August 26, 2015

Ana Straabe VIA EMAIL Baldwin Hills Regional Conservation Authority [email protected] Los Angeles River Center and Gardens 570 West Avenue 26, Suite 100 Los Angeles, California 90065

Subject: Results of Special Status Surveys for the Blair Hills Corridor (Segment C) Portion of the Proposed Park to Playa Trail Project, Los Angeles County, California

Dear Ms. Straabe:

This Letter Report presents the findings of special status plant surveys conducted for the Blair Hills Corridor (Segment C) portion of the proposed Park to Playa Trail project (hereinafter referred to as the “proposed Segment C project”) located in Los Angeles County, California (Exhibit 1).

PROJECT DESCRIPTION AND LOCATION

The objective of the proposed Segment C project is to link existing trails in public parks and open spaces in the Baldwin Hills area. The proposed Segment C project includes a new trail leading down from the parking lot of the Baldwin Hills Scenic Overlook; along the northern end of a retention basin on the parcel owned by the Baldwin Hills Regional Conservation Authority (BHRCA) and on the slopes around the parcel that were previously developed with a school and where the Stoneview Nature Center is under construction; down to the northeastern section of the BHRCA parcel, and the proposed pedestrian bridge over La Cienega Boulevard to connect to an existing trail at the Kenneth Hahn State Recreation Area (KHSRA).

The trail improvements on the BHRCA property would include an at-grade compacted earth trail; identification, wayfinding and regulation signs; an interpretive node (e.g., information kiosk, shade structure, benches, and trash can); landscaping with native and restoring habitat in disturbed areas and adjacent to the trail; relocation of the access road, installation of new fencing and relocation of the fence, relocation of the water line, and installation of a drip irrigation system; undergrounding of existing place utility lines along La Cienega Boulevard; and construction of a pedestrian bridge over La Cienega Boulevard.

The approximate 18-acre BHRCA parcel is located in the Baldwin Hills area of the western section of Los Angeles County in the City of Culvert City. It is bound by La Cienega Boulevard on the east; private properties under active oil and gas exploration, production, processing, and associated activities on the south and southwest; the Baldwin Hills Scenic Overlook to the northwest; and single-family homes, Blair Hills Park, and the Stoneview Nature Center site (under construction) on the north. The site was formerly used for oil operations. Vegetation in this area is primarily a mix of sage scrub 3 Hutton Centre Drive and grassland, with a small amount of chaparral and mulefat thicket (Exhibit 2). Suite 200 Santa Ana, CA 92707

Tel 714.751.7373 www.Psomas.com Ana Straabe August 26, 2015 Page 2

METHODS

Botanical surveys were floristic in nature and consistent with the protocols created by the California Department of Fish and Wildlife (CDFW) (CDFG 2009). Prior to the field surveys, a literature search was conducted to identify special status plant species reported from the vicinity of the survey area. Sources reviewed include the U.S. Geological Survey’s (USGS’) Beverly Hills, Hollywood, Los Angeles, South Gate, Inglewood, and Venice 7.5-minute quadrangles in the California Native Plant Society’s (CNPS’) Locational Inventory of Rare and Endangered Vascular Plants of California (CNPS 2015) and the CDFW’s California Natural Diversity Database (CNDDB) (CDFW 2015).

Rainfall received in the winter and spring determines the germination of many annual and perennial herb species. According to the California Irrigation Management Information System (CIMIS), the region (data taken from Santa Monica) received 8.5 inches of precipitation between October 1, 2014 and May 31, 2015; the average for that time period (data taken from October 1993 to May 2015) was approximately 13.3 inches (CIMIS 2015).

Reference populations were monitored for annual and difficult-to-detect target species to ensure that the surveys were comprehensive. This is especially relevant during periods of unusual rainfall patterns or below average rainfall. If conditions at a nearby reference population are suitable for germination and growth, then it can be inferred that conditions would also be suitable in the survey area. Table 1 summarizes the flowering status of known reference populations monitored during the 2015 special status plant survey period. Reference populations were not monitored for species with a California Rare Plant Rank (CRPR) of 3 or 4; large perennials (e.g., Nuttall’s scrub oak [Quercus dumosa]), which would be identifiable throughout the year; or for species with no extant, publically accessible reference population in the project region.

