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RISC Manual Version 4 0 <br /> • <br /> Table H-4.Volatilization Factors,Leaching Factor, <br /> and Effective Diffusion Coefficients <br /> (Page 2 of 3) <br /> VF�.p Volatilization factor from groundwater to indoor(enclosed space)air <br /> [(mg/m3air)/(mg/l H2O)] <br /> Hws gw <br /> -[ ER LB X101 1 <br /> -� <br /> wv'P — 1+[p&f1Lg_ + yD:'L� m3 <br /> LB {DeL,ILcrack)17 <br /> VFw..b Volatilization factor from groundwater to outdoor(ambient)air <br /> [(mg/m3atr)/(mg/l H2O)] <br /> H 3 <br /> I+ <br /> 1 <br /> VFwnma �' T� s L x 10 m3 <br /> t+ iJ'.' air gw <br /> WD-*e <br /> LF,„, Leaching factor from subsurface soil to groundwater <br /> [(mg/1 H20)/(mg/kg soil)] <br /> Ps cm3kg <br /> LFA,„ = U�S� x 1 g <br /> [0.+ksps+HB.] 1+ <br /> IW <br /> C,at Soil concentration at which dissolved pore-water and <br /> vapor phases become saturated <br /> [(mg/kg soil)] <br /> 1 <br /> C., S [0.s +k,p,+HB.] x g <br /> cm <br /> • <br /> H-20 <br />