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1 <br /> COLUMBIA ANALYTICAL SERVICES,INC <br />' QA/QC Report <br /> Client Blaes Environmental Service Request 52001904 <br /> Protect 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 /> IPrep Method EPA 5030A Units PERCENT <br /> Analysis Method 8260 Basis NA <br /> Test P e r c e n t R e c o v e r y <br /> Sample Name Lab Code Notes Dibromofluoromethane Toluene-D8 4-Bromofluorobenzene <br /> I MW-1-0600 52001904-001 93 98 103 <br /> 1A-0600 52001904-002 93 98 103 <br /> 1B-0600 52001904-003 91 92 91 <br /> MW-2-0600 S2001904-004 94 95 97 <br /> I 2A-0600 52001904-005 95 96 100 <br /> 2B-0600 52001904-006 95 98 131 <br /> MW-3-0600 52001904-007 94 94 93 <br /> 3A-0600 52001904-008 93 91 93 <br /> 3B-0600 52001904-009 93 94 95 <br /> MW-4-0600 S200I904-010 94 94 94 <br /> I 4B-0600 52001904-011 92 91 80 <br /> Method Blank(MS04) 5200706-WB1 98 99 105 <br /> MethodBlank(MS02) 5200707-WB1 103 95 96 <br /> Method Blank(MSOI) 5200707-WB2 102 100 92 <br /> Method Blank(MS04) 5200706-WB2 95 97 98 <br /> Lab Control Sample S200706-LCS 99 99 105 <br /> Lab Control Sample 5200706-DLCS 98 99 104 <br /> CAS Acceptance Limits 57-167 62-138 62-140 <br /> I <br /> Approved By IS Date <br /> SUR3f020597p <br /> I <br /> E <br /> Page 68 <br />