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' Drinking water at and near the site is supplied by private wells Two on-site domestic wells(DW-1 <br /> . and DW-2) were identified during a sensitive receptor survey conducted during the fourth quarter <br />' 1999, DW-1 is located approximately 140 feet north and DW-2 was located approximately90 feet <br /> southeast of the former UST system DW-2 reportedly had been out of service since 1978 due to <br /> sand infiltration problems and was abandoned in October 2000 Ground water in well DW-1 is <br />' sampled each quarter, and to date analytical results have been non-detect <br /> In addition to on-site well DW-1,ten other private wells and one public well were identified within <br />' a 2,000-foot radius of the site,the nearest off-site well 1s approximately 220 feet from the site Based <br /> on the lateral extent of contaminated ground water at the site, it is unlikely for off-site wells to be <br /> contaminated by impacted ground water from the site <br />' The subject property utilizes two septic stems, one is located approximately 90 feet east of the <br /> J p p Y p Y <br /> former UST system and the second system is located toward the front of the property,near the office <br />' building, approximately 250 feet west of the former UST system Based on the lateral extent of <br /> contaminated soil and ground water,there is a low potential for the septic systems to act as conduits <br />' for subsurface migration of impacted ground water / <br /> The nearest surface water features to the site is the Stockton Diverting Canal, located approximately <br />' 2,300 feet south-southwest of the site It is unlikely that water in the Stockton Diverting Canal is <br /> contaminated by impacted ground water from the site based on its distance and direction (up- <br /> gradient) from the site <br /> 1� <br /> I <br /> 1 <br /> I <br /> y I <br /> I <br />