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FRIEDMAN & BRUYA, INC <br /> ENVIRONMENTAL CHEMISTS <br /> to Date of Report October 21, 1993 <br /> Date Received October 12, 1993 <br /> Project- East 11th St , Tracy <br /> Date Samples Extracted October 12, 1993 <br /> Date Extracts Analyzed October 12, 1993 <br /> RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLE <br /> FOR BENZENE, TOLUENE, ETHYLBENZENE, <br /> XYLENES AND GASOLINE <br /> USING EPA METHODS 8020 AND 8015 <br /> Results Reported as pg/g (ppm) <br /> Ethyl Total Internal <br /> Sample # Benzene Toluene Benzene Xylenes Gasoline Standard <br /> % Recovery <br /> SB-3-8 5' <0 2 <0 2 0 2 0 5 260 103% <br /> Quality Assurance <br /> . Blank <0.2 <0 2 <0 2 <0 4 <10 102% <br /> SB-3-8 5' <br /> (Duplicate) <0 2 <0 2 0 3 0 8 300 65% <br /> SB-3-8 5' <br /> (Matrix Spike) <br /> % Recovery 120% 120% 150% 150% na 111% <br /> Spike Blank <br /> % Recovery 110% 90% 105% 82% 114% 86% <br /> Spike Level 10 10 10 20 100 <br />