Laserfiche WebLink
' TPH c6-8 <br /> ' FATE AND TRANSPORT MODEL OUTPUT FOR TPH Aliphatic C6-8 <br /> artOf VADOSE ZONE MODEL OUTPUT <br /> - <br /> ' Effective Diffusion Coefficient for vadose zone <br /> ------------------------------------------------ <br /> Total thickness of subunit [cm] 1 60E+02 <br /> Atir-filled porosity [-] 9 22E-02 <br /> ' water-filled porosity [-] 0 16 <br /> Total porosity [-] 0 25 <br /> Effective diff coeff for subunit [cmA2/s] 5 67E-04 <br /> EffectiveDiffusionCoefficientforLens <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 20E-05 <br /> overall Effective Diffusion Coefficient <br /> ------------------------------------------------ <br /> Overall diffusion path length [m 3 8 <br /> ' Overall effective diffusion coef icient [cmA2/s] 2 22E-05 <br /> overall effective diffusion coefficient [mA2/d] 1 92E-04 <br /> Data summary and Initial Calculations <br /> ' unsaturated zone <br /> - <br /> Distancefrom ground surface to source -- 1 5 m <br /> Thickness of source 4 6 m <br /> ' Thickness of vadose zone 4 1 m- <br /> Infiltration rate (vDarcy) 7 40E-05 m/d <br /> Porosity in vadose zone 0 25 <br /> Moisture content in vadose zone 0 16 - <br /> Soil bulk density 1 7 g/cm3 <br /> ' Fraction organic carbon in soil 5 OOE-03 g/ <br /> calculated pore water velocity 4 69E-04 m/d <br /> chemical-specific Parameters <br /> ------------------------------------------------ <br /> solubility 5 4 mg1 <br /> Henrys Law coefficient 51 [- <br /> KOC, organic carbon partition coeff 4 00E+03 ml/g <br /> Calculating Dissolved Phase Source Concentration <br /> This chemical is-considered part of a TPH mixture <br /> Mass fraction of TPH In soli 7 52E-03 11,mk <br /> Molecular weight of TPH 1 50E+02Mass fraction of chemical in soil 1 04E-03 kMolecular weight of Chemical 1 00E+02 [ olCalculated mole fraction of chemical 0 21 l/mo <br /> Calculated effective solubility 1 1 mg/l <br /> Dissolved phase concentration calculated <br /> using equilibrium partitioning (3-phase) 45 mg/l <br /> ' Residual concentration level calculated <br /> using the calculated effective solubility <br /> (which accounts for male fraction) 26 mg/kg <br /> t ***The lesser value of the (effective) solubility and the dissolved phase <br /> ***concentration calculated using equilibrium partitioning (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 /> Init-ial dissolved phase concentration 1 1 mg/l <br /> Residual concentration level calculated <br /> ' using the full solubility 1 23E+02 mg/kg <br /> ***The source concentration is ABOVE the residual concentration <br /> • <br /> source-Decay-Terms <br /> ----------- <br /> ------------------- <br /> source total decay term--Beta 3 65E-07 <br /> source loss term--liquids only [1/day]. 1 02E-08 <br /> source loss term--vapor only 1/day 3 55E-07 <br /> Initial source vapor concentration kg/mA31 5 70E-02 <br /> ' Page 1 <br />