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HomeMy WebLinkAbout3598; MELROSE DRIVE EXTENSION; BIOLOGICAL TECHNICAL REPORT; 1999-08-12RECON NUMBER 302B AUGUST 12.1999 4241 Jutland Drive, Suite 201 San Diego, CA 92117-3653 619 / 270-5066 fax 270-5414 -. I'P1iIULA1I C) This document printed on recycled paper -' , TABLE OF CONTENTS Summary of Findings 3 Introduction Methods Results Topography and Soils Botany Zoology Sensitive Biological Resources Project Impacts Plant Community Impacts Non-$ensitive Wildlife Impacts Sensitive Biological Resources Impacts Mitigation Measures and Recommendations Riparian Plant Communities Upland Communities Wildlife Movement CorridorsfHMP Coastal California Gnatcatcher References Cited FIGURES Regional location of the project Project vicinity Vegetation and sensitive resources Project impacts, vegetation, and sensitive resources Ell 7 7 8 10 11 26 26 28 28 29 30 30 30 30 31 4 5 9 27 TABLE OF CONTENTS (cont.) TABLES Survey Dates, Times, and Conditions 7 Sensitive Plant Species Observed or with the Potential for Occurrence 14 Sensitivity Codes 17 Sensitive Wildlife Species Potentially Occurring on the Site 18 Melrose Drive Plant Community Acreages and Impacts 28 Mitigation Ratios and Acreage Requirements for Impacts to Sensitive Plant Communities 30 ATTACHMENTS Plant Species Observed - Wildlife Species Observed/Detected on the Site Summary of Findings The proposed Melrose Drive road construction would impact 0.33 acre of Diegan coastal sage scrub, 0.50 acre of baccharis-dominated scrub, 2.09 acres of southern mixed chaparral, 1.84 acres of agriculture, 0.49 acre of southern willow scrub, 3.79 acres of non-native grasslands, 3.25 acres of disturbed, and 0.01 acre of coastal and valley freshwater marsh. Mitigation will be required for impacts to southern willow scrub, coastal and valley freshwater marsh, and southern mixed chaparral. No impacts to any state or federally listed threatened or endangered plant or wildlife species are anticipated. Mitigation for impacts to southern willow scrub and coastal and valley freshwater marsh would require the creation and enhancement of similar habitat. In addition, a 404 permit from the U.S. Army Corps of Engineers (USACE), a 401 water quality certificate from the Regional Water Quality Control Board, and a Streambed Alteration Agreement from the California Department of Fish and Game (CDFG) are required. Impacts to the Habitat Management Plan preserve area and wildlife movement corridors will be mitigated by the construction of a wildlife undercrossing connecting habitats to the east and west of the project area. Introduction The Melrose Drive road alignment is located east of the intersection of El Camino Real and Palomar Airport Road in the city of Carlsbad, California (Figures 1 and 2). The project location lies along a tributary to Agua Hedionda Creek. The Carlsbad Raceway lies to the east, Palomar Airport road to the south, developed areas to the north, and open space to the west. The project proposes to construct a road extending Melrose Drive south approximately one-quarter mile to Palomar Airport Road. The road would be constructed on fill, including fill in the creek drainage. As part of earlier projects, fill has been placed in the creek drainage and a large-diameter (about 10 feet) culvert placed to allow drainage flows to pass downstream. The project will replace the culvert with a new headwall and culvert of 36 inches in diameter to restrict large-volume flows, thus detaining storm water on the upstream, eastern side of the road fill. A riser will be installed to allow overflows at a calculated height of detention. Other than the placement of road fill, the headwall, and riser, and some recontouring of the creek at the headwall, there will be no grading to create the detention basin. Existing contours and vegetation will remain unaltered in the detention basin upstream from the headwall. 3 I J \ I /VAND \ ,# I / slo / BL. VISTA OCEANSIDE X\ PROJECT LOCATION BUENA VISTA LAGOON CARLSBAD LAGOON 0. LAKE SAN M kTI) BATIQUITOS 0 LEUCADIA ENCINITAS ENCINIT 9Z'iô 4 2 MILES 0 FIGURE 1 Regional Location of the Project 0 sr 11 V1 PROJECT LOCATION Ji 300 I; 01, \• CLSD '- FRQ 56 0 lb ___II4 Map Source: U.S.G.S. 7.5 minute topographic maps, San Marcos, Encinitas, Rancho Santa Fe, and San Luis Rey quadrangles. 0 4000 2000 FEET 0 FIGURE 2 Project Vicinity This report provides biological data and background information required for environmental analysis by the City of Carlsbad's Habitat Management Plan and the California Environmental Quality Act (CEQA). Methods RECON biologists Markus Spiegelberg and Carrie Stewart surveyed the property during the months of March through July, 1999. Surveyors walked through all areas of the property, surveying all habitats present. Animal species were either observed directly with the aid of binoculars or detected indirectly from call, tracks, scat, nests, or other sign. Plant species that could not be identified in the field were brought to the RECON office for closer inspection and positive identification. Since surveys were performed during the day, nocturnal animals would not have been observed directly. Biological resources were mapped on air photos and later digitized using ARC/INFO geographic information system (GIS). Previous studies within the project area include the Biological Technical Report for the Rancho Carrillo Master Plan (RECON 1992). Information on sensitive species sightings, locations, and vegetation types was used from this document. Carrie Stewart conducted botanical surveys across the entire site and mapped vegetation within the detention basin and wetland areas on March 19 and May 11, 1999. Markus Spiegelberg mapped the site's vegetation on March 10, 1999. Botanical surveys included focused surveys for dot-seed plantain (Plantago erecta), the larval host plant of the federally listed endangered quino checkerspot butterfly (Euphydryas editha quino). Markus Spiegelberg (U.S. Fish and Wildlife Service [USFWS] Permit No. PRT-787924) conducted focused surveys for coastal California gnatcatcher (Polioptila calfornica calzfornica), least Bell's vireo (Vireo bellii pusillus), and southwestern willow flycatcher (Empidonax traillii extimus) according to USFWS guidelines (USFWS 1997, 1999; Sogge 1997). Taped vocalizations were used to elicit calls. Surveys for coastal California gnatcatcher include three site visits separated by at least seven days. Surveys for least Bell's vireo include eight visits separated by at least ten days, and surveys for southwestern willow flycatcher include three site visits, with one survey required within the dates of May 15-31, June 1-21, and June 22—July 10. Surveys for least Bell's vireo and southwestern willow flycatcher were conducted concurrently. Table 1 shows the dates, times, and weather conditions of the 1999 focused surveys. rel TABLE 1 SURVEY DATES, TIMES, AND WEATHER CONDITIONS Date Species Time Weather Conditions March 10, 1999 CAGN 8:45-10:20 A.M. Partly cloudy, slight breeze, 62° F March 18, 1999 CAGN 8:45-10:20 A.M. Partly cloudy, slight breeze, 62-63° F March 29, 1999 CAGN 10:30-11:30 A.M. Clear, slight breeze, 68-70° F April 21, 1999 LBV 9:20-10:30 A.M. Overcast, slight breeze, 65-68° F May 3, 1999 LBV 10:30-11:00 A.M. Overcast, calm, 65° F May, 17, 1999 LBV, WIFL 10:30-11:15 A.M. Clear, calm, 75° F May 28, 1999 LBV 10:30-11:15 A.M. Overcast, calm, 70° F June 15, 1999 LBV, WIFL 7:00-8:30 A.M. Partly cloudy, calm, 65-68° F June 24, 1999 LBV 9:45-10:30 A.M. Clear, calm, 68° F July 6, 1999 LBV, WIFL 8:15-9:20 A.M. Overcast, calm, 68° F July 16, 1999 LBV 10:30-11:15 A.M. Clear, calm, 75-80° F CAGN = coastal California gnatcatcher, LBV = least Bell's vireo, WIFL = southwestern willow flycatcher, F.