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Home My WebLink AboutCT 00-20; Fox Miller Property; Tentative Map (CT) (2)REVISED BIOLOGICAL TECHNICAL REPORT FOR THE FOX PROPERTY PROJECT CARLSBAD, CALIFORNIA Prepared for DEAN MILLER 1747 BRYN MAWR AVENUE SANTA MONICA, CA 90405 Prepared by WENDY E. LOEFFLER BIOLOGIST RECON NUMBER 3028B APRIL 5, 2001 1927 Fifth Avenue, Suite 200 San Diego, CA 92101-2358 619/ 308-9333 fax 308-9334 This document printed on recycled paper TABLE OF CONTENTS Summary of Findings 1 Introduction 2 Survey Methods 2 Existing Conditions 5 A. Topography and Soils 5 B. Botany 6 C. Zoology 11 D. Sensitive Biological Resources 13 E. Wetlands 22 Potential Impacts and Mitigation Measures 22 References Cited 23 FIGURES Regional Location of the Project 3 Project Vicinity 4 Existing Vegetation Communities and Sensitive Plant Species 8 Waters ofthe U.S. 24 Project Impacts 25 TABLES 1: Plant Communities on the Fox Property Site 7 2: Plant Species Observed on the Fox Property Site 9 3: Wildlife Species Observed/Detected on the Fox Property Site 12 4: Sensitive Plant Species Observed or with the Potential for Occurrence on the Fox Property Site 16 5: Sensitivity Codes 17 6: Sensitive Wildlife Species Known (or Potentially Occurring) on the Fox Property Site 18 7: Impacts to Biological Resources 27 8: Mitigation for Impacts to Resources on the Fox Property Site 29 ATTACHMENT 1: Wetland data forms Summary of Findings The proposed project includes the grading of four lots and an extension of Salk Avenue on the 52.33-acre Fox Property in the city of Carlsbad. The project is located north of Palomar Airport Road, east of El Camino Real, and between Faraday Avenue and College Boulevard. The project will impact 36.00 acres within the project boundaries, including 2.60 acres of Diegan coastal sage scrub, 0.19 acre of valley needlegrass grassland, 31.32 acres of non- native grassland, and 1.89 acres of developed area. Impacts to Diegan coastal sage scrub and valley needlegrass grassland, both considered sensitive habitats, will require mitigation. In addition, the Habitat Management Plan prepared by the City of Carlsbad requires mitigation for impacts to non-native grassland. Several sensitive species are present on-site: thread-leaved brodiaea (Brodiaea filifolia), a Califomia endangered and federal threatened species; Califomia adolphia (Adolphia californica), a Califomia Native Plant Society (CNPS) List 2 plant; coastal Califomia gnatcatcher (Polioptila californica californica), a federally threatened species; white- tailed kite (Elanus leucurus); northem harrier (Circus cyaneus); and Cooper's hawk (Accipiter cooperii). Impacts to the sensitive plants, coastal Califomia gnatcatchers, or the nests of breeding raptors, if present, will require mitigation. The proposed project will innpact 0.19 acre of non-wetland jurisdictional waters and 0.03 acre of jurisdictional wetlands which will require mitigation. The linear distance of these features is approximately 2,50Q feet. Mitigation measures include on-site restoration of disturbed habitat, revegetation of impacted habitat, transplantation of sensitive plants, and creation of wetland habitat, which will reduce impacts to less than significant. Impacts to wetlands also require a Streambed Alteration Agreement from the Califomia Department of Fish and Game (CDFG), an individual 404 permit from U.S. Army Corps of Engineers (USACE), and a 401 certificate from the Regional Water Quality Control Board (RWQCB). The impact analysis and recommended mitigation ratios in this document are based on both the City of Carlsbad's Habitat Management Plan (HMP) and the Califomia Environmental Quality Act (CEQA). The HMP is currently in the process of being approved by regulatory agencies and adopted by the City. If this document is not approved as currently published or is not adopted by the City, the required mitigation recommended based on CEQA will be applicable. In addition, if the HMP is not approved, a Memorandum of Understanding pursuant to Section 2081 of the Califomia Fish and Game Code will need to be obtained from the Califomia Department of Fish and Game and a Section 10(a)(1)(A) pemiit would be required by the U.S. Fish and Wildhfe Service for impacts to the state and federally listed thread-leaved brodiaea and federally listed coastal Califomia gnatcatcher. Introduction The 52.33-acre Fox Property site is in the city of Carlsbad, Califomia (Figure 1), located north of Palomar Airport Road, east of El Camino Real, and between Faraday Avenue and College Boulevard (Figure 2). The project site includes a portion of Letterbox Canyon with its associated drainages and the adjacent upland slopes. The site is bounded by El Camino Real to the east and north, agricultural fields to the north across El Camino Real, and industrial development surrounding the remainder of the site. The site was surveyed to map vegetation communities and to assess the presence or potential for presence of sensitive floral and faunal species. Focused surveys were also conducted for the coastal Califomia gnatcatcher (Polioptila californica californica) according to U.S. Fish and Wildlife Service (USFWS) protocol. This report provides biological data and background information required for environmental analysis by the Califomia Environmental Quality Act (CEQA). In addition, impacts were analyzed using information provided in the City of Carlsbad's Habitat Management Plan (HMP). This document is currently in the process of being approved by regulatory agencies and adopted by the City. An altemative impact analysis and altemative mitigation recommendations are also provided in case the HMP is not approved. In addition, if the HMP is not approved, a Memorandum of Understanding pursuant to Section 2081 of the Califomia Fish and Game Code will need to be obtained from the Califomia Department of Fish and Game and a Section 10(a)(1)(A) permit would be required by the U.S. Fish and Wildlife Service for impacts to the state and federally listed thread-leaved brodiaea. Survey Methods A biological resources survey was carried out on June 1, 1998, with follow-up visits on June 2 and June 5, 1998 by RECON biologist Wendy Loeffler. Vegetation communities were assessed and mapped. Animal species observed directly or detected from calls, tracks, scat, nests, or other sign were noted. All plant species observed on-site were also noted, and plants that could not be identified in the field were identified later using taxonomic keys. The wildlife surveys included focused surveys for coastal Califomia gnatcatchers. These surveys were conducted by RECON biologist Wendy Loeffler (permit number TE- 839084-2) according to the USFWS CaUfomia gnatcatcher survey guidelines (USFWS 1997). Surveys were conducted on July 10, 17, and 24, 1998 between the hours of 6:00 / * 57i V BLVD. r Go. I PROJECT LOCATION AGUA HEDIONDA LAGOON AIRPORT RD. 'LAKE SAN MARO BATIQUrrOS LAGOON LEUCADIA 1 0 iV.NCIN/rA ENCINITAS^ to L93 4 2 M/LES 0 HGURE 1 Regional Location of the Project 11 Map Source: U.S.G.S 7.5 minute topographic maps, San Luis Rey and Encinitas quadrangle 4000 2000 FEET 0 0 HGURE 2 Project Vicinity and 11:00 A.M. Survey conditions were optimal for detecting Califomia gnatcatchers, with mild temperatures and winds of 0 to 5 miles per hour. Focused surveys for coastal Califomia gnatcatcher were conducted in 2000/2001 by RECON biologist Jennifer Hodge (permit TE-797665-5) according to the USFWS Califomia gnatcatcher survey guidelines (USFWS 1997). Surveys were conducted on December 29, 2000 and January 5 and 16, 2001 between the hours of 9:00 and 10:30 A.M. Survey conditions were optimal for detecting coastal Califomia gnatcatchers, with mild temperatures and winds of 0 to 7 miles per hour. A botanical survey was conducted in 1998 to search for sensitive plants. The entire site was traversed by meandering transects in an effort to identify the locations of any sensitive species present on-site. A wetland delineation was performed on July 23, 1998 by RECON biologists Carrie Smith and Jennifer Hodge according to the guidelines set forth by the U.S. Army Corps of Engineers (USACE 1987). A wetland delineation is used to identify and map the extent of the "waters of the U.S." found within the proposed project boundary and provide information regarding jurisdictional issues for both state and federal agencies. Limitations to the compilation of a comprehensive floral checklist were imposed by seasonal factors, such as blooming period and emergence of some annual species. In addition, noctumal animals were not observed directly as all surveys were performed during the day. Floral nomenclature follows Hickman (1993) for common plants and Skinner and Pavlik (1994) for sensitive species. Plant community classifications follow the Califomia Natural Diversity Data Base (NDDB) (Holland 1986). Zoological nomenclature for birds is in accordance with the American Omithologists' Union Checklist (1983 and supplements); 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 Skinner and Pavlik (1994), State of California (1997a, 1998a, 1998b), U.S. Fish and WildUfe Service (USFWS 1995), and HoUand (1986). Existing Conditions A. Topography and Soils Elevation of the site ranges from approximately 160 to 300 feet above mean sea level (U.S. Geological Survey 1968). Letterbox Canyon rans east-west through the center of the site. Two side canyons, each supporting a drainage, run north-south and join Letterbox Canyon in the westem half of the property. Soils on the site consist of Altamont clay of 15 to 30 percent slope for the entire property. Altamont clay is derived from weathered calcareous shale and tends to be a well-drained soil (U.S. Department of Agriculture 1973). B. Botany Three vegetation communities are present on the 52.33-acre survey area: Diegan coastal sage scrab, valley needlegrass grassland, and non-native grassland (Table 1). The remainder of the site is developed. Figure 3 illustrates the locations of the plant communities on-site plotted on an approximately 1200-scale base map. A total of 44 plant species were identified on the site (Table 2). Of this total, 27 (61 percent) are species native to southem Califomia and 17 (39 percent) are introduced species. 1. Diegan Coastal Sage Scrub Approximately 5.56 acres of Diegan coastal sage scrab are present along the slope on the eastem edge of the study area. The community is dominated by black sage (Salvia mellifera) and common encelia (Encelia californica). Other species present include Califomia sagebrash (Artemisia californica), Califomia buckwheat (Eriogonum fasiculatum var. fasciculatum), Califomia adolphia (Adolphia californica), coast goldenbush (Isocoma menziesii), blue elderberry (Sambucus mexicana), and coyote bush (Baccharis pilularis). 2. Valley Needlegrass Grassland Valley needlegrass grasslands are comprised of native perennial bunch grasses. This plant community has been mainly converted to non-native annual grasslands due to the invasion of exotic annual grasses. Valley needlegrass grasslands often have a large component of non-native grasses but are distinguished as native grasslands when the cover by native grass species is 10 percent or greater. Four patches of valley needlegrass grassland are present on 0.26 acre scattered throughout the property within the non-native grassland on-site. The native species include purple needlegrass (Nassella pulchra) and foothill needlegrass (Nassella lepida) and comprise approximately 10 percent of the habitat. Non-native grasses, such as wild oats (Avena sp.) and Italian ryegrass (Lolium multiflorum), are the dominant species within this plant community. TABLE 1 PLANT COMMUNITIES ON THE FOX PROPERTY SITE Plant Community Acre(s) Diegan coastal sage scrab 5.56 Valley needlegrass grassland 0.26 , ^ Non-native grassland 33.95 <^ , | (j, ^'^^i/tf ^ Non-native grassland with thread-leaved brodiaea 10.67 "^^ fj Developed 1.89-^ TOTAL 5233 CD Vegetation Communities Sensitive species I Diegan coastal sage scrub G Coastal California gnatcatcher I I Non-native grassland • Valley needlegrass grassland i I Project boundary ^ Non-native grassland with thread-leaved brodiea I Developed HGURE 3 Existing Vegetation and Sensitive Species REC0N M:\jobs\3()28b\biolec.aprMig3 - final 03/26/01 TABLE 2 PLANT SPECIES OBSERVED ON THE FOX PROPERTY SITE Scientific Name Coiranon Name Habitat Origin Adolphia californica Wats. CaUfomia adolphia, spineshrub CSS N Anagallis arvensis L. Scarlet pimpemel, poor-man's weatherglass NNG I Artemisia californica Less. Califomia sagebrush NNG.CSS N Atriplex lentiformis (Torrey) S. Watson ssp. leiitifonnis Big saltbush NNG N Avena sp. Wild oats NNG,NG,CSS N Baccharis pilularis DC. Coyote bush CSS N Brassica sp. Mustard NNG.CSS I Brodiaea filifolia Wats. Thread-leaved brodiaea NNG N Calystegia macrostegia Morning-glory NNG.CSS N Centaurea melitensis L. Tocolote, star-thistle NNG.CSS I Chenopodium rubrum L. Alkali goosefoot NNG I Chrysanthemum coronarium L. Garland, crown daisy NNG I Cucurbita foetidissima Kunth Calabazilla NNG N Cynara cardunculus L. Cardoon NNG I Datura wrightii Regel Jimson weed NNG N Encelia californica Nutt. Common encelia CSS N Eriogonum fasciculatum Benth. var. fasciculatum CaUfomia buckwheat CSS N Erodium sp. Filaree, storksbill NNG.CSS I Foeniculum vuigare Mill. Fennel NNG I Grindelia camporum E. Greene var. bracteosum (J. Howell) M.A. Lane Gumplant NNG.CSS N Hazardia squarrosa (Hook. & Am.) E. Greene Sawtoothed goldenbush NNG N Helianthus annuus L. Common sunflower NNG N Isocoma menziesii (Hook. & Am.) G. Nesom Coast goldenbush NNG N Lactuca serriola L. Prickly lettuce NNG I Lolium multiflorum Lam. Italian ryegrass NNG,NG,CSS I Malosma laurina (Nutt.) Abrams Laurel sumac NNG.CSS N Marah macrocarpus (E. Greene) E. Greene Wild cucumber CSS N Mirabiiis californica A. Gray Wishbone bush CSS N Nassella lepida (A. Hitchc.) Barkworth Foothill needlegrass NG,NNG,CSS N Nassella pulchra (A. Hitchc.) Barkworth Purple needlegrass NG,NNG,CSS N Opuntia littoralis (Engelm.) Cockerell. Shore cactus NNG,CSS N Opuntia prolifera Engelm. Cholla CSS N Phalaris canariensis L. Canary grass NNG I Picris echioides L. Bristly ox-tongue NNG.CSS I TABLE 2 PLANT SPECIES OBSERVED ON THE FOX PROPERTY SITE (continued) Scientific Name Common Name Habitat Origin Polypogon monspeliensis (L.) Desf. Annual beard grass NNG I Rhus integrifolia (Nutt.) Brewer & Watson Lemonadeberry CSS N Ricinus communis L. Castor bean CSS I Salvia mellifera E. Greene Black sage CSS N Sambucus mexicana C. Presl Blue elderberry CSS N Schinus molle L. Peravian pepper tree NNG.CSS I Sisyrinchium bellum Wats. Blue-eyed-grass NNG N Tamarix sp. Tamarisk CSS I Tragopogon porrifolius L. Salsify, oyster plant NNG I Yucca schidigera K.E. Ortgies Mohave yucca CSS N Yucca whipplei Torrey Our Lord's candle CSS N HABITATS OTHER TERMS CSS = Diegan coastal sage scmb NG = Valley needlegrass grassland NNG = Non-native grassland N = Native to locality I = Introduced species from outside locality 3. Non-Native Grassland The majority of the site is covered with non-native grassland. This habitat altemates between areas dominated by species such as wild oat, sweet fennel (Foeniculum vuigare), and Italian ryegrass, and areas that consist almost solely of mustard (Brassica sp.). This habitat also supports a population of thread-leaved brodiaea (Brodiaea filifolia), a state- listed endangered plant. Approximately 44.62 acres of non-native grassland are present within the surveyed area. Thread-leaved brodiaea was identified on 10.67 acres of the non-native grassland and not observed on 33.95 acres. 