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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client Blies Environmental Service Request 52001904 <br /> Project. U-HAUL#709-501002-70950-02 Date Collected NA <br /> LCS Matrix Water Date Received NA <br /> Date Extracted* NA <br /> Date Analyzed 7111100 <br /> Laboratory Control Sample/Duplicate Laboratory Control Sample Summary <br /> BTEX and TPH as Gasoline <br /> Sample Name Dup Lab Control Sample Units ug/L(ppb) <br /> Lab Code 5200710-LCS2 GC 5200710-DLCS2 GC03 Basis NA <br /> Test Notes <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis True Value ResuIt Acceptance Percent Result <br /> Analyte Method Method LCS DLCS LCS DLCS LCS DLCS Limits Difference Notes <br /> Benzene EPA 5030 8021B 25 25 250 25 5 100 102 75-135 2 <br /> Toluene EPA 5030 8021B 25 25 242 247 97 99 73-136 2 <br /> Ethylbenzene EPA 5030 8021B 25 25 23 1 23 6 92 94 69-142 2 <br /> IGasoline EPA 5030 CA/LUFT 500 500 499 486 100 97 75-135 3 <br /> E <br /> E <br /> E <br /> E <br /> E <br /> E A roved B IcO <br /> pp Y Date <br /> IDLCS1020597p <br /> Page 36 <br />