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-, sampling of groundwater monitoring wells. In January 1993, three borings %were drilled at <br /> the site. Each boring was completed as a groundwater monitoring well (N1W-1, MW-2 and <br /> LMW-3). <br /> Eleven soil samples from the monitoring wells were analyzed by Western Environmental <br /> Science and Technology (WEST) for total petroleum hydrocarbons as gasoline (TPH) and <br /> volatile aromatics (BTE&X). TPH as gasoline was detected at concentrations as great as 2.2 <br /> mglkg (parts per million, ppm). Low concentrations of benzene., toluene, and xylenes were <br /> detected in the soil samples. Benzene was detected at concentrations up to 0.63 ppm; <br /> toluene was detected at concentrations up to 0,0072 ppni: and xylene was detected at <br /> concentrations up to 0.031 ppm. No ethylbenzene was detected in any of the analyzed soil <br /> samples. <br /> Each monitoring well was sampled on January 29, 1993. The samples were analyzed for TPH <br /> as gasoline and BTE&X. Additionally, the sample from 'N11V-3 was analyzed for TPH as <br /> motor oil and TPH as diesel. <br /> TPH as gasoline was detected in all three water samples at concentrations up to 540 go L <br /> (parts per billion, ppb). No TPH as diesel was detected in M\V-21. TPH as motor oil was <br /> detected in NNW-2 at concentrations of 180 ppb. Benzene and xylenes were detected in <br /> samples from each well: toluene was detected only in samples from MW-1 and N1W-2: and <br /> ethylbenzene was detected only in the sample from i1W-1. Analytical results of the water <br /> -- , samples are presented in Table 3. <br /> Va por Extraction Pilot Test <br /> ...4 Soil < 1 <br /> A soil vapor extraction (SVE) pilot test was conducted on V1V-1 in December 1993 to <br /> determine the feasibility of vapor extraction as a remediation alternative at the site. Results <br /> of the pilot test determined that vapor extraction is a viable alternative for site remediation. <br /> Details of the pilot test were reported in the Quarterly Report for December 1993. <br /> L2.5 UST Removal <br /> Six underground storage tanks (UST's) were removed from the site on April 8, 1994. Nine <br /> soil samples were collected from the floor of the excavation, six samples from the piping <br /> area and four samples from the soil stockpiles. <br /> TPH as gasoline and BTE&X were detected in six samples from the excavation with TPH <br /> concentrations at levels up to 3,000 parts per million (ppm). Toluene and xylenes were <br /> detected at low concentrations in two of the soil samples. Total lead was detected only in <br /> f one sample at a concentration of 7.0ppm. No TPH as diesel, DCA and DCE was detected <br /> L in any of the samples. Details of the tank removal and sampling were reported in the <br /> Underground Storage Tank Removal Report prepared by GeoAudit in April 1994. <br /> G�bginl A.Jii S,1i- J.- 4- <br /> ARCD QRI2-94lN.1.8 <br />