4 Developed Approximately 1.89 acres of developed area is located on the southeast comer of the site and consists of a graded lot used by an equipment rental company. The area is primarily devoid of all vegetation. C. Zoology The site overall is of moderate value for wildlife species. A diversity of bird species, including foraging raptors, were observed during all site visits. A complete list of the wildlife species detected is provided in Table 3. Sensitive species occurring or potentially occurring on-site are discussed in the Sensitive Biological Resources section. 1. Amphibians Most amphibians require moisture for at least a portion of their life cycle, with many requiring a permanent water source for habitat and reproduction. Terrestrial amphibians have adapted to more arid conditions and are not completely dependent on a perennial or standing source of water. These species avoid desiccation by burrowing beneath the soil or leaf litter during the day and during the dry season. No amphibians were observed on-site. The drainages contain standing water intermittently throughout the length; however, there was no permanent source of flowing or standing water that would support completely aquatic amphibian species. Species expected to commonly occur on-site include Pacific treefrog (Hyla regilla). 2. Reptiles The diversity and abundance of reptile species varies with habitat type. Many reptiles are restricted to certain vegetation communities and soil types although some of these species will also forage in adjacent communities. Other species are more ubiquitous using a variety of vegetation types for foraging and shelter. 11 TABLE 3 WILDLIFE SPECIES OBSERVED/DETECTED ON THE FOX PROPERTY SITE Evidence of Common Name Scientific Name Occupied Habitat Occurrence Birds (Nomenclature from American Ornithologists' Union) Turkey vulture Cathartes aura F o White-tailed (= black-shouldered) kite Elanus leucurus F.NNG o Northem harrier Circus cyaneus hudsonius CSS o Cooper's hawk Accipiter cooperii F o Red-tailed hawk Buteo jamaicensis F o American kestrel Falco sparverius F O Mourning dove Zenaida macroura marginella CSS.NNG o Greater roadranner Geococcyx californianus NNG o Anna's hummingbird Calypte anna CSS o Cliff swallow Petrochelidon pyrrhonota tachina F,CSS,NNG o Westem scrub-jay Aphelocoma californica CSS,NNG o Bushdt Psaltriparus minimus minimus CSS.NNG o Northem mockingbird Mimus polyglottos polyglottos CSS.NNG o Wrentit Chamaea fasciata henshawi NNG o Coastal Califomia gnatcatcher Polioptila californica californica CSS o Lesser goldfinch Carduelis psaltria hesperophilus CSS o House finch Carpodacus mexicanus frontalis CSS O Common yellowthroat Geothlypis trichas CSS.NNG o Spotted towhee Pipilo maculatus CSS o CaUfomia towhee Pipilo crissalis CSS o American crow Corvus brachyrhynchos hesperis NNG o Song sparrow Melospiza melodia CSS.NNG o Habitats CSS F NNG Diegan coastal sage scrab Flying overhead Non-native grassland Evidence of Occurrence O Observed No reptiles were identified on-site. Reptiles typical of coastal sage scrab and non-native grassland are expected to occur on-site, including westem fence Uzard (Sceloporus occidentalis), side-blotched lizard (Uta stansburiana), and San Diego gopher snake (Pituophis catenifer annectens). Local reports indicate that westem rattlesnake (Crotalus viridis) is present on-site. 3. Birds The diversity of bird species varies with respect to the character, quaUty, and diversity of vegetation communities. Coastal sage scrab typically supports a higher diversity of bird species than non-native grassland. Non-native grassland provides foraging habitat for a variety of raptor species. Bird species observed on-site include mourning dove (Zenaida macroura marginella), westem scrab-jay (Aphelocoma californica), common yellowthroat (Geothlypis trichas), cliff swallow (Petrochelidon pyrrhonota tachina), bushtit (Psaltriparus minimus minimus), Califomia towhee (Pipilo crissalis), song sparrow (Melospiza melodia), northem mockingbird (Mimus polyglottos polyglottos), and American crow (Corvus brachyrhynchos). Raptors observed foraging on the site include white-tailed kite (Elanus leucurus). Cooper's hawk (Accipiter cooperi), northem harrier (Circus cyaneus hudsonius), red-tailed hawk (Buteo jamaicensis), turkey vulture (Cathartes aura), and American kestrel (Falco sparverius). 4. Mammals Coastal sage scrab and non-native grasslands typically provide cover and foraging opportunities for a variety of mammal species. Most mammal species are noctumal and are difficult to detect without conducting a trapping program. No mammals were identified on-site. Cottontail rabbit (Sylvilagus audubonii), deer mouse (Peromyscus maniculatus), striped skunk (Mephitis mephitis), and Califomia ground squirrel (Spermophilus beecheyi) are expected to use the site. D. Sensitive Biological Resources Local, state, and federal agencies regulate sensitive species and require an assessment of their presence or potential presence to be conducted on-site prior to the approval of any proposed development on a property. For purposes of this report, species will be considered sensitive if they are (1) listed or proposed for listing by state or federal agencies as threatened or endangered; (2) on List IB (considered endangered throughout its range) or List 2 (considered endangered in Califomia but more common elsewhere) of the Califomia Native Plant Society's Inventory of Rare and Endangered Vascular Plants of CaUfomia (Skinner and Pavlik 1994); (3) included on the City of Carlsbad draft HMP 13 or Multiple Habitat Conservation Program (MHCP) list of species evaluated for coverage or list of narrow endemic plant species; or (4) considered rare, endangered, or threatened by the NDDB (State of CaUfomia 1997a, 1997b, 1998a, 1998b) or other 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 HMP (City of Carlsbad 1999), NDDB (State of Califomia 1997b), Holland (1986), or considered sensitive by other resource agencies. The MHCP is a habitat conservation plan currently being drafted for the northem subregion of San Diego County (San Diego Association of Govemments [SANDAG] 1998) . The City of Carlsbad has drafted the Habitat Management Plan for Natural Communities in the City of Carlsbad, a subarea plan of the MHCP (City of Carlsbad 1999) . The HMP designates a natural habitat preserve system and provides a regulatory framework for determining impacts and designating mitigation associated with proposed projects. The MHCP draft document identifies a series of focused planning areas within which some lands will be dedicated for preservation of native habitats. These areas contain both "hard line" areas which will be preserved as open space and "soft line" areas which will include both development and open space to be detemiined through the planning process. Mitigation requirements for impacts to the biological resources are provided in the HMP (City of Carlsbad 1999). This document is currentiy in the process of being approved by regulatory agencies and adopted by the City. If this document is not approved as currently published or is not adopted by the City, all projects with proposed impacts will need to conform to CEQA requirements and will be required to obtain a Section 10(a)(1)(A) permit from USFWS for impacts to federally listed species. Assessments for the potential occurrence of sensitive or noteworthy species are based upon known ranges and habitat preferences for the species (State of CaUfomia 1990; Skinner and Pavlik 1994; Reiser 1994), species occurrence records from the NDDB (State of Califomia 1997b), and species occurrence records from other sites in the vicinity of the project site. 1. Sensitive Plants Two sensitive plants were observed on-site: thread-leaved brodiaea and Califomia adolphia. Thread-leaved brodiaea, a state endangered and a federal threatened species, is a perennial flower typically occurring on hillsides or valleys in grassland communities with clay, loamy sand, or alkaline silty-clay soils (USFWS 1994). It is present within the non- native grassland on-site covering an approximate area of 10.7 acres." 14 Califomia adolphia, a CNPS List 2 species, is a xeric shrab occurring in Diegan coastal sage scrab, often associated with Califomia buckwheat and Califomia sagebrash. It is generally found in habitats in which the shrabs have reached a height of four to five feet. This species is located within the large slope of coastal sage scrab in Letterbox Canyon and within one isolated patch above the southwestemmost side drainage. Several other species are known to occur in the vicinity of the project site and are considered as potentially occurring on-site based on vegetation communities identified. Table 4 summarizes the status, habitats, and results of the botanical survey for each of these potentially occurring species, with codes explained in Table 5. Many of these species, such as shrabs or cactus, would have been easily observed on the site during the sensitive plant survey. 2. Sensitive Wildlife The coastal CaUfomia gnatcatcher, a federally listed threatened species, was not observed during focused surveys conducted in July 1998. One pair was observed foraging throughout the coastal sage scrab in Letterbox Canyon during focused surveys conducted in December, 2000 and January, 2001 (see Figure 3). A pair of white-tailed kites, a Califomia fully protected species, was observed foraging over the non-native grassland on-site during all three Califomia gnatcatcher surveys. One kite was observed landing on a blue elderberry on-site and this species has been known to nest in trees five feet high (Ehrlich et al. 1988). Northem harrier and Cooper's hawk, both Califomia species of special concem, were observed flying from Letterbox Canyon. Red-tailed hawk and American kestrel were also observed flying over the project site. The raptors were actively foraging, with one bird observed carrying a rodent in its talons. Both the federal and Califomia govemments protect active raptor nests. There is a potential that raptors are nesting either on-site or in the larger trees on the adjacent property. Table 6 lists sensitive species observed on-site and those that could potentially occur on- site based on the ranges and habitat requirements of these species. The likelihood of these species occurring on-site is also presented in Table 6. 3. Sensitive Plant Communities and Habitats The following plant communities identified on-site are considered sensitive by the City of Carlsbad (1999), NDDB (State of Califomia 1997b), HoUand (1986), and state and federal resource agencies: Diegan coastal sage scrab and valley needlegrass grassland. 15 TABLE 4 SENSITIVE PLANT SPECIES OBSERVED (t) OR WITH THE POTENTIAL FOR OCCURRENCE ON THE FOX PROPERTY SITE Species State/Federal Stams CNPS List CNPS Code Typical Habitat/Comments Acanthomintha ilicifolia San Diego thommint CE/FT IB 2-3-2 Chaparral, coastal sage scrab, valley and foothill grassland/clay soils; not observed on-site Adolphia californica^ Cahfomia adolphia ../.. 2 1-2-1 Chaparral; observed on-site Artemisia palmeri San Diego sagewort ../.. 2 2-2-1 Coastal sage scrab, riparian scrab/sandy; not observed on-site Brodiaea filifolia^ Thread-leaved brodiaea CE/FT IB 3-3-3 Valley and foothill grassland, vemal pools; observed on-site Dichondra occidentalis Westem dichondra ../.. 4 1-2-1 Chaparral, cismontane wood- land, coastal sage scrab, valley and foothill grassland; not observed on-site Dudleya viscida Sticky-leaved liveforever ../„ IB 3-2-3 Coastal sage scrab; marginal habitat present, low potential to occur; not observed on-site Euphorbia misera CUff spurge ../.. 