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COLUMBIA ANALYTICAL SERVICES,INC. <br /> • QA/QC Report <br /> Client. ARCO Products Company Service Request: S951020 <br /> Protect 1775-234 001 /TO# 17075 00 /2168 Stockton Date Analyzed: 8/24/95 <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 Resuit Recovery Limits <br /> Benzene 25 23 6 94 85-115 <br /> Toluene 25 226 90 85-115 <br /> Ethylbenzene 25 22 8 91 85-115 <br /> Xylenes Totai 75 66 0 88 85-115 <br /> Gasoline 250 234 94 90-110 <br /> lCV25ALIM194 <br /> Page I1 <br />