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COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> aClient: EMCQN Associates Date Received 11101/93 <br />! Project. EMCON Project No OG71-038 01 Service Request No SJ93-1339 <br /> ARCO Facility No 2168 Sample Matrix. Water <br /> I , <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> TPH as Gasoline <br /> EPA Methods 50301California OHS LUFT Method <br /> u9/L (Ppb) <br /> I <br /> Date Analyzed 11/10/93 <br /> I <br /> Percent Recovery <br /> Spike CAS <br /> Spike Sample Result Acceptance <br /> Analyte Level Result MS DMS MS DMS Criteria <br /> I. TPH as Gasoline 250 ND 229 227 92 91 76-130 <br /> I <br /> I <br /> I <br /> I Approved by -q3Date <br /> __ _ 14 <br />