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City of Pleasanton—Hidden Canyon Residences and Preserve <br />Biological Resources Draft EIR <br /> <br /> <br />3.3-10 FirstCarbon Solutions <br />https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-03 Bio Resources.docx <br />Scientific Name <br />Common Name <br />Status <br />Habitat Description3 Potential to Occur and Rationale USFWS1 CDFW2 <br />the United States Fish and Wildlife <br />Service (USFWS) for CRLF. The site <br />is within modeled potential upland <br />habitat for CRLF. <br />Reptiles <br />Masticophis <br />lateralis <br />euryxanthus <br />Alameda <br />whipsnake <br />FT ST Ranges from inner coast range in <br />western and central Contra Costa <br />and Alameda counties. Typically <br />occurs in chaparral and scrub <br />habitats with rock outcrops and <br />talus pilings. Also occurs in scrub <br />communities, grasslands, oak, and <br />oak/bay woodlands. <br />Possible: LOA herpetologists found <br />that suitable habitat exists on-site <br />for all life stages of Alameda <br />whipsnake. Rock piles provide <br />hibernacula and food sources, <br />riparian and mixed woodlands <br />occurring on-site provide suitable <br />habitat, and grasslands are adjacent <br />to these woodlands, which may be <br />used for feeding and dispersal <br />habitat. The site is located almost <br />entirely within Critical Habitat <br />designated by the USFWS for <br />Alameda whipsnake. The site is <br />within Alameda whipsnake <br />Recovery Unit 3 mitigation area of <br />the East Alameda County <br />Conservation Strategy (EACCS). <br />Invertebrates <br />Bombus crotchii <br />Crotch’s Bumble <br />bee <br /> SC In California, inhabits open <br />grassland and scrub habitats of <br />the southern 2/3 of California. <br />Historically in, but largely <br />extirpated from the Central Valley. <br />Flight period for queens is late <br />February to late October peaking <br />in April and July; flight period for <br />males and workers is March <br />through September peaking in <br />early July. Constructs nests <br />underground in animal burrows. <br />Overwintering sites are likely in <br />soft soils or in debris or leaf litter. <br />Possible. The site is potentially <br />suitable for the Crotch bumble bee; <br />however, the presence of abundant <br />nectar sources have yet to be <br />assessed. The closest documented <br />observation of this species is more <br />than 3 miles from the site <br />(California Department of Fish and <br />Wildlife [CDFW] 2025). <br />Birds <br />Circus cyaneus <br />Northern harrier <br />— SSC Frequents meadows, grasslands, <br />open rangelands, <br />freshwater emergent wetlands; <br />uncommon in wooded habitats. <br />Possible: Potentially suitable <br />breeding and foraging habitat for <br />this species is present on the site. <br />Aquila <br />chrysaetos <br />Golden eagle <br />— <br />MBTA <br />FP <br />FGC <br />Typically frequents rolling <br />foothills, mountain areas, <br />Possible: While large trees on the <br />site provide breeding habitat for <br />this species, field surveys conducted