SFPUC 2001 Alameda Watershed Management Plan

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III. ENVIRONMENTAL SETTING AND IMPACTSE. NATURAL RESOURCESSpecial-Status Wildlife SpeciesTable III.E-3 lists special-status wildlife species that are known to occur on the Watershed or thathave a high or moderate potential to occur based on the distance to the nearest documentedoccurrence and habitat requirements. Appendix IX.B includes a list of all special-status speciesthat are known to occur, or with the potential to occur in the Watershed vicinity. These listswere compiled using the California Diversity Data Base (CDFG, 1998) search by quadrangle(i.e., La Costa Valley, Calaveras Reservoir, Mount Day and Mendenhall Springs quadrangles)and other data sources (i.e., Environmental Science Associates, 1994; Stebbins, 1985; andEDAW, Inc., 1998). Eight of the species have formal listings as endangered or threatened underthe California Endangered Species Act and Federal Endangered Species Act. These species areBay checkerspot butterfly, Callipe silverspot butterfly, myrtle silverspot butterfly, California redleggedfrog, Alameda whipsnake, Aleutian Canada goose, bald eagle, and San Joaquin kit fox. Acomprehensive special-status species survey has not been conducted on the Watershed.However, three species—California red-legged frog, Aleutian Canada goose, and bald eagle—have been confirmed as present, at least seasonally, in the Watershed. There is a high potentialfor Alameda whipsnake to occur and moderate potential for Bay checkerspot butterfly, Callipesilverspot butterfly, myrtle silverspot butterfly, and San Joaquin kit fox to occur. A descriptionof each of these special-status species follows.Central California coast steelhead (Oncorhynchus mykiss) is federally threatened and exhibitsone of the most complex life histories of any salmonid species. The species may be anadromous,migrating between freshwater and saltwater, or freshwater residents, which reside entirely infreshwater. Resident forms are referred to as “rainbow trout,” while anadromous forms arereferred to as “steelhead.” This species migrates to marine waters after spending one or moreyears in freshwater. They typically reside in marine waters two to three years, prior to returningas four or five year olds to their natal stream to spawn. California coastal steelhead wereproposed for listing by the U.S. Fish and Wildlife Service in 1996, and the status of the centralCalifornia population was declared threatened in 1997. Steelhead have historically occurredwithin the Watershed, i.e., Alameda Creek, Calaveras Creek, and Arroyo Hondo Creek,(Environmental Science Associates, 1994) prior to the construction of permanent fish passagebarriers. Due to a downstream impoundment in Alameda Creek, this stream is not accessible tosteelhead. Lower Alameda Creek contains a small population of steelhead, which is currentlyknown to extend upstream to a barrier associated with the Bay Area Rapid Transit (BART)tracks in Fremont.Bay checkerspot butterfly (Euphydryas editha bayensis). This species is federally threatenedand is restricted to isolated patches of native grasslands on serpentine soil which support anabundance of the larval food plants, namely Orthocarpus densiflorus and Plantago erecta.North-facing slopes are usually favored, except in wet years when south-facing slopes tend to bepreferred. Several plants provide nectar for adult Bay checkerspot butterflies, includingLasthenia cryostoma, Layia platyglossa, Linanthus androsaceus, and Lomatium sp. Baycheckerspot butterfly populations are known from similar habitat to the south of CalaverasReservoir. Further studies would be required to determine species presence and population sizein the Watershed.NOP 96.223E: Alameda Watershed Management Plan III.E-17 ESA / 930385January 2001
III. ENVIRONMENTAL SETTING AND IMPACTSE. NATURAL RESOURCESTABLE III.E-3SPECIAL-STATUS ANIMAL SPECIESPOTENTIALLY OCCURRING IN THE ALAMEDA WATERSHEDCommon nameScientific nameListingStatusUSFWS/CDFGHabitatRequirementsPotential toOccur Withinthe WatershedPeriod ofIdentificationInvertebratesOpler’s longhorn mothAdella oplerellaSerpentine phalangidCalcina serpentineaFSC/-- Serpentine grasslands High Potential SpringFSC/-- Serpentine rocks and barrens High Potential Fall-WinterBay checkerspot butterflyEuphydryas editha bayensisFT/-- Serpentine grasslands ModeratePotentialMarch-MayRicksecker’s water scavenger beetleHydrochara rickseckeriFSC/--Found in freshwater ponds, shallowwater of streams marshes and lakesModeratePotentialJanuary-JulyCurved-foot hygrotus diving beetleHygrotus curvipesFSC/-- Found in vernal pools and alkali flats ModeratePotentialJanuary-JulyUnsilvered fritillary butterflySpeyeria adiaste adiasteFSC/--Found in native grasslands with Violapenduculata as larval food plantModeratePotentialSpringCallipe silverspot butterflySpeyeria callippe callippeFE/--Found in native grasslands with Violapeduculata as larval food plantModeratePotentialSpringMyrtle silverspot butterflySpeyeria zerene myrtleaeFE/--Found in native grasslands with Violapeduculata as larval food plantModeratePotentialSpringAmphibiansCalifornia tiger salamanderAmbystoma californienseFC/CSCSeasonal freshwater ponds with littleor no emergent vegetationHigh PotentialNovember-MayCalifornia red-legged frogRana aurora draytoniiFT/CSCFreshwater ponds and slow streamswith emergent vegetation for eggattachmentHigh PotentialApril-JuneFoothill yellow-legged frogRana boyliiFSC/CSCStreams with quiet pools absent ofpredatory fishHigh PotentialApril-JuneWestern spadefoot toadScaphipus hammondiiFSC/CSC Floodplains and grassland pools High Potential February-AugustNOP 96.223E: Alameda Watershed Management Plan III.E-18 ESA / 930385January 2001
