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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration 145 <br />ENVIRONMENTAL ISSUES <br />Potentially <br />Significant <br />Impact <br />Less Than <br />Significant <br />with <br />Mitigation <br />Incorporated <br />Less Than <br />Significant <br />Impact <br />No <br />Impact <br />c) Would the project be located on a <br />geologic unit or soil that is <br />unstable, or that would become <br />unstable as a result of the <br />Proposed Project, and potentially <br />result in on- or off-site landslide, <br />lateral spreading, subsidence, <br />liquefaction, or collapse? <br /> <br />d) Would the project be located on <br />expansive soil, as defined in Table <br />18-1-B of the Uniform Building <br />Code (1994, as updated), creating <br />substantial direct or indirect risks <br />to life or property? <br /> <br />e) Would the project have soils <br />incapable of adequately <br />supporting the use of septic tanks <br />or alternative waste water disposal <br />systems where sewers are not <br />available for the disposal of waste <br />water? <br /> <br />f) Would the project directly or <br />indirectly destroy a unique <br />paleontological resource or site or <br />unique geological feature? <br /> <br /> <br /> <br />3.7.1 Environmental Setting <br />The Study Area consists of on-land and overwater Impact Areas distributed across six <br />counties: Alameda, Contra Costa, Sacramento, San Joaquin, Solano and Yolo <br />Counties. The California Geologic Survey of California Department of Conservation has <br />determined the Impact Areas within Contra Costa, Sacramento, San Joaquin, Solano <br />and Yolo Counties to be mostly composed of quaternary deposits of alluvium, lake,