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TABLE 4 <br /> FLOW RATES AND ANALYTICAL RESULTS OF AIR SAMPLE ANALYSIS <br /> ARCO Service Station No. 548 <br /> 1612 Hammer Lane, Stockton,California <br /> Flow Rate"Vacuum Sample Analyses (mglm) <br /> Date (cfm) ("WC) Location TPHg Benzene Toluene Ethylbenzene Xylenes MtBE <br /> T-Influent 18 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> 3120/03 48 45 Influent 11 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> Effluent <10 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> T-Influent 13 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> 04/15/03 50 53 Influent 13 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> Effluent <10 <0.10 <0.10 <0.10 <0.10 <0.50 <br /> T-Influent 44 <0.10 <0.10 0.2 0.5 <0.40 <br /> 05/28/03 50 38 Influent 38 <0.10 <0.10 0.2 0.4 <0.40 <br /> Effluent <10 <0.10 <0.10 <0.10 0.7 <0.40 <br /> T-Influent 24 <0.10 0.11 <0.10 <0.10 <0.40 <br /> _Q6/24/03 50 34.4 Influent 24 <0.10 <0.10 <0.10 0.2 <0.40 <br /> �+ Effluent <10 <0.10 <0.10 <0.10 <0.10 <0.40 1 <br /> �t, T-Influent 1100 3.5 83.0 24.0 140.0 2.20 <br /> X09/29/2003 62.6 28.5 Influent 1200 3.4 83.0 25.0 160.0 2.10 <br /> Effluent /"/'12 <0.1 <0.1 <0.1 <0.1 <0.40 <br /> Notes: <br /> = Weathered Gasoline C6-C12+Unidentified Hydrocarbos C6-C12 <br /> " = f=low rates are averages between sampling events(before dilution air) <br /> 1 = Hydrocarbon pattern does not resemble pattern of the requested fuel. <br /> NR = Not reported <br /> T-influent = Influent to catox after dilution <br /> TPH = total petroleum hydrocarbons <br /> WC = inches Water Column <br /> i <br /> K.-MprocessW5 BP ARCQ1005481Quartedy\Arco_0548_O&M-30mr03 Page 3 of 3 <br />