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-I ' sampling of groundwater monitoring wells In January 1993, three borings were drilled at the site Each boring was completed as a groundwater monitoring well (MW-1, MW-2 and ' MW-3) Eleven soil samples from the monitoring wells were analyzed by Western Environmental Science and Technology (WEST) for total petroleum hydrocarbons as gasoline (TPH) and ' volatile aromatics (BTE&X) TPH as gasoline was detected at concentrations as great as 2 2 mglkg (parts per million, ppm) Low concentrations of benzene, toluene, and xylenes were detected to the soil samples Benzene was detected at concentrations up to 0 63 ppm, toluene was detected at concentrations up to 0 0072 ppm, and xylene was detected at concentrations up to 0 031 ppm No ethylbenzene was detected in any of the analyzed soil ' samples Each monitoring well was sampled on January 29, 1993 The samples«ere analyzed for TPH ' as gasoline and BTE&X Additionally, the sample from MW-3 was analyzed for TPH as motor oil and TPH as diesel ' TPH as gasoline was detected in all three water samples at concentrations up to 540 ug1L (parts per billion, ppb) No TPH as diesel was detected in MW-2 TPH as motor ori was detected in MW-2 at concentrations of 180 ppb Benzene and xylenes ,keie detected iia ' samples fiom each %yell, toluene was detected only in sainples fiom MW-1 and NMI-2, and ethylbenzene was detected only in the sample fzoni MW-1 Analytical results of the eater samples are presented in Table 3 M 24 Soil Vapor Extraction Pilot Test ' A soil vapor extiaction (SVE) pilot test was conducted on VW-1 in December 1993 to deteimine the feasibility of vapor extraction as a iemediation alteinatne at the site Results of the pilot test deteinuned that vapor extraction is a viable alternative for site temediatlon ' Details of the pilot test were repotted in the Quaitefly Repoit for December 1993 t2.5 UST Removal Six underground storage tanks (UST's) were removed from the site on April S, 1994 Nine ' soil samples were collected fiorn the floor of the excavation, six samples fiont the piping area and four samples from the soil stockpiles TPH as gasoline and BTE&X ,�vef e detected in six samples from the excavation with TPH concentt ations at levels up to 3,000 pai is per million (ppm) Toluene and xylenes wel e detected at low concenti ations in two of the soil samples Total lead was detected only in ' one sample at a concentiatton of 7 0 ppm No TPH as diesel, DCA and DCE was detected in any of the samples Details of the tank removal and sampling were reported in the Underground Stoiage Tank Removal Report psepaied by GeoAudit in Apisl 1994 r-1-6 I Audu Seneca Inc A ' AR(A QAL7 girt I d �F