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t <br /> TABLE 20 <br /> ESTIMATION OF Kd(SOIL/WATER PARTITION COEFFICIENT) FOR VOCs IN SOILS <br /> US CAN-WELTY ROAD <br /> 35275 Welty Road <br /> LVernalis,California <br /> Koc foc Kd <br /> COPC Cs(mg/kg) (cm3/g) (default=0.02) (cm3/g) <br /> BTEX <br /> Benzene 0.0050 145.8 0.02 2.9 <br /> Toluene 0.033 233.9 0.02 4.7 <br /> Eth lbenzene 3.3 446.1 0.02 8.9 <br /> Total Xylenes 9.5 382.9 0.02 7.7 <br /> PAHs <br /> Acenaphthene 0.00067 5027 0.02 100.5 <br /> Anthracene 0.11 16,360 0.02 327 <br /> Benzo(a)anthracene 0.0061 NA NA NA <br /> Benzo(a)pyrene 0.0063 NA NA NA <br /> Benzo b fluoranthene 0.013 NA NA NA <br /> Benzo(g,h,i)perylene 0.0018 NA NA NA <br /> Benzo k fluoranthene 0.00067 NA NA NA <br /> Chrysene 0.44 NA NA NA <br /> Dibenz a h anthracene 0.00067 NA NA NA <br /> Fluoranthene 0.65 NA NA NA <br /> 1 Fluorene 0.6 9,160 0.02 183 <br /> Indeno 1,2,3-c d ene 0.00067 NA NA NA <br /> Naphthalene 3.6 1,544 0.02 30.9 <br /> Phenanthrene 2.3 NA NA NA <br /> Pyrene 0.067 NA NA I NA <br /> Equation: <br /> Kd=soil/water partition coefficient,cm3/g(or,L-water/kg-soil) =Koc x foc <br /> Where: <br /> Koc=organic carbon partition coefficient,L/kg or cm3/g <br /> ' foc=fraction of organic carbon(default=0.02; Source:PEA Manual) <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene and total xylenes <br /> cm'/g=Cubic centimeter per gram <br /> COPC=Constituent of potential concern <br /> mg/kg=Milligram per kilogram <br /> L/kg= Liter per kilogram <br /> NA=Not applicable because chemical is considered non-volatile(PEA Manual) <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> EE uation Source: <br /> PEA Manual,Figure 2.5. <br /> Page 1 of 1 SAIC <br />