= Fahrenheit. Floral nomenclature follows Hickman (1993), while plant community classifications follow the California Natural Diversity Data Base (NDDB) (Holland 1986). Zoological nomenclature for birds is in accordance with the American Ornithologists' Union Checklist (1998); for mammals, Jones et al. (1982); and for amphibians and reptiles, Collins (1997). Assessments of the sensitivity of species and habitats are based primarily on Tate (1986), State of California (1998a, 1998b), Skinner and Pavlik (1994), and Holland (1986). Results A. Topography and Soils Elevation on-site ranges from approximately 100 to 250 feet above mean sea level (MSL). The present condition of the site is natural habitat and drainages with disturbed areas. The topography is relatively flat along the southern portion of the site and slopes to the north along the northern portion of the site. Soils on-site consist of Altamont clay. Altamont clay consists of well-drained clays that formed in material weathered from calcareous shale. Slopes range from 0 to 30 percent 7 slope with medium runoff and moderate erosion hazard (U.S. Department of Agriculture 1973). B. Botany The following sections describe the plant communities that occur on the proposed project site. The project site supports five native plant communities, disturbed areas, agriculture, and non-native grasslands (Figure 3). A total of 82 plant species were observed, of which 59 (72 percent) are native to southern California. A complete list of plant species observed on-site at the time of surveys is given in Attachment 1. Southern Mixed Chaparral (2.16 acres) Southern mixed chaparral is located near the eastern portion of the project site within the road footprint. The dominant plant species include scrub oak (Quercus dumosa), toyon (Heteromeles arbutifolia), chamise (Adenostoma fasciculatum) and lemonadeberry (Rhus integrfolia). Other species include mission manzanita (Xylococcus bicolor), black sage (Salvia mellifera), and coastal sagebrush (Artemisia calfornica). Southern Willow Scrub (2.38 acres) Southern willow scrub is located near the eastern portion of the project site within the road footprint and detention basin. This community has little understory and is disturbed by off-road tracks, non-native vegetation, and debris. The dominant plant species is arroyo willow (Salix lasiolepis). Other native plant species include coast live oak (Quercus agrifolia), blue elderberry (Sambucus mexicana), and toyon. Non-native plant species include giant reed (Arundo donax) and Washington palm (Washingtonia robusta). Disturbed (5.03 acres) Disturbed areas are located along the southern portion of the project site and within the southern willow scrub near the northern portion of the site. Disturbed areas include off- road vehicle tracks and roads lacking vegetation. Coastal and Valley Freshwater Marsh (0.37 acre) Coastal and valley freshwater marsh is located within the detention basin and is represented by a pond and vegetation found along the perimeter of the pond. The dominant plant species is cattail (Typha sp.). Other species observed include mugwort (Artemisia douglasiana), curly dock (Rumex crispus), and water cress (Rorippa nasturtium-a quaticum). N. UO :... Sensitive Species ; W G California gnatcther QumoChecket Butterfly Host Plant Dot-seed plantain Vegetation Communities Fil Diegan coastal sage scrub Southern maritime chaparral Southern willow scrub Coastal 'and valley freshwatermarsh Non- 'ative grassland I 'Agriculture Di turbed: Project Boundary 21 20 Foot er _e tention nth0ff J / C1sba aCeW W FIGU • • 1 • •t • Vegetation and • • • • • Sensitive Resources Palo Ort Mod 32b\gis\vegapfig3 FEE 0 400 200 Non-native Grassland (3.79 acres) Non-native grassland occurs in the middle portion of the road footprint. The dominant plant species is the non-native ripgut grass (Bromus diandrus). Other species include black mustard (Brassica nigra), radish (Raphanus sativus), and wild oat (Avena sp.). Agriculture (1.84 acres) Agricultural land occurs on the southern portion of the footprint. At the time of surveys, the land had been recently disked for planting. Diegan Coastal Sage Scrub (0.85 acre) A small portion of Diegan coastal sage scrub is located near the southwestern boundary of the project site. Dominant plant species include coastal sagebrush, laurel sumac (Malosma laurina), and California buckwheat (Eriogonum fasciculatum var. fasciculatum). Other species include broom baccharis (Baccharis sarothroides), California broom (Lbtus scoparius), and lemonadeberry. Baccharis Scrub (0.98 acre) Baccharis scrub, *dominated by broom baccharis, is located near the northern portion of the project area. This plant community is classified as a subassociation of coastal sage scrub and is most likely an early successional state of coastal sage scrub. Other plant species observed within the baccharis-dominated scrub include laurel sumac, California broom, and wild oats. C. Zoology A complete list of wildlife species observed or detected on the site at the time of surveys is given in Attachment 2. Amphibians No amphibian species were detected during surveys. Amphibian species expected to occur include tree frog (Hyla regilla) and bullfrog (Rana catesbeiana). Reptiles One reptile species, the side-blotched lizard (Uta stansburiana), was observed within the sycamore woodland. Other reptiles expected to occur include western fence lizard (Sceloporus occidentalis), alligator lizard (Elgaria multicarinata webbi), and California kingsnake (Lampropeltis getulus calforniae). 10 Birds Bird species observed within the upland plant communities include California towhee (Pipilo crissalis), western scrub-jay (Aphelocoma calfornica), wrentit (Chamaea fasciata henshawi), and spotted towhee (Pipilo maculatus). Bird species observed within the southern willow scrub and pond areas include Nuttall's woodpecker (Dendrocopos nuttallii), black phoebe (Sayornis nigricans semiatra), house finch (Carpodacus mexicanus frontalis), ruby-crowned kinglet (Regulus calendula), and yellow-rumped warbler (Dendroica coronata). Raptor species observed include red-tailed hawk (Buteo jamaicensis calurus) and red-shouldered hawk (Buteo lineatus elegans). Raptor species with potential to occur include white-tailed kite (Elanus leucurus) and Cooper's hawk (Accipiter cooperii). These raptor species are expected to forage over the site but are unlikely to nest due to the limited size and density of the southern willow scrub on-site. Mammals Mammal species observed include the California ground squirrel (Spermophilus beecheyi), cottontail rabbit (Sylvilagus audubonii), and woodrat (Neotoma sp.). Other species expected to occur include raccoon (Procyon lotor), striped skunk (Mephitis mephitis), coyote (Canis latrans), and small mammals such as pocket mice (Chaetodipus sp.) and those of the genus Peromyscus. D. Sensitive Biological Resources For purposes of this report, species will be considered sensitive if they are (1) listed as a HMP covered species or narrow endemic species, (2) listed by state or federal agencies as threatened or endangered or proposed for listing; (3) on List lB (considered endangered throughout its range) or List 2 (considered endangered in California but more common elsewhere) of the California Native Plant Society's (CNPS) Inventory of Rare and Endangered Vascular Plants of California (Skinner and Pavlik 1994); or (4) considered rare, endangered, or threatened by the NDDB (State of California 1998a, 1998b) or local conservation organizations or specialists. Noteworthy plant species are considered to be those which are on List 3 (more information about the plant's distribution and rarity needed) and List 4 (plants of limited distribution) of the CNPS Inventory. Sensitive habitat types are those identified by the NDDB (Holland 1986) or identified by the City of Carlsbad's (1999) Habitat Management Plan (HMP). HMP covered species are those species which will be included in the incidental take authorization issued to the