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COLUMBIA ANALYTICAL SERVICES,INC ''jf t <br /> ---- �� <br />�> Client EMCON Associates QA/QC Report Service Request. 5950196 <br /> Prosect ARCO Facility No 548/EMCON Project No 1775-206 01 Date Analyzed 2/27/95 <br /> Initial Calibration Verification(ICV) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Analyte Value Result Recovery Limits <br /> Benzene 25 25 9 104 85-115 <br /> Toluene 25 248 99 85-115 <br /> Ethylbenzene 25 25 3 101 85-115 <br /> Xylenes, Total 75 74 2 99 85-115 <br /> Gasoline 250 258 103 90-110 <br /> Approved By - Date <br /> ECV25AU060194 <br /> Page 6 <br />