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Table 6. Comparison of COPC Concentrations in Groundwater and Groundwater ESLs, Chevron Fuel Terminal 1001621, Banta, California <br /> Concentration ESL-Commercial/Industrial Land Use <br /> Arithmetic Vadose-Zone Soil Type <br /> Low/Moderate <br /> Chemical Maximum Average High Permeability Permeability <br /> Benzene 310 134 1,800 6,400 <br /> Eth (benzene 36 16 NA NA <br /> Methyl-tert-butylether 240 99 80,000 150,000 <br /> Toluene 5 3 530,000 530,000 <br /> .Xylenes 95 36 160,000 160,000 <br /> Notes: <br /> Concentration units are in micrograms per Liter(Ng/L). <br /> ESL=Groundwater Environmental Screening Level for Evaluation of Potential Vapor Intrusion Concerns. <br /> NA=Not available. <br /> 7/18/2007 <br /> G:\DIV 11\D0007\1001621_004711100_Tier I RBCA Evaluation Tables.As Page 1 of 1 <br />