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San Francisco Planning DepartmentAL
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TABLE OF CONTENTSPageIV.MITIGATION
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TABLE OF CONTENTSPageLIST OF TABLES
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I. SUMMARYcomprehensive set of goal
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I. SUMMARYconstruction of facilitie
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I. SUMMARYOperations and maintenanc
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I. SUMMARYmanagement actions. Addit
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I. SUMMARYlimits and mitigations se
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II. PROJECT DESCRIPTION! to provide
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II. PROJECT DESCRIPTION• southern
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II. PROJECT DESCRIPTION4.0 MANAGEME
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II. PROJECT DESCRIPTIONPolicies WQ3
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II. PROJECT DESCRIPTION! walking of
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II. PROJECT DESCRIPTIONdecisions re
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II. PROJECT DESCRIPTIONraw, untreat
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II. PROJECT DESCRIPTION6.0 PHASING
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II. PROJECT DESCRIPTIONApproximatel
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II. PROJECT DESCRIPTIONC. RELATED P
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II. PROJECT DESCRIPTIONE. ENVIRONME
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II. PROJECT DESCRIPTIONAfter the Ma
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II. PROJECT DESCRIPTIONTABLE II-1 (
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CHAPTER IIIENVIRONMENTAL SETTING AN
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III. ENVIRONMENTAL SETTING AND IMPA
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WaterStoragePitWaterStoragePitWater
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AlamedaCreekNiles Sunol WaterReserv
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IV. MITIGATION MEASURESC. GEOLOGY A
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IV. MITIGATION MEASURES3. In implem
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IV. MITIGATION MEASURESF. AIR QUALI
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IV. MITIGATION MEASURESI. AESTHETIC
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IV. MITIGATION MEASURES2.0 MITIGATI
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V. SIGNIFICANT UNAVOIDABLE ENVIRONM
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CHAPTER VIIALTERNATIVESA. METHODOLO
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VII. ALTERNATIVESTABLE VII-1COMPARA
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VII. ALTERNATIVESTABLE VII-1 (Conti
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VII. ALTERNATIVESWatershed patrols,
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VII. ALTERNATIVESemphasizes ecologi
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VII. ALTERNATIVESunder the preferre
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VII. ALTERNATIVESSan Antonio Creek
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VII. ALTERNATIVESstorage under this
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VII. ALTERNATIVESGeology and Soils.
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VII. ALTERNATIVESthat Alameda Count
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VII. ALTERNATIVESand F propose. Min
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CHAPTER VIIIDRAFT EIR DISTRIBUTION
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IX. APPENDICESAPPENDIX IX.ANOTICE O
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IX. APPENDICESB. SPECIAL-STATUS SPE
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CHAPTER XLIST OF ACRONYMSACWDACWRSA
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X. LIST OF ACRONYMSSRUEBUSFWSUSTsWH
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XI. EIR AUTHORS AND CONSULTANTS; OR
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CHAPTER XIISUMMARY OF COMMENTS AND
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XII. SUMMARY OF COMMENTS AND RESPON
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XII. SUMMARY OF COMMMENTS AND RESPO
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SFPUC 2001 Alameda Watershed Management Plan

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