Hallmark‐Barham Specific Plan EIR
Technical Appendices
Appendix E.3
Special Status Plant Survey
4312 RIALTO STREET ! SAN DIEGO, CA 92 107-1124
619.701.6798 ! INFO @ROCKSBIO.COM
June 17, 2020
Ms. Sophia Habl Mitchell
Sophia Mitchell & Associates, LLC
P.O. Box 1700
Gualala, California 95445
Subject: Special-Status Plant Survey Results for the Barham Drive Residential Project, San Marcos, California
Ms. Habl Mitchell:
This letter report provides the results of special-status plant surveys conducted by Rocks Biological Consulting (RBC) for the proposed Barham Drive Residential Project (project) on May 6 and 19, 2020.
Introduction
The 10.56-acre project site is located in the City of San Marcos, within San Diego County, California (Figure 1). The project site is undeveloped but occurs within a relatively developed area, with residential development to the east and west of the site. The northern project boundary borders East Barham Drive, and the southern project boundary borders undeveloped lands that support Diegan coastal sage scrub and chaparral habitat.
The majority of the project site supports non-native grassland and disturbed vegetation, with smaller areas of native Diegan coastal sage scrub and chaparral habitat along the southern project boundary. Ornamental species are scattered throughout the project site (Figure 2).
Special-status plant species are those that are: 1) Listed by federal and/or state agencies, proposed for listing as threatened or endangered, or candidate species; 2) Considered rare by the California Native Plant Society (CNPS); and/or 3) Listed on the County of San Diego Sensitive Plant List (County 2006). Six special-status plant species have been reported within approximately three miles of the project site and were the focus of the on-site surveys (Figure 3):
•! San Diego thornmint [Acanthomintha ilicifolia; California Rare Plant Rank (CRPR) 1B.1, Federally Threatened (FT), State Endangered (SE)]
•! Thread-leaved brodiaea (Brodiaea filifolia; CRPR 1B.1, FT, SE). •! Spreading navarretia (Navarretia fossalis; CRPR 1B.1, FT) •! San Diego button-celery [Eryngium aristulatum var. parishii; CRPR 1B.1, Federally Endangered (FE), SE]
•! Del Mar manzanita (Arctostaphylos glandulosa ssp. crassifolia; CRPR 1B.1, FE) •! Wart-stemmed ceanothus (Ceanothus verrucosus; CRPR 2B.2) ROCKS
BIOLOGICAL CONSULTING
S. Habl Mitchell June 17, 2020 Page 2 of 4 Methods Special-status plant surveys were conducted within the project site two times in spring 2020 to maximize detection of spring annual and bulb species, first on May 6, 2020 and then on May 20, 2020. Surveys were conducted in accordance with Protocols for Surveying and Evaluating Impacts to Special Status Plant Populations and Natural Communities (California Department of Fish and Wildlife 2018). Biologists walked transects throughout the survey area and were prepared to map special-status plant occurrences using handheld ArcGIS Collector. During surveys all vascular plant species on the site were identified to species, subspecies, or varietal level (Appendix A). Reference populations were visited to determine flowering status and appropriate survey timing for the target special-status plant species with narrow windows of observation. REFERENCE SITE VisitS Several reference sites were visited to ensure appropriate timing for on-site surveys of annual and short-lived bulb species. These included: 1) A San Diego thornmint population at Los Peñasquitos Preserve in Mira Mesa on May 19, 2020; 2) Two thread-leaved brodiaea populations, one at the Taylor Preserve in Vista on May 13, 2020, and one at the San Marcos Baldwin Preserve on May 13, 2020; and 3) Spreading navarretia and San Diego button celery populations at the Otay Lakes Preserve in Otay Ranch on May 14, 2020. The Los Peñasquitos Preserve thornmint population, located approximately 20 miles south of the project site, was flowering during the visit (Appendix B). Given the confirmed presence, it is assumed that populations on the project site would have been observable during on-site surveys on May 6 or May 19, 2020. The Taylor Preserve and Baldwin Preserve thread-leaved brodiaea populations, located approximately 11 miles northwest of the project site and four miles northwest of the site, respectively, were flowering during the May 13, 2020 visits (Appendix B). Given the confirmed presence, it is assumed that populations on the project site would have been observable during this confirmed flowering time. The Otay Lakes Preserve spreading navarretia and San Diego button celery populations, located approximately 50 miles south of the project site, were identifiable during the visit (Appendix B). Given the confirmed presence, it is assumed that populations on the project site would have being observable during this time. Results Survey results for San Diego thornmint, thread-leaved brodiaea, spreading navarretia, San Diego button celery, Del Mar manzanita and wart-stemmed ceanothus were all negative on the project site. No incidental sightings of any other non-target special-status plant species were observed during surveys.
