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♦1 <br /> COLUM 31A ANALYTICAL SERVICES,INC. <br /> Analytical Report <br /> Client. ARCO Products company Service Regmest S9702474 <br /> Project: 20805-114 009/70#2079100/2130 STOCKTON Date Colleeiak NA <br /> Sample Matrix: Au Date Reaesve& NA <br /> BTEX and Total Volatile Hydrocarbons <br /> Sample Name Method Blank Ute; mWm3 <br /> Lab Code 5971126-VBI Basw NA <br /> Test Notes <br /> Prop Analysis Dilution Date Date Result <br /> Analyte Method Method MRL Factor Extracted Analyzed Resist Notes <br /> Benzine 5030 8020 04 1 NA 11/26/97 ND <br /> Toluene 5030 8020 04 1 NA 11!26/97 ND <br /> Ethylbmtene 5030 8020 05 1 NA 11/26/97 ND <br /> Xylenes,Total 5030 8020 09 1 NA 11/26/97 ND <br /> Total Volatile Hydrocarbons. <br /> C1-05 5030 8015M 12 1 NA IU26/'9'1 ND <br /> C6-C12 5030 8015M 20 1 NA I lf2"7 ND <br /> TPH as Gasoluw* 5030 8015M 20 1 NA 11/26/97 ND <br /> • TPH as gasoline is defused as C6(benzene)through C 12(dodecane)and uses a <br /> molecular weight of 100 to calculate the ppmv <br /> I� lS2sl000Sg1p <br /> Page 7 <br />