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TABLE 16 <br /> CALCULATION OF EMISSION RATE FOR VOCs IN SOILS <br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6 <br /> Mountain House,San Joaquin County,California <br /> Ci Kd Di He Ei S Csat <br /> COPC Cs(mg/kg) (mg/kg) (cm3/ ) (cm2/sec) (atm-m3/mole) He/Kd Kd/Hc (m sec) (mg/]L-water) (mg/kg) <br /> BTEX <br /> Benzene 0.00050 5.0E-10 2.9 0.09 5.50E-03 1.9E-03 5.3E+02 1.5E-06 1,790 2,581.83 <br /> Ethylbenzene 0.055 5.5E-08 8.9 0.068 7.88E-03 8.8E-04 1.1E+03 9.7E-05 169 851.09 <br /> Xylene(s) 0.0010 1.0E-09 7.7 0.085 5.18E-03 6.8E-04 1.5E+03 1.7E-06 106 988.11 <br /> PAHs <br /> Acenaphthene 0.47 4.7E-07 100.5 0.051 1.84E-04 1.8E-06 5.5E+05 3.2E-05 3.9 357.38 <br /> Acenaphthylene 0.19 1.9E-07 NA NA NA NA NA NA NA NA <br /> Anthracene 0.17 1.7E-07 327.2 0.039 5.56E-05 1.7E-07 5.9E+06 3.1E-06 0.0434 20.15 <br /> Benza(a)anthracene 0.21 2.1E-07 NA NA NA NA NA NA NA NA <br /> Benzo(a)pyrene 0.041 4.1E-08 NA NA NA NA NA NA NA NA <br /> Benzo(k)fluoranthene 0.052 5.2E-08 NA NA NA NA NA NA NA NA <br /> Benzo(g,h,i)perylene 0.033 3.3E-08 NA NA NA NA NA NA NA NA <br /> Benzo(k)fluoranthene 0.047 4.7E-08 NA NA NA NA NA NA NA NA <br /> Chrysene 0.68 6.8E-07 NA NA NA NA NA NA NA NA <br /> Dibenz(a,h)anthracene 0.034 3.4E-08 NA NA NA NA NA NA NA NA <br /> Fluoranthene 0.079 7.9E-08 NA NA NA NA NA NA NA NA <br /> Fluorene 0.66 6.6E-07 183.2 0.044 9.62E-05 5.3E-07 1.9E+06 2.3E-05 1.69 300.39 <br /> Indeno(1,2,3-ed)pyrene 0.016 1.6E-08 NA NA NA NA NA NA NA NA <br /> Naphthalene 0.33 3.3E-07 30.9 0.060 4.40E-04 1.4E-05 7.0E+04 6.9E-05 31 819.88 <br /> Phenanthrene 4.0 4.0E-06 NA NA NA NA NA NA NA NA <br /> Pyrene 0.27 2.7E-07 NA NA NA NA NA NA NA NA <br /> Equation: <br /> 1.6 x 105XDrx x L'+ <br /> E i - <br /> 0.023 d <br /> Dry <br /> 0.284 + 0.046 x K d <br /> H, <br /> Where: <br /> Ei=average emission rate of contaminant i over the residential lot during the exposure interval,mg/sec <br /> Ci=bulk soil concentration of contaminant i;(chemical concentration in soil,mg/kg,x[10-6 kg/mg]) <br /> Di=diffusivity in air for compound i,cm2/sec <br /> He=Henry's Law constant,atm-m3/mole <br /> Kd=soil/water partition coefficient,cm3/g <br /> kw,5cep.ce fc So?,Ww <br /> Page 1 of 2 <br />