City of Carlsbad by the federal and state governments as part of the City's Habitat Management Plan. The term "non-covered species" is sometimes used to identify species not included in the incidental take authorization. Mitigation procedures and protection of covered species depends on the location of the project site (i.e., within or outside the proposed core preserve area) and the nature of project impacts. State and federal agencies regulate non-covered sensitive species. Raptors (birds of prey) and raptor nests are protected by the California Fish and Game Code 3503.5, which states that it is "unlawful to take, possess, or destroy any birds of prey or to take, possess, or destroy the nest or eggs of any such bird" unless authorized. Assessments for the potential occurrence of sensitive or noteworthy species are based upon known ranges and habitat preferences for the species and species occurrence records from the NDDB. Wetlands/Jurisdictional Areas Southern willow scrub and coastal and valley freshwater marsh are under the jurisdiction of the USACE and CDFG. A wetland delineation was performed on-site in 1999 and the results will be provided in a separate report. Sensitive Plant Species Observed No federal or state listed endangered or threatened plant species were observed within the project limits. California adolphia (Adoiphia calfornica) and ashy spike-moss (Selaginella cinerascens) were observed on-site. These species are discussed below. Ashy spike-moss (Selaginella cinerascens). Ashy spike-moss is a small, prostrate perennial herb that is found in Orange and San Diego Counties south into northern Baja California. This plant occurs on dry slopes and mesas in openings in coastal sage scrub and chaparral vegetation. This plant is a CNPS List 4 species due to its restricted range. This species has declined because of development (Skinner and Pavlik 1994). This species was found in the coastal sage scrub areas along the western portion of the property. California adolphia (Adoiphia californica). California adolphia is considered rare and is described as a List 2 status by CNPS. This species is a deciduous shrub that blooms a small white flower between December and April. Locally, adolphia tends to grown on dry slopes below 1,000 feet. In San Diego County, this species has been found in the foothills and coastal regions near Rancho Santa Fe. Clay soils of chaparral and coastal scrub characterize its habitat. One individual California adolphia was observed within the detention basin area on-site. It has potential to occur within the road footprint. 12 Sensitive Plant Species with the Potential to Occur A list of sensitive plant species that have potential to occur on-site are listed in Table 2, with an explanation of sensitivity codes listed in Table 3. Sensitive Plant Communities Five habitats that occur on-site are considered sensitive by resource agencies due to either restricted range or cumulative losses throughout the region. These communities are southern willow scrub, coastal and valley freshwater marsh, southern mixed chaparral, baccharis scrub, and Diegan coastal sage scrub. Sensitive Wildlife Species Detected On-Site No federal or state listed threatened or endangered wildlife species were observed within the project site. One federally listed threatened species, the coastal California gnatcatcher, was observed in adjacent habitat east of the project site. The coastal California gnatcatcher and other sensitive species that have the potential to occur on-site are discussed in Section 6. Sensitive Wildlife Species with the Potential to Occur On-Site Sensitive species with the potential to occur are noted in Table 4. These species include coastal California gnatcatcher, yellow warbler, yellow-breasted chat, Cooper's hawk, white-tailed kite, sharp-shinned hawk, least Bell's vireo, southwestern willow flycatcher, quino checkerspot butterfly, and arroyo southwestern toad. These species are discussed below. Coastal California gnatcatcher (Polioptila californica californica). The coastal California gnatcatcher is a small blue-gray bird known by its mewlike call. The distribution of this species ranges from Ventura County south to northern Baja California, Mexico (Atwood 1990). Gnatcatchers occur year-round in or near sage scrub habitat and also use chaparral and riparian woodland where these habitats are found adjacent to sage scrub. The breeding season begins during mid-March and generally ends by late June. Gnatcatchers are listed as threatened by the USFWS and as a CDFG species of special concern. The primary cause for the decline of this species is habitat loss due to urbanization. It is currently one of the focal species for conservation under the Natural Community Conservation Plan process and is an HMP covered species. No coastal California gnatcatchers were observed within the project footprint. However, a pair was observed in adjacent habitat to the east of the project site. Gnatcatchers are unlikely to nest within the project footprint because of the small area and fragmented nature of coastal sage scrub located on-site. However, they are likely to traverse the site 13 TABLE 2 SENSITIVE PLANT SPECIES OBSERVED (t) OR WITH THE POTENTIAL FOR OCCURRENCE City of State/Federal Carlsbad CNPS CNPS Typical Habitat/Comments Species Status Status List Code Acanthomintha ilicfolia CE/FT NE, lB 2-3-2 Chaparral, coastal sage scrub, San Diego thommint HMP valley and foothill grassland/ clay soils. Observed in vicinity. Not observed on-site during surveys. Adoiphia californicat 2 1-2-1 Chaparral. Observed in vicinity California adolphia and within detention basin. Ambrosia pumila NE, lB 3-2-2 Creekbeds, seasonally dry San Diego ambrosia HMP drainages, floodplains. Not observed. Not expected to occur. Arctostaphylos glandulosa —/FE NE, lB 3-3-2 Coastal chaparral. Observed in ssp. crassifolia HMP vicinity. Not observed on-site Del Mar manzanita during surveys. Artemisiapalmeri 2 2-2-1 Coastal sage scrub, chaparral, San Diego sagewort riparian. Not observed. Baccharis vanessae CE/FT NE, lB 2-3-3 Chaparral. Not observed. Encinitas coyote bush HMP Berberis nevinii (=Mahonia nevinii) CE/FE lB 3-3-3 Chaparral, coastal sage scrub. Nevin's barberry Not observed. Brodiaeafihifolia CE/FT HMP lB 3-3-3 Valley and foothill grassland, Thread-leaved brodiaea vernal pools. Observed in vicinity. Not observed on-site during surveys. Brodiaea orcuttii HMP lB 1-3-2 Closed-cone coniferous forest, Orcutt's brodiaea meadows, cismontane wood- land, valley and foothill grass- land, vernal pools. Not observed during surveys. Low potential to occur. Ceanothus verrucosus HMP 2 1-2-1 Chaparral. Not observed during Wart-stemmed ceanothus surveys. Low potential to occur. TABLE 2 SENSITIVE PLANT SPECIES OBSERVED (t) OR WITH THE POTENTIAL FOR OCCURRENCE (continued) City of State/Federal Carlsbad CNPS CNPS Typical Habitat/Comments Species Status Status List Code CE/FE NE, lB HMP HMP lB 2 4 NE, lB HMP HMP lB HMP 2 HMP 2 2 Chorizanthe orcuttiana Orcutt' s spineflower Coma rostaphylis diversfo1ia ssp. diversifolia Summer holly Coreopsis rnaritima Sea dahlia Dichondra occidentalis Western dichondra Dudleya blochmaniae ssp. blochmaniae Blochman's dudleya Dudleya viscida Sticky-leaved liveforever Euphorbia misera Cliff spurge Ferocactus viridescens Coast barrel cactus Harpagonella palmeri var. palmeri Palmer's grappling hook Hazardia orcuttii Orcutt' s hazardia Iva hayesiana San Diego marsh elder 3-3-3 Coastal sage scrub; Del Mar to Point Loma, San Diego County. Not observed during surveys. Low potential to occur. 2-2-2 Chaparral. Observed in vicinity but not on project site. 2-2-1 Coastal sage scrub, coastal bluff scrub. Not observed. 1-2-1 Chaparral, cismontane wood- land, coastal sage scrub, valley and foothill grassland. Not observed during surveys. Low potential to occur. 2-2-2 Coastal sage scrub. Not observed. 