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DER <br /> Table <br /> Nlgl,f Nople.X19M5olutiers <br /> Table 4-2 (continued) <br /> Physical Setting <br /> Data General Information <br /> OIL AND GAS WELLS Kleinfelder reviewed DOGGR's Well Finder online database for oil and <br /> gas wells located on the Site and in the Site vicinity. No oil or gas wells <br /> are depicted on the Site or in the immediate Site vicinity. A copy of the <br /> Well Finder search results is provided in Appendix C. <br /> Information about the regional geology is presented in Table 4-3. This information was obtained <br /> by Kleinfelder from published data and maps, interviews with public agencies, and/or previous <br /> investigations performed by Kleinfelder in the Site vicinity. <br /> Table 4-3 <br /> Regional Geology and Hydrogeology <br /> Physical Parameter Information/Comments <br /> REGIONAL The Site is located within the Great Valley geomorphic province of <br /> PHYSIOGRAPHY AND California, an asymmetrical, synclinal trough about 645 kilometers (km) <br /> GEOLOGY long and 80 km wide. The province formed as a result of the Sierran block <br /> tilting during the late Tertiary and Quaternary periods. During these <br /> periods regional tectonic movement caused the western side of the block <br /> to drop forming the valley and the eastern side to uplift forming the Sierra <br /> Nevada Mountains. The valley was in-filled with a thick sequence of <br /> unconsolidated to semi-consolidated Pleistocene sediments during <br /> repeated transgression and regression of a shallow inland sea that <br /> occupied the valley at that time. Erosion of the adjacent Sierra Nevada <br /> Mountains and Coast Ranges provided fine- to coarse-grained sediment. <br /> Overlying these deposits are Holocene alluvial, basin, and delta plain <br /> sediments. The thickness of the valley sediments ranges from a thin layer <br /> at the edges of the valley to thousands of meters in the western portion. <br /> REGIONAL The Site is located in the San Joaquin Valley Groundwater Basin, Eastern <br /> HYDROGEOLOGY San Joaquin Subbasin. The San Joaquin Valley comprises the <br /> southernmost portion of the Great Valley Geomorphic Province of <br /> California. The Eastern San Joaquin Subbasin is defined by the areal <br /> extent of unconsolidated to semi-consolidated sedimentary deposits that <br /> are bound by the Mokelumne River on the north and northwest, San <br /> Joaquin River on the west, Stanislaus River on the south, and <br /> consolidated bedrock on the east. Water bearing formations in the <br /> Eastern San Joaquin Subbasin consist of the Alluvium and <br /> Modesto/Riverbank Formations, Flood Basin Deposits, Laguna <br /> Formation, and Mehrten Formation (CDWR, 2006). <br /> DEPTH TO Based on information obtained from the SWRCB GeoTrackerThl database <br /> GROUNDWATER AND (http://geotracker.waterboards.ca..qov/), groundwater beneath a property <br /> DIRECTION OF located south of the Site(a portion of which adjoins to the south of Parcel <br /> ANTICIPATED FLOW 1 3)was encountered at depths between 15 and 30 feet bgs (WKA, 2005). <br /> Groundwater was reported to flow predominately to the northwest. <br /> 20172543.001A/STO16R49461 Page 25 of 54 November 2, 2016 <br /> ©2016 Kleinfelder w .kleinfelder.com <br />