11 ATTACHMENT 7 - Laserfiche WebLink

^ Based on a search of all relevant sources, 61 special status wildlife species were determined to have the potential to occur on the project site and immediate vicinity, and were evaluated in the habitat assessment. While none of these species has documented occurrences on the project site, potentially suitable habitat at the marginal level or higher for 42 of the 61 species occurs within the project site. ^ Stock ponds provide aquatic habitat that may be used by special status wildlife. These ponds provide breeding habitat for the federal-threatened California tiger salamander and California red-legged frog, and adjacent grasslands with rodent burrows provide needed upland habitat for these species. A California red- legged frog was observed adjacent to one of the stock ponds during an October, 2004 survey, and California tiger salamanders were also found on the project site adjacent to both stock ponds. Suitable upland habitat for both of these species is abundant near these ponds. ^ callippe silverspot butterfly (Speyeria callippe callippe) is afederal-endangered species found in coastal scrub and grassland habitat on the San Francisco peninsula and in certain areas of the East Bay hills. Presence of this species depends on an abundance of its host plant, Johnny-jump-up (Viola pedunculata). Larvae of this species feed on the host plant from March to May and the typical flight season runs from May to July. During a survey conducted in July 2005, two adults thought, by the biologist conducting the survey, to be Speyeria callippe callippe were observed but definitive sup-species identified could not be made. Additional field work will be required to make a conclusive determination. ^ On some of the steeper slopes in the southeast portion of the project site, Diablan sage scrub provides a small amount of habitat for reptile species. Alameda whipsnakes most commonly occur in chaparral habitat and have a moderate potential of occurring at the southern tip of the project site due to suitable habitat availability on and adjacent to the site. ^ The open fields and grasslands on the project site provide suitable foraging habitat for a number of special status bird species, including white-tailed kite, golden eagle, prairie falcon, burrowing owl, and loggerhead shrike. An abundant rodent population provides a solid prey base for eagles and hawks, while also supporting habitat for burrowing owls, which may use the rodent burrows for shelter and nesting. Impacts As stated, the site supports a diverse biology including a variety of animal special - mammal, reptile, birds, and insects. Their potential habitats on the site are mapped in the DEIR. As identified, the proposed development could significantly impact the site's wetland areas unless mitigation measures are implemented. ^ California Tiger Salamander Field surveys for California tiger salamander species began in March, 2005 ending in December, 2005. Species was found on the site adjacent to Pond 1, PUD-33 Page 29 of 59 June 13, 2007