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ATE AND TRANSPORT MODEL OUTPUT FOR: Ethylbenzene VP .! trt of model output for: rison and Ettinger Indoor air model with volatile emissions from soil -------------___-_— -----____ ' Calculating Vapor Phase Concentration at Source: (Using Equilibrium Partitioning Equation) Inputs: ' Total concentration in soil [mg/kg]. ..... 10. Total porosity [-].......................... 0.25 ' Air content [-]............................. 0.10 .... Moisture content[-].................... 0.15 Fraction organic carbon [-]................. 1.00E-02 Organic carbon partitioning coeff. [ml/g]... 3.60E+02 Soil bulk density[g/cm3]................... 1.7 Henrys Law coeff. [-]....................... 0.32 ' Chemical solubility [mg/1].................. 1.69E+02 Outputs: kalculated dissolved phase cont. [mg/I]..... 2.7 ective solubility [mgA]................. 1.69E+02 Source concentration is BELOW residual limit ' because calculated dissolved phase cont. is LESS than the effective solubility. ' Dissolved phase cont, at source [mg11]...... 2.7 Source vapor concentration [g/cm"3]......... 8.71 E-07 Source vapor concentration [mg/m"3]......... 8.71E+02 Residual level [mg/kg]...................... 6.27E+02 ' (assuming pure chemical solubility) ' VAPOR TRANSPORT FROM SOIL TO INDOOR AIR USING THE JOHNSON-ETTINGER MODEL ' Effective Diffusion Coefficient for Lens -------------------------- Total thickness of subunit [cm]............... 6.00E+02 ' Air-tilled porosity [-]....................... 0.10 Water-filled porosity [-]..................... 0.15 Total porosity[-]............................ 0.25 ' Effective diff. coeff. for subunit....[cm"2]s] 5,58E-04 Diffusion Coefficient for Foundation ------------------------ POEffgc'i,,e tal thickness of subunit [cm]............... 15. Air-filled porosity [-]....................... 0.25 ' Water-filled porosity [-] .... 0.0 Total porosity [-]....... .............. 0.25 Effective diff. coeff. for subunit......fcm". 21st 1.18E-02