3-2-3 Coastal sage scrub. Not observed during surveys. Low potential to occur. 2-2-1 Coastal sage scrub. Not observed during surveys. 1-3-1 Chaparral, coastal sage scrub, valley and foothill grassland. Not observed during surveys. 1-2-1 Chaparral, coastal sage scrub, valley and foothill grassland. Observed in vicinity. Not observed on-site during surveys. 3-3-2 Chaparral, coastal sage scrub. Not expected to occur. 2-2-1 Riparian, playas. Not observed during surveys. NE, lB HMP 2 TABLE 2 SENSITIVE PLANT SPECIES OBSERVED (t) OR WITH THE POTENTIAL FOR OCCURRENCE (continued) City of State/Federal Carlsbad CNPS CNPS Typical Habitat/Comments Species Status Status List Code Juncus acutus ssp. leopoldii (=Juncus acutus ssp. sphaerocarpus) Spiny rush Muilla clevelandii San Diego goldenstar Ophioglossum californicum (=Ophioglossum lusitanicum ssp. calfornicum) California adder's-tongue fern Quercus dumosa Nuttall's scrub oak Selaginella cinerascenst Ashy spike-moss 4 1-2-1 Coastal dunes (mesic), meadows (alkaline), coastal salt marsh. Observed in vicinity. Not observed on-site during surveys. NE, lB 2-2-2 Chaparral, coastal sage scrub, HMP valley and foothill grassland, vernal pools. Not observed during surveys. 4 1-2-2 Clay mesa soils. Not observed during surveys. liMP lB 2-3-2 Coastal chaparral. Not observed. Potential to occur. 4 1-2-1 Chaparral, coastal sage scrub. Observed on-site. Tetracoccus dioicus lB 3-2-2 Chaparral, coastal sage scrub. Parry's tetracoccus Not observed during surveys. NOTE: See Table 3 for explanation of sensitivity codes. TABLE 3 SENSITIVITY CODES FEDERAL CANDIDATES AND LISTED PLANTS FE = Federally listed, endangered FT = Federally listed, threatened FPE = Federally proposed endangered FPT = Federally proposed threatened STATE LISTED PLANTS CE = State listed, endangered CR = State listed, rare CT = State listed, threatened CITY OF CARLSBAD NE = Narrow endemic HMP = Habitat Management Plan covered species list CALIFORNIA NATIVE PLANT SOCIETY LISTS R-E-D CODES JA = Species presumed extinct. R (Rarity) lB = Species rare, threatened, or 1 = Rare, but found in sufficient endangered in California and numbers and distributed widely elsewhere. These species are enough that the potential for eligible for state listing. extinction is low at this time. 2 = Species rare, threatened, or 2 = Occurrence confined to several endangered in California but populations or to one extended which are more common elsewhere, population. These species are eligible for state listing. 3 = Occurrence limited to one or a few highly restricted populations, 3 = Species for which more infor- or present in such small numbers mation is needed. Distribution, that it is seldom reported. endangerment, and/or taxonomic information is needed. E (Endangerment) 4 = A watch list of species of limited 1 = Not endangered distribution. These species need 2 = Endangered in a portion of its range to be monitored for changes in the 3 = Endangered throughout its range status of their populations. D (Distribution) 1 = More or less widespread outside California 2 = Rare outside California 3 = Endemic to California TABLE 4 SENSITIVE WILDLIFE SPECIES POTENTIALLY OCCURRING ON THE SITE Species Status Habitat Occurrence/Comments LISTED/PROPOSED SPECIES Invertebrates (Nomenclature from Brown, Real and Faulkner (1992) Quino checkerspot butterfly FE Open, dry areas in foothills, mesas, lake Adult emergence mid-January through April. Not Euphydryas editha quino margins. Larval host plant Plantago expected to occur. Small amount of Plantago erecta. erecta found within detention basin not sufficient to support quino. Amphibians (Nomenclature from Collins 1997) Arroyo toad FE, CSC, Bufo californicus HMP jçi (Nomenclature from American Ornithologists' Union) Open streamside sand/gravel flats. Quiet, Nocturnal except during breeding season (March— shallow pools along stream edges are July). Not expected to occur. Lack of suitable breeding habitat. habitat. Southwestern willow flycatcher SE, FE-1 FSS, Nesting restricted to willow thickets. Also Unlikely to occur due to lack of suitable habitat. Empidonax traillii extimus HMP occupies other woodlands. Rare spring Not observed during focused surveys. and fall migrant, rare summer resident. Extremely localized breeding. Coastal California gnatcatcher Fr, CSC, Coastal sage scrub, maritime succulent Observed off-site. Unlikely to breed on-site. Polioptila ca1fornica californica HMP scrub. Resident. Least Bell's vireo (nesting) SE, FE, HMP Willow riparian woodlands. Summer Unlikely to occur due to unsuitable habitat. Not Vireo bellii pusillus resident. observed during focused surveys. TABLE 4 SENSITIVE WILDLIFE SPECIES KNOWN POTENTIALLY OCCURRING ON THE SITE (continued) Species Status Habitat Occurrence/Comments OTHER SENSITIVE SPECIES Reptiles (Nomenclature from Collins 1997) San Diego homed lizard CSC, HMP, * Chaparral, coastal sage scrub with fine, Low potential to occur. Phrynosoma coronalum blainvillii loose soil. Partially dependent on harvester ants for forage. Belding's orangethroat whiptail CSC, HMP Chaparral, coastal sage scrub with coarse Moderate potential to occur. Cnemidophorus hyperythrus beldingi sandy soils and scattered brush. Silvery legless lizard CSC Herbaceous layers with loose soil in Potential to occur. Anniella pulchra pulchra coastal scrub, chaparral, and open riparian habitats. Prefers dunes and sandy washes near moist soil. Birds (Nomenclature from American Ornithologists' Union) White-tailed kite (nesting) Elanus leucurus Northern harrier (nesting) Circus cyaneus Sharp-shinned hawk (nesting) Accipiter striatus CFP, * Nest in riparian woodland, oaks, Unlikely to nest on-site. Insufficient nest sites. sycamores. Forage in open, grassy areas. Year-round resident. CSC, HMP Coastal lowland, marshes, grassland, Unlikely to nest due to small and fragmented agricultural fields. Migrant and winter nature of site. resident, rare summer resident. CSC Open deciduous woodlands, forests, Unlikely to nest on-site. edges, parks, residential areas. Migrant and winter visitor. TABLE 4 SENSITIVE WILDLIFE SPECIES KNOWN POTENTIALLY OCCURRING ON THE SITE (continued) Species Status Habitat Occurrence/Comments CSC, HMP Mature forest, open woodlands, wood Unlikely to nest due to lack of suitable nesting edges, river groves. Parks and residential areas. areas. Migrant and winter visitor. CSC Breeding restricted to riparian woodland. Unlikely to nest on-site. Spring and fall migrant, localized summer resident, rare winter visitor. CSC Dense riparian woodland. Localized Unlikely to nest on-site. summer resident. CSC, HMP Coastal sage scrub, grassland. Resident. Low potential to occur. CSC Chaparral, coastal sage scrub. Localized Unlikely to occur. resident. CSC - Open areas of scrub, grasslands, agricul- Moderate potential to occur. tural fields. CSC San Diego County west of mountains in Potential to occur. sparse, disturbed coastal sage scrub or grasslands with sandy soils. CSC Coastal sage scrub and chaparral. Potential to occur. HMP Many habitats. Unlikely to occur. Cooper's hawk (nesting) Accipiter cooperii Yellow warbler (nesting) Dendroica petechia brewsteri Yellow-breasted chat (nesting) Icteria virens Southern Californiarufous-crowned sparrow Aimophila ruficeps canescens Bell's sage sparrow Amphispiza belli belli Mammals (Nomenclature from Jones et al. 1982) San Diego black-tailed jackrabbit Lepus ca1fomicus bennettii Northwestern San Diego pocket mouse Chaetodipusfallaxfallax San Diego desert woodrat Neotoma lepida intermedia Southern mule deer Odocoileus hemionusfuliginata TABLE 4 SENSITIVE WILDLIFE SPECIES KNOWN POTENTIALLY OCCURRING ON THE SITE (continued) STATUS CODES Listed/Proposed FE = Listed as endangered by the federal government FT = Listed as threatened by the federal government SE = Listed as endangered by the state of California Other BEPA = Bald and Golden Eagle Protection Act CFP = California fully protected species CSC = California Department of Fish and Game species of special concern FSS = Federal (Bureau of Land Management and U.S. Forest Service) sensitive species HMP = Habitat Management Plan covered species list (City of Carlsbad 1999) * = Taxa listed with an asterisk fall into one or more of the following categories: Taxa considered endangered or rare under Section 15380(d) of CEQA guidelines Taxa that are biologically rare, very restricted in distribution, or declining throughout their range Population(s) in California that may be peripheral to the major portion of a taxon's range, but which are threatened with extirpation within California Taxa closely associated with a habitat that is declining in California at an alarming rate (e.g., wetlands, riparian, old growth forests, desert aquatic systems, native grasslands) as they move from suitable habitat found to the east and west of the road alignment. They have also been observed in the vicinity (RECON 1992). Yellow-breasted chat (Icteria virens). The yellow-breasted chat is a California species of special concern and an HMP covered species. This bird can be found throughout most of the continental United States. It is present in San Diego County during thespring and summer months. The chat breeds in dense brush or scrub, usually along streams or marshy areas with dense riparian woodlands. It feeds mainly on insects and berries. Rapid destruction of riparian woodlands by development and other human activities has caused population declines. It is possible that cowbird parasitism may also have contributed to the decline of the species. No yellow-breasted chats were observed during surveys. They have low potential to occur due to the disturbed nature of the southern willow scrub. Yellow warbler (Dendroica petechia brewsteri). The yellow warbler is a CDFG species of special concern. This migratory warbler is found during the summer breeding season throughout California, migrating to Central and South America for the winter, where it spends nine months out of the year. The yellow warbler is restricted to riparian woodland habitat for breeding (Unitt 1984). This species is declining due to the loss of riparian habitat and as a result of nest parasitism by brown-headed cowbirds. No yellow warblers were detected during spring surveys. This species likely migrates through the site during spring and fall migration but is unlikely to nest due to the disturbed nature of the southern willow scrub. Quino checkerspot butterfly (Euphydryas editha quino). The USFWS added the quino checkerspot butterfly to its list of endangered species in 1997. The quino's historic range includes the coastal plain and inland valleys of southern California from the Santa Monica mountains to northern Baja California. Currently, the species is known from areas in San Diego and Riverside Counties and Baja California. The quino checkerspot butterfly has recently been found in areas such as Otay Mesa and Jacumba in San Diego and near Murrieta and Temecula and eastward to Hemet and Anza in Riverside. This species was historically known from Lake Hodges and Rancho Santa Fe, which are the nearest historic locations to the project site (Mattoni et al. 1997). The distribution of quino checkerspots is primarily defined by the distribution of its larval host plant, dot-seed plantain, and other potential larval host plants such as Castilleja exserta, Collinsia sp., and other plants in the family Scrophulariaceae. Dot-seed plantain is found in coastal sage scrub, grassland, and chaparral and is usually most abundant in areas which have natural cryptogamic soil crusts. An additional characteristic of quino habitat is the presence of patches of bare or sparsely vegetated ground. 22 The flight period for the adult quino checkerspot butterfly usually ranges from late February to April, but can vary considerably from year to year depending on rainfall and temperature patterns. Adults are known to use a number of native annual species as nectar sources during the flight period. An assessment for suitable quino checkerspot habitat was conducted. A patch of the host plant, dot-seed plantain, was observed within the detention basin area (see Figure 3). This patch was approximately 36 square feet and contained approximately 1,000 individual plants. Two other patches of dot-seed plantain were observed off-site adjacent to the detention basin (see Figure 3). Each of these patches was approximately 400 square feet and contained approximately 40 to 50 plants per square foot. The quino checkerspot butterfly is not expected to occur on this site because of the disturbed and fragmented nature of the site and because the larval host plant population found is not sufficient to support this species. In addition, no historical populations of this species are known within 10 miles of the project location. Cooper's hawk (Accipiter cooperii). The Cooper's hawk is a medium-sized raptor which ranges throughout most of the United States. It is considered an uncommon resident during the breeding season in southern California, with numbers increasing in winter (Garrett and Dunn 1981). This hawk mainly breeds in oak and willow riparian woodlands but will also use eucalyptus trees (Unitt 1984). This hawk forages primarily on songbirds but is also known to eat small mammals. The decline of this species has been caused by urbanization and loss of habitat. The Cooper's hawk is a CDFG species of special concern and an HMP covered species. No Cooper's hawks were observed during surveys. However, they have a high potential to forage and roost within the southern willow scrub areas. They have a low potential to nest within the southern willow scrub; trees within this area lack sufficient height to support a nest and lack sufficient density to cover a nest from predators. White-tailed kite (Elanus leucurus). White-tailed kites range throughout the coastal areas of Oregon, California, and northern Baja California, Mexico, and are known from further south in Mexico and South America. This species primarily breeds in riparian areas lined with willow, cottonwoods, or sycamores but also uses savannas, marsh, and grassy foothills. They are commonly observed foraging over grassland, sparse shrubs, or agricultural fields. The white-tailed kite is a California fully protected species. No white-tailed kites were observed during surveys. Although this species is likely to forage on-site, white-tailed kites have a low potential to nest within the southern willow scrub; trees within this area lack sufficient height to support a nest and lack sufficient density to cover a nest from predators. 23 Sharp-shinned hawk (Accipiter striatus). Sharp-shinned hawks can be found throughout most of North America south to Central America. Their primary habitats are woodlands and mountainous coniferous and deciduous forests. Locally, the can be found foraging in woodland habitats associated with riparian areas, such as willow and sycamore woodlands. Although they have not been documented to nest in San Diego County, there is suitable habitat within the county (Unitt 1984). Sharp-shinned hawks winter in coastal southern California and nest in the region in montane forests. This species is a California species of special concern. No sharp-shinned hawks were observed during surveys. This species is unlikely to nest on-site because of the lack of suitable nesting habitat. Least Bell's vireo (Vireo bellii pusillus). Least Bell's vireo is a small, migratory songbird which breeds in southern California and winters in Baja California. This species breeds in dense riparian habitats with willows or sycamores forming a canopy and an understory comprised of mule fat, wild rose (Rosa calfornica), and other riparian species. This species is a state and federally listed endangered species and a HMP covered species. No least Bell's