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' Stockton Plating Inc. <br /> Soil & Groundwater Investigation <br /> . April 19, 1994 <br /> Page - 15 - <br />' 7.2 Conclusions <br /> Based on the results of this investigation and previous <br /> investigations, the gasoline contaminated soil and groundwater <br />' detected at the site appears to be associated with the 2, 000- <br /> gallon UST removed from SPT in 1990 (TK1-90 ) . During the current <br />' investigation, gasoline concentrations were found in soil samples <br /> collected from MW3 only. No evidence of petroleum hydrocarbons <br />' were detected in soil samples collected from MW1 or MW2 . The <br />' previous soil investigation conducted in September 1991 by Condor <br /> revealed gasoline concentrations in soil boring 3 (SB3 ) at 20 and <br />' 30 feet below the ground surface. Lower concentrations of BTEX <br /> were detected in SB2 at 20 and 45 feet. The presence of gasoline <br /> contaminants at 20 and 30 feet in MW3, SB2 and SB3 suggests that <br /> the three boreholes are located relatively close to the source of <br /> gasoline. In addition, low concentrations of BTEX were detected <br /> in borings SB4, SB5, and SB6 at 45 feet. This suggests that the <br /> gasoline contaminants had spread laterally on the water table. <br /> The groundwater results for MW1, MW2, and MW3 indicate that <br /> gasoline contaminants are present in the groundwater. The extent <br />' of gasoline contamination in the groundwater has not been <br /> determined. <br /> The source or nature of the green soil encountered at a <br />' depth of approximately 25 feet and extending to the bottom of <br /> • <br /> CONDOR <br />