southern willow scrub is located along the western property boundary adjacent to the paved access road to the site. It appears to be located within a manmade water retention or desiltation basin. Non-native grasses are present along the edges of the basin which would likely also be considered the jurisdiction of the regulating agencies. A total of 0.10 acre of southern willow scrub is located within the basin. Although the southern willow scrub habitat area is moderately disturbed, it is considered sensitive because it represents wetland habitat that is regulated by the U.S. Army Corps of Engineers and the California Department of Fish and Game. 3.1.3 Disturbed Habitat For purposes of this document, disturbed habitat includes areas in agriculture production, developed areas that include paved roads and existing houses, pavement and buildings, and landscaped areas along the manufactured slopes of Poinsettia Lane and the housing developments along the property boundaries. Major portions of the property (80.3 acres) are comprised of disturbed habitat. 3.1.4 Floral Diversity A total of 39 species of vascular plants were recorded from the site (Appendix A). The relatively low floral diversity of the area is the result of the large amount of disturbed habitat in the form of agricultural production onsite. 3.2 Zoology - Wildlife Diversity Thirteen species of birds were observed during the surveys. The most commonly encountered residents in project area include California towhee (Pipilo crissalis), house finch (Carpodacus mexicanus) and scrub jay (Aphelocoma coerulescens). Because the document was prepared as a reconnaissance survey, it is likely that not all bird species present within the property were detected. 2755-01 & ASSOCIATES. INC. | «-t, October 3, 2000 Biological Survey • Thompson Property One mammal species, California ground squirrel (Spermophilus heecheyi), was observed onsite. Two reptile species were observed onsite. 3.3 Sensitive Biological Resources The following resources are discussed in this section: (1) plant and animal species present in the project vicinity that are given special recognition by federal, state, or local conservation agencies and organizations owing to declining, limited, or threatened populations, that are the results, in most cases, of habitat reduction; and (2) habitat areas that are unique, are of relatively limited distribution, or are of particular value to wildlife. Sources used for determination of sensitive biological resources are as follows: wildlife -- U.S. Fish and Wildlife Service (USFWS 1989, 1991), California Natural Diversity Data Base (CNDDB), California Department of Fish and Game (CDFG 1980, 1986), Remsen (1978), McGurty (1980); plants -- USFWS (1990,1993), CDFG (1987), CNDDB, and Skinner and Pavlik (1995); and habitats - CNDDB. 3.3.1 Sensitive Plant Species No sensitive plant species were observed on the site. 3.3.2 Sensitive Wildlife Species No sensitive wildlife species were observed onsite, however, the California gnatcatcher (Polioptila. californica) could be present in the coastal sage scrub habitat at the eastern edge of the property. A focused, protocol survey for this species was not conducted. 3.3.3 Sensitive Habitats and Wildlife Corridors Habitats. Sensitive habitats are those that 1) are considered rare within the region, 2) support sensitive plant and/or wildlife species, or 3) function as corridors for wildlife movement. Onsite, these include the coastal sage scrub, disturbed southern willow scrub, and the associated jurisdiction wetlands or "waters of the U.S." adjacent to the basin. Regionally, coastal sage scrub provides habitat for numerous sensitive plant and wildlife species. Animals confined primarily to this habitat include California 2755-01 ,& ASSOCIATES, INC. ,o»u /or Comply P,oj«u OCtObef 3, 2000 Biological Survey + Thompson Property gnatcatcher, cactus wren, orange-throated whiptail, and San Diego horned lizard. Sensitive plants