vireo were detected on-site during the 1999 focused surveys. Southwestern willow flycatcher (Empidonax traillii extimus). The southwestern willow flycatcher is federally and state listed as an endangered species. This species breeds in southern California, Arizona, New Mexico, southern Nevada, southern Utah, western Texas, northwestern Mexico, and possibly southwestern Colorado (Sogge 1997). Southwestern willow flycatchers are migrants, arriving on their breeding grounds in mid- May to early June (Garrett and Dunn 1981; Unitt 1984). The southwestern willow flycatcher requires riparian habitat with dense willow (Salix spp.) thickets (Grinnell and Miller 1944). Understory species include baccharis and arrowweed (Pluchea sericea). Southwestern willow flycatchers also nest in areas with tamarisk (Tamarix spp.) and Russian olive (Elea gnus angustfolia) in areas where these species have replaced the native willow. Surface water is commonly found at nesting sites (Sogge 1997). No southwestern willow flycatchers were observed during focused surveys. Arroyo toad (Bufo californicus). The arroyo toad is a federally listed endangered species, a California species of special concern, and an HMP covered species. This toad ranges coastally from San Luis Obispo County south into northwestern Baja California and is known from six drainages in the desert (Jennings and Hayes 1994). As more intensive surveys have been conducted recently, the arroyo toad is now known from 23 24 drainages in San Diego County (Brown 1995). However, many of the populations are small and isolated and may not be viable (USFWS 1994). The arroyo toad has very specific habitat requirements. It inhabits sandy banks of washes, streams, and arroyos with low currents and large, deciduous trees. Arroyo toads breed in pools with the majority of the pool greater than one foot deep with a substrate of sand, gravel, or pebbles. Arroyo toads are nocturnal and breed from March to June depending on local climate. Females lay between 2,000 and 10,000 eggs in strings in the breeding pools. Larvae metamorphose in 65 to 85 days. Adult toads estivate through the summer in burrows that they excavate on sandbars (Jennings and Hayes 1994). No directed surveys were conducted for arroyo toads. However, this species is unlikely to occur because the site lacks suitable stream habitat and because of the high level of disturbance on-site. 7.. Wildlife Movement Corridors Wildlife movement corridors are defined as areas that connect suitable wildlife habitat areas in a region otherwise fragmented by rugged terrain, changes in vegetation, or human disturbance. Natural features such as canyon drainages, ridgelines, or areas with vegetation cover provide corridors for wildlife travel. Wildlife movement corridors are important because they provide access to mates, food, and water; allow the dispersal of individuals away from areas of high population density; and facilitate the exchange of genetic traits between populations. Wildlife movement corridors are considered sensitive by the City of Carlsbad and resource and conservation agencies. The creek drainage on the north end of the project area has been identified by the City of Carlsbad as a wildlife movement corridor that links open space habitat from east to west along the creek (see Figure 3). A number of species are expected to use this area as a corridor. Vegetation types within the wildlife movement corridor are southern willow scrub, southern mixed chaparral, and coastal sage scrub. 8. Project Relationship to the Habitat Management Plan The draft HMP (City of Carlsbad 1999) is a comprehensive habitat planning program that addresses multiple-species habitat needs and the preservation of natural communities for northwestern San Diego County. The project site is partially included within the "core preserve" area of the HMP, and as such, project impacts are considered under HMP guidelines. Although the HMP is still a draft document, the objectives of the HMP should be considered when evaluating potential impacts. 25 The cities of Vista, San Marcos, Carlsbad, Encinitas, Solana Beach, and Escondido are participants in the HMP and Natural Community Conservation Plan but have not developed individual subarea plans. The City of Carlsbad is in the process of preparing a subarea plan in order to receive take authorizations for listed and unlisted species. The northern portion of the project site is identified as a wildlife movement corridor within City of Carlsbad's (1999) Habitat Management Plan core preserve area (Figure 4). Project Impacts Project plans include the construction of Melrose Drive, a 20-foot construction buffer, and a detention basin (see Figure 4). Anticipated biological impacts for this project were assessed according to guidelines set forth in the City of Carlsbad's Habitat Management Plan (1999) and CEQA. Mitigation would be required for impacts that are considered significant under these guidelines. No significant impacts to vegetation communities are anticipated from inundation within the detention basin because of the short amount of time the basin will be inundated during an average rainfall year. Vegetation in the lowest part of the detention basin is southern willow scrub and baccharis scrub, both of which can survive brief periods of inundation. It is estimated that during peak flows (100-year flood) the detention basin will be inundated for less than six hours and that during average rainfall years the maximum inundation times will be less than one hour. Inundation events are also not likely to occur every year. In addition, vegetation in the detention basin will not be removed. A. Plant Community Impacts The Melrose Drive alignment and 20-foot construction buffer will impact 0.33 acre of Diegan coastal sage scrub, 0.50 acre of baccharis-dominated scrub, 2.09 acres of southern mixed chaparral, 1.84 acres of agriculture, 0.49 acre of southern willow scrub, 3.79 acres of non-native grasslands, 3.25 acres of disturbed, and 0.01 acre of coastal and valley freshwater marsh. Impacts to plant communities are summarized in Table 5. Impacts to Diegan coastal sage scrub, baccharis scrub, southern mixed chaparral, southern willow scrub, and coastal and valley freshwater marsh would be considered significant. Impacts to non-native grasslands, disturbed areas, and agriculture would not be considered significant. W'S - 1104 00 MW c2 4* / TABLE 5 MELROSE DRIVE PLANT COMMUNITY IMPACTS (acres) Plant Community Impacted* Total within Project Areat Non-native grassland 3.79 3.79 Agriculture 1.84 1.84 Southern willow scrub 0.49 2.38 Diegan coastal sage scrub 0.33 0.85 Southern mixed chaparral 2.09 2.16 Disturbed 3.25 5.03 Coastal and valley freshwater marsh 0.01 0.38 Baccharis scrub 0.50 0.98 TOTAL 12.30 17.41 *Includes buffer area tlncludes habitats within detention basin. U! Non-Sensitive Wildlife Impacts Small mammals and reptiles with low mobility may be inadvertently killed during grad- ing of the site. Impacts on general wildlife species are considered less than significant. C. Sensitive Biological Resources Impacts Wetlands/Jurisdictional Waters Impacts to USACE jurisdictional wetlands, waters of the U.S., and CDFG jurisdictional wetlands will require a 404 permit from USACE, a 401 water quality certificate from the Regional Water Quality Control Board, and a Streambed Alteration Agreement from the CDFG. Sensitive Plants No impacts to sensitive plant species are anticipated from the proposed project. Sensitive Wildlife No on-site impacts to coastal California gnatcatcher, least Bell's vireo, or southwestern willow flycatcher are anticipated because these species were not detected, within the project footprint. No on-site impacts to any other state or federally listed endangered or threatened species are anticipated. If construction activities occur during the nesting season of the coastal California