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rox <br /> EXECUTIVE SUMMARY <br /> On March 11, 1989, TARGET Environmental Services, Inc. <br /> (TARGET) conducted a soil gas survey at Mobil Service Station #10- <br /> 297, 1403 Country Club Boulevard, Stockton, California. Analysis <br /> of .the samples by GCIF1, revealed moderately high levels of <br /> petroleum hydrocarbons on the site and chromatogram signatures <br /> confirmed t`.e presence of gasoline. Map patterns, concentration <br /> gradients and chromatographic- data suggest that gasoline entered <br /> the subsurface on the eastern-side cf-.rhe pump islands and subs=- <br /> quently migrated northeasterly toward 2ershinAvei:ue. The <br /> chromatogram: signature of the sample near the apparent source is <br /> i <br /> ;. typical of "fresh" gasoline. <br /> Further investigation of the area around the pumps may be t <br /> } <br /> '�. warranted. <br /> t- <br /> -NEW INNI <br /> I ' <br /> f <br /> l <br /> 1 <br />