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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> 1wlient AMERCO Real Estate Company Service Request: L2043110 <br /> Protect. U-Haul!#709-501002-70950-02 Date Collected: NA <br /> LCS Matrix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed 1017100 <br /> Laboratory Control Sample/Duplicate Laboratory Control Sample Summary <br /> Volatile Organic Compounds <br /> Sample Name Duplicate Lab Control Sample Units uglL(ppb) <br /> Lab Code L201007-LCS 1, L201007-DLCS 1 Basis NA <br /> Test Notes <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis True Value Result Acceptance Percent Result <br /> Analyte Method Method LCS DLCS LCS DLCS LCS DLCS Limits Difference Notes <br /> Benzene EPA 5030 8260B 250 250 234 225 94 90 76-127 4 <br /> Toluene EPA 5030 8260B 250 250 233 232 93 93 76-125 <1 <br /> Ethylbenzene EPA 5030 8260B 250 250 218 226 87 90 75-130 4 <br /> Xylenes,Total EPA 5030 8260B 750 750 661 676 88 90 75-130 2 <br /> Methyl tert-Butyl Ether EPA 5030 8260B 500 500 429 423 86 85 50-150 1 <br /> 1 • <br /> r <br /> i <br /> • <br /> Date <br /> Approved By <br /> 63I IMA AB2-MIS 10119100 9260WOXY XLT <br />