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03/01 00 MON 16 36 FAX 19259469968 ERMWEST WC 0 004 <br /> . site sett <br /> The investigation site is situated adjacent to the Stockton Deep Water <br /> Channel. The ground surface in the area of the tank lies <br />�., approximately 10 feet above mean sea level. <br /> z� <br /> Two water supply wells are located within 2,000 feet of the subject <br /> property (Figure 1-1). These wells are identified below: <br /> Year <br /> Main I CCWnn Drillad IT= <br /> 1 State of Connell & 1-5 1972 Irrigation <br /> 2 L. Acosta 215 South L.A. St. 1961 Domestic <br /> GeolqW <br /> Soils observed during the excavation e fine�gra tank <br /> so stof semi <br /> rep represent <br /> consolidated silt and silty clay. <br /> deposits of the San Joaquin River. Investigations of the 1515 West <br /> Weber site(located approx mately 500 feet west of the 1325 West Weber <br /> site) indicated that the soils consisted of semi-consolidated silt and <br /> silty clay from the ground surface to a depth of approximately 10 feet. <br /> Below 10 feet and to the depth explored (30 feet), the soils consisted of <br /> unconsolidated sand. For the purpose of this work pian, ERM-West <br /> assumes that the two sites have a similar geologic and hydrologic <br /> setting. <br /> f � <br /> Hydro <br /> Ground wafer was observed vritkun <br /> surface�w hen the tank of the tank �mfl� <br /> vation <br /> (less than 10 feet from the ground <br /> activities were performed. investigation and tank removal activities <br /> in thus area (1515, 1541, and 1325 West Weber Avenue) indicate the <br /> occurrence of ground water at a few feet below the ground surface. <br /> At 1515 West Weber, the ground water flow gradient is toward the <br /> south. Both gradient and flow direction are influenced <br /> ed Channally <br /> induced water level fluctuations in the nearby Deep <br />,� 12 <br />