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Executive Summary Level of Potential Impacts Significance Mitigation Measures or regional plans, policies, or regulations, or by the California Species. Coverage involves minimizing habitat impacts through implementation of Department of Fish and Game or the U.S. Fish and Wildlife Service? Incidental Take Minimization Measures and payment of fees for conversion of lands that may provide habitat for SJMSCP Covered Species.These fees are then used to preserve and/or create habitat in preserves to be managed in perpetuity. Coverage for a Project includes incidental take authorization in the form of an ITP. Coverage under the SJMSCP would fully mitigate all habitat impacts on SJMSCP Covered Species. California Tiger Salamander This species is covered under the SJMSCP.The following measures would be implemented in accordance with the SJMSCP(see Section 5.2.4.6)and as best management practices to mitigate impacts: A qualified biologist shall conduct preconstruction surveys prior to(or,for some Incidental Take Minimization Measures,during)ground-disturbing activities to determine if SJMSCP Covered Species are present and/or verify that the appropriate Incidental Take Minimization Measures have been implemented, as specified in the conditions of Project approval(see SJMSCP, Section 5.2.2.1 b).The results of the preconstruction surveys shall be submitted to the implementing agency prior to start of construction. Before Project construction, and under the direction of a qualified biologist,a wildlife exclusion fence shall be installed at strategic locations(e.g.,where a work area occurs within 500 feet of suitable breeding habitat).The exclusion fence will remain in place and be maintained for the duration of ground disturbance.The wildlife exclusion fence will be tall enough to discourage dispersal of CTS into active work areas.Any damage or gaps in the wildlife exclusion fence will be repaired immediately during routine inspections. Pools shall be retained, and appropriate pool hydrology shall be maintained to enable successful metamorphosis of larvae to occur but shall not allow for non- native aquatic predators. Small mammal burrows and other suitable estivation habitat(e.g., underground holes,cracks,or niches)shall be retained in adjacent upland habitat. For impacts to CTS upland dispersal habitat,compensatory mitigation shall be completed by the Project owner in accordance with the mitigation ratios and requirements in the SJMSCP. Compensatory mitigation shall be provided for permanent impacts at a ratio of 3:1 for natural lands(e.g., non-wetland agricultural rangelands)in accordance with the SJMSCP.Temporary impacts shall be restored to pre-Project conditions.A fee-based approach could be used for compensatory mitigation under the SJMSCP at a fee per acre set in the current SJMSCP fee schedule for natural lands(SJCOG 2022).Alternatively,credits at an agency approved mitigation bank if available for purchase or a habitat Griffith Energy Storage Project ES-9 Tetra Tech/SCH2O22120675 Draft Environmental Impact Report August 2023