S. Habl Mitchell June 17, 2020 Page 3 of 4
Please don’t hesitate to contact me with any questions or concerns at [email protected] or (619) 701-6798. Sincerely, Brenda Bennett Senior Biologist Enclosed Figure 1: Location Figure 2: Biological Resources Figure 3: CNDDB Plants (1 and 3 mile radius) Attachment A: Plant Species Observed Attachment B: Photo Log S. Habl Mitchell June 17, 2020 Page 4 of 4 References California Department of Fish and Wildlife. 2018. Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Sensitive Natural Communities. State of California, California Natural Resources Agency, Department of Fish and Wildlife. March 20. California Native Plant Society (CNPS), Rare Plant Program. 2020. Inventory of Rare and Endangered Plants of California (online edition, v8-03 0.39). http://www.rareplants.cnps.org County of San Diego (County). 2006. County of San Diego Sensitive Plant. Updated September 2006. Holland, R. F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California. Unpublished document, California Department of Fish and Game, Natural Heritage Division. Sacramento, CA. Jepson Flora Project (eds.) 2020. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/ (accessed May 20, 2020) Johnson, Leigh A. 2013. Navarretia fossalis, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=34450 Miller, John M. 2012. Acanthomintha ilicifolia, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=11725 Parker, V. 2012. Arctostaphylos glandulosa ssp. crassifolia, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=49169 Pires, J. 2019. Brodiaea filifolia, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=16144 Preston, Robert E. 2012. Eryngium aristulatum var. parishii, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=58847 Wilken, Dieter H. 2016. Ceanothus verrucosus, in Jepson Flora Project (eds.) Jepson eFlora. Accessed on June 14, 2020. http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=18506 Borden Rd
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BIOLOGICAL CONSULTING
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CHAP - Chaparral
DCSS - Diegan Coastal Sage Scrub
DCSS-B - Diegan Coastal Sage Scrub-Baccharis Dominated
DEV - Developed
DIS - Disturbed
NNG - Non-Native Grassland
ORN - Ornamental
RUD - Ruderal
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BIOLOGICAL CONSULTING
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Aerial Photo: Nearmap 2019
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wart-stemmed ceanothus
spreading navarretia
felt-leaved monardella
San Diego button-celery
southern tarplant
sea dahlia
Robinson's
pepper-grass
Parry's tetracoccus
Orcutt's brodiaea
Parry's tetracoccus
Del Mar manzanita
Nuttall's scrub oak
San Diego thorn-mint
summer holly
felt-leaved monardella
San Diego thorn-mint
wart-stemmed ceanothus
Del Mar manzanita
Encinitas
baccharis
decumbent goldenbushwart-stemmed ceanothus California adolphia thread-leaved brodiaea
Encinitas baccharis
San Diego marsh-elder
Orcutt's brodiaea
Del Mar manzanita
wart-stemmed ceanothus
Encinitas baccharis
Orcutt's brodiaea
wart-stemmed ceanothus
Encinitas baccharis
Ramona horkelia
Encinitas baccharis
Orcutt's brodiaea
summer holly
spreading navarretia
summer holly
Nuttall's scrub oak
Nuttall's scrub oak
Orcutt's brodiaea
thread-leaved brodiaea
summer holly
summer holly
summer holly
summer holly
summer holly
