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f� of •1 I <br /> COLUMBIA ANALYTICAL SERVICES, INC. <br /> 0A/QC Report c <br /> Client: EMCON Associates Date Received. 06/09/93 <br /> Project: EMCON Project No. OG71-033.01 Service Request No.: SJ93-0761 <br /> ARCO Facility No. 548 <br /> Initial Calibration Verification <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Pg/L tPpbi <br /> Date Analyzed: 06/15/93 <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Analyte Value Result Recovery Criteria <br /> Benzene 25. 25.8 103. 85-115 <br /> Toluene 25. 27.2 109. 85-115 <br /> Ethylbenzene 25. 26.3 105. 85-115 <br /> Total Xylenes 75, 81.7 109. 85-115 <br /> TPH as Gasoline 250. 256. 102. 90-110 <br /> Approved by: 1 Date: <br /> h <br />