2025-041 - Certifing Final Supplemental Enviromental Impact for The Village

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5.3 GEOLOGY AND SOILS Threshold G-9(ii): The Project would not directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: strong seismic ground shaking, with the implementation of mitigation. Findings: The City finds that changes or alterations have been required in, or incorporated into, the Project, which avoid or substantially lessen the significant environmental effect as identified in the Final Supplemental EIR. Specifically, the City finds that the following mitigation measures shall be implemented to reduce potentially significant geological impacts resulting from the Project (Draft Supplemental EIR, p. 4.4-11). Project-Specific MM G-1: Incorporation of and Compliance with a Design-Level Geotechnical Investigation. A final design-level geotechnical investigation that complies. with all applicable state and local code requirements shall be prepared for each project structure by a qualified, California-licensed geotechnical engineer consistent with the California Building Code and City of Santa Ana requirements applicable at the time of issuance of grading or construction permits. The final design-level geotechnical investigation shall include recommendations related to site grading and earthwork, fill materials, compaction, foundations, dewatering, and other structural elements. The report recommendations shall be included in construction specifications and permits, approved by the City's Building and Safety Division, and confirmed through on-site Inspections. Project-Specific MM G-2: Implementation of Geotechnical Recommendations. Project plans, grading specifications, and construction permitting shall incorporate site-specific earthwork and ground improvement requirements related to seismic ground shaking, liquefaction, settlement, collapse, subsidence, and expansive soils consistent with the California Building Code and City of Santa Ana requirements applicable at the time of issuance of grading or construction permits as stated in the final design level geotechnical investigation and approved by the City's Building and Safety Division. This shall include recommendations related to site grading and earthwork, fill materials, compaction, foundations, dewatering, and other structural elements. Additionally,the City finds that the Project will implement regulatory requirements RR G-1 through RR G-3 (listed above). (Draft Supplemental EIR, pp. 4.4-3—4.4-4.) Explanation of the Rationale: The rationale and facts supporting the above finding are fully developed in Section 4.4, Geology and Soils, pages 4.4-10 through 4.4-12 of the Draft Supplemental EIR. The following presents a summary of that rationale: One of the primary seismic hazards at the Project site is ground shaking due the Project site's proximity to the San Joaquin Hills Blind Thrust Fault and the Newport-Inglewood Fault. Consistent with the GPU PEIR, the Project would be designed and constructed to meet or exceed current design standards as found in the latest California Building Code(CBC)and other applicable local, state, and federal codes to minimize impacts related to strong seismic ground shaking. Resolution No. 2025-041 Page 74 of 140