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COLUMBIA ANALYTICAL SERVICES, INC - <br /> QA/QC Report <br /> Chent' EMCON Associates Date Received: 11/01/93 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ93-1339 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> Matrix Sptke/Duplicate Matrix Spike Summary <br /> TPH as Gasoline <br /> EPA Methods 5030/California DHS LUFT Method <br /> N9/L (ppb) <br /> Date Analyzed 11/10/93 <br /> Percent Recovery <br /> Spike CAS <br /> Spike Sample Result Acceptance <br /> Analyte Level Result MS DMS MS DMS Criteria <br /> TPH as Gasoline 250 NO 229 227 92 91 76-130 <br /> Approved by r_"lU1 C� �QQ c.� _ Date a 3 <br /> O'7 4 0 14 <br />