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' MTBE Fate and Transport Input FATE AND TRANSPORT MODEL INPUT SUMMARY FILE ' Model Description Unsaturated zone model linked with saturated zone model • tie Lathrop rap G&F soil w/MTBE ' simulation time {years) 100 vadose zone source parameters ' Thickness of contam-ination (m) 1 3 Depth to top of contamination (m) 1 5 Length of source (m) 0 32 width of source (m) 0 32 ' unsaturated zone Properties Total Porosity in vadose zone (cm3/cm3) 0 25 Residual water content (cm3/cm3) 0 12 Fraction organic carbon (g oc/g soil) 5 OOE-03 soil bulk density g/cm3 1 7 Infiltration Rate cm/yr 2 7 Saturated conductivity (m/d) 0 86 Van Genuchten's N 1 5 Thickness of vadose zone (m) 9 1 Lens Parameters ' Thickness of lens (m) 1 8 Total porosity in lens (cm3/cm3) 0 40 Residual water content--lens (cm3/cm3) 0 21 Saturated conductivity Cm/d) 2 20E-02 ' van Genuchten N in lens 1 1 Aquifer Properties ' • Effective porosity (cm3/cm3) 0 20 Fraction organic carbon (g oc/g soil) 5 OOE-03 Hydraulic conductivity (m/d) 0 86 Soil bulk density ( /cm3) 1 7 Hydraulic ggradient(?/cm3) 5 OOE-03 ' ***Longitudinal dnspersivity (m) code calculated ***Transverse d'ispersivity (m) code calculated ***vertical dispersivity (m) code calculated ' Receptor well Location Distance downgradlent (m) 14 ' Distance cross-gradient (m) 0 0 Depth to top of well screen (m) 0 0 Depth to bottom of well screen(m) 4 6 Number of points used to talc cont 3 ' TPH Data for Unsaturated zone source Concentration of TPH in soil (mg/kg) 7 52E+03 Molecular weight of TPH (g/mol) 1 50E+02 CHEMICAL DATA FOR MTBE ' Diffusion coefficient in air (cm2/s) 7 IOE-02 Diffusion coefficient in water (cm2/s) 9 OOE-06 solubility (mg/1) 4 80E+04 vapor % essure (mmHg) 2SOE+02 9) 1 Henry's Law coefficient {-) 2 04E-02 Molecular weight (g/mol) 88 Degradation rate, saturated zone 1/d) 1 90E-03 • Degradation rate, vadose zone (1/d) 1 90E-03 ' sourceconcentrations - source cont for unsaturated zone model (mg/kg) 1 90E-02 ' Page 1