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S S <br /> COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client- EMCON Associates Date Received 09/02/93 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ93-1 101 <br /> 1 ARCO Facility No 2168 Sample Matrix Water <br /> 1 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> ,ug/L (ppb) <br /> 1 <br /> Sample Name MW-3 (53) <br /> Date Analyzed 09/15/93 <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 3 30 3 52 66 70 <br /> 28-167 <br /> Trichloroethene 50 ND 436 461 87 92 35-146 <br /> Tetrachloroethene 50 ND 3 64 3 80 72 76 26-162 <br />• <br /> Approved by r l /�� lrjd ih <br /> Date <br /> A 0•7 Q .16 <br />