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Administrative Draft Environmental Impact Report Gill Medical Center Project 1. Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of known fault? 2 Strong seismic ground shaking; 3. Seismic-related ground failure, including liquefaction; or 4. Landslides. Result in substantial soil erosion or the loss of topsoil; Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse; or Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial risks to life or property. 4.9.3.2 Methods of Analysis For the purposes of this DEIR, available USGS and CGS topographical and seismic maps, NRCS soils reports, and other studies that included relevant geologic data, were reviewed, and used to determine whether geological impacts could occur from the construction and operation of the Project. Prior to construction, a site assessment study of the project site would be conducted to characterize specific geotechnical conditions at the site for final design and construction purposes. 4.9.3.3 Project Impacts and Mitigation Measures Impact 4.9-1: The proposed project could expose people or structures to potential substantial adverse effects including the risk of loss, injury, or death involving: rupture of a known earthquake fault, strong seismic ground shaking, seismic-related ground failure, including landslides Impact Determination: less than significant Threshold: Located near an earthquake fault zone, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map, soil that has the potential for landslides. Seismic Ground Shaking The potential for seismic ground shaking in California is expected.As a result of the foreseeable seismicity in California, the State requires special design considerations for all structural improvements in accordance with the seismic design provisions in the California Building Code.These seismic design provisions require enhanced structural integrity based on several risk parameters. Seismic ground shaking at the Project site is expected during the life of the proposed Project.All structures will be built in accordance with the California Building Code's seismic design standards. Geology and Soils 4.9-7 October 2021