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1 <br />' SECTION 6 <br /> SUMMARY OF FINDINGS <br /> This section summarizes the findings of the tank removal activities <br />' at each of the former tank sites at the West Weber property. <br />' Former Tank Site #1 <br />' A release of petroleum products to soil and ground water from a <br /> 2,000-gallon underground fuel storage tank formerly located at Site <br /> #1 has been documented Investigations conducted at the site have <br />' defined the extent of the release. The lateral and vertical extent of <br /> TPH and BTEX in soil at Site #1 is limited to a localized area in the <br /> vicinity of the former tank, in a zone between approximately 6 and <br />' 11 feet below the ground surface. Based on data obtained during the <br /> investigation, the volume of soils containing TPH as gasoline in <br /> excess of 100 mg/kg (ppm) at Site #1 is estimated to be approximately <br /> 200 to 300 cubic yards. <br /> The extent of TPH and BTEX in ground water is also limited to a <br /> localized area in the vicinity of the former tank. The results of <br />' quarterly ground water samples collected from site monitoring wells <br /> since April 1991 have shown a steady decline in the concentrations of <br /> TPH-gasoline and benzene in ground water (all monitoring wells at <br />' Site #1 are non-detect for these compounds except for well MW-5) <br />' Former Tank Site#2 <br />' The extent of the release of petroleum products to soil and ground <br /> water from a 500-gallon underground fuel storage tank formerly <br /> located at Site #2 was defined during the Phase I and Phase II <br /> investigations. The lateral occurrence of TPH and BTEX in soils is <br /> limited to the area immediately northeast of the former tank location <br /> and the vertical occurrence is primarily limited to the 5-to-7.5-foot bgs <br /> depth interval. Based on data obtained during the investigations, the <br />' volume of soils containing TPH as gasoline in excess of 100 mg/kg <br /> (ppm) at Former Tank Site #2 is estimated to be approximately 500 to <br /> 700 cubic yards. <br />' The extent of TPH and BTEX in ground water at Site #2 is limited to a <br /> localized area surrounding monitoring well MW-1A dust north of the <br /> 6-1 <br />