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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 09/28/99 <br /> Date Received: 09/24/99 <br /> Project: 5650 <br /> QUALITY ASSURANCE RESULTSFOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR TOTAL PETROLEUM HYDROCARBONS AS GASOLINE <br /> USING EPA METHOD 8015M <br /> Laboratory Code: 909106-01 (Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analvte Units Result Result Difference Criteria <br /> Gasoline pg/g (ppm) <1 <1 nm 0-20 <br /> Laboratory Code: 909106-09(Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analyte Units Result Result Difference Criteria <br /> Gasoline pg/g(ppm) <1 <1 am 0-20 <br /> Laboratory Code: Laboratory Control Sample <br /> Relative <br /> Reporting Spike %Recovery %Recovery Acceptance Percent <br /> Analvte Units Level LCS LCSD Criteria Difference <br /> Gasoline gg/g(ppm) 10 96 98 68-112 2 <br /> are -The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of <br /> the RPD is not applicable. <br /> 34 <br />