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uous lenses <br /> of clayand silt which create localized <br /> confinement (California Department of Water Resources, 1967 ? . <br /> E <br /> The lithclogic units expected to be encountered during the <br /> proposed soils investigation (Section 5.0 ) are unconsolidated <br /> venticular deposits or discontinuous mixtures of gravel, sand, <br /> site and clay. These units are characteristic of the <br /> Sf continental fan and interfan deposits of the victor Formation. <br /> Logs for wells in the vicinity of the site reveal thin shallow <br /> [surface to -40 ft mean sea level (msl )l lithologic units of <br /> �.� <br /> discontinuous clay and sand lenses separated by silt, clay or <br /> sandy clay. <br /> R.. <br /> 3 . 2 GROUND WATER <br /> The yearly fluctuations of the ground water table elevations <br /> in this area vary widely. Information obtained from the San <br /> w. Joaquin County Flood Control and Water Conservation District <br /> M indicate ground water levels from 70 ft subsurface in the <br /> � . spring of 1978 ( following two dry years) to 35 ft subsurface <br /> i » Y l . <br /> in the spring of 1986 (an exp `"��...wl wet yearAs 1987 has <br /> ' ! been a dry year, i',� has been assumed that the ground water <br /> table will be below 35 ft. <br /> W An industrial rotary well located approximately 1 ,000 yards <br /> south of the site, the Cerri Feed Store, <br /> was drilled to a <br /> depth of 160 ft in June of 1973. At that time ground water <br /> was encountered at 68 ft. The 6 inch well was screened from <br /> F 140 feet to 160 feet and sealed to the surface (San Joaquin <br /> Local Health District ) . The direction of the flow of the <br /> ground water in the area also varies but is generally to the <br /> northeast. <br /> Residential areas to the north and east of the site draw on f(� <br /> city water from a well field located at the Stocktonrl?�t��r'jr'�"� I <br /> G' '�+ <br /> ✓rrc4,��c�„ <br />