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COL ANALYTICAL ERVICES INC. <br /> COLUMBIAS <br /> QA/QC Report <br /> Client AMERCO Real Estate Company Service Request: L9703331 <br />' Project U-Haul Stockton/709-50 Date Collected. NA <br /> Sample Matrix- Water Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> Volatile Organic Compounds <br /> Prep Method EPA 5030 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-Da 4-Bromofluombenzene <br /> IMW-1 L9703331-001 97 99 99 <br /> MW-2 L9703331-002 98 98 99 <br /> MW-3 L9703331-003 100 102 100 <br /> MW-4 L9703331-004 96 101 101 <br /> MW-5 L9703331-005 98 101 100 <br /> I MW-6 L9703331-006 96 103 103 <br /> MW-7 L9703331-007 104 105 99 <br /> MW-8 L9703331-008 100 99 102 <br /> Method Blank L971006-MB 108 99 99 <br /> Method Blank L971006-MBI 102 98 103 <br /> Batch QC L9703269-OOIMS 97 98 99 <br /> IBatch QC L9703269-OOIDMS 97 105 100 <br /> CAS Acceptance Limits 70-130 88-110 86-115 <br /> FApproved By Date b <br /> SU3 31 VO7g <br /> 0 <br /> 03331 VOA FFW] SUR 1018! Pipe No <br />