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FRIEDMAN& BRUYA, INC. , <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 12/13/02 <br /> Date Received: 11/27/02 <br /> Project: 2463.002 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER. <br /> SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL ' <br /> USING EPA METHOD 8015M <br /> Laboratory Code: Laboratory Control Sample Silica Gel <br /> Percent Percent ' <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria (Limit 20) <br /> Diesel µg/l, (ppb) 5,000 127 123 71.128 3 ' <br /> 18 , <br />