TABLE 1 REFERENCE POPULATION BLOOMING DATES

Date Observed Species Area Monitored for Blooming Blooming California macrophylla Tehachapi Mountains March 23, 2015 round-leaved filaree Chorizanthe parryi var. fernandina West of the San Fernando Valley April 24, 2015 San Fernando Valley spineflower Dudleya multicaulis University of California, Irvine March 24, 2015 many-stemmed dudleya

The survey area was surveyed by BonTerra Psomas Senior Biologist Allison Rudalevige on April 16 and June 25, 2015. The total number of person-hours spent was approximately eight hours. Potentially suitable habitat for special status plant species in the survey area was systematically surveyed during the site visits. All plant species observed were recorded in field notes. Plant species were identified in the field or collected for later identification. Plants were identified to the taxonomic level necessary to determine whether or not they are a special status species. Plants were identified using taxonomic keys, descriptions, and illustrations in Baldwin et al. (2012), Hickman (1993), and Munz (1974). and nomenclature follows the Jepson Herbarium (2014), Hickman (1993), and current scientific journals for scientific and common names.

Ana Straabe August 26, 2015 Page 3

Special status plant species were mapped either with a Global Positioning System (GPS) unit or onto a one inch equals 150 feet (1ʺ = 150′) scale aerial when the population was not directly accessible. Data was collected on the number and phenology of individuals; microsite characteristics such as slope, aspect, soil texture, and surrounding habitat; and associated species.

SURVEY RESULTS

Table 2 identifies the special status plant species with potential to occur in the survey area and the survey results. One special status species, Southern California black walnut (Juglans californica), was observed during the survey effort and is discussed below. A list of all plant species observed in the survey area during the surveys can be found in Attachment A. Representative photographs are provided in Attachment B.

TABLE 2 SPECIAL STATUS PLANT SPECIES REPORTED FROM THE SURVEY AREA VICINITY

Status Habitat Suitability Species USFWS CDFW CRPR and Survey Results No suitable habitat and not observed Abronia maritima – – 4.2 during focused surveys; not expected red sand-verbena to occur. No suitable habitat and not observed Arenaria paludicola FE SE 1B.1 during focused surveys; not expected marsh sandwort to occur. Astragalus brauntonii Marginally suitable habitat, but not FE – 1B.1 Braunton’s milkvetch observed during focused surveys. No suitable habitat; only known from Astragalus pycnostachyus var. one occurrence and not observed lanosissimus FE SE 1B.1 during focused surveys; not expected Ventura marsh milkvetch to occur. No suitable habitat and not observed Astragalus tener var. titi FE SE 1B.1 during focused surveys; not expected coastal dunes milkvetch to occur. No suitable habitat and not observed Atriplex parishii – – 1B.1 during focused surveys; not expected Parish’s brittlescale to occur. No suitable habitat and not observed Atriplex serenana var. davidsonii – – 1B.2 during focused surveys; not expected Davidson’s saltscale to occur. California macrophylla Potentially suitable habitat, but not – – 1B.2 round-leaved filaree observed during focused surveys. Calochortus catalinae Potentially suitable habitat, but not – – 4.2 Catalina mariposa lily observed during focused surveys. Calochortus plummerae Potentially suitable habitat, but not – – 4.2 Plummer’s mariposa lily observed during focused surveys. No suitable habitat and not observed Calystegia felix – – 3.1 during focused surveys; not expected lucky morning-glory* to occur. No suitable habitat; considered Calystegia sepium ssp. binghamiae extinct and not observed during – – 1A Santa Barbara morning-glory focused surveys; not expected to occur.

