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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client EyICON Service Request: 5950534 <br /> Project -kRCO Factlu% No 2093/EMCON Project No 1775-706 001 Date Analyzed: 5/4/95 <br /> Initial Calibration Verification (ICV) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/CaIiforYua DHS LUFT Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Analyte V.ilue Result Recovery Limits <br /> Ben7enC 25 260 104 85-115 <br /> Toluene 25 25 5 102 85-115 <br /> Ethvlbcnzcnc 25 26 0 104 85-115 <br /> Xvlenes Total 75 771 103 85-115 <br /> Gasoline 250 239 96 90-110 <br /> Approved By Date <br /> ICV25A21060194 <br /> 0574 XiS wgbftpW 5110193 <br /> P�i+No- <br /> 1921 Ringwood Avenue + 5on Jose California 95131 • Teieohone 408/437-2400 + Fax 4081437-9056 <br />