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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client Blaes Environmental Service Request 52001904 <br /> Project U-HAUL#709-501002-70950-02 Date Collected NA <br /> Sample Matrix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> Fuel Oxygenates <br /> Prep Method EPA 5030A Units PERCENT <br /> Analysis Method 8260 Basis NA <br /> I Test P e r c e n t R e c o v e r y <br /> Sample Name Lab Code Notes Dibromotluoromethane Toluene-D8 4-Bromofluorobenzene <br /> MW-5-0600 52001904-012 97 95 92 <br /> 5A-0600 S2001904-013 96 95 93 <br /> 5B-0600 S2001904-014 101 101 100 <br /> MW-6-0600 52001904-015 94 96 86 <br /> I 6A-0600 S2001904-016 100 97 95 <br /> 6B-0600 S2001904-017 91 93 88 <br /> MW-8-0600 52001904-018 102 99 99 <br /> 8A-0600 S2001904-019 96 96 96 <br /> 9A-0600 52001904-020 92 90 87 <br /> 9B-0600 52001904-021 91 94 90 <br /> EB-0600 S2001904-022 98 96 95 <br /> Method Blank(MS02) S200711-WB1 88 84 80 <br /> Lab Control Sample S200707-LCS 110 113 106 <br /> Lab Control Sample S200707-DLCS 101 100 95 <br /> l <br /> CAS Acceptance Limits 57-167 62-138 62-140 <br /> Approved By lc� Date 713 40 <br /> NIA <br /> • SE1R3/020597p <br /> I <br /> Page 69 <br />