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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration 44 • Included in California Native Plant Society’s Inventory of Rare Plants (Rare Plant Rank 1 through 4). A total of 100 special-status wildlife species and 97 special-status plant species were identified in the quadrangle search based on the sources identified in the methodology section. Of those identified, 70 special-status wildlife species and 79 special-status plant species have at least some potential to occur within the respective sensitive wildlife or sensitive plant Study Areas. 3.4.2 Discussion a) Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife, the U.S. Fish and Wildlife Service, or the National Marine Fisheries Service? Less than Significant with Mitigation Incorporated. As discussed above and noted in Appendix A, the Study Area provides potentially suitable habitat for 70 special-status wildlife species and 79 special-status plant species. Ground-disturbing effects would be limited and temporary in nature, and vegetation management would be minimal. The implementation of Mitigation Measures MM AES-1 and AES-2, MM BIO-1 through 20, MM HYD-1, and MM HAZ-1 through 4 will reduce potential impacts to special-status species or modification of potential habitat to Less than Significant with Mitigation Incorporated. Species specific determinations are discussed in more detail below. 3.4.2.1 SPECIAL-STATUS WILDLIFE The following section includes species accounts for each of the special-status wildlife species that has potential to occur (Appendix A) within the Study Area and provides effects determinations relative to the Proposed Project’s anticipated impacts. For all 70 wildlife species with some potential to occur in the Study Area, it was determined that potential impacts relative to the Proposed Project would be Less Than Significant with Mitigation Incorporated. California tiger salamander (Ambystoma californiense) California tiger salamander Central California distinct population segment (DPS) is listed as Threatened under the FESA and as Threatened under the CESA (USFWS 2019a, CDFW 2019a). Critical habitat was finalized for the Central California DPS in 2005. California tiger salamander is a terrestrial mole salamander ranging from three to five inches, snout to vent (SVL), with a broad,