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 2022 California Building Code (CBC) site class and design spectral response acceleration parameters;  corrosivity of the near-surface soil and the potential effects on buried concrete and metal structures and foundations; and  construction considerations. The geotechnical report (p. 11) concludes: "On the basis of the results of our geotechnical investigation, we conclude the proposed improvements can be constructed as planned, provided the recommendations presented in this report are incorporated into the project component plans and specifications and properly implemented during construction.” The current geotechnical report prepared for the project component, including any subsequent revisions, and any subsequent detailed excavation, earthwork, and foundation plans are subject to City review and approval. In collaboration with a California Registered Geotechnical Engineer, the appropriate City staff would also observe onsite construction work. These conclusions are consistent with the California Building Code (CBC), the California Historical Building Code (CHBC), and both the DTPP program EIR (Chapter 16, Geology and Soils) and the DTPP Plan-Wide Amendments program SEIR (Chapter 16, Geology and Soils). iv) The project component site is relatively flat; no impacts from landslides are anticipated. The Downtown Precise Plan program EIR concluded that while the DTPP area could be subject to moderate to high susceptibility to ground shaking and liquefaction, the City’s standard grading and building permit regulations provide reasonable assurances that individual projects would incorporate the design and engineering refinements necessary to reduce the potential impact of DTPP-facilitated development to less than significant, requiring no additional mitigation. The DTPP Plan-Wide Amendments program SEIR affirmed this conclusion. The site-specific geotechnical report prepared for the project component, and any subsequent revisions, is subject to City review and approval, consistent with the CBC and/or CHBC, and both the DTPP program EIR (Chapter 16, Mitigation Measure 16-1) and the DTPP Plan-Wide Amendments program SEIR (Chapter 16, Geology and Soils) findings. Because the 1900 Broadway project component would have a less-than-significant impact with compliance with the regulatory framework and incorporation of standard project conditions, the project would be consistent with the analysis within the DTPP EIR and Plan-Wide Amendments SEIR. The 1900 project component would not create new impacts or increase impacts and there is no new information of substantial importance for CEQA purposes. b. The DTPP EIR found that the DTPP would create a potentially significant impact as it relates to erosion and sedimentation due to the ground disturbance associated with future developments, requiring mitigation. DTPP EIR Mitigation Measure 16-3 was identified to reduce this impact to a less-than-significant level by requiring the preparation of an erosion control plan for all future developments involving grading 10,000 square feet or more, consistent with the state Construction General Permit and its required SWPPP. The DTPP Plan-Wide Amendments program SEIR (pp. 16-10 and 16-11) concurred with the DTPP EIR conclusion and includes Mitigation Measure GEO-2, which restates Mitigation Measure 16-3 from the DTPP Final EIR with minor text revisions (“clarifying amendments”). This mitigation measure, which shall be required as a condition of approval for the project, shall be implemented during construction and would reduce the potentially significant impacts on soil erosion and sedimentation to a less-than-significant level. The project component will be subject to DTPP program EIR Mitigation Measure 16-3, which shall be required as a condition of project approval. Mitigation Measure 16-3 requires the applicant to prepare an erosion control plan subject to City approval and consistent with the required San Mateo County Stormwater Pollution Prevention Plan (SWPPP) Best Management Practices. As a result, the proposed project component would have a less than significant impact. This project component is consistent with the analysis in the EIR/SEIR because it would not create new impacts or increase impacts and there is no new information of substantial importance for CEQA purposes. c. The DTPP Final EIR concluded that the risks associated with unstable geologic units or soil are low, but that effects of strong seismic ground shaking and liquefaction would present a potentially significant impact. The DTPP Plan- Wide Amendments program SEIR concluded that complying with the regulatory framework would ensure that new structures would not be susceptible to the effects of unstable geologic units and soils, so the impacts would be less than significant. No changes to geologic substructures are expected to occur as a result of project component implementation. As described in item (a) above, the proposed project component would comply with all applicable local and State codes and regulations, and project component design would incorporate City-approved geotechnical recommendations for site development. This impact is considered less than significant. All grading plans are subject to City review and approval. ATTY/RESO.0070/CC RESO 1900 BROADWAY (CEQA) - EXHIBIT 1 - CEQA CONSISTENCY CHECK LIST REV: 10-23-24 VR Page 60 of 135