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COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client B1,1e,Eliviromnental Service Request 52000486 <br /> Project U-H,A)l#170950 SCl/002-70950 Date Collected NA <br /> Sample Mati ix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> BTEX, MTBE and TPH as Gasoline <br /> Prep Method FPA 5030 Units PERCENT <br /> Analysis Method 8021B CA/LUFT Basis NA <br /> Test Percent Recovery <br /> Sample Name Lab Code Notes a,a,a-Tntluorotoluene a,a,a-Tnfluorotoluene <br /> MW-la-0200 52000486-001 71 100 <br /> MW-2a-0200 52000486-002 101 102 <br /> MW-3a-0200 52000486-003 82 88 <br /> MW-4b-0200 52000486-004 72 100 <br /> MW-5a-0200 52000486-005 100 99 <br /> MW-6a-0200 52000486-006 85 83 <br /> EMW-8a-0200 S2000486-007 100 94 <br /> MW-9a-0200 S2000486-008 97 100 <br /> MW-7-0200 52000486-009 101 101 <br /> MW-6b-0200 52000486-010 83 105 <br /> Tnp Blank S2000486-012 100 <br /> 99 <br /> BATCH QC 52000481-003MS 96 109 <br /> I BATCH QC 52000481-003DMS 98 106 <br /> Lab Control Sample S200210-LCS 96 110 <br /> Method Blank 5200210-WB 1 100 104 <br /> Method BIank 5200211-WB 1 104 102 <br /> ICAS Acceptance Limits 70-130/ 70_130/ <br /> Approved By DateV. <br /> SURV020797p <br /> IPage 35 <br />