characteristic of coastal sage scrub include San Diego barrel cactus, ashy spike-moss, and California adolphia. This habitat type has been reduced by about 70% of its former coverage in the County as a result of agriculture, urbanization, and other development. Wetlands, such as southern willow scrub, are recognized as important wildlife habitat. These areas provide a variety of resources that are unavailable in upland areas during the drier times of the year. Because these habitats are considered wetlands, they are under the jurisdiction of the U.S. Army Corps of Engineers (as wetlands or "waters of the U.S.") and the California Department of Fish and Game (as "wetlands"). Local and regional resource agencies have a rigid policy of no net loss of quantity or quality of wetland habitat. Intermittent streams, such as dry washes and narrow gullies, also may fall under the jurisdiction of the U.S. Army Corps of Engineers as waters of the U.S. Corridors. Due to the location of the property within a residential development and agricultural area, little corridor potential exists. The habitat located at the eastern edge of the property connects to additional native habitat offsite to the east, however, the habitat ends at Aviara Parkway. The patch of coastal sage scrub is a small-sized patch connected to a medium-sized patch and although it varies in quality, still provides important coastal sage scrub resources for providing a possibly territory and possible stepping-stone movement corridor for sensitive species such as the California gnatcatcher. Unfortunately, the patch of habitat does not connect to additional habitat to form a corridor to aid in providing for dispersal of wildlife species in the area. 5.0 REGULATORY PERMIT REQUIREMENTS 5.1 Coastal Sage Scrub Impacts Based on this reconnaissance survey and the staking that was done along the edge of the coastal sage scrub habitat within the proposed development, no mitigation will be required because no impacts will occur to coastal sage scrub. 2755-01 |& ASSOCIATES. INC. | " , 2000 8 Biological Survey • Thompson Property 5.2 Wetland or "Waters" Impacts Based on the preliminary site development plans, the southern willow scrub habitat will be impacted. Thus, it is anticipated that the 0.1 acre patch of southern willow scrub will be impacted. Permits from the ACOE, CDFG, and California Regional Water Quality Control Board (RWQCB) are required. Although the patch of willow habitat is extremely small, is very isolated from other native habitat, either upland or wetland, and is present due to the agriculture operation onsite, it is still regulated by the resource agencies. Mitigation is required for the impact. The discharge of dredge or fill material (temporary or permanently) into areas delineated as wetlands or "waters of the United States" requires authorization from the ACOE pursuant to Section 404 of the Clean Water Act. "Waters of the U.S." as defined in CFR 328.2 includes all waters or tributaries to waters, including wetlands, streams, dry washes, seasonal drainages, and other aquatic habitats. Activities that involve regulated discharge of dredge or fill material include grading, placing of riprap for erosion control, pouring concrete, laying sod, and stockpiling excavated material. Activities that generally do not involve regulated discharge, if performed in a manner to avoid discharge, include driving pilings and some methods of vegetation clearing. The ACOE has 36 nationwide or general permits (NWPs) that pre-authorize specific minor discharges if less than one-third of an acre. Generally, use of these NWPs does not require review by the ACOE or other federal agencies. If endangered species or significant cultural resources occur on the property and are not adequately mitigated, the activity is not considered pre-authorized and ACOE has the discretionary authority to require an individual permit. The individual permit process (for a Section 404) involves an alternatives