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' significantly with depth In boring B3-A, the concentration of TPH as gasoline decreased from 360 mg/kg at a depth of 6 feet to non-detect at a depth of 10 feet In boring MW-1A, the concentration decreased from 240 mg/kg at a depth of 5 feet to 11 mg/kg at a depth of 7 5 feet. TPH as diesel was only detected an soil samples collected from boring ' MW-1A. The maximum concentration of TPH as diesel was measured as 180 mg/kg at a depth of 5 feet. However, the concentration decreased to 11 mg/kg at a depth of 7 5 feet. ' BTEX compounds were detected in 5 of 21 soil samples. The occurrence of BTEX compounds was limited to the same samples which contained TPH as gasoline (except that very low concentrations of BTEX were detected in MW-2A at 10 feet, but no TPH was detected). The maximum measured concentrations of BTEX compounds in soil were detected at a depth of 5-to-7 5 feet in ' borings MW-1A and MW-3A. Soils at MW-2A showed no detectable quantities of TPH as gasoline or ' diesel. Insignificant quantities of BTEX compounds (less than 0 02 mg/kg) were encountered an the sample collected at a depth of 10 feet However, no BTEX compounds were detected at 13 5 feet Thus, ' the hydrocarbon compounds were removed from this excavation during tank removal activities. Hydrocarbons in The occurrence in ground water of TPH as gasoline and diesel has been limited to wells MW-1A and MW-2A. No TPH as gasoline or dxesei or BTEX compounds have been detected an ground water samples collected from MW-3A, MW-4A, and MW-5A The concentrations of both constituents in well MW-1A have fluctuated over time. Concentrations of TPH as gasoline in monitoring well MW-1A have fluctuated between 23 and 50 mg/l ' between April 1992 and April 1993, and the concentrations of TPH as diesel have varied between 2.0 and 7 1 mg/l over the same period Alternately, the concentrations of TPH as gasoline and diesel an well ' MW-2A showed a steady decrease over time. Concentrations of both constituents have been non-detect an MW-2A since December 1992. The occurrence of BTEX compounds in ground water has paralleled that of TPH. Concentrations of BTEX compounds detected an MW-IA have fluctuated over time, whale concentrations detected in MW-2A ' have steadily decreased over time and have been non-detect since December 1992. In April 1992, very low concentrations of BTEX (less than .0008 mg/1) were detected an MW-3A, but all concentrations have been non-detect since June 1992. jrgajj� Organic lead was not detected an any of the soil or ground water samples that analyzed.were the Phase I lead wasanvestagataonetected in l of at the soil samples collectedduring However, these concentrations between 3 and 4 mg/kg. 5-14