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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 /> t� <br /> Compound Concentration m Ik Llk unitless Koc *foc Max Sail/Kd <br /> P_ —_- -- _ (-9_g) —( _ 9) _( )_ _(-o-_ _) ___(- )__ E <br /> Benzene Not Detected 83 0 005 -0 4� Not Applicable _Ij <br /> �i Toluene 017 300 0 005 1 5 Oil <br /> 4 Ethylbenzene-- - --- 2 3 -- 1100 0 005 5 5 ---- O142 _ <br /> _ .i <br /> Xylenes __�— 2 2 240 1 0 005 1 2 -� _ 1 83 <br /> Explanation _ Koc = soil-water partition coefficient <br /> foc = fraction organic carbon content <br /> Kd = distribution coefficient <br /> References Koc values from Texas 1994 RSCA Guidance Document <br /> based on various EPA sources <br /> foc value from Rawls, 1983 <br /> leach wk4 <br /> I <br /> FLUOR DANIEL GTI <br />