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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client Blaes Environmental Service Request 52001404 <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 716100 <br /> Laboratory Control Sample/Duplicate Laboratory Control Sample Summary <br /> Volatile Organic Compounds <br /> Sample Name Lab Control Sample Units ug/L(ppb) <br /> Lab Code S200706-DLCS, 5200706-DLCS 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 Lumts Difference Notes <br /> 1,1-Dichloroethene EPA 5030 8260 100 100 113 115 113 115 62-145 2 <br /> Benzene EPA 5030 8260 100 100 9 61 958 96 96 77-127 <1 <br /> Trichloroethene EPA 5030 8260 10 0 100 107 109 107 109 71-119 2 <br /> Toluene EPA 5030 8260 10 0 10 0 967 9 55 97 96 76-124 1 <br /> Chlorobenzene EPA 5030 8260 100 100 9 03 900 90 90 75-I27 <1 <br /> Approved B Date <br /> pp Y <br /> DLCS/020597p <br /> Page 75 <br />