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Executive Summary Non-SJMSCP Covered Species Big Tarplant This species is not covered under the SJMSCP. Big tarplant is a focal species in the EACCS.The following measure would be implemented to mitigate impacts in all Project areas: 00 For big tarplant populations that are not within the direct impact area but are located within 50 feet of disturbance,a qualified biologist shall flag a minimum no-disturbance buffer of at least 30 feet around the populations in the field(or other distance as approved by a qualified biologist), and maps shall be provided to on-site staff.These areas shall be avoided during construction if feasible.To delineate the areas of avoidance, a preconstruction survey would be required during the blooming period for this species(July to November)prior to the start of construction. For example, if construction was planned to start in June 2024,the area would be surveyed between July and November 2023 and those results would be used to determine the extent of the population areas. If big tarplant populations cannot be avoided by the Project, a restoration/enhancement plan to reduce impacts to big tarplant shall be prepared by a qualified biologist.The plan shall include the following components as needed:description of Project site, including maps, goals/objectives of the Project;description of the proposed site; implementation plan, including topsoil and/or seed collection and dispersal protocols; maintenance requirements, including weed removal and invasive species management during the monitoring period; monitoring plan; success criteria/performance standards; adaptive management program and remedial measures; and reporting requirements. If permanent impacts occur to big tarplant,the actual areas impacted would be mapped post-construction to quantify the amount of big tarplant impacted and the amount required to be restored.Temporary impacts(i.e., impacts in areas that would be restored to natural conditions)may be mitigated by salvaging topsoil during ground disturbance,storing the soil on-site and protecting it from weed seed dispersal, and then returning the soil horizon to its original profile to keep seeds at the appropriate soil depth.All permanent impacts shall be mitigated at a minimum ratio of 1:1 (1 acre restored for 1 acre impacted)terms are otherwise agreed to with CDFW and USFWS. California Glossy Snake The California glossy snake is not covered under the SJMSCP.The following measure would be implemented to mitigate impacts to this species in all Project areas: Preconstruction surveys for special-status reptiles shall be conducted by a qualified biologist within 14 days prior to the start of construction.The surveys shall cover Griffith Energy Storage Project ES-16 Tetra Tech/SCH2O22120675 Draft Environmental Impact Report August 2023