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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client: ARCO Products Company Service Request: L9901977 <br /> Project- WA#24406 0016020-Man'eca Date Collected: NA <br /> LCS Matrix: water Date Received. NA <br /> Date Digested: 513199 e <br /> Date Analyzed: 513199 <br /> Laboratory Control Sample Summary <br /> Lead,Total , <br /> Sample Name Lab Control Sample Units mg/L(ppm) <br /> Lab Code L990503-LCS Basis Wet <br /> Test Notes 7 <br /> CAS <br /> Percent <br /> Recovery <br /> Prep Analysis True Percent Acceptance Result <br /> Analyte Method Method Value Result Recovery Limits Notes <br /> Lead,'Total EPA 3050B 6010B 0 500 0 489 98 75-125 <br /> Approved By Data <br /> LCSW0597p e <br /> Ptge No <br /> 019771CP JE1 LCS 5!499 <br />