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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 08118103 <br /> Date Received: 08/06/03 <br /> Project: 6447.001 (U.S. CAN), F&BI 308044 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR VOLATILES BY EPA METHOD 8260B <br /> Laboratory Code: 308049-06(Duplicate) <br /> Relative Percent <br /> Reporting Sample Duplicate Difference <br /> Analyte Units Result Result (Limit 20) <br /> Benzene 1 glg (ppm) <0.005 <0.005 nm <br /> Toluene µglg (ppm) <0.005 <0.005 nm <br /> Ethylbenzene µglg (ppm) <0.005 <0.005 nm <br /> m-Xylene ug/g (ppm) {0.005 <0.005 nm <br /> o-Xylene �Lglg (ppm) <0.005 <0.005 nm <br /> Laboratory Code: 3080d4.06 (Matrix Spike) <br /> Percent Percent <br /> Reporting Spike Sample Recovery Recovery Acceptance RPD <br /> Analyte Units Level Result MS MSD Criteria (Limit 20) <br /> Benzene. µglg (ppm) 0.05 <0.005 118 111 70-130 6 <br /> Toluene µglg (ppm) 0.05 <0.005 114 107 70.130 6 <br /> Ethyl-benzene µglg (ppm) 0.05 <0.005 118 112 70-130 6 <br /> m-Xylene 4glg (ppm) 0.05 <0.005 120 112 70-130 7 <br /> o•Xylene µglg (ppm) 0.05 <0.005 118 110 '70-130 7 <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level TICS LCSD Criteria (Limit 20)_ <br /> Benzene µglg (ppm) 0.05 1.0I 101 70-130 0 <br /> Toluene uglg (ppm) 0.05 97 98 70.130 1 <br /> Ethylbenzene µglg (ppm) 0.05 1.00 100 70-130 0 <br /> m-Xylene µglg (ppm) 0.115 104 103 70-130 1 <br /> o-Xylene µglg (ppm) 0.05 102 102 70-130 0 <br /> nm -The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of <br /> the RPD is not applicable. <br /> 18 <br />