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1 <br /> COLUMBIA ANALYTICAL SERVICES,INC <br />' QA/QC Report <br /> Client Blaes Environmental Service Request S2001904 <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 /> BTEX and TPH as Gasolme <br /> tPrep Method EPA 5030 Units PERCENT <br /> Analysis Method 8021B CA/LUFT Basis NA <br /> Test Percent Recovery <br /> Sample Name Lab Code Notes a,a,a-Tufluorotolucne a,a,a-Tnfluorotoluene <br /> MW-1-0600 S2001904-001 107 1I5 <br /> 1A-0600 52001904-002 94 123 <br /> 1B-0600 52001904-003 108 108 <br /> MW-2-0600 52001904-004 97 108 <br /> 2A-0600 52001904-005 106 104 <br /> 2B-0600 52001904-006 90 125 <br /> MW-3-0600 52001904-007 106 102 <br /> 3A-0600 52001904-008 97 107 <br /> 3B-0600 52001904-009 76 104 <br /> ! MW-4-0600 52001904-010 97 104 <br /> 4B-0600 52001904-011 87 111 <br /> Method Blank 5200708-WB I GC 06 106 105 <br /> Method Blank 5200710-WB1 GC 06 104 105 <br /> BATCH QC 52001905-OOlMS 103 118 <br /> BATCH QC 52001905-001 DMS 101 103 <br /> Lab Control Sample 5200708-LCS GC 06 92 102 <br /> CAS Acceptance Limits 70-130 70-130 <br /> 7 0 <br /> Approved By Date l 3 0 <br /> ISUR2I020397p <br /> Page 37 <br />