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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 11/01/00 <br /> Date Received: 10/17/00 <br /> Project: 6447.003 <br /> QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES <br /> FOR TOTAL PETROLEUM HYDROCARBONS AS CRUDE OIL <br /> USING EPA METHOD 8015M <br /> Laboratory Code: 010090.05 (Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analvte Units Result Result Difference Criteria <br /> Crude Oil gg/g (ppm) <50 <50 nm 0.20 <br /> Laboratory Code: 010090.05 (Matrix Spike) <br /> Relative <br /> Reporting Spike Sample %Recovery %Recovery Acceptance Percent <br /> Analvte Units Level Result MS MSD Criteria Difference <br /> Crude Oil µgig(ppm) 250 <50 80 92 60.187 14 <br /> Laboratory Code: Laboratory Control Sample <br /> Reporting Spike %Recovery Acceptance <br /> Analyte Units Level LCS Criteria <br /> Crude Oil µg/g (ppm) 500 78 67-140 <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 /> 24 <br />