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' In accordance with the work plan C ondor uinducted an additional soil and groundwater investigation on • September 10 15 and IS 1997 at the site Four monitor wells were drilled, installed, developed, surveyed, and sampled as part of the 111yestigation Ilie Report - Additl'onal S'od and Groundwater Invcvtagation, dated December l 1, 1997 was prepared by Condor describing the investigation results Laboratory analysts of the soil samples indicated that total petroleum hydrocarbons quantified as kerosene, ' diesel and motor oil ( I'FPH) ethanol, tertiary butanol DIPE FJ BE and (TAME) were not detected at or above the laboratory reported detection limits In any of the samples collected from the monitoring wells during the 5epternber 1997 sampling event B FEX TPII-G, and MTBF were not detected at or above the laboratory ' reported detection limits In the soil sample Collected from MW-1 at a depth of six feet bgs Benzene, ethyl benzene and xylene, wCre not detected at or above the laboratory reported detection limits in the soil sample Collected from MW-2 at a depth of four feet bgs toluene, IPH-G and MTBE were detected in the soil sample ' collected from MW-2 at a depth of four feet bgs (16 µg/kg, 1 2 mg/kg and 1,300 µg/kg, respectively) Benzene and toluenC were not detected at or above the raised laboratory reported detection limit in the soil sample collected from MW-4 at a depth of Six feet bgs MTBE was not detected at or above the laboratory reported ' detection limit in the sample collected from MW-4 at a depth of Six feet Ethyl benzene, xylene and TPH-G were detected In the. Sall Sample collected from MW4 at a depth of six feet (680 µg/kg 6,000 µ/kg, and 28 mg/kg, respectively) A summary of the laboratory analytical results of the soil samples are presented below In lable B5 TABLE 13.5 Soil Sample Analytical Results 13 r k K TPH-G Gasoline TEPH Oxygenates/ Additives hcrosene Diesel Motor Oil DCtLctton 5 0 5 0 5 0 5 0 1 0 10 0 1 0 1 0 100 t Imus ug/kg µg/kg pg/kg pg/kg mg/kg ug/kg mg/kg mg/kg mg/kg Sample ID MWI-6 ND ND ND ND ND ND ND ND ND MW2-4 ND €6 ND ND l 2 1 300 ND ND ND (Mrl3F) ** MW4-6 ND 100' ND 100* 680 6 000 28 ND ND ND ND l,mt conyLlstonp Anilyticql i Eo, pirts pea billion(ppb) STEX -btnzene tolucnL ethyl benzene find xylene enLiki, parts pea inilhon(ppm) TFPH total petrolnun hydrocarbons quantified u kelose.ne diesel mid motor all TPI i(, total petroleum hydrocubonc quantified as gasoline MTBE methyl tertiary butyl ether ND none detected at or fbove inboratory detection hmrta ND X- none detected ton level of X ' ill other gasolene,iddttivesloxygtnates were not duetted at or above the laboratory rtpomd [Ieteetian limits Laboratory analysis of the groundwater samples indicated total petroleum hydrocarbons quantified as kerosene, diesel, and motor oil (TEPH), ethanol, RIPE and FTBE were not detected at or above the laboratory reported Ile detection limits in any of the groundwater samples collected from the monitoring wells during the September, 1997, sampling event BTFX, the selected gasoline oxygenates/additives and FPH-G were not detected at or above the laboratory reported detection limits in the groundwater sample collected from MW-1 Toluene, ethyl benzene, and TPH-G were not detected at or above the laboratory reported detection limits in the groundwater I