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COLUMBIA ANALYTICAL SERVICES,INC. <br /> Analytical Report <br /> Client: ARCO Products Company Servke Request: 59702474 <br /> Projects 20805-114 OO&TO✓/2079100/2130 STOCKTON Date Collected: 11/24/'97 <br /> Sample Matra: Air Date Received: 11/26/97 <br /> HTEX and Total Volatile Hydrocarbons <br /> Sample Name INFLUENT Units mg/m3 <br /> Lab Code 59702474-001 Basis NA <br /> Test Notes <br /> Prep Analysts Dilution Date Date Result <br /> Analyte Method Method MRL Factor Extracted Analyzed Result Notes <br /> Benzene 5030 8020 04 2 NA 11/26/97 <0 8 CI <br /> Toluene 5030 8020 04 2 NA 11/26/97 140 <br /> Ethylbenzene 5030 8020 05 2 NA 11/26/97 53 <br /> Xylenes,Total 5030 8020 09 2 NA 1 MUM 320 <br /> Total Volatile Hydrocarbons <br /> Cl-C5 5030 8015M 12 2 NA l MUM 15 <br /> C6-C 12 5030 8015M 20 2 NA L M"7 1600 <br /> TPH as Gasolme4 5030 8015M 20 2 NA /1/26/97 1600 <br /> ' TPH as gasoline is defined as C6(benzem)through C 12(dodecane)and uses a <br /> molecular weight of 100 to calculate the ppmv <br /> C l The MRL was raised due to high analyte cone=tm regiurmg sample dilution. <br /> is�amosvry <br /> i <br /> E <br /> Page 3 <br />