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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 08/18/03 <br /> Date Received: 08/06/03 <br /> Pro)ect: 6447.001 (U.S. CAN), F&BI 308040 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER <br /> SAMPLES FOR BENZENE, TOLUENE, ETHYLBENZENE, <br /> XYLENES AND TPH AS GASOLINE <br /> USING EPA METHODS 8021E AND 8015M <br /> Laboratory Code: 308006.01 (Duplicate) <br /> Relative Percent <br /> Reporting ' Sample; Duplicate Difference <br /> Analyte Units Result Result (Limit 20) <br /> Benzene �tg/L (ppb) 8,300 9,000 8 <br /> Toluene 4g/L (ppb) 5,000 5,400 8 <br /> Ethylbenzene gglL (ppb) 1,200 1,300 8 <br /> Xylenes �tg/L (ppb) 5,900 6,400 8 <br /> Gasoline gglL (ppb) 61,000 68,000 11 <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria (Limit 20) <br /> Benzene µglL (ppb) 25 90 101 71-117 12 <br /> Toluene jig/L (ppb) 25 92 105 71-119 13 <br /> Dthylbenzene µglL (ppb) 25 90 104 67-125 14 <br /> Xylenes µglL (ppb) 75 87 100 65-127 14 <br /> Gasoline 4glL (ppb) 1,000 86 86 62-120 0 <br /> 12 <br />