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06 June 2000 <br /> AGE-NC Project No. 95-0197 <br /> ' Page 3 of 7 <br /> ' principal sources of domestic ground water in the 13,500-square mile San Joaquin Valley Ground . <br /> Water Basin(Basin 5-22). <br /> 2.3. GROUND WATER DEPTH AND FLOW DIRECTION <br /> ' Based on the San Joaquin County Flood Control District and Water Conservation District Lines of <br /> Equal Depth of Water Wells Fall 1998 map, the estimated depth to ground water in the vicinity of <br /> ' the site is 15 to 25 feet below surface grade(bsg). Based on Quarterly Report-First Quarter 2000, <br /> dated 17 April 2000 prepared by AGE, the approximate depth to ground water is 14 feet as of 27 <br /> March 2000. <br /> Based upon data obtained from previous monitoring events, the prevailing ground water flow <br /> direction in the vicinity of the site is estimated to be toward the north-northeast. However, flow <br />! ' direction may be variable. <br /> 2.4. RECEPTOR WELL SURVEY <br /> � Drinking water is supplied to the subject site and surrounding residential neighborhood by City of <br /> Stockton Municipal Wells, however no municipal wells are located within a 2,000 foot radius of the <br /> subject site. No wells were located within 2,000 feet of the subject property on the DWR database <br /> or the SJCFC&WCD map. No other wells were identified during the physical survey. Figure 3 <br /> depicts the area covered by the receptor search. <br /> 3.0. SCOPE OF WORK <br /> Based on the data accumulated from preliminary site assessment activities and quarterly monitoring <br /> AGE proposes to collect soil and ground water samples to further assess the lateral and vertical <br /> extent of petroleum hydrocarbon impaction. The additional site assessment will consist of the <br /> following tasks: <br /> Permitting and pre-field work activities; <br /> o Soil sample collection and analysis; <br /> a Ground water sample collection and analysis; <br /> ' a Report preparation. <br /> t� Each of these tasks is described in greater detail below. <br /> Advanced CeoEnvironmentai,Inc. <br /> 1 <br />