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i <br /> I <br /> COLUMBIA ANALYTICAL SERVICES. iNC. <br /> 7 <br /> QA/QC Report <br /> Client: EMCON Service Request: 5950650 <br />' Project- ARCO l:acility No 2130/EMCON Project No 1775-229001 Date Analyzed: 5126195 <br />' Initial Calibration Ven[ication(IC` ) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 50--0/8020/Califonua DHS LUFr Method <br /> Units ppb <br />' CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br />' Analyte Value Result Recovery Units <br /> Benzene 25 26 1 104 85-115 <br />' Toluene 25 258 103 85-115 <br /> Ethvlbcnzcnc 25 26 5 106 85-115 <br /> Xylenes Total 75 793 106 85-115 <br />' Gasoline 250 <br /> 240 96 90-110 <br /> 1 <br /> 1 <br /> Approved By Date n <br /> IC V25AL060194 <br /> 0650 XLS wgbtlrcd&6193 r = <br /> PMeNO, ,/ <br />