San Diego thorn-mint
summer holly
Ramona horkelia
Orcutt's brodiaea
Orcutt's brodiaea
Orcutt's brodiaea
Orcutt's brodiaea
southern tarplant
thread-leaved brodiaea
Encinitas baccharis
Encinitas baccharis
Encinitas baccharis
Lakeside ceanothus
Rainbow manzanita
summer holly
San Diego thorn-mint
San Diego marsh-elder
San Diego button-celery
wart-stemmed ceanothus
wart-stemmed ceanothus
wart-stemmed ceanothus
California adolphia
California adolphia
summer holly
Orcutt's brodiaea
San Diego thorn-mint
summer holly
thread-leaved brodiaea
thread-leaved brodiaea
California adolphia
summer holly
Parry's tetracoccus
San Diego sagewort
wart-stemmed ceanothus
summer holly
summer holly
summer holly
summer holly
summer holly
Orcutt's brodiaea
San Diego button-celery
Orcutt's brodiaea
Orcutt's brodiaea
thread-leaved brodiaea
Project Boundary
1-mile Buffer
3-mile Buffer
CNDDB Plants ROCKS
BIOLOGICAL CONSULTING
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CNDDB Plants
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BARHAM RESIDENTIAL
Source: CDFW; USGS 7.5' Quadrangles
(San Marcos, Rancho Santa Fe,
Valley Center, Escondido)
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Attachment A Plant Species Observed Family Common Name Scientific Name Plants Adoxaceae Blue Elderberry Sambucus nigra ssp. caerulea Aizoaceae Hottentot-Fig Carpobrotus edulis * Amaranthaceae White Tumbleweed Amaranthus albus * Anacardiaceae Laurel Sumac Malosma laurina Anacardiaceae Peruvian Pepper Tree Schinus molle * Anacardiaceae Brazilian Pepper Tree Schinus terebinthifolius * Anacardiaceae Western Poison-Oak Toxicodendron diversilobum Apiaceae American Bowlesia Bowlesia incana Apiaceae Rattlesnake Weed Daucus pusillus Apiaceae Sweet Fennel Foeniculum vulgare * Apiaceae Pacific Sanicle Sanicula crassicaulis Apocynaceae Narrow-Leaf Milkweed Asclepias fascicularis Arecaceae Mexican Fan Palm Washingtonia robusta * Asparagaceae Florist's-Smilax Asparagus asparagoides * Asteraceae Western Ragweed Ambrosia psilostachya Asteraceae Coastal Sagebrush Artemisia californica Asteraceae Coyote Brush Baccharis pilularis ssp. consanguinea Asteraceae Italian Thistle Carduus pycnocephalus ssp. pycnocephalus* Asteraceae Bachelor's Button Centaurea cyanus * Asteraceae Tocalote Centaurea melitensis * Asteraceae California Sand-Aster Corethrogyne filaginifolia var. filaginifolia Asteraceae Australian Brass-Buttons Cotula australis * Asteraceae Fascicled Tarweed Deinandra fasciculata Asteraceae Stinkwort Dittrichia graveolens * Asteraceae Flax-Leaf Fleabane Erigeron bonariensis * Asteraceae Horseweed Erigeron canadensis Asteraceae Asthmaweed Erigeron sumatrensis * Asteraceae Long-Stem Golden-Yarrow Eriophyllum confertiflorum var. confertiflorum Asteraceae Desert Cudweed Gamochaeta stagnalis * Asteraceae Treasure Flower Gazania linearis * Asteraceae Garland/Crown Daisy Glebionis coronaria * Asteraceae Southern Sawtooth Goldenbush Hazardia squarrosa var. grindelioides Attachment A-2