2 2-2-1 Coastal sage scrab/rocky; not observed on-site Ferocactus viridescens Coast barrel cactus ../.. 2 1-3-1 Chaparral, coastal sage scrab, valley and foothill grassland; not observed on-site Harpagonella palmeri var. palmeri Palmer's grappling hook ../.. 2 1-2-1 Chaparral, coastal sage scrab, valley and foothill grassland; not observed on-site Selaginella cinerascens Ashy spike-moss ../„ 4 1-2-1 Chaparral, coastal sage scrab; potential to occur Senecio aphanactis Rayless ragwort ../.. 2 3-2-1 Coastal sage scrab; potential to occur Viguiera laciniata San Diego County viguiera ../.. 4 1-2-1 Chaparral, coastal sage scrab; potential to occur NOTE: See Table 5 for explanation of sensitivity codes. TABLE 5 SENSITIVITY CODES FEDERAL CANDIDATES AND LISTED PLANTS FE = Federally Usted, endangered FT = Federally listed, threatened FPE = Federally proposed endangered FPT = Federally proposed threatened STATE LISTED PLANTS CE = State Usted, endangered CR = State Usted, rare CT = State listed, threatened CITY OF CARLSBAD STATUS HMP = Draft Habitat Management Plan for Natural Communities in the City of Carlsbad NE = Narrow endemic species in Draft HMP CALirORNL\ NATIVE PLANT SOCIETY LISTS lA = Species presumed extinct. IB = Species rare, threatened, or endangered in Califomia and elsewhere. These species are eligible for state listing. 2 = Species rare, threatened, or endangered in Califomia but which are more common elsewhere. These species are eligible for state listing. 3 = Species for which more infor- mation is needed. Distribution, endangerment, and/or taxonomic information is needed. 4 = A watch list of species of limited distribution. These species need to be monitored for changes in the status of their populations. R E D CODES R (Rarity) 1 = Rare, but found in sufficient numbers and distributed widely enough that the potential for extinction 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 Califomia 2 = Rare outside Califomia 3 = Endemic to Califomia TABLE 6 SENSITIVE WILDLIFE SPECIES KNOWN (OR POTENTLVLLY OCCURRING) ON THE FOX PROPERTY SITE Species Status Habitat Occurrence/Comments Reptiles (Nomenclature from ColUns 1997) San Diego homed lizard Phrynosoma coronatum blainvillii Belding's orangethroat whiptail Cnemidophorus hyperythrus beldingi Silvery legless lizard Anniella pulchra pulchra Coast patch-nosed snake Salvadora hexalepis virgultea Red diamond rattlesnake Crotalus exsul (= C. ruber ruber) CSCMHCP,* CSCMHCP, HMP CSC CSC CSC Birds (Nomenclature from American Ornithologists' Union) White-tailed (=black-shouldered) kite (nesting) CFP,* Elanus leucurus Chaparral, coastal sage scrab with fine, loose soil. Partially dependent on harvester ants for forage. Chaparral, coastal sage scrab with coarse sandy soils and scattered brash. Herbaceous layers with loose soil in coastal scrab, chaparral, and open riparian habitats. Prefers dunes and sandy washes near moist soil. Grasslands, chaparral, sagebrash, desert scrab. Found in sandy and rocky areas. Marginal habitat present; low potential to occur. No suitable soils; not expected to occur. No suitable soils; not expected to occur. Suitable habitat present; potential to occur. Desert scrab and riparian habitats, coastal Moderate habitat present; potential to occur, sage scrab, open chaparral, grassland, and agricultural fields. Nest in riparian woodland, oaks, sycamores. Forage in open, grassy areas. Year-round resident. One pair observed foraging; potential nesting in trees adjacent to site. TABLE 6 SENSITIVE WILDLIFE SPECIES KNOWN (OR POTENTIALLY OCCURRING) ON THE FOX PROPERTY SITE (continued) Species Status Habitat Occurrence/Comments Northem harrier (nesting) Circus cyaneus CSC,MHCP Coastal lowland, marshes, grassland, agricultural fields. Migrant and winter resident, rare summer resident. Observed on-site; potential to nest on-site. Cooper's hawk (nesting) Accipiter cooperii CSC.MHCP, Mature forest, open woodlands, wood HMP edges, river groves. Parks and residential areas. Migrant and winter visitor. Observed flying over. Ferraginous hawk (wintering) Buteo regalis CSC Require large foraging areas. Grasslands, agricultural fields. Unconmion winter resident. Foraging habitat present; potential to occur. Westem burrowing owl (burrow sites) Speotyto cunicularia hypugaea CSC.MHCP, Grassland, agricultural land, coastal HMP dunes. Require rodent burrows. Declining resident. Marginal habitat present; low potential to occur. San Diego cactus wren Campylorhynchus brunneicapillus couesi CSCMHCP,* Maritime succulent scrab, coastal sage scrab with Opuntia thickets. Rare localized resident. Marginal habitat present; not expected to occur. Coastal Califomia gnatcatcher Polioptila californica californica PT.CSC, Coastal sage scrab, maritime succulent MHCP.HMP scrab. Resident. Not observed during focused surveys in July 1998. Southem Califomia rafous-crowned sparrow Aimophila ruficeps canescens CSCMHCP, HMP Coastal sage scrab, grassland. Resident. Suitable habitat present; potential to occur on-site. Bell's sage sparrow Amphispiza belli belli CSC.MHCP Chaparral, coastal sage scrab. Localized resident. Suitable habitat present; potential to occur on-site. TABLE 6 SENSITIVE WILDLIFE SPECIES KNOWN (OR POTENTIALLY OCCURRING) ON THE FOX PROPERTY SITE (continued) Species Status Habitat Occurrence/Comments Mammals (Nomenclature from Jones et al. 1982) San Diego black-tailed jackrabbit Lepus californicus bennettii CSC.MHCP Open areas of scrab, grasslands, agricul- tural fields. Suitable habitat present; potential to occur on-site. Pacific little pocket mouse Perognatltus longimembris pacificus FE,CSC, Open coastal sage scrab; fine, alluvial MHCP sands near ocean. No suitable soils; not expected to occur on-site. Northwestem San Diego pocket mouse Chaetodipus fallax fallax CSC.MHCP San Diego County west of mountains in sparse, disturbed coastal sage scrab or grasslands with sandy soils. No suitable soils; not expected to occur on-site. STATUS CODES Listed/Proposed FE = Listed as endangered by the federal govemment FT = Listed as threatened by the federal govemment Other CFP = CSC = MHCP= HMP = Califomia fully protected species CaUfomia Department of Fish and Game species of special concem Multiple Habitat Conservation Program target species list Draft Habitat Management Plan for Natural Coimnunities in the City of Carlsbad 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 decUning throughout their range • Population(s) in Califomia that may be peripheral to the major portion of a taxon's range, but which are threatened with extirpation within Califomia • Taxa closely associated with a habitat that is declining in CaUfomia at an alarming rate (e.g., wetlands, riparian, old growth forests, desert aquatic systems, native grasslands) a. Diegan Coastal Sage Scrub Diegan coastal sage scrab is restricted to the coastal areas of southem Califomia and northem Baja Califomia. Development and other human-related activities have seriously impacted this plant community and its associated plant and wildlife species. Estimates of loss range from 36 percent (Klopatek et al. 1979) to 85 percent (Westman 1981). These losses have accelerated rapidly in the last decade (Sawyer and Keeler-Wolf 1995). Diegan coastal sage scrab habitat is considered to be sensitive by the federal and state resource agencies, most southem Califomia jurisdictions, and local conservation organizations. The majority of the habitat on-site is located on the south-facing slope and within the drainage of Letterbox Canyon and is quite mature, dense, and of high quality. The dominant species in this area include black sage and common encelia. This habitat continues along the eastemmost side drainage and is dominated by coyote bush. Three additional patches of coastal sage scrab are located just east, north, and south of the main population and are dominated by common encelia. Both the main canyon and the patch located to the south also contain Califomia adolphia, a CNPS List 2 species. b. Valley Needlegrass Grassland Valley needlegrass grasslands are considered sensitive because of the extensive loss of this community throughout the state. Valley needlegrass grasslands are listed as sensitive by the NDDB (State of Califomia 1997b) and it is estimated that only 0.1 percent of the native grasslands in Califomia remain (Keeley 1990). The loss of native grasslands is attributed to development, agriculture, grazing, and invasion by non-native, annual grasses and other non-native plant species. The invasion of native grasslands by non- native species including brome grasses (Bromus spp.), wild oats, and mustards has degraded native grasslands to the extent that it is rare to find any that have not been invaded by these species. Grasslands that have 10 percent cover by native grasses such as purple needlegrass are classified here as valley needlegrass grasslands as defined by resource agencies. Approximately 0.26 acre of valley needlegrass grasslands are present on-site in four isolated patches. 4. Wildlife Movement Corridors Wildlife movement corridors are defined as areas that connect suitable wildlife habitat areas in a region otherwise fragmented by ragged terrain, changes in vegetation, or human disturbance. Natural features such as canyon drainages, ridgeUnes, 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 high population density areas; and facilitate the exchange of genetic traits between populations (Beier and Loe 1992). Wildlife movement corridors are considered sensitive by resource and conservation agencies. 21 This site is bounded by industrial development and roadways on several sides. There are some open space areas contiguous with the property or across El Camino Real; however, these areas are limited in size and quality of habitat. This site does not constitute a viable or active wildlife movement corridor. E. Wetlands 1. U.S. Army Corps of Engineers The methodology for delineating wetlands used for this report follows guidelines set forth by the U.S. Army Corps of Engineers (1987) to identify areas on the site that are under the jurisdiction of USACE. Three criteria must be fulfilled in order to consider an area a jurisdictional wetland: (l)the presence of hydrophytic vegetation; (2) the presence of hydric soils; and (3) the presence of wetland hydrology. Atypical wetland areas (disturbed wetlands) and problem area wetlands (e.g., seasonal wetlands) may lack one or more of the three criteria but could still be considered wetlands if background information on the previous condition of the area and field observations indicate that the missing wetland criteria were present before the disturbance and would occur at the site under normal circumstances. Fox Property is bisected by the Letterbox Canyon drainage which conveys fiows in a westerly direction. This drainage is approximately 1,500 linear feet. Two parallel finger drainages located in the southem portion of the site convey flow in a northerly direction and discharge water into the Letterbox canyon drainage. Each drainage is approximately 600 linear feet. Water flow is largely due to precipitation and ranoff from adjacent roads and developed areas southwest of Fox Property. During periods of heavy ranoff water flows rapidly through the drainage due to the 120-foot elevation drop from the head of Letterbox Canyon to the detention basin. The two side drainages have similar hydrological characteristics in that flow is frequent but lengthy inundation is rare. Wetland data sheets are presented in Attachment 1. a. Jurisdictional Wetlands The wetland area at the end of Letterbox Canyon is confined to the recently constracted detention basin which floods frequently but holds water for relatively short periods of time. Earthmoving activities resulting from the re-contouring of the basin may have disrapted surface soils. Although the top 12 inches lack hydric soil indicators, soil characteristics below 12 inches are typical of wetlands and include sulfidic odor, organic streaking, and bluish-gray mottling. The majority of plant species here are considered facultative wetland species such as grass poly (Polypogon monspeliensis), tamarisk (Tamarix sp.), and bristly ox-tongue (Picris echioides). Wetland hydrology indicators such as water marks and oxidized root channels were also found. 22 The second wetland area found on-site had one inch of standing water during RECON's site visit. This localized natural ponding area occurs at the head of the westemmost side drainage. Soils exhibited a strong sulfidic odor and moderately sized low-chroma (grajdsh color) mottles typical of reducing conditions in wetland soils. Strong hydrology indicators such as sediment deposits and saturated soils also occurred here. Areas designated as wetlands were measured in the field and are depicted in Figure 4. Based upon the criteria outlined in the USACE guidelines (1987) the total area of jurisdictional wetland waters is approximately 0.03 acre (1,376 square feet). b. Non-Wetland Jurisdictional Waters Drainages that possess a distinct ordinary high water mark but lack one wetland indicator (e.g., soils or vegetation) are defined by USACE (1987) as non-wetland jurisdictional waters. The vegetation on-site within areas designated as non-wetland jurisdictional waters is mostly upland species such as lemonadeberry (Rhus integrifolia), black mustard (Brassica nigra), and coyote bush. Although the drainages lack wetland vegetation, there is strong evidence of seasonal fiows (i.e., cut banks and the presence of an ordinary high water mark). Therefore, these jurisdictional waters are delineated by the lateral extent of the ordinary high water mark of the particular drainage or depression. Based on USACE guideUnes approximately 0.21 acre (2,790 linear feet) of the drainages on-site is considered "non-wetland jurisdictional waters." These areas are also depicted in Figure 4. 