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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client ARCO Products Companv Service Request: 5951357 <br /> Project 1775-706 001 /TO# 17075 00 /2093 Tracv Date Analyzed: 11/6/95 <br /> Initial Calibranon Verification(ICV) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Caltforma DHS LUFT Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> ,lnaivte Value Result Recovery Limits <br /> Benzene 25 24 t 96 85-115 <br /> Toluene 25 240 96 85-115 <br /> Ethvlbenzene 'S 23 7 95 85-115 <br /> `Cvlenes Total 75 71 9 96 85-115 <br /> Gasoline 250 251 100 90-110 <br /> ri <br /> • <br /> IC.V23A11060194 <br /> Page 6 <br />