Family Common Name Scientific Name Asteraceae Crete Hedypnois Hedypnois cretica * Asteraceae Bristly Ox-Tongue Helminthotheca echioides * Asteraceae Telegraph Weed Heterotheca grandiflora Asteraceae Smooth Cat's Ear Hypochaeris glabra * Asteraceae Spreading Goldenbush Isocoma menziesii var. menziesii Asteraceae Prickly Lettuce Lactuca serriola * Asteraceae Narrow-Leaf Cottonrose Logfia gallica * Asteraceae Fragrant Everlasting Pseudognaphalium beneolens Asteraceae California Everlasting Pseudognaphalium californicum Asteraceae Fragrant Everlasting Cudweed Pseudognaphalium luteoalbum * Asteraceae Cotton-Batting Plant Pseudognaphalium stramineum Asteraceae Slender Woolly-Marbles Psilocarphus tenellus Asteraceae California Chicory Rafinesquia californica Asteraceae Common Groundsel Senecio vulgaris * Asteraceae Milk Thistle Silybum marianum * Asteraceae Prickly Sow-Thistle Sonchus asper ssp. asper * Asteraceae Common Sow-Thistle Sonchus oleraceus * Asteraceae Everlasting Nest-Straw Stylocline gnaphaloides Asteraceae Common Dandelion Taraxacum officinale * Asteraceae Greenthread Thelesperma sp.* Boraginaceae Rigid Fiddleneck Amsinckia menziesii Boraginaceae Minute-Flower Johnstonella Johnstonella micromeres Boraginaceae Popcornflower Plagiobothrys collinus Brassicaceae Turnip, Field Mustard Brassica rapa * Brassicaceae Sahara Mustard Brassica tournefortii * Brassicaceae Short-Pod Mustard Hirschfeldia incana * Brassicaceae Lesser Wart-Cress Lepidium didymum * Brassicaceae Wild Radish Raphanus sativus * Brassicaceae Charlock Sinapis arvensis * Brassicaceae London Rocket Sisymbrium irio * Brassicaceae Hare's-Ear Cabbage Sisymbrium orientale * Campanulaceae Small Venus Looking-Glass Triodanis biflora Caryophyllaceae Mouse-Ear Chickweed Cerastium glomeratum * Caryophyllaceae Four-Leaf Allseed Polycarpon tetraphyllum ssp. tetraphyllum * Attachment A-3
Family Common Name Scientific Name Caryophyllaceae Dwarf/Sticky Pearlwort Sagina apetala Caryophyllaceae Western Pearlwort Sagina decumbens ssp. occidentalis Caryophyllaceae Common Catchfly Silene gallica * Caryophyllaceae Stickwort, Starwort Spergula arvensis * Caryophyllaceae Common Chickweed Stellaria media * Chenopodiaceae Lamb's Quarters Chenopodium album * Chenopodiaceae Nettle-Leaf Goosefoot Chenopodium murale * Convolvulaceae South Coast Morning-Glory Calystegia macrostegia ssp. intermedia Convolvulaceae Field Bindweed Convolvulus arvensis * Crassulaceae Pygmyweed Crassula connata Crassulaceae Mossy Stonecrop Crassula tillaea * Cucurbitaceae Wild-Cucumber Marah macrocarpa Cyperaceae Cyperus Cyperus sp. Euphorbiaceae Doveweed Croton setiger Euphorbiaceae Spotted Spurge Euphorbia maculata * Euphorbiaceae Petty Spurge Euphorbia peplus * Fabaceae Spanish-Clover Acmispon americanus var. americanus Fabaceae Deerweed Acmispon glaber Fabaceae Grab Lotus Acmispon micranthus Fabaceae Birdfoot Trefoil Lotus corniculatus * Fabaceae Miniature Lupine Lupinus bicolor Fabaceae Red-Flower Lupine Lupinus microcarpus var. microcarpus Fabaceae Yellow Trefoil Medicago lupulina * Fabaceae California Burclover Medicago polymorpha * Fabaceae Indian Sweetclover Melilotus indicus * Fabaceae Rose Clover Trifolium hirtum * Fabaceae Crimson Clover Trifolium incarnatum * Fabaceae Maiden Clover Trifolium microcephalum Fabaceae Common Vetch Vicia sativa ssp. nigra * Gentianaceae Canchalagua Zeltnera venusta Geraniaceae Long-Beak Filaree/Storksbill Erodium botrys * Geraniaceae Red-Stem Filaree/Storksbill Erodium cicutarium * Geraniaceae White-Stem Filaree/Storksbill Erodium moschatum * Geraniaceae Cut-Leaf Geranium Geranium dissectum * Attachment A-4