Ana Straabe August 26, 2015 Page 4

TABLE 2 SPECIAL STATUS PLANT SPECIES REPORTED FROM THE SURVEY AREA VICINITY

Status Habitat Suitability Species USFWS CDFW CRPR and Survey Results No suitable habitat and not observed Camissoniopsis lewisii [Camissonia l.] – – 3 during focused surveys; not expected Lewis’ evening-primrose to occur. Centromadia parryi ssp. australis Potentially suitable habitat, but not – – 1B.1 southern tarplant observed during focused surveys. No suitable habitat and not observed Chaenactis glabriuscula var. orcuttiana – – 1B.1 during focused surveys; not expected Orcutt’s pincushion to occur. No suitable habitat and not observed Chenopodium littoreum – – 1B.2 during focused surveys; not expected coastal goosefoot to occur. No suitable habitat and not observed Chloropyron maritimum ssp. maritimum FE SE 1B.2 during focused surveys; not expected salt marsh bird’s-beak to occur. Marginal potentially suitable habitat, Chorizanthe parryi var. fernandina FC SE 1B.1 but not observed during focused San Fernando Valley spineflower surveys. Convolvulus simulans Potentially suitable habitat, but not – – 4.2 small-flowered morning-glory observed during focused surveys. Deinandra paniculata Suitable habitat, but not observed – – 4.2 paniculate tarplant during focused surveys. Dichondra occidentalis Potentially suitable habitat, but not – – 4.2 western dichondra observed during focused surveys. No suitable habitat and not observed Dithyrea maritima – ST 1B.1 during focused surveys; not expected beach spectaclepod to occur. Dudleya multicaulis Potentially suitable habitat, but not – – 1B.2 many-stemmed dudleya observed during focused surveys. No suitable habitat and not observed Eryngium aristulatum var. parishii FE SE 1B.1 during focused surveys; not expected San Diego button-celery to occur. No suitable habitat and not observed insulare – – 1B.3 during focused surveys; not expected island wallflower to occur. No suitable habitat and not observed Erysimum suffrutescens – – 4.2 during focused surveys; not expected suffrutescent wallflower to occur. No suitable habitat and not observed palmeri – – 2B.1 during focused surveys; not expected Palmer’s frankenia to occur. No suitable habitat; considered Helianthus nuttallii ssp. parishii extinct and not observed during – – 1A Los Angeles sunflower focused surveys; not expected to occur. No suitable habitat and not observed Hesperocyparis macrocarpa – – 1B.2 during focused surveys; not Monterey cypress expected to occur.

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TABLE 2 SPECIAL STATUS PLANT SPECIES REPORTED FROM THE SURVEY AREA VICINITY

Status Habitat Suitability Species USFWS CDFW CRPR and Survey Results No suitable habitat and not observed Hordeum intercedens – – 3.2 during focused surveys; not bobtail barley expected to occur. Marginal potentially suitable habitat, Horkelia cuneata var. puberula – – 1B.1 but not observed during focused mesa horkelia surveys. Juglans californica Suitable habitat present. Observed – – 4.2 Southern California black walnut during focused surveys. No suitable habitat and not observed Juncus acutus ssp. leopoldii – – 4.2 during focused surveys; not southwestern spiny rush expected to occur. No suitable habitat and not observed Lasthenia glabrata ssp. coulteri – – 1B.1 during focused surveys; not Coulter’s goldfields expected to occur. Lepidium virginicum var. robinsonii Potentially suitable habitat, but not – – 4.3 Robinson’s pepper-grass observed during focused surveys. No suitable habitat and not observed Mucronea californica – – 4.2 during focused surveys; not California spineflower expected to occur. No suitable habitat and not observed stenocarpum – – 2B.2 during focused surveys; not mud nama expected to occur. No suitable habitat and not observed Nasturtium gambelii FE ST 1B.1 during focused surveys; not Gambel’s water cress expected to occur. No suitable habitat and not observed Navarretia fossalis FT – 1B.1 during focused surveys; not spreading navarretia expected to occur. No suitable habitat and not observed Navarretia prostrata – – 1B.1 during focused surveys; not prostrate vernal pool navarretia expected to occur. No suitable habitat and not observed Orcuttia californica FE SE 1B.1 during focused surveys; not California Orcutt grass expected to occur. No suitable habitat and not observed hubbyi – – 4.2 during focused surveys; not Hubby’s phacelia expected to occur. No suitable habitat and not observed Phacelia ramosissima var. austrolitoralis* – – 3.2 during focused surveys; not south coast branching phacelia expected to occur. Phacelia stellaris Potentially suitable habitat, but not – – 1B.1 Brand’s star phacelia observed during focused surveys. No suitable habitat and not observed Potentilla multijuga – – 1A during focused surveys; not Ballona cinquefoil expected to occur. No suitable habitat and not observed Pseudognaphalium leucocephalum – – 2B.2 during focused surveys; not white rabbit-tobacco expected to occur.

