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INTERMEDIATE CALCULATIONS SHEET <br /> Table A-2. Benzene Intercalcs Worksheet <br /> Vadose Vadose zone Vadose zone Vadose zone Vadose zone Total Air-filled Water-filled Floor- <br /> Source- zone soil effective soil soil soil Thickness of porosity in porosity in porosity in well <br /> building air-filled total fluid intrinsic relative air effective vapor capillary capillary capillary capillary seam <br /> separation, a <br /> Porosity, saturation, permeability, <br /> bility, permeability, permeability. zone, zone, zone, zone, perimeter, <br /> LT q.Vk. k• Lc nq Qa== xrwk <br /> (cm) (cm3/cm3) (cm3/cm3) (cm2) (cm) (cm2) (cm) (cm3/cm3) ( m3/cm3) (Grua/cm3) (cm) <br /> 149.7444 0.274 0.245 1.27E-09 0.885 1.10E-09 46.86 0.442 0.067 0.375 4 000 <br /> Area of Capillary Total <br /> enclosed Crack- Crack Enthalpy of Henry's law Henry's law Vapor Vadose zone zone overall <br /> Bldg. space to-total depth vaporization at constant at constant at viswsiry,at effective effective affective <br /> ventilation below area below ave.groundwater ave.groundwater ave.groundwater ave.soil diffusion diffusion diffusion <br /> rate, grade, ratio, grade, temperature, temperature, temperature, temperature, coefficient, coefficient, coefficient, <br /> Dmaa.d As If Z—k DH.,,. HIT. H'Ts mi. De, D°Fa D. <br /> (om2) (unifless) (cm) (caunnol) (atm-m3/mol) ( nth s) (g/cm-s) (cm'/ ) (c ,/s) (orr/s) <br /> 3.39E+04 1.00E+06 5.00E-03 15 8054 3.75E-03 1.57E-01 1.77E-04 6.05E-03 6.74E-05 2.10E-04 <br /> Exponentof Infinite <br /> Average Crack equivalent source Infinite <br /> Diffusion Convection Source vapor effective foundation indoor source Unit <br /> path path vapor Crack flow rate diffusion Area of Pedet attenuation bldg. risk Reference <br /> length, length, conc., radius, into bldg., coefficient, crack, number, coefficient, conc., factor, conc., <br /> Ld Lp Ow— r7—k Cl o Dcmk Aawk exp(Pe1) a Cdadind URF RfC <br /> (cm) /in(m9/in (cm) (cm3/s) (cm2/s) (cm2) (unifies) ( '8 ) (mg/m') (mg/m) (mg/nn) <br /> 149.7444 15 4.86E+p4 1.25 8.33E+01 6.05E-03 5.00E+03 9.41E+11 4.07E-05 1.99E+00 2.9E-OS 3.0E-02 <br /> DTSC/HERD DTSC Indoor Air Guidance <br /> Last Update:11/1/03 Unclassified Soil Screening Model 7/182007 <br /> a:Nv 11N000`lsnsn OJ.7111WTw l..WE-Iu TWw0.1and M2.* <br />