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City of Pleasanton—Hidden Canyon Residences and Preserve Draft EIR Biological Resources FirstCarbon Solutions 3.3-31 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-03 Bio Resources.docx • Define and provide for a financial mechanism such as a non-wasting endowment or an assessment district that funds open space management into perpetuity. MM BIO-1c East Alameda County Conservation Strategy-specific Avoidance and Minimization Measures for Alameda Whipsnake • No monofilament plastic shall be used for erosion control. • Barrier fencing may be used to exclude focal reptiles. Barrier fencing shall be removed within 72 hours of completion of work. • Construction crews or on-site Biological Monitor shall inspect open trenches in the morning and evening for trapped reptiles. • Ground disturbance in suitable habitat shall be minimized. • A United States Fish and Wildlife Service (USFWS) and California Department of Fish and Wildlife- (CDFW-) approved Biological Monitor shall be present for all ground-disturbing activities in suitable habitat. • A qualified Biologist possessing a valid Endangered Species Act Section 10(a)(1)(A) permit or Service approved under an active biological opinion, and approved by the CDFW shall be contracted to trap and to move reptiles to nearby suitable habitat if listed reptiles are found inside fenced area. Compensation Clustering and siting of the project has also allowed for in-perpetuity preservation of 104.6 acres of open space of similar habitat quality to the approximately 24 acres that would be impacted by the project. This amount of open space would more than sufficiently compensate for any loss of Alameda whipsnake upland habitat. Additionally, Focal Species Impact/Mitigation Scoring Sheets located in Appendix E of the East Alameda County Conservation Strategy (EACCS) were used as part of the assessment for suitability of mitigation lands for Alameda whipsnake. Standardized mitigation ratios for Alameda whipsnake, according to Table 3-9 in the EACCS, are as follows: 1. If the development area is within critical habitat and the mitigation area is within critical habitat, and both are within the same Recovery Unit (both areas in this case are within Recovery Unit 3) the mitigation ratio is 3:1. 2. If the development area is outside of critical habitat but inside a Recovery Unit and the mitigation area is outside critical habitat but inside the same recovery unit, the mitigation ratio is 3:1. 3. If the development area is outside of critical habitat but inside a Recovery Unit and the mitigation area is inside critical habit and within the same Recovery Unit, 2.5:1. 4. All other types of mitigation would require site-specific agency approval.