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City of Pleasanton—Vineyard Avenue Residential Project <br />15183 Consistency Checklist Consistency Checklist <br /> <br />55 <br /> <br />site’s grassland vegetation communities. Therefore, special-status plant <br />species are not anticipated to occur on-site, and development of the <br />proposed project would result in a less-than-significant impact related to <br />special-status plant species. <br />According to the BRA, a total of nine special-status wildlife species are known <br />to occur in the vicinity of the project site, including tricolored blackbird, <br />California tiger salamander (central California Distinct Population Segment <br />[DPS]), pallid bat, burrowing owl, Crotch’s bumble bee, western bumble bee, <br />Townsend’s big-eared bat, American peregrine falcon, and California red- <br />legged frog. Six of the nine foregoing species require specialized habitats <br />that do not occur on-site, including cliffs and large trees, marshes and <br />wetlands, caves or hollow trees, and open grasslands with nectar sources. <br />With respect to the California red-legged frog (Rana draytonii) (CRLF), the <br />closest CNDDB and iNaturalist records occur 2.3 miles from the project site. <br />According to the BRA, the generally accepted dispersal range for CRLF is <br />approximately two miles, which places the project site outside of the <br />dispersal range for the locally extant CRLF population. While technically <br />potentially suitable CRLF upland dispersal habitat occurs on-site, the species <br />is not expected to occur due to excessive distance. Therefore, the BRA <br />concluded that the only special-status wildlife species with the potential to <br />occur on-site include burrowing owl and California tiger salamander. <br />According to the BRA, active ground squirrel colonies occur throughout the <br />project site. The open grassland and on-site ground squirrel burrows could <br />provide the necessary nesting habitat for the species, which is known to <br />occur in the vicinity of the site. Therefore, the BRA concluded that the project <br />site could support breeding burrowing owls. Development of the proposed <br />project could therefore have a substantial adverse effect, either directly or <br />through habitat modifications, on burrowing owl, and a significant impact <br />could occur. <br />With respect to California tiger salamander, the BRA establishes that the <br />project site provides suitable upland dispersal habitat for any individuals of <br />the species within dispersal proximity of suitable breeding habitat. According <br />to the CNDDB query conducted for the site, a suitable breeding pond was <br />reported in 1992 within the Shadow Cliffs Regional Recreation Area (CNDDB <br />Occurrence No. 530). However, the exact location of the pond was not <br />recorded and the record is considered potentially extirpated. Furthermore, <br />according to the BRA, California tiger salamander breeding records do not <br />occur within the generally accepted dispersal range for the species (1.3