2. California Department of Fish and Game CDFG regulates all private party activities that would alter a natural waterway that supports fish or wildlife under Fish and Game Code section 1603. CDFG requires that only one of the three criteria described above be present in order for the resource to fall under their jurisdiction. Based on their definition, the jurisdiction of CDFG overlaps completely with that of USACE for a total of 0.2f acre of streambed and 0.03 acre of adjacent wetland. Project Impacts The proposed project will include the grading of four lots located adjacent to El Camino Real and extending along the southern and westem borders. Impacts assessed also include the installation of sewer and storm drains and the creation of a detention basin within the westem end of Letterbox Canyon. The project will impact 36.00 acres of area within the project boundaries (Figure 5). The majority of Letterbox Canyon and approximately 80 percent of the thread-leaved brodiaea habitat will be preserved as open space. 23 Test pits Project boundary Wetland Non-wetland Jurisdictional waters CD 275 Feet 0 FIGURE 4 Waters ofthe U.S. M:\jobs\3028b\bio«ec.api\fig^ - final 08/22AX) REC0N CD Vegetation Communities I Diegan coastal sage scrub ^ Non-native grassland I Valley needlegrass grassland ] Non-native grassland with thread-leaved brodiea I Developed Wetland I Non-wetland Jurisdictional waters Sensitive species G Coastal California gnatcatcher X / /\ Project impact Project boundary FIGURE 5 Project Impacts RECCDN M:\johs\.^()28IAbiolcc.apiMig5 - final 03/26/01 The biological impacts of the project were assessed according to guidelines set forth in the City of Carlsbad's HMP (City of Carlsbad 1999) and CEQA. Mitigation is required for impacts that are considered significant under the HMP and CEQA guideUnes. ji A. Plant Community Impacts ^ X^^'iX ^ The proposed project will impact approximately 36^>^cres^ the property. This will include impacts to 2.60" acres of Diegan coastalsage y^rab, 0.19 acre of valley needlegrass grassland, 31.32 acres of non-native grassland, and 1.89 acres of developed area (Table 7). Impacts to Diegan coastal sage scrab and valley needlegrass grassland would be considered adverse and significant. The City of Carlsbad (1999) also considers impacts to non-native grassland as significant because this community can be a significant resource for raptor foraging, may support sensitive plant species, and may serve as a habitat linkage. If the HMP is not approved as written, these impacts would not be considered significant. Impacts to developed areas would not be considered significant." B. Wildlife Impacts The majority of the general wildlife observed consisted of bird species with a high mobility; thus, there are few impacts to general wildlife associated with the project. Small mammals, amphibians, and reptiles with low mobility may be inadvertentiy killed during grading of the site. Impacts on general wildlife are considered less than significant. Indirect impacts associated with project implementation include an increase in night- Ughting and an increase in litter and pollutants into adjacent wildlife habitat. These impacts are not expected to reduce the wildlife populations of the area below self- sustaining levels and are thus considered less than significant. C. Sensitive Biological Resources Impacts 1. Sensitive Plant Impacts The proposed project wiU impact 2J7 acres of non-native grassland whicli_cfliitaiiis-> thread-leaved brodiaea. This represents approximately 20 percent of the total thread- leaved brodiaea habitat identified on-site. This impact would be considered adverse and significant. The proposed project will impact a small portion of Califomia adolphia that is present in Letterbox Canyon and will impact the small patch located on the slope above the westemmost side canyon, south of Letterbox Canyon. This impact would be considered adverse and significant. 26 TABLE 7 IMPACTS TO BIOLOGICAL RESOURCES Biological Resource Project Impacts (acres) Preserved as Open Space (acre) Vegetation Community Diegan coastal sage scrab Valley needlegrass grassland Non-native grassland (includes grassland with thread-leaved brodiaea) Developed 2.60 0.19'' 31.32^ 1.89 2.96 0.07 13.30 VEGETATION COMMUNITY TOTAL 36.00 16.33 Jurisdictional Waters Disturbed wetiand Non-wetiand jurisdictional waters 0.03' 0.19' 0.02 JURISDICTIONAL WATERS TOTAL 0.22 0.02 2. Sensitive Wildlife Impacts Impacts to the coastal Califomia gnatcatcher could occur during removal of the Diegan coastal sage scrab during the breeding season of Febraary 15 to August 31. These impacts would be considered significant. Active raptor nests are protected under Section 3503.5 of the Califomia Fish and Game Code. The destmction of an active nest would be a significant impact. 3. Sensitive Plant Communities Two sensitive plant communities will be impacted through implementation of this project: Diegan coastal sage scrab and valley needlegrass grassland. Approximately 2.60 acres of Diegan coastal sage scrab will be impacted by the proposed project. Impacts to coastal sage scrab are considered adverse and significant. Approximately 0.19 "^acre of valley needlegrass grassland will be impacted by the proposed project. Impacts to this native plant community are considered adverse and significant. D. Wetland Impacts The proposed project will impact approximately 0.22 acre (2,500 Unear feet) of USACE and CDFG jurisdictional waters, including 0.03^acre of wetland habitat and 0.19 acre of non-wetiand jurisdictional waters of the U.S (see Table 7). Impacts to wetiands and non- wedand jurisdictional waters are considered adverse and significant. Mitigation Measures Mitigation is required for impacts that are considered significant, including impacts to listed species, sensitive plant communities and habitats, and wetiands. In addition, the City of Carlsbad (1999) requires mitigation for impacts to non-native grassland which can be a significant resource for raptor foraging, may support sensitive plant species, and may serve as a habitat linkage. Mitigation is intended to reduce significant impacts to a level of less than significant. Mitigation measures typically employed include resource avoidance, habitat replacement, or the paying of fees into a mitigation bank. A conceptual mitigation plan has been developed which provides greater detail for each of the mitigation measures described below (RECON 2000). Table 8 provides recommended mitigation ratios for both HMP and non-HMP scenarios. If the HMP is not approved as currently pubUshed or is not adopted by the City, a Memorandum of Understanding pursuant to Section 2081 of the Califomia Fish and Game Code will need to be obtained 28 TABLE 8 PROJECT IMPACTS AND PROPOSED MITIGATION Biological Resource Existing Acres Impacted Acres Preserved Acres Mitigation Ratio Required Mitigation Acreage Proposed Mitigation Under HMP Proposed Mitigation Under CEQA Diegan coastal sage scrub 5.56^ 2.60 2.96 2:1 Valley needlegrass 0.26 grassland Non-native grassland* 44.62 0.19 -0.07 3:1 31.32 -| _l3i2Ii' ) 0.5:1 Thread-leaved brodiaea ^ 10.67 2.17 8.50 100% conservation Disturbed wetland Non-wetland jurisdictional wetland 0.03 ^ 0.03^ 0.21 V _0A9_j^^ 2:1 1:1 5.20 On-Site: Preservation of 2.96 acre. Off-Site: Payment into mitigation bank for 2.24 acres. 0.57 On-Site: Conversion of 0.57 acre of non-native grassland to native grassland with thread-leaved brodiaea. 15.66 On-Site: Preservation^f^2?73) acres of non-native grassland; Off-Site: Payment of a mitiga- tion fee for impacts to the remaining 2.93 acres. t-.l 10.67 On-Site: 80% preservation of population (8.50 acres) in place; transplantation of 20% into open space on-site. Restoration will include the conversion of non^ _native.^assland^n-site to a native grassland community. 0.06 Creation and restoration of a 0.39-acre basin within Letterbox 0.19 Canyon to a native wetland habitat. On-Site: Preservation of 2.96 acres and conversion of 2.24 acres of non-native grassland to coastal sage scrub. On-Site: Conversion of 0.57 acre of non-native grassland to native grassland with thread-leaved brodiaea. Not a significant impact under CEQA. No mitigation required. On-Site: 80% preservation of population (8.50 acres) in place; transplantation of 20% into open space on-site. Restoration will include the conversion of non- native grassland on-site to a native grassland community. Creation and restoration of a 0.39 acre basin within Letterbox Canyon to a native wetland habitat. *The City of Carlsbad's HMP (1999) allows for payment of a per acre in lieu mitigation fee for impacts to non-native grassland that are not conserved or mitigated on-site in an amount to be determined by the City Council. fi-om the CaUfomia Department of Fish and Game and a Section 10(a)(1)(A) permit would be required by the U.S. Fish and Wildlife Service for impacts to the state and federally listed thread-leaved brodiaea and federally threatened coastal Califomia gnatcatcher. Regardless of the outcome of the HMP, the land proposed for dedication as open space will be set aside. -f A. Sensitive Plants The proposed project was designed to avoid impacts to 8.50 acres of the thread-leaved brodiapa, which represents 80 percent of the population on-site. Mitigation for impacts to 2.17 acres of thread-leaved brodiaea habitat will include the recovery of bulbs within the impacted non-native grassland habitat and transplantation of the bulbs to the grassland slopes within the open space. The non-native grassland in the open space will be converted to native grassland habitat by removing the non-native grass and herbaceous species and replanting the area with native grassland species. This will enhance the value of the thread-leaved brodiaea recovery. If the HMP is not approved or adopted, the impacts to the state and federally listed thread-leaved brodiaea will need to be approved by both the state and federal regulatory agencies. A Memorandum of Understanding pursuant to Section 2081 of the Califomia Fish and Game Code will need to be obtained fi-om the Califomia Department of Fish and Game and a Section 10(a)(1)(A) permit would be required by the U.S. Fish and Wildlife Service. B. Sensitive Wildlife Impacts to active coastal CaUfomia gnatcatcher nests can be avoided by removing the Diegan coastal sage scrab within the project area outside of the breeding season which is Febraary 15 to August 31. If vegetation must be removed dming the breeding season, a pre-constraction clearance survey should be conducted by a quedified biologist to ensure that no nests are located in, or within a 200-foot buffer around, the proposed footprint. In addition, a biologist should monitor all vegetation removal to ensure no direct impacts to individual birds. If a nest is discovered, work may need to be postponed until the young are independent from the nest. If the HMP is not approved, impacts to coastal sage scrab occupied by the coastal Califomia gnatcatcher will require either a federal Endangered Species Act Section 10(a)(1)(A) or Section 7 approval from the federal regulatory agencies. Impacts to active raptor nests can be avoided by removing all vegetation within the project area outside of the breeding season. The non-breeding season for raptors is September 1 through January 31. If vegetation cannot be removed and is to take place within the breeding season (Febraary 1 to August 31 for raptors), a survey for active nests 30 should be performed by a qualified biologist prior to any vegetation removal. If an active nest is identified, no constraction activity should be performed within 500 feet of the nest until the young are independent of their parents. A biologist should monitor any active nests during constraction to determine whether the activity is interfering with the nest and to determine when the young are independent of their parents. C. Sensitive Plant Communities Impacts to Diegan coastal sage scrab occupied by the coastal Califomia gnatcatcher will be mitigated at a ratio of 2:1. This ratio is consistent with HMP guidelines and CEQA. Impacts to 2.60'^cres of occupied Diegan coastal sage scrab will be mitigated by the preservation and/or restoration of 5.20 acres. This will include on-site preservation of 2.96 acres of habitat and either on-site restoration or acquisition of a 2.24-acre credit from an approved mitigation bank. Impacts to 0.19 acre of valley needlegrass grassland will be mitigated at a 3:1 ratio through the conversion of 0.57 acre of non-native grassland to native grassland habitat. Impacts to 31.32 acres of non-native grassland will be mitigated at a ratio of 0.5:1 for a total of 15.66 acres both on-site and off-site if the HMP is approved. On-site mitigation will consist of preservation of 12.73 acres of non-native grassland. The remaining 2.93 acres of impact will be mitigated by the payment of a per-acre mitigation fee in lieu of off-site mitigation in an amount to be determined by the City Council. If the HMP is not approved or adopted, the mitigation measures for non-native grassland impacts would not be required and 2.96 acres converted to coastal sage scrab for on-site restoration of impacts to that vegetation community. D. Jurisdictional Waters Impacts to 0.03 acre of wetland will be mitigated on-site at 2:1 and impacts to 0.19 acre of non-wetland jurisdictional water will be mitigated on-site at 1:1. A 0.39-acre basin will be created within a portion of Letterbox Canyon, remaining as open space and revegetated with willow scrab species. This basin will be supported by natural water and ranoff from the adjacent developed areas. This basin is not designed as a desiltation basin and each lot will include a catch basin to remove any debris and silt before it reaches the detention basin within the open space. Based on this design, regular maintenance will not be required within the basin and the created wetland will not be impacted. Prior to project implementation, permits for impacts to jurisdictional waters must be acquired from USACE, CDFG, and Regional Water Quality Control Board (RWQCB). An individual 404 permit will be required by USACE because the Unear length of impacts to drainages exceeds the 300-linear-foot limit allowed by Nationwide Pemiit #39. 