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TABLE 2 SPECIAL STATUS PLANT SPECIES REPORTED FROM THE SURVEY AREA VICINITY

Status Habitat Suitability Species USFWS CDFW CRPR and Survey Results Quercus dumosa Potentially suitable habitat, but not – – 1B.1 Nuttall’s scrub oak observed during focused surveys. No suitable habitat; considered Ribes divaricatum var. parishii extinct and not observed during – – 1A Parish’s gooseberry focused surveys; not expected to occur. No suitable habitat and not observed Sidalcea neomexicana – – 2B.2 during focused surveys; not salt spring checkerbloom expected to occur. No suitable habitat and not observed Suaeda esteroa – – 1B.2 during focused surveys; not estuary seablite expected to occur. No suitable habitat and not observed Suaeda taxifolia – – 4.2 during focused surveys; not woolly seablite expected to occur. defoliatum Potentially suitable habitat, but not – – 1B.2 San Bernardino aster observed during focused surveys. No suitable habitat and not observed Symphyotrichum greatae – – 1B.3 during focused surveys; not Greata’s aster expected to occur. USFWS: U.S. Fish and Wildlife Service; CDFW: California Department of Fish and Wildlife; CRPR: California Rare Plant Rank LEGEND: Federal (USFWS) State (CDFW) FE Endangered SE Endangered FT Threatened ST Threatened FC Candidate

CRPR 1A Plants presumed extirpated in California and either rare or extinct elsewhere 1B Plants Rare, Threatened, or Endangered in California and elsewhere 2B Plants Rare, Threatened, or Endangered in California but more common elsewhere 3 Plants about which we need more information – A Review List 4 Plants of limited distribution – A Watch List CRPR Threat Code Extensions None Plants lacking any threat information .1 Seriously threatened in California (over 80% of occurrences threatened; high degree and immediacy of threat) .2 Fairly threatened in California (20–80% of occurrences threatened; moderate degree and immediacy of threat) .3 Not very threatened in California (<20% of occurrences threatened; low degree and immediacy of threat or no current threats known) Note: Taxa observed in the survey area are shown in boldface type. * Taxon not currently recognized by the Jepson Herbarium (2014), but it is still tracked by the CDFW and/or CNPS.

Southern California Black Walnut Southern California black walnut has a CRPR of 4.2. This deciduous tree occurs on hillsides and canyons at elevations between approximately 100 and 2,950 feet above msl (Baldwin et al. 2012). It is known from the Outer South Coast Ranges and is cultivated in the Santa Lucia Range and southwestern California, excluding the Channel Islands and the San Bernardino Mountains (Baldwin et al. 2012).

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Four Southern California black walnut trees were observed adjacent to the parking lot at the west end of the survey area (Exhibit 3). The trees were all young and primarily in fruit. Associated species include coyote brush (Baccharis pilularis ssp. consanguinea), mule fat (Baccharis salicifolia ssp. salicifolia), and California brittlebush (Encelia californica).

CONCLUSIONS/RECOMMENDATIONS

One special status plant species was observed in the survey area during the 2015 survey. It is not anticipated that the Southern California black walnuts in the survey area would be impacted by proposed project activities. Although reference populations and regional rainfall amounts were monitored to ensure the scientific adequacy of these focused surveys, there is always a minimal potential for false negative survey results as species could possibly be present on a site but may not be detectable at the time of the surveys.

Sincerely, BonTerra Psomas

Marc T. Blain Allison D. Rudalevige Senior Project Manager Senior Biologist

Attachments: Exhibits 1–3 A – Plant Compendium B – Site Photographs

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REFERENCES

Baldwin, B.G., D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken (Eds.). 2012. The Jepson Manual: Vascular Plants of California (Second ed.). Berkeley, CA: University of California Press.