analysis and public comment on the proposed activity and can last 180 days or longer. Based on the small size of the riparian habitat, it is likely that no permit would be required and the only requirement from the ACOE is that a pre-construction notification letter be submitted to describe the activity and impact. Prior to project implementation, a Section 401 water quality certification (or waiver) must be obtained from the California Regional Water Quality Control Board (RWQCB), and the ACOE should be notified in writing for concurrence that any proposed fill is authorized. The RWQCB requires the incorporation of features into the grading and development plan that ensure that the project will not adversely affect water quality. The types of features typically DWD.BK 2755-01 & ASSOCIATES, INC. Praftaimal Tram for ComUa P,,v,:u OCtObef 3, 2000 Biological Survey + Thompson Property incorporated into projects include desiltation basins, grease traps, revegetation of cut and fill slopes, and the use of sand bags and hay bales to inhibit erosion and siltation. All of these are considered features of a "Best Management Practices" approach. For streambed impacts, an application for a CDFG Section 1603 Streambed Alteration Agreement can be submitted only after an environmental impact report or negative declaration has been certified, or under a categorical exemption. The CDFG generally requires that any impacts to streambeds or adjacent riparian habitats be mitigated at a ratio of a minimum of 1:1 by area. Application for a Streambed Alteration Agreement must be accompanied by certified CEQA documentation for the proj ect and a wetland mitigation and monitoring plan, if applicable. It normally takes 30 days for the CDFG to process a 1603 application. Based on the reconnaissance survey of the property, the 0.1-acre patch of southern willow scrub is within the jurisdiction of the CDFG. Impacts to the patch require mitigation. Due to the small size, isolated nature and relatively disturbed quality of the habitat, it is anticipated that mitigation will be at a 2:1 ratio. The impact to the waters of the U.S. and southern willow scrub may be mitigated onsite if suitable acreage is available. A total mitigation acreage for southern willow scrub is likely to be 0.20 acre. This acreage may change after the applications have been submitted to the resource agencies. The project design includes open space onsite to function as detention basins. These basins, if the acreage is suitable, should be able to accommodate the mitigation for the impact to southern willow scrub. Table 2 below provides a suggested plant list for use in the open space mitigation area. TABLE 2 POTENTIAL CONTAINER STOCK, CUTTINGS, AND SEED MIX FOR RIPARIAN REVEGETATION Container Stock (optional) Populus fremontii - Fremont cottonwood Platanus racemosa - western sycamore Cuttings Salix lasiolepis - arroyo willow Salix gooddingii - southwestern willow Salix hindsiana - sandbar willow 2755-01 & ASSOCIATES, INC. | ' nmi /or C«m(.l«< Pro/tru OCtObef 3, 2000 1 0 Biological Survey • Thompson Property Seed Mix Ambrosia, psilostachya - western ragweed Artemisia douglasiana - mugwort Artemisia palmeri - San Diego sagewort Baccharis salicifolia - mule fat Eleocharis macrostachya - pale spike-rush Isocoma menziesii - coast goldenbush Iva hayesiana - San Diego marsh-elder Juncus dubius - mariposa rush Frankenia salina - Alkali-heath Distichlis spicata - salt grass Please feel free to contact me at (760) 942-5147 with questions or if you require additional information. I look forward to working with you on this project. We would be able to respond immediately to your needs for preparing the required documents. Very truly yours, DUDEK & ASSOCIATES, INC. Anita M. Hayworth, Pj Biologist V AMH/tsf Attachment: Figures 1, Regional Map figure 2, Vicinity Map figure 3, Biological Resources Map cc: Jack Henthorn, Jack Henthorn & Associates ACKNOWLEDGMENTS This report was prepared by Anita M. Hayworth, Ph.D. Martie demons prepared the graphic illustrations. 