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I <br />' The composited stockpile soil samples contained TPH-g at concentrations ranging from 1,900 mg/kg <br /> • to 2,100 mg/kg BTEX compounds ranged from below laboratory detection limits (benzene in <br />' sample SPA-D) to 280 mg/kg(xylenes In sample SPH-L) MTBE, TAME and TBA were detected <br /> as high as 3,000 µg/kg, 240 µg/kg and 3,500 µg/kg,respectively Analytical results of soil samples <br /> are summarized on Table 1 <br />' AGE calculated that approximately 126 gallons of gasoline were removed In the soil excavated <br /> during the interim remediation The highest concentrations of petroleum hydrocarbons compounds <br />' left In place were detected In the sample collected from the western wall of the former excavation <br /> Lower concentrations of petroleum hydrocarbons as gasoline were also detected In the floor sample <br /> and samples collected from the north and west sidewalls Fuel oxygenates,including MTBE,TAME <br />' and TBA were detected In all samples <br />' SITE ASSESSMENT <br /> On 15 through 17 October 2001, six soil bonngs (B1 through 136) were advanced at the site, three <br />' soil borings, B1 through B3, were established as ground water monitoring wells MW-1 through <br /> MW-3, respectively <br />' Soil in the area of boring B1 (MW-1) and locally bonngs B4 and B5 was found to contain high <br /> concentrations of petroleum hydrocarbons at depths of 15 bsg, with reduced concentrations <br />' encountered at depths to 70 feet bsg <br /> Groundwater monitoring data from the Initial ground water monitoring event on 02 November 2001 <br />' indicated that ground water was flowing towards the northeast, and was locally impacted by the <br /> oxygenated fuel additive MTBE <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> • Advanced GeoEnvironmental,Inc <br /> 1 <br />