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FREEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 06/11/02 <br /> Date Received: 05/24/02 <br /> Project: 5011.001 (Roberts Property) <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: 205192-14 (Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analyte Units Result Result Difference Criteria <br /> Crude Cil µgig(Ppm) <50 X50 nm 9.20 <br /> Laboratory Code: 205192-14(Matrix Spike) <br /> Reporting Spike Sample % Recovery % Recovery Acceptance RPD <br /> Analyte Units Level Result MS MSD Criteria (Limit 20) <br /> Crude Cil µgig (ppm) 250 <50 126 122 65-135 3 <br /> Laboratory Code: Laboratory Control Sample <br /> Reporting Spike % Recovery Acceptance <br /> Analyte Units Level LCS Criteria <br /> Crude Oil nig(ppm) 254 103 65-135 <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 /> 34 <br />