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TABLE 4-4 , <br /> PHYSICAL CHEMICAL PROPERTIES OF THE <br /> CHEMICALS USED IN RISK ANALYSIS <br /> YELLOW FREIGHT, STOCKTON <br /> Benzene Ethylbenzene Toluene Xylene <br /> Solubility' 1,750 152 _ 535 " 7 198 , <br /> (mg/1) , <br /> Adsorption Coefficient' " ` 83- '1100' 300 240 <br /> Koc (ug/goc/ug/ml) <br /> Henry's Law Constant' 5.58E-03 6.42E-03 6.36E-03 `7.04E-03 <br /> ((mg/l)/(mg/l)) j <br /> Decay Rate (1/days)' 0 0:..� 0 _ 0 p <br /> Diffusion Coefficient in , ,'0.087 0.066 0.078 0.072 <br /> Air <br /> (cm'/se <br /> Diffusion Coefficient_in 9.8E-06 6.8E-06 &6E-06 7.8E-06 <br /> Water (cm2/SeC)4 <br /> Skin Permeability = 0.1 9 1.0 ' ` 1.0 0.08 <br /> Constant (cm/hr)' <br /> EPA 1986. Superfund Public Health Evaluation Manual <br /> 2 Verschueren 1983. Handbook of Environmental Data on Organic Chemicals <br /> s Degradation rates were set to zero for soil and groundwater <br /> ° EPA 1988. Superfund Exposure Assessment Manual <br /> 5 EPA 1992. Dermal Exposure Assessment: Principles and Applications <br /> `i <br /> f <br /> S:\LDC\YELLO.Rn May 4, 1995 <br /> ��, Ii <br />