31 This individual permit process will require the completion of a 404(b)(1) altematives analysis that provides an evaluation of three project altematives: no impact, reduced impact, and proposed project. CDFG will require the processing of a 1603 Streambed Alteration pemiit application prior to project implementation and RWQCB will require the processing of a 401 Water Quality Certification application. References Cited American Ornithologists' Union 1983 Check-list of North American Birds. 6th ed. Washington, D.C, with Supplements in 1985, 1987, 1989, 1991, 1993, and 1995. Beier, Paul, and Steven Loe 1992 A Checklist for Evaluating Impacts to Wildlife Movement Corridors. Wildlife Society Bulletin 20:434-440. Califomia, State of 1990 Califomia's Wildlife: Birds. Department of Fish and Game. November. 1997a State and Federal Lists of Endangered and Threatened Animals of Califomia. The Resources Agency, Department of Fish and Game. Revised April 1. 1997b Natural Diversity Data Base. Nongame-Heritage Program, Department of Fish and Game, Sacramento. 1998a Special Plants List. Natural Diversity Data Base. Department of Fish and Game. April. 1998b Special Animals. Natural Diversity Data Base. Department of Fish and Game. August. 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. Ehrlich, Paul R., David S. Dobkin, and Darryl Wheye 1988 The Birder's Handbook: A Field Guide to the Natural History of North American Birds. Simon and Schuster, New York. 32 Hickman, James C. (editor) 1993 The Jepson Manual: Higher Plants of Califomia. University of Califomia Press, Berkeley and Los Angeles. HoUand, Robert F. 1986 Preliminary Descriptions of the Tertestrial Natural Communities of Califomia. Nongame-Heritage Program, Califomia Department of Fish and Game. October. 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 ofthe Museum, Texas Tech University 80:1-22. Keeley. J. E. 1990 The Califomia Valley Grassland. In Endangered Plant Communities of Southem Califomia. Southem Califomia Botanists, Special Publication No. 3, edited by A. A. Schoenherr. Claremont, Califomia. Klopatek, J. M., R. M. Olson, C. J. Emerson, and J. L. Jones 1979 Land-use Conflicts with Natural Vegetation of the United States. Environmental Conservation 6:191-199. RECON 1999 Coastal Sage Scrab, Wetland, and Rare Plant Conceptual Mitigation Plan for the Fox Property. Prepared for Dean Miller. Reiser, C. H. 1994 Rare Plants of San Diego County. Aquafir Press, Imperial Beach, Califomia. San Diego Association of Govemments (SANDAG) 1998 The Multiple Habitat Conservation Program (MHCP) Consultants' Working Draft. June. Sawyer, J. O., and T. Keeler-Wolf 1995 A Manual of Califomia Vegetation. Califomia Native Plant Society, Sacramento. Skinner, M. W., and B. M. Pavlik 1994 Inventory of Rare and Endangered Plants of Califomia. Califomia Native Plant Society Special Publication No. 1, 5th edition. Sacramento. 33 U.S. Army Corps of Engineers (USACE) 1987 Corps of Engineers Wetlands Delineation Manual. Wetlands Research Program, Technical Report Y-87-1. Department of the Army, Washington, D.C. U. S. Department of Agriculture 1973 Soil Survey, San Diego Area, Califomia. Edited by Roy H. Bowman. Soil Conservation Service and Forest Service. December. U.S. Fish and Wildlife Service (USFWS) 1993 Proposed Rule to List the Southwestem Willow Flycatcher as Endangered with Critical Habitat. Federal Register 58(140). July 23. 50 CFR Part 17. 1994 Endangered and Threatened Species; Munz's onion, etc. (Four Southwestem CaUfomia Plants); Proposed Rule. Federal Register. December 15. 50 CFR Part 17. 1995 Endangered and Threatened Wildlife and Plants; Notice of Detemiination to Retain the Threatened Status for the Coastal Califomia Gnatcatcher Under the Endangered Species Act. March 27. 50 CFR 17. 1997 Coastal Califomia Gnatcatcher (Polioptila califomica califomica) Presence/Absence Survey Guidelines. U.S. Geological Survey 1968 San Luis Rey quadrangle 7.5-niinute topographic map. Photorevised 1975. Westman, W. E. 1981 Factors Infiuencing the Distribution of Species of Califomian Coastal Sage Scrab. Ecology 62:439-455. 34 ATTACHMENT 1 DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner KoU Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 | County: San Diego State: CA OoNomtal Circumstances exist on ttie site? El Yes • No Is the site significantly dIsturtMd (Atypical Situation)? gl Yes • No Is the area a potential Problem Area? • Yes E| No (If needed, explain on reverse or attach separate stieet.) Community ID: Disturbed Transect ID: Plot ID: 1 VEGETATION Dominant Plant Spades Stratum Indicator Dominant Plant Species stratum IrKlicator | 1. Tamarix sp. shnib FAC 9. 2. Polypogon monspeliensis heib FACW+ 10. 3. Picris echioides lieib FAC 11. 4. Baccharis pilularis slirub UPL 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are OB L, FACW, or FAC (excluding FAC-) 75% Remarks: 1. Assume presence of wetland vegetation? ^ Yes G No 2. Rooted emergent vegetation present? • Yes S No HYDROLOGY • Recorded Data (Describe in Remarics): Wetland Hydrology Indicators: • Stream, Lalce or Tide Gauge Primary Indicators: • Aerial Photographs • Inundated • Other • Saturated in: • Upper 12" • 13-18" • Water Maries El No Recorded Data Available • Drift Unes • Sediment Deposits • Drainage Pattems in Wetlands Field Observations: Secondary Indicators (2 or more required): Depth of Surface Water. n^ (m.) IS Oxidized Root Channels in: • Upper 12" Depth to Water in Pit n^O" ) H 13-18" Depth to Saturated Soil: TJ& (in.) • Water-Stained Leaves • Local Soil Sunrey Data • FAC-Neutral Test • Other (Explain In Remarics) Observations and Remarks: 1. Filamenloi^ or sheet forming algae pr^ent? • Ves ^ No 2. Slope: gj 0-2%; or 0>2% 3. Oxidized rhizospheres: ZJi new roots only; ^ old roots only; new and old roots, Dnone 4. Flooding: • nor>e, OoocSng not probat}le; • rare, unlikely tnit poss/Me under unusual weattier conditions; • occasional, occurs on an average of once or less in 2 years; or E] frequent, occurs on an average of more than once In 2 years. 5. Duration: ^ very brief, if <2 days; ^ brief, if 2-7 days, or O long, if >7 days 6. Site ponds water? OYes H Ato SOILS Map Unit Naine (Series and Phase): Altamont SoiesVCIay Fliase Taxonomy (Subgroup): ChromoxerBtts Drainage Class: well-dtained clays Penneability: Runoff: adajcent developed areas Field Obsenmfions: Confirm Mapped Type? • Yes Bl No Profile Description: Depth (inches) Horizon Matrix Color (Munseil Moist) Mottte Colors (Munseil Moist) MotUe Abundance/ Contrast Texture, Concretions, Structures, etc. 0-12" Top 12" 10YR4/3 none n/a Loamy sand 12-18" Bottom 10YR4/3 SB 4/1 common/ course Clay loam IHydric Soil Indicators: • Histosol • Histic Epipedon la SutfidicOdor • Aquic Moisture Regime • Reducing Conditions B Gleyed or Low-Chroma Colors • Concretions • High Orgarric Content in Surface Layer in Sandy Soils • Organic Streaidng in Sandy SoUs • Listed on Local Hydric Soils List • Usted on National Hydric Soils List • Other (Explain in Remar1(S) Oberservattons and Remarks: 1. Smell: •Meufta/; U Slis^tiy ftesh; or Q Freshty pknmd fieki smeK 2. Site: O Irrigated; C2 Ijmd leveled; O DUoti drained; f3 Pumped; Q Graded to dnun via skjpe 3. SoUs: Ddb O do n<^ become frequentiy ponded or saturated for kxig(>7 days) to very tong durations (>30 (toys) during tf»^x>wing season WETLAND DETERMINATION Hydrophytic Vegetation Present? g| Yes • No Wetiand Hydrology Present? El Yes • No Hydric Soils Present? ^ Yes B No Is this Sampling Point within a Wetiand? Yes • No 1. Possibly water of me U.S.? 13 Yes •/\to 2. PossU)ly Bxerr^ from Corps/EPA Regulation? • Ves DAfo (If yes, ctied< item(s) betow.) (a) O Non-tidat drainage and irrigation ditehes excavated on dry land (b) O ArtifkaHy Irrigated areas wt^ ¥mM revert to i^jland if the Irrigation ceased. (c) • Artitidal lakes or ponds created by excavating and/or cUdng (by land to collect and retain Mafar and whteh are used exdusively for such purposes as stodt watering, inigation, setUing basins, or rice growing. (d) • Artilteal reflecting or swimrUng pools or otiier smatt omamental bodies of water created tiy excavating and/or diking dry land to retain nmter for primarily aesthk: reasons. (e) • Waterfllled depresskxis created in dry larK/ inckiental to construction acti\rity arxi pits excavated in d^ purpose of obiaming fin, sand, or gravel urriess and until the construction or excavation operation is abandoned and tiie resiMng body of water meets the defirirtion of waters of Vie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: Clumps of black soil (organic streaking in tower areas -13-18*). Soils bekiw 12* exhibit hydrk: indicators, top 12* has weak indicators. Newly constructed detention t>asin either indroduced fill or soils were moved and have not tmi sufftoient time to devetop hydric conditions. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner: Koll Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 County: San Diego State: CA Do Normal Circumstances exist on the site? El Yes • No Is tfie site signiftoarrUy disturt>ed (Atyptoal Situation)? • Yes El No Is the araa a potential Problem Area? • Yes [S No (if needed, explain on reverse or attach separate sheet) Community ID: Disturbed Transect ID: Plot ID: 2 VEGETATION Dominant Plant Species Stratum Indtoator Dominant Plant Species stratum Indicator 1 1. Brassica nigra herb UPL 9. 1 2. Picm echioides herb FAC 10. 3. Baccharis pilularis sluiib UPL 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species t hat are OB L, FACW, or FAC (excluding FAC-) 33% | Remaii(s: 1. Assume presence of wetland vegetation? • Yes ^ No 2. Rooted emergent vegetation present? • Yes El No | HYDROLOGY El Recorded Data (Describe in Remarks): Wetland Hydrology Indtoators: • Stream, Lake or Tide Gauge Primary Indtoators: El Aerial Photographs • Inundated • Ottier • Saturated in: • Upper 12" • 13-18" • Water Marks • No Recorded Data Available El Drift Unes • Sediment Deposits • Drainage Pattems in Wetiands Reto ObsenraUons: Secondary Indtoators (2 or more required): Deptti of Surface Water n^ (in.) El Oxidized Root Channels in: • Upper 12" Depth to Water in Pit: fin.) BI 13-18" Deoth to Saturated Soil: fin.) • Water-Stained Leaves • Local Soil Sun/ey Data • FAC-Neutral Test • Ottier (Explain in Remarks) Observations and Remarics: Oxidized root ctiannels are few and small. Very thin light colored algae layer present on soil suiface. Slight drift lines, diffi cult to detect 1. Filamentous or stieet forming algae present? El V'es •/Vo 2. Slope: ^0-2%; or 0>2% 3. Oxkiized rhizosptieres: \3 new roots only; ^ old roots only; O naw and old roots, Qnone 4. Flooding: Q none, ftooding not protxtHe; • rare, imlikely tnit poss/Me under unusual weatiier conditions; • occasional, occurs on an average of once or less In 2 years; or (3 frequent, occurs on an average of more than once In 2 years. 5. Duration: JS very brief. If <2 days; O brief, If 2-7 days, or \3 kmg, if >7 days 6. Site ponds water? \3Yes El Wo SOILS Map Unit Name (Series and Pttase): Altomont Seties/Clay Phase Taxorwmy (Subgroup): Chromoxererts Drainage Class: well-drained clays Permeability: Runoff: Reki Observations: Confimi Mapped Type? El Yes Q No Profile Description: Deptti (inches) Horizon Matrix Cotor (Munseil Moist) Mottte Cotors (Munseil Moist) Mottte Abundance/ Contrast Texture, Concrattons, Stiwrtures, eto. 0-12" 10YR4/3 none Loamy sand 12-18" 10YR4/3 none Clay ktam Hydrte Soil Indtoators: • Histosol • Histic Epipedon • SulfkitoOdor • Aquto Moisture Regime n Reducing Conditions • Gleyed or Low-Chroma Cotors • Concretions • High Organto Content in Surface Layer in Sandy Soils • Organto Streaking in Sandy Soils • Listed on Local Hydrto Soils Ust • Listed on National Hydrto Soils Ust • Ottier (Explain In Remarits) Otefservaltons and Ramarte: 1. SmeM: nNeutial; ^SH^tiy fresh; or n Freshly plowed Held smell 2. Site: \Ji irrigated; tJ Land leveled; O Ditch drabied; • Purrved; El Gradladtod/a/n v<astope 3. Sots: Odo S do not become frB<fi/entiy ponded or saturated for tong (>7 days) to very tong durations (>30 days) dwing the fflowkig season WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes El No Wetiand Hydrotogy Present? El Yes • t«to Hydrto Soils Present? • Yes El No Remarks: 1. Possibly water ca tiie U.S.? ^Yes \2NO 2. Possibly exempt from Corps/EPA Regulation? • Ves El Ato (Ifyes, check item(s) betow.) (a) J^ Non-tideH drainage and irrigation rXtches eiK^avated on dry land (b) OArtitically Irrigated areas wtitoh wouki revert to upland if the inigation ceased. (c) • Artitidet lakes or ponds created by excavating and/or cKang dry land to collect and retain water and wHdi are used exdusively for sudi purposes as stock wataing, irrigation, settiing basins, or rice growing. (d) ^Artifkxilreltedirig or S¥iiirrirrtirtg pools or other srtieil ornamental txxtiescfvmt land to retain wat» tor primarily aesttUc reasons. (e) • WaterlUledd^Hesstons created m dry land inddentsd to coristructionxtivity and pits excavated m purpose of oljtairmg fill, sand, or gravel inUess arni imtil ttw cor^rucOon or excavsdton operation Is t^)aidoried arid ttie resMr^ body of water meets tiie detinition of waters of tiie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remailts: Very thin, light colored filamentous layer. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner. Koll Development Company investigator(s): C. Smith and J. Hodge Date: 7-23-98 | County: San Diego State: CA Do Normal Circumstances exist on the site? EI Yes • Ho Is ttie site significantiy disturtied (Aiyptoal Situation)? • Yes E! No Is the area a potential Problem Area? • Yes El No (if needed, explain on reverse or attach separate stieet) Community ID: Disturbed Transect ID: Plot ID: 3 and 4 VEGETATION Dominant Plant Species stratum Indicator Dominant Plant Species Stratum Incficator | 1. Brassica nigra heib VPL 9. 2. 10. 3. 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are OB L. FACW, or =^AC (excluding FAC-) o% Remarics: 1. Assume presence of wetland vegetation? Q Yes ^ No 2. Rooted emergent vegetation present? • Yes ^ No I HYDROLOGY El Recorded Data (Describe In Remarks): • Stream, Lake or Tide Gauge EI Aerial Ptiotograptis • Ottier • No Recorded Data Availat)le Reto Otisenrations: Depth of Surfece Water Depth to Water in Pit: Deptti to Saturated Soil: n/a (In.) .(in.) (in.) Wettand Hydrotogy Indtoators: Primary Indtoators: • Inundated • Saturated in: • Upper 12" • 13-18" • Water Marks • Drift Unes • Sediment Deposits • Drainage Patterns in Wettands Secondary Indtoators (2 or more required): • Oxkiized Root Channels in: • Upper 12" • 13-18" • Water-Stained Leaves • Local Soil Sunrey Data • FAC-Neutral Test • Ottier (Explain in Remarks) Obse/vatons and Remaria: 1. Filamentous or sheet forming algae present? • Ves ElNo 2. Stope: • 0-2%; or El>2% 3. Oxkiized rtiizospheres: • new roots only; • old roots onjy; • new and old roots, El none 4. Ftooding: • none, ftooding not prot)able; • rare, unlikely tnit poss/b/e under unusua/ weatiier conditions; El occastomH, occurs on an average of once or less in 2 years; or • frequent, occurs on an average of more tiian once in 2 years. 5. Dumtion: ^ very brief, if <2 days; \3 brief, if 2-7 days, or 13 long, if >7 days 6. Site ponds water? • Ves ^No SOILS Map Unit Name (Series and Ptiase): Altamrait SeriesVClay Phase Taxonomy (Sut)group): Chromoxerats Drainage Class: Well-drained clays Permeability: Runoff: FieM Observations: Confirm Mapped Type? El Yes • f4o Profile Description: Deptti (inches) Horizon Matrix Cotor (Munseil Moist) Mottie Cotors (Munseil Moist) Mottte Abundance/ Contrast Texhjre, Concretions, Structures, eto. 0-6" 10YR4/3 none Loam clay 6-18 10YR4/3 — Bedrodc Hydrte Soil Indtoators: • Histosol • Histic Epipedon • SutfldtoOdor D Aquto Moisture Regime • Reducing CoiKitions • Gleyed or Low-Chroma Cotors • Concretions • High Organto Content in Surface Layer in Sandy Soils • Organto Stresddng m Sandy Soils • Usted on Local Hydric Soils Ust • Listed on National Hydric Soils List • Ottier (Eiqilain in Reirauks) Obsrservattons and Remarks: 1. Sme//; QNeutial; ^ Slightiy fresh; or O FresNy ptowed fieto smell 2. Site: D Irrigated; Cl Land levded; O Ditdi drained; O Pumped; O Graded to drain iria stope 3. SoSs: Odo ^ do not become frer^ientiy ponded or saturated for tong (>7 days) to very tong durations (>30 days) during ttie ^owkig season WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes |S No Wetiand Hydrotogy Present? DYes El No Hydric Soils Present? • Yes El No Is ttiis Sampling Point within a Wettand? • Yes • No Remarks: Narrowly cot banks, drainage approximatley 23 it wide, water flows quiddy 1. Possibly water of tiie U.S.? El Ves DNO 2. Possibly exempt from Corps/EPA Regulatton? • Ves DA/b (Ifyes, diecktiem(s) betow.) (a) D Non-tidd drdnage and irrigation atches excavated on dry land (b) OArtitictily irrigated areas vt/ttich wodd revert to t^)land if the irrigation ceased. (c) • ArtHtoid lakes or ponds created by excavating and/or rtiUng dry land to coUect and retain water and whtoh are used exdusively for such purposes as stock watering, irrigation. setUing basms. or rtee growing. (d) • Aitiftod reflect or swimming pooiis or other stndl ornaments bodlfes of water created by excavating and/or <Mldng dry laid to retain water for primarily aesfhic reasons. (e) • Waterfilled depresstoris created in dry land incktentd to construction activity and pits excavated In dry 1^ purpose of draining fill, sand, or gravd unless and uniti tiie construction or excavation operation is abandoned and tiie resdting body oi water meets ttie detinition of waters of ttie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: Soils are damp but not saturated. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner: Koll Development Compsmy lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 County: San Diego State: CA Do Nonnal Circumstances exist on ttie site? B Yes • No Is ttie site signlficantty disturised (/Vtyptoal Situation)? • Yes EI No Is ttie area a potential Prot>lem Area? • Yes El No (if needed, explain on reverse or attach separate sheet.) Community ID: Disturbed Transect ID: Plot ID: 5 VEGETATION Dominant Plant Species StiBtum Indtoator Dominant Plant Species stratum Indicator 1. Brassica nigra betfo UPL 9. 2. 10. 3. 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are OB L, FACW, or FAC (excluding FAC-) o% Remarks: 1. Assume presence of wetland vegetation? • Yes ^ No 2. Rooted emergent vegetation present? • Yes El No HYDROLOGY El Recorded Data (Describe in Remarics): • Stream, Lake or Tkto Gauge B Aerial Photograpfis • Ottier n No Recorded Data Available Fieto Ot>servations: Depth of Surface Water Deptti to Water in Pit Depth to Saturated Soil: .(in.) -On.) .fin.) Wettand Hydrotogy Indicators: Primary Indtoators: n Inundated • Saturated in: • Upper 12" • 13-18" • Water Merits • Drift Unes • Sediment Deposits • Drainage Pattems in Wetiands Secondary Indtoators (2 or more required): • Oxidized Root Channels in: • Upper 12" • 13-18" • Water-Stained Leaves • l.ocal Soil Survey Data • FAC-Neutral Test • Ottier (Explain in Remaric) Ot>servations and Remarics: 1. Filamentous or sheet forming algae present? • Ves El'^ l2. Stope: •0-2%; or Bl>2% [3. Oxkiized rtiizospheres: D new roots only; Z2 old roots only; Z2 naw and dd roots, El none 14. Ftooding: • none, ftooding not probabto; El rare, unlikely but possible tmder unusual weather conditions; • occastonal, occurs on an average of once or less in 2 years; or • frequent, occurs on an average of more ttian once in 2 years. Duration: S very tmef, if <2 days; O brief, if 2-7 days, or \3 kmg, if >7 days 16. Site ponds water? • Ves El Aio SOILS Map Unit Name (Series and Phase): Altamont SeriesVClay Phase Taxonomy (Subgroup): Chromoxemts Drainage Class: Well^bained clays Penneat>ility: Runoff: Fiekl Observations: Confirm Mapped Type? El Yes • No Profito Description: Deptti Cmches) •Horizon Mattix Cotor (Munseil Moist) Mottie Cotors (Munseil Moist) Mottie Abundance/ Contrast Texture, CorKretions, Structures,^. 0-18" 10YR4/3 Clay loam Hydric Soil Indtoators: • Histosol • Histic Epipedon • SulfidtoOdor • Aquto Moisture Regime • Reducing Conditions • Gleyed or Low-Chroma Cotors • Concretions • High Organto Content in Surface Layer in Sandy Soils • Organto Sta^aking in Sandy Soils • Listed on Local Hydric Soils Ust • Ustad on National Hydric Soils Ust • Ottier (Explain in Remarics) Obarsarva/lions and Remarks: 1. Smdl: •Neutmi; ^Sligtitiy fresh; or Freshly ptowed fidd smdl 2. Site: Q Irrigated; \2 Land leveled; • Oitofi drained; •Pumped; • Graded (o drain via slope 3. SoHs: Ddb ^ do not become frequentiy ponded or saturated for tong (>7 days) to very tong durations (>30 days) during tiie gromng season WETLAND DETERMINATION IHydrophytic Vegetation Present? • Yes El No Wettand Hydrotogy Present? • Yes El No Hydric Soils Present? • Yes El No Remarte: No cut banks or evidence of a high water made r. PossiMy Mater of (fie U.S.? • Ves ElAto 2. Possibly exempt from Corps/EPA Ftegulation? • Ves El Ato (ifyes, check item(s) betow.) (a) O Non-tidd drainage md irrigation i^tohes eiaxwated on dry land (b) d ArttOcdIy irrigated areas v^tich ¥mdd revert to i^iland ti tiie inigation ceased. (c) n Arttltoid lakes or ponds created by excavating and/or (tiking dry land to collect and retain water and mrfitoh are used exdusively for such purposes as stock watering, irrigation, settiing basins, or rice grovmg. (d) • Artiticd retiecting or S¥irimnting pods or otim small omameritd bodies of v^er created by excavating arid/w land to retain water for primarily aestiik: reasons. (e) • Wateriilleddepresstons created in dry land inckiental to constiuction actiirity and pits excavated in dry land for ttie purpose of obtaining till, sand, or gravd imless and imtti ttie constivdton or excavation operation is abandoned and ttie resdting body of water meets tiie detinition of waters of ttie Urtited States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: No defined banks or drainage pattems. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner Koll Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 1 County: San Diego State: CA Do (4onnal Circumstances exist on the site? El Yes • No Is the site agnificantty disturt>ed (Atyptoal Situation)? Q Yes |3 No Is ttie area a potential Problem Area? • Yes El No (if needed, explain on reverse or attach separate sheet) Community ID: Bacctiaris Scrub Transect ID: Plot ID: 6 VEGETATION Dominant Plant Species StiBtum Indicator Dominant Plant Species Stratum Indtoator 1. Baccharis pilularis shrub UPL 9. 2. 10. 3. 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species t hat are OB L, FACW, or FAC (excluding FAC-) o% Remarks: 1. Assume presence of wetland vegetation? Q Yes |^ No 2. Rooted emergent vegetation present? • Yes ^ No I HYDROLOGY El Recorded Data (Describe in Remarics): Wettand Hydrology Indtoators: • Stream, Lake or Tide Gauge Primary Indtoators: El Aerial Photograpfis El Inurtoated • Ottier El Saturated in: • Upper 12" • 13-18" B Water Maries Q No Recorded Data Available • Drift Unes • Sediment Deposits El Drainage Pattems In Wettands Fieto Observations: Secxindary Incficators (2 or more required): 1 Depth of SurfeK:e Water M(in.) • Oxkiized Root Channels in: • Upper 12" [ Deptti to Water in Pit: rife On ) • 13-18" 1 Deptti to Saturated Soil: nfe(in.) • Water-Stained Leaves • Local Soil Sun/ey Data • FAC-Neutral Test • Ottier (Explain in Remarks) •CX>servafions and Remarics: Well defined banks, slight algal crust ot>served ml. Filamentous or sheet fonning algae present? El Ves • i\io m. Stope: O0-2%; or ^>2% m3. Oxictized rtiizospheres: ^2 new roots only; [3 okJ roots only; 0 new and dd roots. El "one ml. Ftooding: O none, flooding not protiable; 0 rare, unllkdy tnrt possible under unusud weatiier conditicms; • ocxastonal, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more ttian cmce In 2 years. \s. Duration: Z2 very brief, if <2 days; \3 brief, if 2-7 days, or ^ tong, if >7 days Site ponds water? IS Ves • No SOILS Map Unit Name (Series and Pfiase): Altammt SeriesVClay Phase Taxonomy (Subgroup): Oiromoxereits Drainage Class: Well-drained clays Penneability: Runoff: RekJ Obsenrations: Confinn Mapped Type? El Yes • No Profito Description: Deptti finches) Horizon Matrix Cotor (Munseil Moist) Mottte Cotors (Munseil Moist) Mottie Aburxiance/ Contrast Texture, Concmtions, Structures, eto. 0-3" 10YR4a none Loamy sand 3-18 Bedrodc Hydric Soil Indtoators: • Histosol • Histic Epipedon • SulfidtoOdor • Aquto Moisture Regime • Reducing Conditions • Gleyed or Low-Chroma Cotors • Concreticxis • High Organto Content in Surface Layer in Sandy Soils • Organto Streaking in Sandy Soils • Listed on Local Hydric Soils List • Listed on National Hydric Soils List • Other (Explain in Remarics) OberservBftons and Remarics: 1. SmeH: ^Neutid; OSU^tty fresh; or U FresNy pfowed fidd smeU 2. Site: £2 irrigated; O Land leveled; Q Ditch chained; • PurrvMd!: Q Graded to drdn via stope 3. Sols: Qdo O do not become fiequentiy ponded or saturated for tong (>7 days) to very tong durations (>30 days) dtuhig the growkig season WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes EI No Wettand Hydrology Present? El Yes • No Hydric Soils Present? • Yes El No Is ttiis Sampling Point wtthin a Wetiand? • Yes El No Flemarks: Cat hank 4 feet in widtti, sleep and nanow drainage. 1. PosdUy water Of ttie U.S.? El Ves DAio 2. PossHily exempt from Corps/EPA Regulation? • Ves DAio (If yes, check item(s) betow.) (a) O Ncxhtktal drainage emd inigation cHtdies excavated (Xl dry land (b) ^Artitically irrigated areas wtuchwodd revert to upland if ttie irri^ition ceased. (c) • Artifk^ lakes or ponds created tjy excavating and/rx'(Mking dry laixf to cdled and retejn water and whteh are used exdudvdy for such purposes as skxHc watermg. Irrigation, seating basins, or rice growing. (d) O ArtUkxti reflecting or swiiimmg pods or otiier sma^orriarnentdboctiesaf water created by excavate land to retain nmter for primarily aestiito reasors. (e) • Watertitted depresstons created in dry land Inddentd to constiuction activity and pits excavated in dry land for Itie purpose of obtaining till, sand, or gravd uniess and untii the constmction or excavation operafion is abandoned and the resdting body of water meets ttie definition d waters of tiie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: Channel: 4-ft wkle, very steep and narrow drainage, cut banks. Organic matter in soil Site ponds water In pockets along drainage. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner: KoU Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 | County: San Diego State: CA Do Normal Circumstances exist (XI tfie site? El Yes • 1^ Is ttie site significantiy clisturt>ed (Atypical Situation)? • Yes El No Is the area a potential Problem Area? • Yes El No (if needed, mplain on reverse or attach separate ^leet) Community ID: Coastal Sage Scrub Transect ID: Plot ID: 7 VEGETATION Dominant Plant Species Stratum Indtoator Dominant Plant Species Stratum Indtoator | 1. Foeniculum vuigare herb UPL 9. 2. Rhus mtegr^olia stmib UPL 10. 3. Heteromeles aibut^olia shrub UPL 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. 1 Percent of Dominant Species that are OB L, FACW, or FAC (excluding FAC-) o% Remarks: 1. Assume presence of wetland vegetation? Q Yes ^ No 2. Rooted emergent vegetation present? • Yes ^ No HYDROLOGY El Recorded Data ({>escribe in Remarics): Wettand Hydrology Indtoators: • Stream, Lake or Tide Gauge Primary Indtoators: EI Aerial Pfiotograpfis n Inundated • Ottier • Sahirated In: • Upper 12" • 13-18" • Water Maries • No Recorded Data Av^labto • Drift Unes • Sediment Deposits • Drainage Pattems in Wetiands Fieto Otiservattons: Secondary Indtoators (2 or more required): Depth of Surface Water 0 (in.) n Oxkiized Root Channels in: • Upper 12" Deptti to Water in Pit 0 (in.) • 13-18" [ Deptti to Saturated Soil: Q (in.) • Water-Stained Leaves • Locai Soil Survey Data • FAC-Neutral Test • Ottier (Explain in Remarics) 1 Otiservations and Remarics: ul. Filamentous or stieet fonning algae present? • Ves El i^o m2. Stope: 0 0-2%; or ^>2% Id. Oxkiized rhizospher^: [3 new roots (xily; 0 okl roots only; O new and dd roots, Dnone •4. Fkxxting: El none, flooding not prdbable; • rare, uniiiceiy but possible under unusua/ weatfier cond^tons; 1 13 occasicmd, occurs on an average of once or less In 2 years; or O frequent, occurs on an average of irwre than once In 1 2years. Ws. Duration: Z2 very brief, if <2 days; Q brief, if 2-7 days, or [3 long, if >7 days me. Site ponds water? • Ves El i^io SOILS Map UnRName (Series and Phase): Altamont Seiies\Clay Phase Taxonomy (Subgroup): Chromoxererts Drainage Class: Well-diained clays Penneability: Runoff: Reid Obsen/ations: Confimi Mapped Type? El Yes • l>to Profito Descripticxi: Deptti (inches) Horizon Matrix Coiof (Munseil Moist) Mottto Cotors (Munseil Moist) Mottto Abundance/ Contrast TexhJre, Ccxicretions, Structures, ete. 0-18" 10YR4/3 none Clay kKun Hydric SoH Indtoators: • Histosol • Histic Epipedon • SuHkltoOdor • Aquto Moisture Regime • Reducing CcxKiittons • Gleyed or Low-Chroma Cotors • Concretions • High Organto Content In Surface Layer in Sandy Soils • Organto Streeking in Sandy SoHs • Usted CXI Local Hydric Soils Ust • Usted on National Hydric Soils Ust • Ottier (Explain in Remarics) Oberserwaftons and Remarics: 1. SmeH: ElNeubal; H Sli^itty fresh; or D Freshly pfowed tidd smeH 2. Site: nimgated; HLandlevded; U Diteh drained; J3Punv)ed; U Graded to draki via stope 3. Soiis: Ddo El do not become frequenty ponded or saturated ibr iongf>7days> to very (ong durations (>30 days) during ttie growing season WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes El No Wetiand Hydrotogy Presenf? • Yes EI No Hydric SoUs Prasent? • Yes El No Is ttiis Sampling Point wittiin a Wettand? • Yes EI No ftemarks: 1. Possa)ly water of ttte U.S.? • Ves El Ato Z Posdbly exempt from Corps/EPA Regdatton? • Ves EI Aio (Ifyes, chedc item(s) betow.) (a) {3 Non-tidd (Uamage and irri^tkxi dlK^ excearaled on dry land (b) OMUtoany irrigated aaeaswt^wodd revert to uplamd if the irrigation ceased. (c) • Artitidd lakes or ponds created by excavating and/or diking dry land to collect and retain water and whidi are used exdush/dy for such purposes as stock watwing, inigation, settiing basins, or rice growing. (d) n Artiticd reHecUng or swimming poois or otiier smdl omamentd bodies d water created tiy excavating and/or c^ng dry landtoretdn water fbr prknarily aestiuc reasons. (e) n WatwtiUeddepres^xis created m dry land incidental to constiuction activity and pits excavded in dry 1^ purpose of obtaining fill, sand, or gravd unless and un& tiie constiuction (^ excavation operation Is td)andoned and ttie resdting body d water meets ttie definition of waters of tiie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: Upland, steep slopes DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner: Koll Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 1 County: San Diego 1 State: CA | Do (vtomiai Circumstances exist on ttie site? El Yes • No Community ID: Disturtied | Is ttie site ^gnificantty distuibed (Atyptoal Situation)? • Yes El No Transect ID: 1 Is the area a potential Problem Area? • Yes El No Plot ID: Sand9 1 (If needed, explain cxi reverse or attach separate sheet) 1 VEGETATION Dcxninant Plant Species stratum Indicator Dominant Plant Species stratum Indicator 1. Picris echioides heri> FAC 9. 2. 10. 3. 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species t fiat are OB L, FACW, or FAC (excluding FAC-) 100%, Fac-Neutral 0% 1 Remarks: 1. Assume presence of wetiand vegetatbn? • Yes No 2. Rooted emergent vegetation present? • Yes El No I HYDROLOGY Bl Reccxxted Data (Describe in Remarics): Wetland htydrotogy Indtoators: • Stteam, Lake or Tide Gauge Primary Indtoators: EI Aerial Ptiotographs • Inundated • Ottier • Saturated in: • Upper 12" • 13-18" • Water Maries \3 Ite Recorded Data Availatito • Drift Unes • Sediment Deposits n Drainage Pattems in Wettands Rekl Observations: Seccxidary Indtoators (2 or more required): Deptti of Surface Waten 0 (in.) • Oxtoized Root Channels in: • Upper 12" Deptti to Water In Pit (2 (in.) • 13-18" 1 Deptti to Saturated Soil: Q(in ) • Water-Stained Leaves • Local Soil Sunrey Data • FAC-Neutral Test • Ottier (Explain in Remarics) K)bserva(ions and Remarics: FHamentous or sheet tomiing algae present? • Ves El Aio Stope; • 0-2%; or El >2% WB. Oxkiized rtiizospheres: [3 new roots onl^ Ci oki roots only; O new and oki roots, El none Mi. Ftooding: El none, tiocxling not probebte; • rare, imlikdy but possibte tmder unusua/ weatiier conditions; 1 • cxxastond, occurs on an average of once or less In 2 years; or • frequent, occurs on an average of more than once In • 2 years. Ws. Duration: D very brief, if <2 days; \3 brief. If 2-7 days, or O long, if >7 days WB. Site ponds water? • Ves EI Aio SOILS Map Unit Name (Series and Phase): Altamont SeriesVClay Phase TaxcxKxny (Subgroup): Chromoxererts Drainage Class: Well-drained cUys Penneability: Runoff: Reki Observations: Confinn Mapped Type? El Yes • hto Profile Description: Deptti (inches) Horizon Matrix Coior (Munseil Moist) Mottto Cotors (Munseil Moist) Mottle Abundance/ Contrast Texture, Concreticxis, Structures, eto. 0 10YR4/3 Bedrock Hydric Soil incficators: • Histosol • Histic Epipedon • SulfidtoOdor • Aquk; Moisture Regime • Reducing Corxlitions • Gleyed or Low-Chroma Cotors • Concretions • High Organto Content In Surface Layer in Sandy Soils • Organto Sbeaking in Sandy Soils • Ustad on Local Hydric Soils List • Listed on National Hydric Soils List • Ottier (Explain in Remarics) OberssrvafiQns and Ftemarics: 1. Smell: HNeubd; OStif^fresh; or O Fresl^ ptowed tidd smdl 2. Site: 13 Irrigated; d l-and leveled; Q Ditch drdned; O Pumped; Q Graded to drain via stope 3. SoKs: ZUdo \3 do riot t)eccniefrequeritiyponcied()r saturated for torig(>7 days) to very tong duratirxK (>30 days) during the growing season WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes El No Wettand Hydrotogy Present? EI Yes • No Hydric Soils Present? • Yes El Ite Is ttiis Sampling Point wtthin a Wetiand? DYes El No Remarics: 1. Posdbly water of tiie U.S.? El Ves D^to 2. Posdbly exempt from Corps/EPA Regdatton? • Ves El Aio (If yes, check item(s) betow.) (a) O ffori-tidd drainage and inigaticm ditcties eiaavated CXI dry land (b) d MUteaUy irrigated areas whKh wodd revert to t^jland ti tiie irrigation ceased. (c) • Arttiteid Idces or ponds created by excwating and/or cSdng dry iand to cdled and retain water and wMci) are used exdudvdy for such purposes as skxdc watering, inigation, settiing basins, or rice Rowing. (d) n Arttficd reflecting or swimming pools or otfier smdl omamentai bodfes d water created by excavating and/or cffdng dry land to retain water fbr primarily aestivc reasons. (e) n WateriiKed depressions eroded in dry land inddentd to constiuction activity and pits excavated in dry land for ttie purpose of otjiainmg till, sand, or gravd unless and until the constnjction or excavation operation is abandoned and ttie resdting t>ody of water meets ttie definitton of waters of the United States (see 33 CFR 328.3(a)). Additional Comments/Remarics: Deeply cut banks (3.5-ft high). Steeply cut banks, bedrock is Channel 3.S-ft wkto for test pit «8 and 2.5-ft wkle for test pit «9. Approved by HQUSACE 3/92 no toose surface soil. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner Koll Envelopment Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 1 County: San Diego State: CA Do Normal Circumstances exist CXI the site? El Yes • No Is the site significantiy disturtied (Atyptoal S'ltuaticxi)? • Yes El No Is ttie area a potential Problem Area? • Yes El No (if needed, explain on reverse cx attach separate stieet.) Community ID: Disturbed Transect ID: Plot ID: 10 VEGETATION Dominant Plant Species Stratum Incficator Dominant Plant Species Stratajm Indtoator 1. Brassica nigra lierb UPL 9. 2. Picris echioides herb FAC 10. 3. 11. 4. 12. 6. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species tfiat are OB L, FACW, or FAC (excluding FAC-) 5O*.Fac-neutraltest0% Remarks: 1. Assume presence of wetland vegetation? Q Yes ^ No 2. Rooted emergent vegetation present? Q Yes ^ No HYDROLOGY EI Recorded Data (Describe in Remarics): Wetland Hydrotogy Indic^ors: • SbBam, Lake or Tide Gauge Primary Indtoators: El Aerial Photographs El Inundated • Ottier IS Saturated in: • Upper 12* •13-18' • Water Maries n fte Recorded Data Available • Drift Unes n Sediment Deposits El Drainage Pattems In Wettands Rekl Observattons: Seccxidary Indtoatcxs (2 cx more required): Deptti of Surface Water 1£ (in.) B Oxkiized Root Channels in: El Upper 1? i Deptti to Water in Pit: n^ (in.) • 13-18" 1 Deptti to Saturated Soil: n/a (in.) • Water-Stained Leaves • Local Soil Survey Data • FAC-Neutral Test • Other (Explain in Remarics) Uptiservations and Remarics: ktcalized ponding B. Filamentous or sfwet fonning algae present? ^Yes • Mo Stope: • 0-2%; or O >2% H. OxkSzed rttizospheres: \3 new roote only; Q dd roots only; ^ new and dd roots, Dnone Ftooding: \3 ncxie, tiooding not probable; O rare. tmlikdytKit possible under unusud weatiier conctitions; H • cxxastond, occurs on an average of once or less in 2 years; or El frequent, occurs on an average of more than once In H 2 years. H Duration; \3 very brief, if <2 days; • brief, if 2-7 cfays, or El iong, >7ciays • Site ponds water? O Ves • Aio SOILS Map Unit l^ame (Series and Phase): Altamont SeriesVClay Phase TaxcxKxny (Sutigroup): Chromoxererts Drainage Class: Well-drained clays Permeability: Runoff: Fiekl Otiservaticxis: Confirm Mapped Type? • Yes El No Profile Description: Deptti (inches) tHorizon Mattix Cotor (Munseil Moist) Mottte Cotors (Munseil Moist) Mottle Abundance/ Contrast Texture, Concretions, Staructures, eto. 0-5" 10YR4/3 10YR3/1 common/ medium Clay loam 5-18" 10YR3/1 none Clay loam Hydric Soil Indtoators: • Histosol • Histtc Epipedcxi El SulfidtoOdor • Aquto Moisture Regime • Reducing Condtttons EI Gleyed or Low-Chroma Cotors • Concretions • High Organto Content in Surfece Layer in Sandy Soils • Organto Sti^aking in Sandy Soils • Listed on Local Hydric Soils Ust • Ustad on National Hydric Soils List • Ottier (Explain in Remarics) Oberservafibns and Remarics: 1. Smdl: ONeubd; H Stightiy fresh; or U Freshly ptowed tidd smdl 2. Site: ^Irrigated; O Land leveled; • £Mc/i drained; ZlPumped; Q Graded to drdn via stope 3. Sotis: Eldb d do not become frequentiy ponded or satijrated for tong (>7 days) to very tong durations (>30 days) during the growing seascxi WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes EI No Wettand IHydrotogy Present? EI Yes • tte Hydric Soils Presenf? EI Yes • fte Is ttiis Sampling Point wittiin a Wetiand? El Yes • No Aemarite; 1. Possibly water d tiie U.S.? El Vas • Ato 2. Possibly exempt tiom Corps/EPA Regddton? \3 Yes El Aio (If yes, check item(s) betow.) (a) d Norh-tidd ckdnage and irrigation ditches excavated on dry land &>) OArttikxitiyimgated areas whtohwodd revert to upland if tiie inigation ceased. (c) n Arttiteid Idces or ponds created by excavating and/or cffdng dry land to cdiect end retain water and whteh are used exdudvdy fbr such purposes as stijck watering, irrigation, seating basins, or rice growing. (d) • Arliitoai reflecting or swknrntng pods or cither smatt omamentd bodes af water created by excavating andfor ctildng dry land to retain imter for primarily aesttuc reasons. (e) • Wateriilleddepresskxiscreded in dry land incklentd to constiuction activity and pits excavated in dry iand fbr tiw puipose of obtaining ai, sand, or gravd ui^ess and tmtil ttie constiuction cx'excavation operation is abemdoned and ttie resulting body of water meets ttie detinition of waters of tiie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Addtttonai Comments/Remarics: Channel: 2.5-ft wfcte. slightiy cut banks. Water flowing. Whtte crust on banks define high water mark. Chunks of black organic matter In top layer (decaying leaves, eto.). DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner. Koll Development Company Investigator(s): C. Smith and J. Hodge Date: 7-23-98 County: San Diego State: CA Do Nonnal Circumstances exist on ttie stte? EI Yes • Ite Is ttie stte significsntty disturtied (Atyptoal Situation)? • Yes EI No Is the area a potential Problem/Vrea? • Yes EI No (if needed, explain on reverse or attach separate sheet) Community ID: Baccharis scrub Transect ID: Plot ID: 11 VEGETATION Dominant Plant Species stratum Indicator Dominant Rant Species Stratum Indtoator 1. Ricinis communis shrub FACU 9. 