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0 <br /> rte•`, <br /> AGS 87031-2 <br /> USA Station No. 110 <br /> E Stockton, California <br /> previously sampled were found. other unrecorded wells may be <br /> present in the area. Approximate locations of the known wells in <br /> the immediate area of the site are depicted on the Site Vicinity <br /> Map, Plate P-2. <br /> Data contained in the records indicate that most wells in the <br /> area are drilled to depths greater than 100 feet, and probably <br /> are producing from sandy intervals deeper, and possibly <br /> hydrologically separated from, the ground water sampled in the <br /> monitoring <br /> wells on site. Using the data available from the <br /> sampled domestic wells and the distribution of ;mown wells <br /> relative to the site, we infer that there is no apparent <br /> immediate threat to current ground water supplies due to the <br /> presence of contamination-: below the site. <br /> CONCLUSIONS <br /> The results of laboratory analyses -.ndicate that contamination <br /> from the area of the product tanks has penetrated to the points <br /> sampled in the monitoring wells. Floating gasoline product is <br /> present in monitoring well S-11 installed immediately adjacent to <br /> the tank cavity• Significant soil contamination (260 ppm) <br /> appears to be limited to the immediate area of the tank cavity <br /> --------------- --------------- -- <br /> -------and near the ground-water surface, since-only-law - ev -------- -- <br /> 16 <br /> Geosystems <br />