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' TABLE 23 <br /> ESTIMATION OF Kd (SOILIWATER PARTITION COEFFICIENT)FOR VOCS IN SOILS <br /> SURLAND HOMES—BRIDLE CREEK <br /> ' Tracy, California <br /> Koc foc Kd <br /> Constituent in Soil Cs (mg/kg) (cm31g) (default=0.02) (cm31g) <br /> BTEX <br /> Toluene 0.028 220 0.02 4.4 <br /> ' Eth lbenzene 1.5 257 0.02 5.1 <br /> Xylene(s) 1.5 240 0.02 4.8 <br /> PAHs <br /> ' Acenaphthene 0.17 4600 0.02 92.0 <br /> Anthracene 0.090 12589 0.02 252 <br /> Benzo(a)anthracene 0.032 NA NA NA <br /> ' Benzo(a)pyrene 0.0046 NA NA NA <br /> Benzo b flumanthene 0.024 NA NA NA <br /> Benzo ,h,i er lene 0.040 NA NA NA <br /> Chrysene 0.081 NA NA NA <br /> Dibenz a,h anthracene 0.0068 NA NA NA <br /> Fluoranthene 0.027 NA NA NA <br /> Fluorene 0.48 7900 0.02 158 <br /> Naphthalene 0.36 1288 0.02 25.8 <br /> Phenanthrene 1.8 NA NA NA <br /> Pyrene 0.074 NA NA NA <br /> iEquation: <br /> Kd=soil/water partition coefficient,cm3/g(or,L-waterlkg-soil) =Koc x foc <br /> ' Where: <br /> Koc=organic carbon partition coefficient,L/kg or cm319 <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 centimeters per gram <br /> mg/kg W Milligrams 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 /> Note: <br /> Metals were not included on this table because they are not volatile. <br /> Equation Source: <br /> PEA Manual,Figure 2.5. <br /> rr��rl<1`ro <br /> Page I of 1 From Silence to Solutions <br />