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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> i <br /> Client: ARCO Products Company Service Request: S951324 <br /> Project: 1775-237.001 /TO# 17075.00/2186 Stockton Date Analyzed: 11/3/95 <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 Result Recovery Limits <br /> ' Benzene 25 2 { <br /> 3.5 )4 85-115 <br /> Toluene 25 24.5 98 85-115 <br /> Ethylbenzene 25 24.3 97 85-115 <br /> Xylenes,Total 75 75.6 101 85-115 <br /> Gasoline 250 246 98 90-110 <br /> IC V25AU060194 <br /> Page 6 <br />