California Department of Fish and Game (CDFG). 2009 (November 24). Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Natural Communities. Sacramento, CA: CDFG.

California Department of Fish and Wildlife (CDFW). 2015 (April). California Natural Diversity Database. Records of Occurrence for Beverly Hills, Hollywood, Los Angeles, South Gate, Inglewood, and Venice U.S. Geological Survey 7.5-minute quadrangles. Sacramento, CA: CDFW, Natural Heritage Division.

California Native Plant Society (CNPS). 2015. Locational Inventory of Rare and Endangered Vascular Plants of California (online edition, v8-02). Records of Occurrence for Beverly Hills, Hollywood, Los Angeles, South Gate, Inglewood, and Venice U.S. Geological Survey 7.5-minute quadrangles. Sacramento, CA: CNPS. http://www.rareplants.cnps.org/advanced.html.

California Irrigation Management Information System (CIMIS). 2015. CIMIS Monthly Report for Santa Monica Station 99. Sacramento, CA: California Department of Water Resources, CIMIS. http://www.cimis.water.ca.gov.

Ana Straabe August 26, 2015 Page 8

Hickman, J.C., Ed. 1993. The Jepson Manual of Higher Plants of California. Berkeley, CA: University of California Press.

Jepson Herbarium. 2014 (December 19, Revision 2). Jepson eFlora. Berkeley, CA: Jepson Herbarium. http://ucjeps.berkeley.edu/IJM.html.

Munz, P.A. 1974. A Flora of Southern California. Berkeley, CA: University of California Press

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ATTACHMENT A

PLANT COMPENDIUM

Blair Hills Corridor (Segment C) Portion of the Proposed Park to Playa Trail Project

PLANT SPECIES OBSERVED IN THE SURVEY AREA DURING SURVEYS

Species Scientific Name Common Name GYMNOSPERMS PINACEAE - PINE FAMILY Pinus sp. pine ADOXACEAE - MUSKROOT FAMILY Sambucus nigra ssp. caerulea blue elderberry AIZOACEAE - FIG-MARIGOLD FAMILY Carpobrotus edulis* freeway iceplant ANACARDIACEAE - SUMAC FAMILY Schinus molle* Peruvian pepper tree Schinus terebinthifolius* Brazilian pepper tree Toxicodendron diversilobum western poison oak APIACEAE - CARROT FAMILY Foeniculum vulgare* fennel ARALIACEAE - GINSENG FAMILY Hedera helix* English ivy - SUNFLOWER FAMILY Ambrosia acanthicarpa annual bur-sage Ambrosia psilostachya western ragweed Artemisia californica California sagebrush Baccharis pilularis ssp. consanguinea coyote brush Baccharis salicifolia ssp. salicifolia mule fat Carduus pycnocephalus ssp. pycnocephalus* Italian thistle Centaurea melitensis* tocalote Deinandra fasciculata fascicled tarplant Encelia californica California brittlebush Ericameria sp. goldenbush Erigeron canadensis horseweed Glebionis coronaria* crown daisy Grindelia camporum field gumplant Helminthotheca echioides* bristly ox-tongue Heterotheca grandiflora telegraph weed Hypochaeris glabra* smooth cat's-ear Lactuca serriola* prickly lettuce Malacothrix saxatilis cliff desert dandelion Pseudognaphalium californicum California everlasting Pseudognaphalium canescens hairy everlasting Pseudognaphalium luteoalbum* white lamb everlasting Pseudognaphalium microcephalum white head everlasting Silybum marianum* blessed milk thistle Sonchus oleraceus* common sow thistle Stephanomeria exigua small wire-lettuce Uropappus lindleyi silver puffs

R:\Projects\ALT\3ALT000302\Plant Report_SegC-082615.docx A-1 Plant Compendium Blair Hills Corridor (Segment C) Portion of the Proposed Park to Playa Trail Project