Family Common Name Scientific Name Hydrophyllaceae Common Eucrypta Eucrypta chrysanthemifolia var. chrysanthemifolia Iridaceae Blue-Eyed-Grass Sisyrinchium bellum Juncaceae Toad Rush Juncus bufonius var. bufonius Lamiaceae Henbit Lamium amplexicaule * Lamiaceae Horehound Marrubium vulgare * Lamiaceae Black Sage Salvia mellifera Lythraceae Grass Poly Lythrum hyssopifolia * Malvaceae Cheeseweed Malva parviflora * Meliaceae China Berry Melia azedarach * Montiaceae Red Maids Calandrinia menziesii Montiaceae Narrow-Leaf Miner's-Lettuce Claytonia parviflora ssp. parviflora Montiaceae Miner's lettuce Claytonia perfoliata Myrsinaceae Scarlet Pimpernel Anagallis arvensis * Onagraceae Summer Cotton Weed Epilobium brachycarpum Onagraceae Willow Herb Epilobium ciliatum ssp. ciliatum Onagraceae Beautiful Evening-Primrose Oenothera speciosa * Oxalidaceae Creeping Wood-Sorrel Oxalis corniculata * Oxalidaceae Bermuda-Buttercup Oxalis pes-caprae * Papaveraceae California Poppy Eschscholzia californica Phrymaceae Coast Monkey Flower Diplacus puniceus Plantaginaceae Large Blue Toadflax Nuttallanthus texanus Plantaginaceae Prairie Plantain Plantago elongata Plantaginaceae Corn Speedwell Veronica arvensis * Platanaceae Western Sycamore Platanus racemosa Poaceae Giant Reed Arundo donax * Poaceae Slender Wild Oat Avena barbata * Poaceae Wild Oat Avena fatua * Poaceae Purple False Brome Brachypodium distachyon * Poaceae Quaking Grass Briza minor * Poaceae Rescue Grass Bromus catharticus var. catharticus * Poaceae Ripgut Grass Bromus diandrus * Poaceae Soft Chess Bromus hordeaceus * Poaceae Red Brome Bromus rubens * Poaceae African Fountain Grass Cenchrus setaceus * Attachment A-5
Family Common Name Scientific Name Poaceae Selloa Pampas Grass Cortaderia selloana * Poaceae Bermuda Grass Cynodon dactylon * Poaceae Salt Grass Distichlis spicata Poaceae Panic Veldt Grass Ehrharta erecta * Poaceae Gray's Fescue Festuca microstachys Poaceae Rat-Tail Fescue Festuca myuros * Poaceae Perennial Rye Grass Festuca perennis * Poaceae Nit Grass Gastridium phleoides * Poaceae Mediterranean Barley Hordeum marinum ssp. gussoneanum * Poaceae Glaucous Barley Hordeum murinum ssp. glaucum * Poaceae Little-Seed Canary Grass Phalaris minor * Poaceae Annual Blue Grass Poa annua * Poaceae Annual Beard Grass Polypogon monspeliensis * Poaceae Purple Needle Grass Stipa pulchra Polygonaceae Knotweeed Polygonum aviculare * Polygonaceae Curly Dock Rumex crispus * Portulacaceae Common Purslane Portulaca oleracea * Rhamnaceae Spiny Redberry Rhamnus crocea Rosaceae Western Lady's Mantle Aphanes occidentalis Rubiaceae Common Bedstraw Galium aparine Salicaceae Arroyo Willow Salix lasiolepis Scrophulariaceae Slender Myoporum Myoporum parvifolium * Solanaceae Tree Tobacco Nicotiana glauca * Solanaceae Parish's Nightshade Solanum parishii Tamaricaceae Athel Tamarix aphylla * Urticaceae Dwarf Nettle Urtica urens * Zygophyllaceae Puncture Vine Tribulus terrestris * *non-native species ! Attachment B Photograph Log
Appendix B-1
Photo 1: Acanthomintha ilicifolia in bloom at Los Peñasquitos Preserve, May 19, 2020.
Photo 2: Acanthomintha ilicifolia in bloom at Los Peñasquitos Preserve, May 19, 2020.
Attachment B-2
Photo 3: Brodiaea filifolia in bloom at Taylor Preserve, May 13, 2020.
Photo 4: Brodiaea filifolia in bloom at Taylor Preserve, May 13, 2020.
Attachment B-3
Photo 5: Navarretia fossalis at Otay Lakes Preserve, May 14, 2020.
Photo 6: Eryngium aristulatum var. parishii at Otay Lakes Preserve, May 14, 2020.