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1 <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client. AMERCO Real Estate Company Service Request L9703331 <br /> Protect U-Haul Stockton/709-50 Date Collected NA <br /> Sample Matrix: Water Date Received- NA <br /> Date Extracted. NA <br />' Surrogate Recovery Summary Date Analyzed, NA <br /> BTEX and TPH as Gasoline <br /> Prep Method EPA 5030 Units PERCENT <br /> Analysis Method 8015NV8020 Basis NA <br /> Test Percent Recovery <br /> Sample Name Lab Code Notes 4-Bromofluorobenzene 4-Bromofluorobenzene <br /> MW-1 L9703331-001 73 84 <br /> MW-2 L9703331-002 65 69 <br />' MW-3 L9703331-003 75 80 <br /> MW-0 L9703331-004 80 85 <br /> MW-5 L9703331-005 69 74 <br /> MW-6 L9703331-006 64 68 <br /> MW-7 L9703331-007 113 189 B5 <br /> MW-8 L9703331-008 66 68 <br /> Method Blank L971003-MB 88 84 <br /> Method Blank L971004-MB 65 60 <br /> Method Blank L971006-MB 61 66 <br /> Batch QC L9703255-003MS 92 83 <br /> Batch QC L9703255-003DMS 91 82 <br /> 1 <br /> CAS Acceptance Limits 60-130 60-140 <br /> B5 Not Applicable because of the sample matnx The gas chromatogram showed target <br /> components that interfered with determmathon of the surrogate The sample was not reanalyzed <br /> Approved B Date ��/ <br /> PP Y <br />' SU3331 <br /> 0V0H <br /> 03331 VOH JC] SU R2(I)i 7 Pegc Na <br />