PLANT SPECIES OBSERVED IN THE SURVEY AREA DURING SURVEYS

Species Scientific Name Common Name - BORAGE FAMILY Phacelia tanacetifolia lacy phacelia - MUSTARD FAMILY Hirschfeldia incana* shortpod mustard Raphanus sativus* radish CACTACEAE - CACTUS FAMILY Opuntia ficus-indica* mission prickly pear CARYOPHYLLACEAE - PINK FAMILY Silene sp. catchfly CHENOPODIACEAE - GOOSEFOOT FAMILY Atriplex semibaccata* Australian saltbush Salsola tragus* Russian thistle CONVOLVULACEAE - MORNING-GLORY FAMILY Calystegia macrostegia coast morning-glory CRASSULACEAE - STONECROP FAMILY Crassula connata pygmyweed CUCURBITACEAE - GOURD FAMILY Cucurbita foetidissima calabazilla Marah macrocarpa chilicothe EUPHORBIACEAE - SPURGE FAMILY Euphorbia peplus* petty spurge Ricinus communis* castor bean - LEGUME FAMILY Acmispon glaber deerweed multiflorus* Spanish broom Medicago polymorpha* California burclover Melilotus indicus* sourclover FAGACEAE - OAK FAMILY Quercus agrifolia coast live oak GERANIACEAE - GERANIUM FAMILY Erodium botrys* longbeak filaree Geranium rotundifolium* roundleaf geranium JUGLANDACEAE - WALNUT FAMILY Juglans californica southern California black walnut MALVACEAE - MALLOW FAMILY Malva parviflora* cheeseweed MYRSINACEAE - MYRSINE FAMILY Lysimachia arvensis* scarlet pimpernel OLEACEAE - OLIVE FAMILY Olea europaea* olive ONAGRACEAE - EVENING PRIMROSE FAMILY Oenothera elata ssp. hirsutissima great marsh evening primrose PAPAVERACEAE - POPPY FAMILY Eschscholzia californica California poppy

R:\Projects\ALT\3ALT000302\Plant Report_SegC-082615.docx A-2 Plant Compendium Blair Hills Corridor (Segment C) Portion of the Proposed Park to Playa Trail Project

PLANT SPECIES OBSERVED IN THE SURVEY AREA DURING SURVEYS

Species Scientific Name Common Name POLYGONACEAE - BUCKWHEAT FAMILY Eriogonum fasciculatum California buckwheat ROSACEAE - ROSE FAMILY Heteromeles arbutifolia toyon RUBIACEAE - COFFEE FAMILY Galium angustifolium narrow leaved bedstraw Galium aparine goose grass SCROPHULARIACEAE - FIGWORT FAMILY Verbascum virgatum* wand mullein SOLANACEAE - NIGHTSHADE FAMILY Datura wrightii Wright's jimson weed Nicotiana glauca* tree tobacco Solanum xanti chaparral nightshade ZYGOPHYLLACEAE - CALTROP FAMILY Tribulus terrestris* puncturevine MONOCOTS ARECACEAE - PALM FAMILY Phoenix canariensis* Canary Island palm Washingtonia robusta* Mexican fan palm POACEAE - GRASS FAMILY Arundo donax* giant reed Avena barbata* slender wild oat Avena fatua* wild oat Bromus diandrus* ripgut grass Bromus hordeaceus* soft chess Cortaderia selloana* pampas grass Cynodon dactylon* bermuda grass Distichlis spicata salt grass Elymus condensatus giant wild-rye Festuca perennis* rye grass Hordeum murinum* wall barley Pennisetum setaceum* crimson fountain grass Stipa miliacea var. miliacea* smilo grass THEMIDACEAE - BRODIAEA FAMILY Dichelostemma capitatum blue dicks * non-native

R:\Projects\ALT\3ALT000302\Plant Report_SegC-082615.docx A-3 Plant Compendium

ATTACHMENT B

SITE PHOTOGRAPHS

Southern California black walnut (Juglans californica) observed in the survey area.

Southern California black walnut (Juglans californica) observed in the survey area. D:\Projects\Alta\J003\Graphics\Plant_Report\SegC\Ex_SP1_20150821.ai Site Photographs Attachment B Park to Playa Trail Project – Segment C

(08/21/15 LEW) R:\Projects\Alta (ALT)\3ALT000302\Graphics\Plant_Report\ExB_SP_20150821.pdf