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4 Environmental Analysis <br /> 4.5 Cultural Resources <br /> cease and the Alameda County or San Joaquin County (depending on the county where the item <br /> is identified) Coroner would be contacted immediately. If the remains are found to be Native <br /> American as defined by Health and Safety Code, Section 7050.5, the coroner will contact the <br /> NAHC by telephone within 24 hours. <br /> Mitigation: None required. <br /> 4.5.6 Mitigation Measures <br /> The following mitigation measures are recommended to reduce significant impacts to cultural and <br /> tribal resources. <br /> CUL-1. Cultural Resource Worker Education/Training: Prior to Project construction-related, <br /> ground disturbing activities (e.g., vegetation removal, excavation, trenching, grading), a cultural <br /> resource worker education awareness program shall be conducted for Project construction <br /> personnel. A qualified archaeologist pre-approved by San Joaquin County will be retained to <br /> prepare the initial cultural resource briefing of the worker education awareness program prior to <br /> ground disturbing activities. During construction, the training will be provided to all new <br /> construction personnel. The cultural resource training will include: <br /> oo An overview of applicable laws and penalties pertaining to disturbing cultural resources; <br /> oo A brief discussion of the prehistoric and historic regional context and archaeological <br /> sensitivity of the area; <br /> oo Types of cultural resources found in the area; <br /> oo Instruction that Project workers will halt construction if a cultural resource is inadvertently <br /> discovered during construction; and <br /> oo Procedures to follow in the event an inadvertent discovery (Inadvertent Discovery Plan <br /> discussed below) is encountered, including appropriate treatment and respectful behavior <br /> of a discovery (e.g., no posting to social media or photographs). <br /> CUL-2. Inadvertent Discovery of Archaeological Resources During Construction: A <br /> qualified archaeologist pre-approved by San Joaquin County shall prepare an Inadvertent <br /> Discovery Plan for the Project. The Inadvertent Discovery Plan will provide protocols and <br /> notification procedures in the event of an inadvertent discovery. During Project construction (e.g., <br /> ground disturbing activities, such as vegetation removal, excavation, trenching, grading), should <br /> subsurface archaeological resources be discovered, all ground disturbing activities within 50 feet <br /> of the find shall cease and the qualified archaeologist shall be contacted to assess the significance <br /> of the find according to CEQA Guidelines Section 15064.5. If any find is determined to be <br /> significant, the archaeologist shall determine, in consultation with the implementing agencies and <br /> any local consulting Native American groups expressing interest, appropriate avoidance <br /> measures or other appropriate mitigation. Under CEQA Guidelines Section 15126.4(b)(3), <br /> preservation in place shall be the preferred means to avoid impacts to archaeological resources <br /> qualifying as historical resources. Methods of avoidance may include, but shall not be limited to, <br /> Project reroute or redesign, or identification of protection measures, such as capping or fencing. <br /> Consistent with CEQA Guidelines Section 15126.4(b)(3)(C), if it is demonstrated that resources <br /> cannot be avoided, the qualified archaeologist shall develop additional treatment measures, such <br /> as data recovery or other appropriate measures, in consultation with the implementing agency <br /> Griffith Energy Storage Project 4.5-18 Tetra Tech/SCH 2022120675 <br /> Draft Environmental Impact Report August 2023 <br />