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r - COLUMBIA ANALYTICAL SERVICES. INC. -F <br /> T <br /> hi.. <br /> Client- EMCON Associates Date Received 08/26/92 <br /> Project EMCON Project No G71-38 01 Work Order # SJ92-1071 <br /> Arco Facility No 2168 Sample Matrix Water <br /> QA/QC Report <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> Ng/L (ppb) <br /> Sample Name MW-1 (54) <br /> Date Analyzed 09/02/92 <br /> Percent Recovery <br /> EPA <br /> Spike Sample Spike Result Acceptance <br /> Analyte Level Result MS DMS MS DMS Criteria <br /> 1,1-Dichloroethene 10 NO 11 6 138 116 138 28-167 <br /> i Trichloroethene 10 NO 11 1 11 2 111 112 35-146 <br /> Tetrachloroethane 10 NO 107 11 3 107 113 26-162 <br /> ND None Detected at or above the method reporting limit <br /> Approved by Date ^4 <br /> 13 <br />