gnatcatcher, there may be a loss of an active nest to the pair located off-site due to excessive noise. These impacts would be considered significant. No impacts to raptor species are anticipated due to the lack of suitable nesting habitat. Sensitive Plant Communities Impacts to southern mixed chaparral, coastal and valley freshwater marsh, and southern willow scrub are considered significant. Impacts to coastal sage scrub and baccharis scrub are not considered significant because these habitat types are not occupied by the coastal California gnatcatcher (City of Carlsbad 1999). Wildlife Movement Corridors Impacts to the wildlife movement corridor, which is located along the northern portion of the project site, would be considered significant. lIMP Impacts Impacts to the wildlife movement corridor, which is within the HMP, are considered significant. No other impacts to the HMP are anticipated. Mitigation Measures and Recommendations Mitigation is required for project impacts that are considered significant, including impacts to listed species, sensitive plant communities, and wetlands. Mitigation is intended to reduce the impacts to a level of less than significant. Mitigation measures typically employed include avoidance, habitat restoration, and the payment of fees into a mitigation bank. Mitigation ratios for impacts to sensitive plant communities are summarized in Table 6. TABLE 6 MITIGATION RATIOS AND ACREAGE REQUIREMENTS FOR IMPACTS TO SENSITIVE PLANT COMMUNITIES Mitigation Acreage Plant Community Ratio Requirement Southern willow scrub 3:1 1.47 Coastal and valley freshwater marsh 2:1 0.02 Diegan coastal sage scrub 1:1 0.33 Baccharis scrub 1:1 0.50 Southern mixed chaparral 1:1 2.09 29 Riparian Plant Communities Impacts to southern willow scrub and coastal and valley freshwater marsh would be mitigated through the creation and enhancement of similar habitat. Southern willow scrub will need to be mitigated at a ratio of 3:1 for a total of 1.47 acres, and coastal and valley freshwater marsh will need to be mitigated at a ratio of 2:1 for a total of 0.02 acre. A riparian habitat revegetation plan will be prepared for the project. This plan will present the guidelines for site selection, site preparation, plant selection, installation, and maintenance and monitoring programs. Disturbed areas within the detention basin may provide suitable locations for riparian habitat creation and enhancement. Upland Communities Impacts to southern mixed chaparral, Diegan coastal sage scrub, and baccharis scrub will require mitigation at a ratio of 1:1 (City of Carlsbad 1999). Therefore, 2.09, 0.33, and 0.50 acres (2.92 acres total) will be required to mitigate impacts to southern mixed chaparral, Diegan coastal sage scrub, and baccharis scrub, respectively. The site of upland mitigation will be determined by the City of Carlsbad as part of the overall mitigation requirements for this project (Rideout, pers. com. 1999). Impacts to upland communities could be partially mitigated on-site along the manufactured slopes located near the northern portion of the road alignment. These slopes would be near the wildlife movement corridor and within the HMP preserve area. There are 2.27 acres of manufactured slopes that could be revegetated. The remaining 0.65 acre of upland impacts would need to be mitigated off-site. Wildlife Movement Corridors/HMP Impacts to the wildlife movement corridor and the HMP will be mitigated by the construction of a 10-foot-high wildlife undercrossing located near the northern portion of the project boundary and within the HMP designated wildlife movement area. Coastal California Gnatcatcher Mitigation for potential noise impacts to the coastal California gnatcatcher located off- site can be accomplished by having construction activities occur outside the gnatcatcher breeding season (September 1 to February 15) or by constructing a noise berm or wall to lessen noise levels. A biological monitor would need to be present if construction activities would occur during the gnatcatcher breeding season. 30 References Cited American Ornithologists' Union 1998 Check-list of North American Birds: The Species of Birds of North America from the Arctic through Panama, Including the West Indies and Hawaiian Islands. 7th ed. Committee on Classification and Nomenclature. Atwood, J. L. 1990 Status Review of the California Gnatcatcher (Polioptila californica). Unpub- lished technical report, Manomet Bird Observatory, Manomet, Massachusetts. Brown, C. 1995 Drainages with Extant Arroyo Toad Populations. Unpublished data. Brown, J. W., H. G. Real, and D. K. Faulkner 1992 Butterflies of Baja California. Lepidoptera Research Foundation, Inc., Beverly Hills, California. California, State of 1998a Special Plants List. Natural Diversity Data Base. Department of Fish and Game. April. 1998b Special Animal List. Natural Diversity Data Base. Department of Fish and Game. April. Carlsbad, City of 1999 Habitat Management Plan for Natural Communities in the City of Carlsbad. April. Collins, Joseph T. 1997 Standard Common and Current Scientific Names for North American Amphibians and Reptiles. 4th ed. Herpetological Circular No. 25. Society for the Study of Amphibians and Reptiles, Department of Zoology, Miami University, Oxford, Ohio. Garrett, Kimball, and Jon Dunn 1981 Birds of Southern California. Artisan Press, Los Angeles. Grinnell, J., and A. Miller 1944 The Distribution of the Birds of California. Pacific Coast Avifauna 26:608. 31 Hickman, James C. (editor) 1993 The Jepson Manual: Higher Plants of California. University of California Press, Berkeley and Los Angeles. Holland, Robert F. 1986 Preliminary Descriptions of the Terrestrial Natural Communities of California. Nongame-Heritage Program, California Department of Fish and Game. October. Jennings, Mark R., and Marc P. Hayes 1994 Amphibian and Reptile Species of Special Concern in California. Final report submitted to the California Department of Fish and Game, Inland Fisheries Division. Contract number 8023. Jones, J. K., D. C. Carter, H. H. Genoways, R. S. Hoffman, and D. W. Rice 1982 Revised Checklist of North American Mammals North of Mexico. Occasional Papers of the Museum, Texas Tech University 80:1-22. Mattoni, R., G. F. Pratt, T. R. Longcore, J. F. Emmel, and J. N. George 1997 The Endangered Quino Checkerspot Butterfly, Euphydryas editha quino (Lepi- doptera: Nymphalidae). Journal of Research on the Lepidoptera 34: 99-118, RECON 1992 Biological Technical Report for the Rancho Carrillo Master Plan Area and Adjacent Improvement Areas. RECON Number 2417B. Rideout, D. 1999 Personal communication with Markus Spiegelberg, RECON, April. City of Carlsbad Planning Department. Skinner, Mark, and Bruce Pavlik 1994 Inventory of Rare and Endangered Plants of California. California Native Plant Society Special Publication No. 1, 5th ed. Sacramento. Sogge, M. K. 1997 A Southwestern Willow Flycatcher Natural History Summary and Survey Protocol. National Park Service. Tate, James, Jr. 1986 The Blue List for 1986. American Birds 40(2):227-236. 32 Unitt, P. A. 1984 Birds of San Diego County. Memoir No. 13. San Diego Society of Natural History. U.S. Department of Agriculture 1973 Soil Survey, San Diego Area, California. Soil Conservation Service and Forest Service. Roy H. Bowman, ed. San Diego. December. U.S. Fish and Wildlife Service (USFWS) 1994 Endangered and Threatened Wildlife and Plants: Determination of Endangered Status for the Arroyo Southwestern Toad, Southern California and Northwestern Baja California, Mexico. Final Rule. 50 CFR 17, December 16. 1997 Survey protocol for the coastal California gnatcatcher. 1999 Survey protocol for the least Bell's vireo. 