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f <br /> COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Oftent AMERCO Real Estate Company Service Request L2003109 <br /> IProject U-Haul/#709-50/002-70950-02 Date Collected NA <br /> Sample Matrix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> Volatile Organic Compounds <br />' Prep Method EPA 5030 Units PERCENT <br /> Analysis Method 8260B Basis NA <br /> Test P e r c e n t R e e o v e r y <br /> Sample Name Lab Code Notes Dibromofluoromethane Toluene-D8 4-Bromofluorobenzene <br /> MW-1-900-B L2003109-001 91 99 90 <br /> MW-2-900-B L2003109-002 93 98 92 <br />' MW-3-900-B L2003109-003 90 97 89 <br /> MW-4-900-B L2003109-004 92 100 90 <br /> MW-5-900-B L2003109-005 91 98 88 <br /> MW-8-900-B L2003109-008 91 96 90 <br /> Method Blank L201011-MB 94 99 91 <br /> MW-3-900-B L2003109-003MS 89 96 87 <br />' FW-3-900-B L2003109-003DMS 79 86 A3F 78 A3F <br /> ab Control Sample L201011-LCS 94 100 90 <br /> 1 <br /> 1 <br /> CAS Acceptance Limits 70-130 88-110 86-115 <br /> A3F Outside of acceptance limits Since the reduced percent recovery is for the DMS <br /> and since the percent recovery for all of the associated samples is acceptable,it is the opinion <br />' of CAS that the quality of the sample data has not been significantly affected <br /> . The LCS was acceptable,therefore,data was approved <br /> Approved By Date �� 0 <br /> 8260WOXY XLT <br />' 03109VOA Ag I-SU 10/26M <br />