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COLUMBIA ANALYTICAL SERVICES,INC <br /> IQA/QC Report <br /> OLent AMERCO Real Estate Company Service Request L2003109 <br /> Project U-Haul/9709-501002-70950-02 Date Collected NA <br /> Sample Matrix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> 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 c o v e r y <br /> Sample Name Lab Code Notes Dibromofluoromethane Toluene-138 4-Bromofluorobenzene <br /> MW-6-900-B L2003109-006 94 102 91 <br /> MW-7-900-B L2003109-007 92 100 92 <br /> Method Blank L201011-M131 92 99 89 <br /> Method Blank L201012-MB 91 97 89 <br /> Lab Control Sample L201011-LCS1 95 99 92 <br />' Duplicate Lab Control Sample L201011-DLCS1 95 101 91 <br /> 10 <br /> I <br /> CAS Acceptance Limits 70-130 88-110 86-1 l5 <br /> A3 Outside of acceptance limits because of matrix effects This sample was analyzed a second time and <br /> again produced unacceptable recovery values The results from the initial analysis are reported <br /> r <br /> Approved ByDate <br /> a�el6u <br /> 8260WOXY XLT <br />' 07109VOA A <br /> 32-S 10126!00 <br />