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On August 17, 1994, FEA drilled one soil boring (designated B-1), near the center of the former <br /> UST excavation, to a total depth of 60 feet below ground surface (bgs) Soil samples collected at <br /> 30 and 40 feet bgs contained detectable concentrations of TPH-as-gasoline, toluene, <br /> ethylbenzene and xylenes Soil samples collected at 55 and 60 feet bgs only contained trace <br /> concentrations of xylenes of up to 0 018 mg/kg The analytical results from these soil samples are <br /> also summarized in Table 1 A groundwater-grab sample collected from B-1 contained 76,000 <br /> micrograms per liter (µg/I) of TPH-as-gasoline, 38 µg/l of benzene, 310 µg/l of toluene, 4 8 ofµg/l <br /> ethylbenzene and 6,800 µg/l of xylenes <br /> r <br /> 5 <br />