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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> CI►cnt ARCO Products CompanN Service Request- S9700501 <br /> Project 2 168 STOCKTON/20805-146 01O/TO#20682 00 D.kte Collected: 3/20/97 <br /> S.tmple Matt IN W Date Received. 3/21197 <br /> Date Extracted: NA <br /> Date Analyzed: 3/21/97 <br /> BTEX,►nd Total Volatile Hydrocarbons <br /> EPA Methods 5030/8020/Modtfted 8015 <br /> Sample Name I NPLUENT <br /> Lab Code 59700501-00 t <br /> MRL` Results <br /> ►ng/m3 uL/L (ppmv) mg/m3 uL/L (ppmv) <br /> Benzene 04 0 2 190 60 <br /> Toluene 0 4 0 1 950 250 <br /> Ethvibenzene 05 0 i 120 28 <br /> Xvlenes Total 09 0 2 770 180 <br /> Total Volatile HNdrocarboiis <br /> Cl - 05 12 5 4400 1900 <br /> C6 -C12 20 5 14000 3400 <br /> TPH as Gasoline` 20 5 14000 3400 <br /> Methyl tel t-But-,I Ether ; () 5 100 28 <br /> * TPH as gasoline is defined as C6 (benzene) through C12 (dodecane) and uses a <br /> molecular weight of 100 to c.11culate the ppmv <br /> 1 L V 102194 <br /> Page 3 <br />