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' TPH c12-16 <br /> ' FATE AND TRANSPORT MODEL OUTPUT FOR TPH Aliphatic C12-16 <br /> art of VADOSE ZONE MODEL OUTPUT <br /> --------------------------------------------- <br /> Effective <br /> ------------------------------------------- <br /> Effective Diffusion Coefficient for vadose zone <br /> ------------------------------------------------ <br /> Total thickness of subunit [cm] 1 60E+02 <br /> Air-filled porosity [-1 9 22E-02 <br /> ' water-filled porosity -] 0 16 <br /> Total <br /> porosity [-] 0 25 <br /> Effective diff coeff for subunit [cmA2/s] 5 67E-04 <br /> Effective Diffusion Coefficient for Lens <br /> `----------------------------------------------- <br /> Total thickness of subunit [cm] 1 80E+02 <br /> Air-filled porosity [- 3 84E-02 <br /> water-filled porosity -] 0 36 <br /> Total porosity [-] 0 40 <br /> Effective diff coeff for subunit [cmA2/s] 1 19E-05 <br /> Overall Effective Diffusion Coefficient <br /> ------------------------------------------------ <br /> Overall diffusion path length [m] 3 8 <br />' Overall effective diffusion coefficient [cmA2/s] 2 21E-05 <br /> Overall effective diffusion coefficient [mA2/d] 1 91E-04 <br /> Data summary and Initial Calculations <br /> Unsaturated zone <br /> ------------------------------------------------ <br /> Distance from ground surface to source 1 5 m <br /> Thickness of source 4 6 m <br />' Thickness of vadose zone 9 1 m- <br /> Infiltration rate (vDarcy) 7 40E-05 m/d <br /> Porosity in vadose zone ❑ 25 [-] <br /> Moisture content in vadose zone ❑ 16 [ ] <br /> Soil bulk density 1 7 g/cm3 <br /> Fraction organic carbon in soil 5 OCE-03 g/gg <br /> Calculated pore water velocity 4 69E-04 m/d <br /> Chemical-Specific Parameters <br /> ------------------------------------------------ <br /> solubility 7 60E-04 mg/1 <br /> Henrys Law Coefficient 5 40E+02 [- <br /> Kon, organic carbon partition coeff 5 ❑OE+06 ml/g <br /> calculating Dissolved Phase Source Concentration <br /> ------------------------------------------------ <br /> This chemical is considered part of a TPH mixture <br /> Mass fraction of TPH in soil 7 52E-03 k /k <br /> Molecular weight of TPH 1 50E+02 gg�mol <br /> Mass fraction of chemical in soil 2 17E-03 k /k <br /> Molecular weight of chemical 2 00E+02 Ig[mol <br /> Calculated mole fraction of chemical 0 22 mol/mo <br /> Calculated effective solubility 1 65E-04 mg/l <br /> Dissolved phase concentration calculated <br /> using equilibrium partitioning (3-phase) 8 6BE-02 mg/l <br />' Residual concentration level calculated <br /> using the calculated effective solubility <br /> (which accounts for mole fraction) 4 1 mg/kg <br />' ***The lesser value of the (effective) solubility and the dissolved phase <br /> ***concentration calculated using equilibrium partition-in g (see above) will <br /> ***be used as the maximum concentration in the unsaturated zone <br /> ***model source <br /> Results from above calculation <br /> (limiting concentration) <br /> ------------------------------------------------ <br /> initial dissolved phase concentration 1 65E-04 mg/l <br />' Residual concentration level calculated <br /> using the full solubility 19 mg/kg <br /> ***The source concentration is ABOVE the residual concentration <br /> source DecayTerms <br /> - - ------------------------------ <br /> source total decay term--Beta 2 64E-10 <br />' source loss term--liquids onll [1/day] 7 17E-13 <br /> source loss term--vapor only `1/day] 2 63E-10 <br /> initial source vapor concentration kg/mA3] 8 69E-05 <br /> t Page 1 <br />