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64 program EIR p. 16-1). The Commercial Component site is not within an Alquist-Priolo Earthquake Fault Zone (DTPP program EIR p. 16-1); therefore, there is no known potential for fault rupture on the site. The Commercial Component would not create new impacts or increase impacts, and there is no new information of substantial importance for CEQA purposes. ii) and (iii) The Commercial Component site lies in a seismically active region and is subject to ground shaking from an earthquake along major active regional faults. This is common to virtually all development in the San Francisco Bay Area. Development on the site would be subject to review and approval by the City and shall be designed and constructed in accordance with all applicable seismic standards adopted by the City of Redwood City, including the California Building Code (CBC) and/or California Historical Building Code (CHBC), which require that a site- specific geotechnical investigation be conducted and an accompanying report be prepared by a licensed professional. The site-specific geotechnical report must provide measures to reduce potentially significant geologic hazards (e.g., expansive and corrosive soils, differential settlement, and slope instability). The geotechnical report is subject to City Building Official approval prior to the issuance of grading and building permits (DTPP program EIR p. 16-4). The required contents of the geotechnical report are described in DTPP program EIR Mitigation 16-1 and EIR page 16-6, and also in DTPP Plan-Wide Amendments program SEIR Mitigation GEO-4a and SEIR pages 16-10 and 16-12. Mitigations 16-1 and GEO-4a reiterate the uniformly applicable policies and regulations already adopted by the City. Techniques and standards for effective geotechnical practices are widely known and accepted. Individual measures for specific sites and projects are typically specified at a detailed level of design. The City routinely requires such geotechnical/geologic investigations and specifications, and a significant record exists demonstrating the effectiveness of such design and engineering requirements in adequately addressing potential soil and geologic issues. Under the City’s grading permit and building permit regulations, an individual development project cannot be given final approval without project compliance with geotechnical/geologic requirements. These requirements and related City inspection and verification procedures before project occupancy provide reasonable assurance that the project component will incorporate the necessary design and engineering refinements. A site-specific geotechnical report was prepared for the proposed Commercial Component as required by DTPP program EIR Mitigation Measure 16-1 (Geotechnical Investigation, Proposed Office Building and Teen Center, 901 El Camino Real, Redwood City, California; Rockridge Geotechnical; August 7, 2024). The report provides preliminary conclusions and recommendations regarding the following site-specific geotechnical issues:  shallow groundwater relative to the proposed building foundation and excavation depth; and  providing suitable lateral support and dewatering for the proposed excavation, while minimizing impacts to the surrounding improvements. The above interrelated issues are detailed in the geotechnical report, which also includes the technical data and analysis of one near-surface soil sample and four cone penetration tests (CPTs) performed by Romig on the Commercial Component site on May 31, 2019, and more recent subsurface data gathered by Rockridge Geotechnical from three CPTs and two hand-auger borings, performed on June 15, 202 and June 24, 2022 respectively. The professional, engineering-level discussion of the issues noted above is included in the original report by Rockridge Geotechnical (August 7, 2024). Consistent with DTPP EIR Mitigation Measure 16-1 and DTPP Plan-Wide Amendments SEIR Mitigation Measure GEO-4a, the geotechnical report recommends site-specific solutions to the identified Commercial Component-specific issues and concerns, including:  site seismicity and seismic hazards, including the potential for liquefaction and lateral spreading, and total and differential settlement resulting from liquefaction and/or cyclic densification;  the most appropriate foundation type(s) for the proposed building, including tiedown (soil) anchors to resist hydrostatic uplift;  design criteria for the recommended foundation type(s), including vertical and lateral capacities for each of the foundation types;  estimates of foundation settlement;  design groundwater elevation;  lateral earth pressures for design of retaining walls;  site preparation and grading, including criteria for fill quality and compaction; ATTY/RESO.0031/CC RESO CEQA GUIDELINES (901 EL CAMINO REAL) REV: 04-22-25 VR Page 64 of 148