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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> iClient: ARCO Products Company Service Request. 59501673 <br /> Protect 080-5-114 004 /TO# 2130-95-i Date Collected. 12/21/95 <br /> Sample Matrix Vapor Date Received 12/22/95 <br /> Date E•ti acted NA <br /> Date Analyzed, 12/22/95 <br /> Duplicate Summary <br /> BTEX and Total Volatile Hvdrocarbons <br /> Units ppmV <br /> Sample Name Influent <br /> Lab Code 59501673-001 <br /> Duplicate Relative <br /> Sample Sample Percent <br /> Analyte MRL Result Result Average Difference <br /> Benzene 0 1 <0 2 * <02 * <0 2 NA <br /> Toluene l► l 1 9 2 1 2 10 <br /> Ethvlbenzene ly l 0 5 0 5 05 <1 <br /> Xylenes Total 0 2 5 3 5 5 5 4 4 <br /> Total Volatile H%drocarbons <br /> C1 -C4 Hvdrocarbons 5 <10 * <10 * <10 NA <br /> Cs -CK HNdrocarbons 5 360 360 360 <1 <br /> C9 - Cl: H%drocarbons 5 28 28 28 <1 <br /> Gasoline Fraction(C,-C)2) 15 380 380 380 <1 <br /> * Raised MRL due to high analvte concentration requiring sample dilution <br /> DUP157060144 <br /> Page 7 <br />