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' FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: November 15, 1995 <br /> ' Date Received: November 13, 1995 <br /> Project: C3077 <br /> ' QUALITY ASSURANCE RESULTS <br /> FOR BENZENE, TOLUENE, ETHYLBENZENE, <br /> ' XYLENES AND GASOLINE <br /> USING EPA METHODS 8020 AND 8015 <br /> Samples Processed Using Method 5030 <br /> ' per California LUFT Guidelines <br /> Laboratory Code: 63692 (Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> ' 1 n' -Result u Difference Criteria <br /> Benzene ug/g (ppm) <0.02 <0.02 0 0-20 <br /> Toluene uglg(ppm) <0.02 X0.02 0 0-20 <br /> ' Ethylbenzene uglg(ppm) 0.02 0.02 0 0-20 <br /> Xylenes ug/g(ppm) 0.05 0.05 0 0-20 <br /> Gasoline ug/g (ppm) 2 2 0 0-20 <br /> Laboratory Code: 63692 (Matrix Spike) <br /> ' Relative <br /> Reporting Spike Sample % Recovery Acceptance Percent <br /> Analyte: Units---_ Level Result MS MSD Criteria Difference <br /> Benzene ug/g (ppm) 1 <0.02 78 75 56-111 4 <br /> Toluene ug/g (ppm) 1 <0.02 79 75 49-124 5 <br /> Ethyibenzene ug/g (ppm) 1 0.02 80 79 54-115 1 <br /> ' Xylenes ug/g(ppm) 3 0.05 82 82 66-110 0 <br /> 1 <br /> 1 <br />