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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 06/07/00 <br /> Date Received: 05/17/00 <br /> Project: 6115.008 <br /> QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF WATER SAMPLES <br /> FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL <br /> USING EPA METHOD 8015M <br /> Laboratory Code: Laboratory Control Sample <br /> Relative <br /> Reporting Spike % Recovery % Recovery Acceptance Percent <br /> Analyte Unite Level LCS LCSD Criteria Difference <br /> Diesel pg/L (ppb) 2,500 100 92 55-142 8 <br /> Laboratory Code: Laboratory Control Sample Silica gel <br /> Relative <br /> Reporting Spike % Recovery % Recovery Acceptance Percent <br /> Analyte Unita Level LCS LCSD Criteria Difference <br /> Diesel pg/L (ppb) 2,500 104 87 58-142 18 <br /> 20 <br />