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COLUMBIA ANALYTICAL SERVICES, INC <br /> . Client EMCON Associates Date Received 02/13/92 <br /> Project EMCON Project No G71-17 01 Work Order # SJ92-0154 <br /> Arco Facility No 434 Sample Matrix Water <br /> QA/QC Report <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> TPH as Gasoline <br /> EPA Method 5030/DHS LUFT Method <br /> V9/L {ppb} <br /> Sample Name W- 78 <br /> Date Analyzed 02/18/92 <br /> Percent Recovery <br /> Sample Spike Result Acceptance <br /> Analytes Spike Level Result MS DMS MS DMS Criteria <br /> TPH as Gasoline 2,500 430 2,930 2,900 100 99 70-140 <br /> TPH Total Petroleum Hydrocarbons <br /> Approved byAeltliv Date �Z? <br /> 9 <br /> -4 4 ori r • t.... I..r. rel L.. .. .. CJS A'1� • TpSp�l�nna d118IA17 2d0() 9 rcy QOQ1d Z7 0356 <br />