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July 13,2001 <br /> Job Number: LGO1-191 <br /> Page 4 <br /> V. GROUND WATER <br /> The San Joaquin County Flood Control and Water Conservation District ground-water <br /> depth and elevation maps indicate the ground water levels most parts of the San Joaquin County.' <br /> Unfortunately, these maps do not provide coverage for the western edge of Stockton due to <br /> shallow ground water below ten feet. Table 3 summarizes all the available ground water <br /> information collected for the site and nearby area. <br /> y Table 3. <br /> Summary of Available Ground Water Information. <br /> Date,Source Groundwater Depth T Notes <br /> June 20,2001, 10-ft soil boring,Neil O. 4.8 feet. Shallow ground water encountered <br /> Anderson&Associates,Inc. in the 10-foot soil profile boring. <br /> Fall 1998, San Joaquin County Flood Less than 10 feet. No reliable ground water <br /> Control and Water Conservation District information is available along the <br /> map.' west side area of City of Stockton. <br /> Spring 1999, San Joaquin County Flood Less than 10 feet. No reliable ground water <br /> - Control and Water Conservation District. information is available along the <br /> west side area of City of Stockton. <br /> Note: ND=Non-Detectable(or not found at detectable limits). <br /> The depth to ground water at the site was measured in the ten foot soil profile boring and <br /> was found to be at a depth of 4.5 feet. The ground-water gradient and ground-water flow <br /> direction near the site is not known exactly however it generally flows eastward. <br /> ® No water well exists on the property. Normally, if a well exists on site and is accessible <br /> to sampling, a water sample will be collected and tested for nitrate and DBCP. This information <br /> is typically used to determine the levels of Nitrate and DBCP in the aquifer for the depths <br /> corresponding with the screened interval of the well. The information can help determine <br /> whether the aquifer zone, from which the well is drawing, is experiencing impacts from the <br /> septic systems, agriculture, dairies, or fertilizers. <br /> San Joaquin County Flood Control and Water Conservation District. Depth to ground water and ground- <br /> water elevation maps Fall 1998 and Spring 1999. Published biannually,Scale: 1 inch=2 miles. <br /> �pE�10 <br /> S <br /> 1 . <br /> Z W <br /> o � <br /> X11 p G♦ <br /> r <br />