33 ATTACHMENTS ATTACHMENT 1 ATTACHMENT 1 PLANT SPECIES OBSERVED Scientific Name Common Name Habitat Origin Adenostomafasciculatum Hook. & Am. Chamise MC N Agrostis exarata Trin. Spike redtop SWS N Ambrosia psilostachya DC. Western ragweed SWS,D N Anagallis arvensis L. Scarlet pimpernel, poor-man's weatherglass CSS,D I Artemisia californica Less. California sagebrush CSS,MC N Artemisia douglasiana Mugwort SWS,FM N Arundo donax L. Giant reed SWS I Avena sp. Wild oats D,AG,CSS I Baccharis salicfolia (Ruiz Lopez & Pavón) Pers. Mule fat, seep-willow SWS N Baccharis sarothroides A. Gray Broom baccharis CSS,SWS N Brassica nigra (L.) Koch. Black mustard NNG,O,AG,CSS I Bromus diandrus Roth. Ripgut grass AG,D,NNG I Bromus hordaceus L. Smooth brome D,CSS I Bromus madritensis L. ssp. rubens (L.) Husnot Foxtail chess CSS,D,AG,NNG I Calystegia macrostegia ssp. tenufo1ia (Abrams) Brum Chaparral morning-glory CSS,MC N Centaurea melitensis L. Tocolote, star-thistle D,CSS,MC I Centaurium venustum (A. Gray) Rob. Canchalagua D,CSS N Chaenactis glabriuscula DC. Yellow pincushion CSS N Conium maculatum L. Poison hemlock SWS,D I Cordylanthus rigidus (Benth.) Jepson ssp. setigerus Chuang & Heckard Thread-leaved bird's-beak MC N Cortaderiajubata (Lemoine) Stapf Pampas grass D,SWS I Cotula australis (Sieber) Hook.f. Australian brass-buttons SWS I Cynodon dacy1on (L.) Pers. Bermuda grass SWS I Elymus glaucus Buckley Blue wildrye SWS N Eriogonumfasciculatum Benth. var.fasciculatum California buckwheat CSS,MC N Erodium sp. Filaree, storksbill D,CSS I Foeniculum vulgare Mill. Fennel SWS,D I Gnaphalium californicum DC. Green everlasting CSS,D N Hemizoniafasciculata (DC.) Torrey & A. Gray Golden tarplant D,CSS N Heteromeles arbutfo1ia (Lindley) Roemer Toyon, Christmas berry MC N Heterotheca grandflora Nutt. Telegraph weed CSS,D N Isocoma menziesii (Hook. & Am.) G. Nesom Coast goldenbush CSS N Lessingiafilaginifolia (Hook. & Am.) M.A. Lane var.filaginifolia California-aster CSS,D N Leymus condensatus (C. Presl) A. Love Giant ryegrass SWS N ATTACHMENT 1 PLANT SPECIES OBSERVED (continued) Scientific Name Common Name Habitat Origin Lolium perenne L. Perennial ryegrass AG,NNG,D I Lonicera subspicata Hook. & Am. var. denudata Rehd. Wild honeysuckle MC N Lotus scoparius (Nutt. in Torrey & A. Gray) Ottley var. scoparius California broom CSS N Lupinus bicolor Lindl. Miniature lupine CSS,MC N Malacothamnusfasciculatus (Torrey & A. Gray) E. Greene Chaparral mallow BS,D,CSS N Malosma laurina (Nutt.) Abrams Laurel sumac CSS,MC N Marah macrocarpus (E. Greene) E. Greene Wild cucumber CSS,MC N Melilotus alba Medikus White sweet clover SWS,D I Mimulus aurantiacus Curtis Bush monkeyflower CSS,MC N Mirabilis ca1fornica A. Gray Wishbone bush CSS,MC N Nassella pulchra (A. Hitchc.) Barkworth Purple needlegrass D,MC N Navarretia hamata E. Greene Hooked navarretia CSS N Nicotiana glauca Grah. Tree tobacco SWS,D I Opuntia littoralis (Engelm.) Cockerell. Shore cactus CSS N Osmadenia tenella Nutt. Osmadenia D,MC,CSS N Penn isetum setaceum Forsskal Fountain grass D I Pentagramma triangularis (Kaulf.) G. Yatskievych, M.D. Windham Goldenback fern CSS,MC N & E. Wollenweber ssp. triangularis Phacelia sp. Phacelia CSS N Picris echioides L. Bristly ox-tongue D I Plagiobothiys sp. Popcornflower CSS N Plantago erecta Morris Dot-seed plantain D N Platanus racemosa Nutt. Western sycamore SWS N Polypogon monspeliensis (L.) Desf. Annual beard grass SWS I Populusfremontii Wats. ssp.fremontii Fremont cottonwood, alamo SWS N Potentilla glandulosa Lindi. ssp. glandulosa Common potentilla MC N Quercus agrfo1ia Nee Coast live oak, Encina SWS N Quercus dumosa Nutt. Nuttall's scrub oak MC N Raphanus sativus L. Radish NNG,D,AG I Rhamnus crocea Nutt. Spiny redbemmy MC N Rhus integrifolia (Nutt.) Brewer & Watson Lemonadeberry MC,CSS N Rorippa nasturtium-a quaticum (L.) Hayek Water cress FM,SWS I Rumex crispus L. Curly dock FM,SWS I ATTACHMENT 1 PLANT SPECIES OBSERVED (continued) Scientific Name Common Name Habitat Origin Salix gooddingii C. Ball. Goodding's black willow SWS N Salix laevigata Bebb Red willow SWS N Salix lasiolepis Benth. Arroyo willow SWS N Salvia mel1fera E. Greene Black sage MC,CSS N Sambucus mexicana C. Presi Blue elderberry SWS N Scirpus californicus (C.A. Mey.) Steudel. California bulrush FM N Selaginella cinerascens Maxon Ashy spike-moss CSS N Sisyrinchium bellum Wats. Blue-eyed-grass CSS,NNG N Solahum xanti A. Gray Purple nightshade CSS,SWS N Stellaria media (L.) Villars Common chickweed CSS,D I Tamarix sp. Tamarisk SWS I Toxicodendron diversilobum (Torrey & A. Gray) E. Greene Western poison oak SWS,MC N Typha sp. Cattail FM N Verbena lasiostachys Link. Western vervain MC N Washingtonia robusta Wendi. Washington palm 1 Xanthium spinosum L. Spiny cocklebur SWS,D N Xylococcus bicolor Nutt. Mission manzanita MC N HABITATS AG = Agriculture BS = Baccharis scrub CSS = Coastal sage scrub D = Disturbed FM = Freshwater marsh MC = Southern mixed chaparral NNG = Non-native grassland 0 = Open places, waste places, roadsides, burns, etc. SWS = Southern willow scrub OTHER TERMS N = Native to locality I = Introduced species from outside locality ATTACHMENT 2 ATTACHMENT 2 WILDLIFE SPECIES OBSERVED/DETECTED ON THE SITE Evidence of Common Name Scientific Name Occupied Habitat Occurrence Invertebrates (Nomenclature from Brown, Real, and Faulkner 1992) Southern blue Glaucopsyche lygdamus australis CSS 0 California ringlet Coenonympha california california D,NNG 0 Reptiles (Nomenclature from Collins 1997) Side-blotched lizard Uta stansburiana D 0 Birds (Nomenclature from American Ornithologists' Union) Cinnamon teal Anas cyanoptera septentrionalium M 0 Red-shouldered hawk Buteo lineatus elegans F 0 Red-tailed hawk Buteojamaicensis F 0 California quail Callipepla calfornica calfornica MC 0 American coot Fulica americana americana M 0 Mourning dove Zenaida macroura marginella MC,D,SWS 0 Anna's hummingbird Calypte anna CSS,MC,SWS 0 Costa's hummingbird Archilochus costae CSS,MC 0 Nuttall's woodpecker Dendrocopos nuttallii SWS 0 Northern flicker Colaptes auratus SWS 0 Western wood pewee Contopus sordidulus SWS 0 Black phoebe Sayornis nigricans semiatra SWS 0 Say's phoebe Sayornis saya MC 0 Ash-throated flycatcher Myiarchus cinerascens cinerascens NNG 0 Cassin's kingbird Tyrannus vociferans voferans NNG 0 Warbling vireo Vireo gilvus swainsonii SWS 0 Western scrub-jay Aphelocoma californica MC 0 American crow Corvus brachyrhynchos hesperis F 0 Common raven Corvus corax clarionensis F 0 Bushtit Psaltriparus minimus minimus MC,SWS 0 Bewick' s wren Thy romanes bewickii MC 0 House wren Troglodytes aedon parkmanii SWS 0 Ruby-crowned kinglet Regulus calendula SWS 0 Wrentit Chamaeafasciata henshawi MC 0 Northern mockingbird Mimus polyglottos polyglottos MC 0 California thrasher Toxostoma redivivum redivivum MC 0 Orange-crowned warbler Vermivora celata SWS 0 Yellow-rumped warbler Dendroica coronata SWS 0 Common yellowthroat Geothlypis trichas SWS 0 Spotted towhee Pipilo maculatus MC 0 California towhee Pipilo crissalis MC,SWS 0 Black-headed grosbeak Pheucticus melanocephalus maculatus SWS 0 Blue grosbeak Passerina caerulea salicaria MC 0 Red-winged blackbird Agelaiusphoeniceus SWS,M 0 Western meadowlark Sturnella neglecta NNG 0 Brown-headed cowbird Molothrus ater SWS 0 Hooded oriole Icterus cucullatus nelsoni SWS 0 Bullock's oriole Icterus bullockii SWS 0 House finch Carpodacus mexicanusfrontalis SWS,MC 0 Lesser goldfinch Carduelispsaltria hesperophilus SWS,CSS,MC,NNG 0 ATTACHMENT 2 WILDLIFE SPECIES OBSERVED/DETECTED ON THE SITE (continued) Evidence of Common Name Scientific Name Occupied Habitat Occurrence Mammals (Nomenclature from Jones et al. 1982) Cottontail rabbit Sylvilagus audubonii SWS,MC,NNG 0 California ground squirrel Spermophilus beecheyi NNG,MC 0 Southern pocket gopher Thomomys umbrinus (= bottae) NNG B Woodrat Neotoma spp. MC N Habitats CSS = Coastal sage scrub, inland sage scrub D = Disturbed F = Flying overhead M = Mesic areas and wetlands MC = Southern mixed chaparral NNG = Non-native grassland SWS = Southern willow scrub Evidence of Occurrence 0 = Observed B = Burrow N =Nest