2755-01 & ASSOCIATES, INC. I Pn>J,u/o«J liam fa fompla Projcoi OCtObef 3, 2000 11 Biological Survey • Thompson Property LITERATURE CITED American Ornithologists' Union. 1983. The check-list of North American birds, 6th edition. Allen Press, Lawrence, Kansas. American Ornithologists' Union. 1989. Thirty-seventh supplement to the American Ornithologists' Union check-list of North American birds. The Auk 106:532-538. Beauchamp, R. M. 1986. A flora of San Diego County, California. Sweetwater Press, National City, California. 241 pp. Bond, S. I. 1977. An annotated list of the mammals of San Diego County, California. Trans. San Diego Soc. Nat. Hist. 18(14) :229-248. California Department of Fish and Game. 1980. At the crossroads: A report on the status of California's endangered and rare fish and wildlife. State of California Resources Agency, Sacramento. California. California Department of Fish and Game. 1986. Endangered, rare, and threatened animals of California. State of California Resources Agency, Sacramento, California. California Department of Fish and Game. 1987. Designated endangered or rare plants. Summary list from Section 1904 Fish and Game Code (Native Plant Protection Act). State of California Resources Agency, Sacramento, California. Everett, W. T. 1979. Threatened, declining, and sensitive bird species in San Diego County. San Diego Audubon Society Sketches 29:2-3. Hickman, J. C. 1993. The Jepson manual: higher plant of California. University of California Press, Berkeley. 1400 pp. Holland, R. F. 1986. Preliminary descriptions of the terrestrial natural communities of California. Nongame-Heritage Program, California Department of Fish and Game. 2755-01 & ASSOCIATES, INC. ======^=^^^====^^^^=======^^=^^^^^^===^====^^^===^^ii= ., 2000 12 Biological Survey • Thompson Property Jones, J. K., Jr., D. C. Carter, H. H. Genoways, R. S. Hoffman, and D. W. Rice. 1992. Revised checklist of North American mammals north of Mexico. Occasional Papers of the Museum of Texas Tech University, no. 148. McGurty, B. M. 1980. Survey and status of endangered and threatened species of reptiles natively occurring in San Diego, California. San Diego Herpetological Society. Munz, P. 1974. A flora of southern California. University of California Press, Berkeley, California. 1086pp. Reed, P. B. 1988. National list of plant species that occur in wetlands: California (Region 0). U.S. Fish and Wildlife Service Biological Report 88 (26.10). Remsen, J. V. 1978. Bird species of special concern in California: An annotated list of declining or vulnerable bird species. Nongame Wildlife Investigations, Wildlife Management Branch, California Department of Fish and Game. Administrative Report No. 78-1. Skinner, M. W. and B. M. Pavlik. 1994. California Native Plant Society's inventory of rare and endangered vascular plants of California. Special Publication No. 1 (5th Edition), California Native Plant Society, Sacramento, California. 338 pp. Stebbins, R. C. 1985. A field guide to western reptiles and amphibians. Houghton Mifflin Co., Boston. 336 pp. Unitt, P. A. 1984. Birds of San Diego County. Memoir 13, San Diego Soc. Nat. Hist. 276 pp. United States Fish and Wildlife Service (USFWS). 1989. Federal Register, Part 4, Endangered and Threatened Wildlife and Plants; Animal Notice of Review. 50 CFR Part 17. Department of the Interior. United States Fish and Wildlife Service (USFWS). 1990. Federal Register, Part 4, Endangered and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or Threatened Species, Notice of Review. 50 CFR Part 17. Department of the Interior. 2755-01 1,2000 13 Biological Survey • Thompson Property United States Fish and Wildlife Service (USFWS). 1991. Federal Register, Part 8, Endangered and Threatened Wildlife and Plants; Animal Candidate Review for Listing as Endangered or Threatened Species, Proposed Rule. 50 CFR Part 17. Department of the Interior. United States Fish and Wildlife Service (USFWS). 