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COLUMBIA ANALYTICAL SERVICES,INC. <br /> Analytical Report <br /> *t. ARCO Products Company Service Request: 59600993 <br /> Pj ct. 2130 Stockton/#20805-114 006/TO#18957 00 Date Collected: 6/18196 <br /> Sample Matna: Air Date Received: 6119196 <br /> Date Extracted: NA <br /> Date Analyzed- 6120196 <br /> BTEX and Total Volatile Hydrocarbons <br /> EPA Methods 5030/8020/Modified 8015 <br /> Sample Name Influent <br /> Lab Code 59600993-001 <br /> MRLs Results <br /> mg/m3 uL./L(ppmv) mg/m3 uL,/L(ppmv) <br /> Benzene 05 0 2 3 3 10 <br /> Toluene 0 5 01 150 40 <br /> Ethylbenzene 0 5 01 40 9 2 <br /> Xylenes,Total 1 0 2 290 67 <br /> 41CVolatile Hydrocarbons <br /> I -C5 10 5 190 46 <br /> Cb-C12 20 5 2,100 510 <br /> TPH as Gasoline* 20 5 2,100 510 <br /> I <br /> I <br /> I <br /> i <br /> * TPH as gasoline is defined as C6 (benzene)through C12 (dodecane)and uses a <br /> molecular weight of 100 to calculate the ppmv <br /> 102394 <br /> Page 3 <br />