SR 06:242 - Laserfiche WebLink

expected to fall under the jurisdiction of the U.S. Army Corps of Engineers, the California Department ofFish and Game, and the Regional Water Quality Control Board. Special-Status Plant Species Based on a search of the California Natural Diversity Data Base (CDFG 2004), only two special- status plant species are recorded from the Dublin quadrangle. These include Diablo helianthelIa (Helianthella castanea) and Congdon's tarplant (Centromadia parryi ssp. congdonii), both on the California Native Plant Society's List 18. Suitable habitat for both of these species is present on site. In addition, based on our knowledge of the local flora and the presence of suitable habitat, several other special-status plant species are considered to have at least some potential to occur within the study area. These include Mt. Diablo fairy-lantern (Calochortus pulchellus), big-scale balsamroot (Balsamorhiza macrolepis var. macrolepis), and round-leaved filaree (Erodium macrophyllum), all California Native Plant Society List 18 species. With the exception of Congdon's tarplant, any of these species, if present on site, would be detectable by botanical surveys conducted in springtime. Congdon's tarplant is unlikely to OCCllr on site because it blooms in summer and would have been detectable during our reconnaissance survey. One additional special-staws plant species, Santa Clara red ribbons (Clarkia concinna ssp. automixa), on the California Native Plant Society's List 4, is known from Pleasanton Ridge Regional Park near the end of Kilkare Road, less than two miles south of the study area, Becallse there is at least some suitable habitat for Santa Clara red ribbons on site, the presence of this species cannot be ruled out withollt a botanical survey conducted between April and July. Although none of these species are afforded formal protection under state or federal law, they receive consideration in the California Environmental Quality Act (CEQA) review process. Special-Status Animal Species Based on a review of the Natural Diversity Data Base (CNDDB 2004) and general knowledge of the fauna of the region, four special-status animal species have some potential to occur in the project vicinity. These include Burrowing owl (Athene cunicularia hypugaea), a California Species of Special Concern and a Federal Species of Concern, California red-legged frog (Rana aurora draytonii), a California Species of Special Concern and federally-listed Threatened, and California tiger salamander (Ambystoma califomiense), a California Species of Special Concern and recently listed throughout its range as Threatened under the Federal Endangered Species Act (Effective September 3,2004; USFWS 2004). Although the site does not support sllitable breeding habitat for California tiger salamander or Califomia red-legged frog, the study area provides marginally suitable dispersal and aestivation habitat for these species if breeding habitat is present in the vicinity of the study area. Alameda whipsnake have been reported approximately one mile north of the study area, and California red-legged frog have been reported approximately 1.5 miles west of me stuay area. 1'<0 Durrowmg OWlS or DUlTowmg OWl SIgn ~l.e. learners, pelletS, wnnewasn) was observed within the study area; however, suitable nesting habitat in the form of active ground squirrel burrows is present throughout the study area, including grasslands, along roads and fence lines, and within and along the drainages. S:\Projecb\Equily EnterprisdJ?eportS\DueDiligenceEquity 09202004.doc 4