1993. Federal Register, Part 8, Endangered and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or Threatened Species. 50 CFR Part 17. Vol.58. No. 188. Department of the Interior. U.S. Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1, U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, Mississippi. 2755-01 & ASSOCIATES, INC. I Prof,u/«wilT«»>.fo.f»nl>l««Pr<,i«u OCtCte" 3, 2000 14 APPENDICES & ASSOCIATES, INC. Professional Teams for Complex Projects Biological Survey + Thompson Property APPENDIX A VASCULAR PLANT SPECIES OBSERVED ON THE PROJECT SITE ANGIOSPERMAE (DICOTYLEDONES) ANACARDIACEAE - SUMAC FAMILY Rhus integrifolia - lemonadeberry Malosma laurina - laurel sumac APIACEAE - CARROT FAMILY * Foeniculum vulgare - sweet fennel ASTERACEAE - SUNFLOWER FAMILY Artemisia californica - coastal sagebrush Baccharis pilularis ssp. consanguinea - coyote brush * Carduus pycnocephalus - Italian thistle * Centaurea melitensis - tocalote * Chrysanthemum coronarium - garland chrysanthemum * Conyza canadensis - common horseweed Encelia californica - California bush sunflower Hemizonia fasciculata - fascicled tarweed Heterotheca grandiflora - telegraph weed BRASSICACEAE - MUSTARD FAMILY * Brassica nigra - black mustard * Raphanus sativus - wild radish CACTACEAE - CACTUS FAMILY Opuntia littoralis - coastal prickly-pear CHENOPODIACEAE - GOOSEFOOT FAMILY * Salsola tragus - Russian-thistle 2755-01 & ASSOCIATES, INC. I Pro/tuional Team, /or Comply Ploj«u OCtObef 3, 2000 Biological Survey • Thompson Property FABACEAE - PEA FAMILY Lotus scoparius - deerweed LAMIACEAE - MINT FAMILY Salvia mellifera - black sage MALVACEAE - MALLOW FAMILY Malocothamnus fasciculatus - mesa bushmallow MYRTACEAE - MYRTLE FAMILY * Eucalyptus sp. - eucalyptus POLYGONACEAE - BUCKWHEAT FAMILY Eriogonutn fasciculatum - flat-top buckwheat PRIMULACEAE - PRIMROSE FAMILY * Anagallis arvensis - scarlet pimpernel ROSACEAE - ROSE FAMILY Heterotneles arbutifolia - toyon SAURURACEAE - LIZARD-TAIL FAMILY Anemopsis californica - yerba mansa Eriodictyon crassifolia - yerba santa SCROPHULARIACEAE - FIGWORT FAMILY Mimulus aurantiacus - bush monkeyflower SALICACEAE - WILLOW FAMILY Salix lasiolepis - arroyo willow Salix laevigata - red willow SOLANACEAE - NIGHTSHADE FAMILY * Nicotiana glauca - tree tobacco TAMARICACEAE - TAMARISK FAMILY * Tamarix sp. - tamarisk 2755-01 & ASSOCIATES, INC. | = , 2000 Biological Survey • Thompson Property ANGIOSPERMAE (MONOCOTYLEDONES) LILIACEAE - LILY FAMILY Yucca whippki - our lord's candle POACEAE - GRASS FAMILY * Arundo donax - giant cane * Avena barbata - slender oat * Avena fatua - wild oats * Brotnus diandrus - ripgut grass * Bromus hordeaceus - soft chess * Bromus madritensis ssp. rubens - foxtail chess * Conaderia jubata - Atacama pampas grass * Lolium muhiflorum - English ryegrass denotes non-native, introduced species 2755-01 & ASSOCIATES, INC. I Pro/tuiond limu fr, Complu P,,.|,tu OCtObCr 3, 2000 Biological Survey • Thompson Property APPENDIX B WILDLIFE SPECIES OBSERVED OR DETECTED ON THE PROJECT SITE REPTILES IGUANIDAE - IGUANID LIZARDS Uta stansburiana elegans - side-blotched lizard Sceloporus occidentalis longipes - Great Basin fence lizard BIRDS COLUMBIDAE - PIGEONS & DOVES Zenaida macroura - mourning dove TROCHILIDAE - HUMMINGBIRDS Calypte anna - Anna's hummingbird TYRANNIDAE - TYRANT FLYCATCHERS Sayornis nigricans - black phoebe Tyrannus verticalis - western kingbird CORVIDAE - JAYS & CROWS Aphelocoma coerulescens - scrub jay Corvus corax - common raven MIMIDAE - THRASHERS Mimus polyglottos - northern mockingbird AEGITHALIDAE - BUSHTITS Psahriparus minimus - bushtit ^ 2755-01 , 2000 1 Biological Survey • Thompson Property TROGLODYTIDAE - WRENS Thryomanes bewickii - Bewick's wren EMBERIZIDAE - WOOD WARBLERS, TANAGERS, BUNTINGS & BLACKBIRDS Pipilo crissalis - California towhee Sturnella ne.gle.cia - western meadowlark FRINGILLIDAE - FINCHES Carpodacus mexicanus - house