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• i � <br /> Table 5 <br /> Maximum Calculated Groundwater Concentrations from Leaching/Partitioning <br /> Former Drake Property <br /> 26485 Thornton Road <br /> Thornton, California <br /> Maximum Water <br /> Maximum Soil Koc foc Kd (L/kg) Concentration (mg/L) <br /> Compound_ Concentration (mg/kg) (L/kg) Koc *foc Max Soil/Kd <br /> Benzene Not Detected 83 0 005 0 4 Not Applicable <br /> _Toluene 017 300 0 005 1 5 Oil <br /> Ethylbenzene —_ 2 3 1100 0 005 55 042 <br /> Xylenes 22 240 1 0 005 1 2 1 83 <br /> Explanation Koc= soft-water partition coefficient <br /> foc = fraction organic carbon content <br /> Kd = distribution coefficient <br /> References Koc values from Texas 1994 RBCA Guidance Document <br /> based on various EPA sources <br /> foe value from Rawls, 1983 <br /> leach wk4 <br /> i <br /> FLUOR DANIEL GTI <br />