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? 10411/1996 14.44 4084379356 CAS/SAN -GSE PAGE 11 <br /> COLUMBIA ANALYTICAL SERVICES.INC. <br /> QA(QC Report <br /> Chart: ARCO Products Company Service Requelt: 59601406 <br /> Project: 2130 STOCKMN/20805.114 0061TO#18957 00 Date Collected: S12b/96 <br /> LCS MIltrk: Vapor Daft Received: 8!27196 <br /> Date Extracted: NA <br /> Date Analyzed: 8127196 <br /> Laboratory Control Sample teary <br /> BTEX and Total Volatile Hydrocarbons <br /> EPA Methods 5030/8020JModiSed 9013 <br /> Units uL1L(ppmv) <br /> CAS <br /> Perecnt <br /> Recovery <br /> True Percent Acceptance <br /> Analyte Valve Re:Atlt Recovery Limits <br /> Benzene 73 65 87 60-140 <br /> Toluene 64 6 2 97 60-140 <br /> Ethylbenzene S S 59 103 60-140 <br /> i <br /> I LCsrlrs� <br /> Pap 10 <br />