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.s <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> i <br /> QA/QC Report <br /> Client ARCO Products Company Service Request: 5970I96I <br /> Project 20805-114 008/TO#20791 0012130 STOCKTON Date Collected: NA <br /> LCS Matrix Air Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: 1011197 <br /> Laboratory Control Sample Summary <br /> TPH as Gasoline <br /> Sample Name I ab Control Sample Units mg/m3 <br /> Lab Code 5971001-LCS Basis NA <br /> Test Notes <br /> CAS <br /> Percent <br /> Recovery <br /> Prep Analysis True Percent Acceptance Result <br /> Analyte Method Method Value Result Recovery Limits Notes <br /> Gasoline 5030 9015M 200 190 95 60-140 <br /> i <br /> U,s1020501p <br /> Page 12 <br />