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Findings and Statements Required by the California Environmental Quality Act <br />Redwood City DTPP Plan-Wide Amendments 23 ESA / 202100421.01 <br />Subsequent Environmental Impact Report May 2023 <br />16. Geology and Soils <br />Impact GEO-1: Implementation of the DTPP Plan-Wide Amendments would not directly or <br />indirectly cause potential substantial adverse effects, including the risk of loss, injury, or <br />death involving rupture of a known earthquake fault; strong seismic ground sh aking; <br />seismic-related ground failure, including liquefaction; or landslides. <br />All future development would be subject to the state and local laws in place to ensure that <br />new developments are constructed in accordance with the CBC and are structurally sound. <br />Specifically, all future developments would be required to undergo a geotech nical investigation <br />and submit a geotechnical report prior to construction, which would inform the geotechnical design <br />of all structures to ensure they are able to withstand any impacts from seismic hazards, such as <br />strong ground shaking and liquefaction. Compliance with all applicable state and local laws would <br />ensure that impacts from the proposed DTPP Plan-Wide Amendments would not result in new or <br />more severe impacts related to seismic hazards than the impacts identified in the DTPP Final EIR. <br />Therefore, impacts related to seismic hazards would be less than significant. (Draft SEIR, pp. 16-9 <br />to 16-10.) <br />Impact GEO-3: Implementation of the DTPP Plan-Wide Amendments would not be located <br />on a geologic unit or soil that is unstable, or that would become unstable as a result of the <br />project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, <br />liquefaction or collapse. <br />Risks associated with unstable geologic units or soil are low, however, effects of strong <br />seismic ground shaking and liquefaction would present a potentially significant impact. Compliance <br />with all applicable local and state laws (i.e., the California Building Code [CBC]) would ensure that <br />all future developments within the amended DTPP area would be designed consistent with the CBC, <br />which would ensure that new structures would not be susceptible to the effects of unstable geologic <br />units and soils. The impacts of the proposed DTPP Plan-Wide Amendments would not result in <br />new or more severe impacts related to unstable geologic units than those identified in the DTPP <br />Final EIR. Therefore, the impact would be less than significant. (Draft SEIR, p. 16-11.) <br />Impact GEO-5: Implementation of the DTPP Plan-Wide Amendments would not have soils <br />incapable of adequately supporting the use of septic tanks or alternative waste water disposal <br />systems where sewers are not available for the disposal of waste water. <br />No septic systems would be installed in the amended DTPP area. As future developments <br />would connect to the existing sewer system, there would be a less-than-significant impact related <br />to the suitability of the soils. (Draft SEIR, p. 16-13.)