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'. <br /> COLUMBIA ANALYTICAL SERVICES INC <br /> - -'. <br /> QA/QC Report <br /> Client EMCON Associates Date Received 06/11/93 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ93-0776 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> pg/l- (ppb) <br /> Sample Name MW-1 (54) <br /> Date Analyzed 06/14/93 <br /> i <br /> Percent Recovery <br /> EPA <br /> Spike Sample Spike Result Acceptance <br /> Analyte_ Level Result MS DMS MS DMS Criteria <br /> 1,1-Dichloroethene 50 ND 4 62 456 92 91 28-167 <br /> Trichloroethene 5 0 ND 4 61 480 92 96 35-146 <br /> Tetrachloroethene 5 0 ND 4 73 4 65 95 93 26-162 <br /> I <br /> • <br /> Approved by Date <br /> 15 <br />