finch Carduelis psahria - lesser goldfinch MAMMALS SCIURIDAE - SQUIRRELS Syermophilus beecheyi - California ground squirrel (obs.) 2755-01 i, 2000 2 Biological Survey 4- Thompson Property Federal (1993) Endangered: Threatened: Category 1: Category 2: Category 3 APPENDIX C SPECIES SENSITIVITY CATEGORIES Taxa threatened throughout all or a significant portion of their range. Taxa likely to become endangered in the foreseeable future. Taxa for which the USFWS currently has on file substantial information on biological vulnerability and threat(s) to support the appropriateness of proposing to list them as endangered or threatened species. Taxa for which information now in possession of the USFWS indicates that proposing to list them as endangered or threatened is appropriate but for which substantial data on biological vulnerability and threat (s) are not known or on file to support the immediate preparation of rules. Taxa that were once considered for listing as endangered or threatened, but are currently not receiving such consideration. These taxa are included in one of the following three subcategories. Subcategory 3A: Taxa presumed to be extinct. Subcategory 3B: Taxa whose names do not meet the Endangered Species Act's legal definition of species. Subcategory 3C: Taxa now considered to be more widespread that originally thought. Note: The taxa in Categories 1 and 2 are candidates for possible addition to the list of endangered and threatened species. The USFWS encourages their consideration in environmental planning. & ASSOCIATES, INC. 2755-01 Pro/euionoJ Teonu for Complex Pro/pcti , 2000 Biological Survey • Thompson Property State of California (1990) Endangered: Taxa which are in serious danger of becoming extinct throughout all, or a significant portion, of their range due to one or more causes including loss of habitat, change in habitat, over exploitation, predation, competition, or disease (Section 2062 of the Fish and Game Code). Threatened: Taxa which, although not presently threatened with extinction, are likely to become endangered species in the foreseeable future (Section 2067 of the Fish and Game Code). Rare: Taxa which, although not presently threatened with extinction, are present in such small numbers throughout their range that they may become endangered if the present environment worsens (Section 1901 of the Fish and Game Code). Candidate: Taxa which the Fish and Game Commission has formally noticed as being under review by the Department in addition to the list of threatened and endangered species. California Native Plant Society (1995) Lists 1A: Presumed Extinct in California IB: Rare or Endangered in California and Elsewhere 2: Rare or Endangered in California, More Common Elsewhere 3: Need More Information 4: Plants of Limited Distribution Note: Plants on CNPS list IB meet California Department of Fish and Game Criteria for Rare or Endangered listing. mmimm |& ASSOCIATES, INC. | jfer Compltx Pro/n-u 2755-01 , 2000 Biological Survey • Thompson Property R-E-D code R (Rarity) 1- Rare, but found in sufficient numbers and distributed widely enough that the potential for extinction or extirpation is low at this time. 2- Occurrence confined to several populations or to one extended population. 3- Occurrence limited to one or a few highly restricted populations, or present in such small numbers that it is seldom reported. E (Endangerment) 1- Not endangered 2- Endangered in a portion of its range 3- Endangered throughout its range D (Distribution) 1- More or less widespread outside of California 2- Rare outside California 3- Endemic to California 2755-01 |& ASSOCIATES, INC. P™/«ulo~J Tnon, V Compla Pro/'c-u OCtObef 3, 2000 Orange County Mexico 1"-8 Miles Tijuana Thompson Property • Biological Resources Letter Report & Impact Analysis Regional Map BASE MAP SOURCE: USGS 7.5 Minute Series, Encinitas Quadrangle 1--2000' Thompson Property • Biological Resources Letter Report & Impact Analysis Vicinity Map