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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> SClient EMCON Service Request: L9702274 <br /> Prolet.t 2 I'M STOC kTON/#20805-1 14 008/T0#20791 00 Date Collected: 6130197 <br /> Sample M.iti w V ipor Date Received: 711/97 <br /> Date Extracted. NA <br /> Date Analyzed: 7/2197 <br /> BTEX acid Total Volatile Hydrocarbons <br /> EPA Methods 8020/Modified 8015 <br /> Sample Name INFLUENT <br /> Lab Code L9702274-001 <br /> MRL% Results <br /> mg/m3 uL/L(ppmv) mg/m3 uL/L(ppmv) <br /> Benzene 0 4 0 1 l 2 04 <br /> Toluene 04 t1 1 180 47 <br /> Ethvlbenzene 05 0 1 61 14 <br /> Xylenes Total 09 0 2 690 160 <br /> . Total Volatile H�drocarbons <br /> Cl -C5 12 5 **<120 **<50 <br /> C6- C12* 20 5 4000 960 <br /> * TPH as gasoline is defined as C6 (benzene)through Cl2 (dodecane) and uses a <br /> molecular a eight of 100 to calculate the mg/m3 <br /> ** MRL is clef,iced because of matrix interferences and because the sample required diluting <br /> 1.457102194 <br /> Page 3 <br />