2. Brassica nigra lieib UPL 10. 3. Baccharis pilularis shrub UPL 11. 4. Picris echioides herb FAC 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species tfiat are OB L, FACW, or FAC (excluding FAC-) 25%, Fac-neuttal 0% Remarks: 1. Assume presence of wetland vegetation? • Yes |^ No 2. Rooted emergent vegetation present? • Yes ^ No HYDROLOGY El Reccxded Data (Descritie HI Remarics): • Stream, Lake or Tkto Gauge El Aerial Photographs • Ottier • No Recorded Date Availabte Fiekl Otiservations: Deptti of Surface Water Deptti to Water in Pit Deptti to Saturated Soil: n/a fin.] .(in.) .(in.) Wettand Hydrotogy Indtoatcxs: Primary Indtoators: • Inundated • Saturated in: • Upper 12" •13-18" • Water Maries • Drift Unes • Sediment Deposite • Drainage Pattems in Wetiands Seccxidary indtoators (2 or more required): • Oxidized Root Chennels in: • Upper 12* • 13-18" n Water-Stained Leaves • Local Soi] Sun/ey Date • FAC-Neutral Test • Ottier (Explain in Remarics) lObservalidns and Remarics: ll. Filamentous or stieet fonning algae present? • Ves El^ I?. Stope: no-2%; or E]>2% Oxi^ed rtilzospfieres: O new roots cxily; okl roots cmly; O new and dd roots. El none FtoocSng: • none, tiooding nd probable; El rare, unlikely t>tJt posdde under tmusud weatiier conditions; n (xcastond, occurs on an average of once or less in 2 years; or Q frequent, occurs cm an average of more than once in 2 years. Duration: • very brief, <2 days; • brief, if 2-7 days, or • iong, if >7days Site ponds water? • Ves El Aio SOILS Map Unit Name (Series arxf Phase): Altamont SeriesVClay Phase Taxonomy (Subgroup): Chromoxererts Drainage Class: Well-drained clays Penneatxltty: Runoff: Field Otiservations: Confimi Mapped Type? • Yes • No Profile Description: Deptti (inches) Horizcxi Matrix Cokx (Munseil Moist) Mottte Colors (Munseil Moist) Mottle Atxjndanca/ Ccxitrast Texture, Concrrttons, Structures, eto. 0-18" 10YR4/3 Loam IHydric Soil Incficators: • Histosol • Histic Epipedon • SuHkficOdor • Aquto Moisture Ftegime • Rectodng Condttkxis • Gleyed cx Low-Chrcxna Cotors • Concretions • High Organto Ccxitent In Surfacse Layer in Sandy Soils • Organto Sh-eaking in Sandy Soils • Usted on Locid IHydric Soils List • Usted on National Hydric Soils • Other (Explain in Remarics) Oberservotions and Remarics: 1. SmeH: ElAisufra/; n Slig^ fresh; or n Freshly ptowed tidd smdl 2. Site: nimgated; \3 Land leveled; d Dib:h drained; dPtmped; 13 Graded to drain vta stope 3. SoHs: J3do 'Bi do not become tivquentiy ponded or sahjrated fbr tong (>7 days) to very tong durations (>30 days) durmg the growtiigseascm WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes El No Wettand Hydrotogy Present? • Yes EI No Hydric Soils Present? • Yes El No Is ttiis Sampling Point wtthin a Wettand? • Yes El No Remains: No cut banks wevidoice of high wata mark. 1. Possibly water of ttie U.S.? \3 Yes BA/b 2. Posdbly exemfafmmCorps/BPARegdaUon? • Ves El Ato (Ifyes, check Item(s) betow.) (a) \3 Nori-tidd drainage and irrigatirxi (Mtdies excavated (XI dry land (b) [3 Artiticdiy irrigated areas wtUchwodd revert to t^)lamd tithe irrigation ceased. (c) • Attitidd iafces or pondis created by excavating and/or cKlang dry land to cdiect and retain water and wfMCfi are used exdush/dy forsucA purposes as stoc^ watering, irrigaticm, settiing basins, or rice gnnving. (d) [3 Artiticd reUectirigcxswimn^ngpookcxcMiersnKaicxnarrientdboctiesd water created by excava^ngaricV land to retain watm for primaiily aesttite reasons. (e) • Watertilled clepresskxis eroded m ciry land Incxciental to construction activtty and pHs excavded in diy la^ puipose of obtaining till, sand, or gravd txtiess and unU ttie constmction or excavation operation is abanctonedand the resdting body d water meets ttie definition of waters of tiie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: atx>ve DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner Koll Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 1 County: San Diego State: CA Do Normal Circumstances exist on ttie stte? El Yes • Ite Is the site significantty distajrtied (Atyptoal Sttuation)? • Yes El No Is ttie area a potential Problem Area? • Yes El No (if needed, explain on reverse cx attach separate stieet) Community ID: Baccharis scrub Transect ID: Plot ID: 12 VEGETATION Dominant Plant Species Stratum Indicator Dominant Plant Species Sbatum Indtoator 1. Baccharis pilularis shiub UPL 9. 2. Foeniculum vuigare hert) UPL 10. 3. Brassica nigra bed) UH. 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species t hat are OB L, FACW, or FAC (excluding FAC-) o% \ Remarks: 1. Assume presence of wetland vegetation? G Yes ^ No 2. Rooted emergent vegetation present? • Yes El No HYDROLOGY El Recorded Date (Describe in Remarics): • Stream, Lake or Tide Gauge EI Aerial Ptiotograptis • Ottier • fte Recorded Date Availabte Fieto Otiservations: Deptti of Surface Water Deptti to Water in Ptt: Deptti to Saturated Soil: .(in.) .fm.) .(in.) Wettand Hydrotogy Indicators: Primary Indtoators: • Inurtoated • Saturated In: • Upper 12" • 13-18" • Water Maries • Drift Unes • Sediment Deposite n Drainage Pattems in Wettands Seccxidary Indtoators (2 cx more required): • Oxkiized Root Channels in: • Upper 12* • 13-18" • Water-Stained Leaves • Locel Soil Survey Date • FAC-lteutral Test • Other (Explain in Remarics) sanations and Remarics: Steeply cut banks, apixox. 3fi wide. Cut down to bedrock. Filamentous cx shed foiming algae present? • Ves El Aio Siope; 0 0-2%; or El>2% Oxktized rtilzosptieres: • new roots only; • oid roofs only; • new and dd roots, El none Ftooding; • none, 0o<xA°rig not probabie; • rare, uniiiceiy but possibie under unusuaiweaffiercxxtoificxis; • occaslond, cxxsurs on an average of once or less In 2 years; or • frequent occurs cm an average of more than once in 2 years. Duration; [3 very brief, if <2 days; d brief, if 2-7 days, or Z3 long, if >7 days Site ponds water? • Ves El Aio SOILS Map UnttName (Series and Ptiase): Altamont SeriesVClay Phase Taxonomy (Subgroup): Chromoxererts Drainage Class: Well-drained clays Penneability: Runoff: Field Obsenrations: Confirm Mapped Type? El Yes • tte Profite Description: Deptti Oncfies) Horizon Matrix Cotor (Munseil Moist) Mottto Cotors (Munseil Moist) Mottte Abunctance/ Cootrast Texture, Concretions, Structures, eto. 0" 10YR4/3 Con^Mcted clay loam Hydric Soil Indtoators: • Histosol • Histic Epipedon • SuHkltoOdor • Aquto Moisture Regime • Reducing Condtttons n Gleyed or Low-Chroma Cotors • Ccxicretions • High Organto Content in Surface Layer in Sandy Soils • Organto Streaking in Sandy SoHs • Listed on Locai Hydric Soils List • Listed on National Hydric Soils Ust • Ottier (Explain In Remarics) Oberservaftons and Remarics: 1. SmeH: QNeubd; • Slig/ity^ssir; or Q Freshly ptowed tidd smdl 2. Ste: • Irrigated; • Land leveled; • DAc/i drdned; • Pumped; • Gracted 10 drain via dope 3. Sotis: Udo D do not become frequentiy ponded or sahxatad for tong (>7 days) to very tong durations (>30 days) dtxing tiie growing seascxi WETLAND DETERMINATION Hydrophytic Vegetation Present? • Yes El No Wetiand Hydrology Present? • Yes El No Hydric Soils Present? • Yes El No Is ttiis Sampfing Point wtthin a Wetiand? OYes B No Remarics: Evidenceof high water maric. 1. Posdbly water of ttie U.S.? El Ves QAto 2. Posdbly exempt from Corps/EPA FlegtMation? • Ves QiVO (If yes, check Uem(s) betow.) (a) • Ncxi-tidd drainage and irrigation catches excavated cm dry land (b) a Artiticdiy irrigated areas v^titehwexM revert to i^jland if the inigaticm ceased. (c) n Artifteid lakes or ponds eroded by excavating and/or cSMng dry land to cdiect and retain water and Htucfi are used exdudvdy for such purposes as stocic watarfng, irrigation, settiing basins, cx rice growing. (d) • Artiticd reflecting or swimrdng poois or otiier smdl omamentd bodies of water created tjy excavating and/cx diking dry land to retain imter tor primarily aesttite reasons. (e) • Watertilled depresstons eroded in dry laid Inddentd to constmction activity and pits excavated in dty land fcx tiie ptxposedobtdnlngfUI. sand, or gravd txtiess and untU the constivction or excavation operation is abandoned and ttie resuUing body d water meets tiie deSniticxi of waters of ttie United States (see 33 CFR 328.3(a)). Approved by HQUSACE 3/92 Addtttonai Comments/Remarics: Deeply cut banks (3.5-ft high). Cut down to hani day soil and rock. Channel 3.5-ft wkte. DATA FORM ROUTINE ON-SITE DETERMINATION METHOD Project/Site: Fox Property Applicant/Owner Koll Development Company lnvestigator(s): C. Smith and J. Hodge Date: 7-23-98 1 County: San Diego State: CA Do Normal Circumstances exist on ttte stte? EI Yes • No Is the site significanUydisttjrtied (Atyptoal Situation)? • Yes El No Is the area a potential Problem Area? • Yes El No (If needed, explain on reverse cx atiach separate stieet) Community ID: Baccharis scrub Transect ID: Plot ID: 13 VEGETATION Dominant Plant Species stratum Indtoator Dominant Plant Species Stratum Indtoattx 1. Baccharis pilularis shnib UPL 9. 2. Foeniculum vuigare herb UPL 10. 3. Brassica nigra herb UPL 11. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species t fiat are OB L, FACW, or FAC (excluding FAC-) o% Remarks: 1. Assume presence of wetland vegetation? • Yes No 2. Rooted emergent vegetation present? • Yes [SI No HYDROLOGY Q Recorded Date (Describe in Remarics): • Stream, Lake or Ttoe Gauge • Aerial Photograpfis • Ottier El No Recorded Date Availabte Fieto Observations: Deptti of Surface Water: Deptti to Water in Pit Deptti to Saturated Soil: .(in.) .fin.) .fm.) Wetiand Hydrotogy Indtoators: Primary Indtoatcxs: • Inunctated • Saturated in: • Upper 12" • 13-18" • Water Maries • Drift Unes n Sediment Depostts O Drainage Pattems in Wettands Secondary Indtoators (2 or more required): • Oxkiized Root Channels in: • Upper 12* • 13-18* • Water-Stained Leaves • Local Soil Sunrey Date • FAC-Neutral Test • Ottier (Explain in Remarics) Observations and Remarics: 1. Filamentous cx shed fonning algae present? • Ves El Aio 2. Stope: O0-2%; or JS>2% 3. OxkSzed rtiizospheres: £3 new rocris only; 13 dd roots only; [3 new and dd roots, Elnone i 4. flooding: • none, tiooding not probabto; • rare, ixillkdy but possible under unusua/ weattier conditions; • occastond, occurs cm an average of once or iess in 2 years; or El frequent, cxxurs cxi an average of more than once in 2 years. Duration: B very brief, if <2 days; • brief, if 2-7 days, or • iong, if >7 days [ 6. Site ponds watw? • Ves El Aio SOILS Map UnttName (Series and Ptiase): Altamont SeriesVClay Phase Taxonomy (Subgroup): Chromoxererts Drainage Class: Well-dndned clays Permeatiiltty: Runoff: Fietel Obsen/ations: Confirm Mapped Type? • Yes • No Profite Description: Deptti Onches) Horizon Matrix Cotor (Munseil Moist) Mottte Colors (Munseil Motet) Mottte Abundance/ Contrast Textaire, Concretions, Structures, eto. 0" 10YR4/3 Bedrock Hydric Soil Indtoators: • Histosol • Histic Epipedon • SuflMtoOdor • Aquto Moisture Regime • Reducing Ccxidtttons • Gleyed cx Low-Chroma Cotors • Ccxxxeticxis • High Organto Content in Surface Layer in Sandy Soils • Organto Sbeaking in Sandy Soite • Listed CXI Local Hydric S<}ite Ust • Listed on Nattonal Hydric Soite Ust • Ottier (Explain in Remarics) Oberservaftons and Ftemarics: 1. Smdl: ONauhal; OSI^^tivsh; or [3 FresNy ptowed tidd smdl Z Site: Oimgated; \3 l-and leveled; \3 Diteh drdned; OPtimped; [3 Graded to drdn via stope 3. SoHs: [3 do O do nd become tiequentiy ponded or satixated for tong (>7 days) to very tong durations (>30 days) ckuing tiie growing season WETLAND DETERMINATION Hydrophytic Vegetaticxi Present? • Yes El No Wettand Hydrotogy Present? El Yes • Ite Hydric Soite Present? DYes EI No Is ttite Sampling Point wttf«n a Wettand? DYes EI No Remarks: Channel widens out here, approximately 8-ft in width. Banks less defined. 1. Posdbly water dtiw U.S.? El Vas • Alb 2. Posdbly exenv>t from Corf^/EPARegt^ation? • Ves El Aio (If yes, dierdc item(s) l)dow.) (a) • Ncxi-tidd drdnage and irrigaticm ctitches excavated on dty land (b) O ArtiOcdIy Irrigated areas virtiteh ¥mdd revert to t^ilatid if the Irrigaticm ceased. (c) • Artiticxd lakes cx p(Xids eroded by excavating and/cx cKkmg dry land to cdled and retain water and wtuc^ are used exdudvdy fcx such purposes as slock watering, irrigaticm. settiing basins, or rice growing. (d) • Artiticd retiecting cx swimming poois or offier smdl cxnamentd bcxges of water created by excavating and/or cKdng dry land to retain water for prUnarily aesthte reasons. (e) • WateriHIed depresskxis eroded in dty land mckientd to constmction activity and pits eiaxivded in dty 1^ purpose of obtdning if//, sand, or gra vei uniess and unfii ffia consfnx^lton or excavation c^perafion is abandoned and the rssuifrng body of water meets the detinition of wafere of ffie Untfed Slates Csee 33 CFR 3^.3(a)). Approved by HQUSACE 3/92 Additional Comments/Remarics: Channel: 8-ftwkte. Banks less defined. Whtte cmst indtoates high water maric. Noottterobvtous hydrotogy indicators.