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=ATE AND TRANSPORT MODEL OUTPUT FOR: Xylenes <br /> rt of model output for: <br /> hnson and Ettinger Indoor air model <br /> with volatile emissions from soil <br /> ------------------------------- <br /> ' Calculating Vapor Phase Concentration at Source: <br /> (Using Equilibrium Partitioning Equation) <br /> Inputs: <br /> ---------- ------- ------------- <br /> Total concentration in soil [mg/kg]......... 13, <br /> Total porosity [-].......................... 0.25 <br /> ' Air content [-]............................. 0.10 <br /> Moisture content [-]........................ 0.15 <br /> Fraction organic carbon [-]................. 1.00E-02 <br /> Organic carbon partitioning coeff. [ml/g]... 2.40E+02 <br /> Soil bulk density [g/cm3]................... 1.7 <br /> Henrys Law coeff. [-]....................... 0.29 <br /> ' Chemical solubility [mg/1].................. 1.98E+02 <br /> Outputs: <br /> 0alculated dissolved phase conc, [mg/1]..... 5.2 <br /> ffective solubility (mg/1]................. 1.98E+02 <br /> Source concentration is BELOW residual limit <br /> because calculated dissolved phase conc. <br /> is LESS than the effective solubility. <br /> ' Dissolved phase conc, at source [mg/1]...... 5.2 <br /> Source vapor concentration [g/cm^3]......... 1.50E-06 <br /> Source vapor concentration [mg/m"3]......... 1.50E+03 <br /> ' Residual level [mg/kg]...................... 4.96E+02 <br /> (assuming pure chemical solubility) <br /> VAPOR TRANSPORT FROM SOIL TO INDOOR AIR USING THE JOHNSON-ETTINGER MODEL <br /> ' Effective Diffusion Coefficient for Lens <br /> Total thickness of subunit [cm]............... 6.00E+02 <br /> ' Air-filled porosity [-].............I......... 0.10 <br /> Water-filled porosity [-]..................... 0.15 <br /> Total porosity [-]............................ 0.25 <br /> ' Effective diff. coeff. for subunit....[CMA 2/s] 5.36E-04 <br /> ffective Diffusion Coefficient for Foundation <br /> Total thickness of subunit [cm]............... 15. <br /> Air-filled porosity [-]....................... 0.25 <br /> ' Water-filled porosity [-1............I........ 0.0 <br /> Total porosity [-]............................ 0.25 <br /> Effective diff. coeff. for subunit....rcm^21st 1.13E-02 <br />