Table 1. Parameters Used in TCE and PCE Fate and Transport Simulations.
Contaminant |
PCE |
TCE |
Source Location |
MW-5 |
MW-5 |
Source Concentration (µg/L) a |
17,000 |
600 |
Effective Porosity, ne b |
0.3 |
0.3 |
Average Hydraulic Gradient, dh/dx b |
0.005 |
0.005 |
Average Hydraulic Conductivity, k (ft/d) b |
40 |
40 |
Pore Groundwater Velocity in x- direction, Vx = k × (dh/dx) / ne (ft/d) c |
0.67 |
0.67 |
Pore Groundwater Velocity in y- direction, Vy (ft/d) c |
0 |
0 |
Fraction of Organic Carbon, foc b |
0.0003 |
0.0003 |
Organic Carbon Partitioning Coefficient, Koc, (mL/g) b |
364 |
152 |
Distribution Coefficient, Kd=foc × Koc (mL/g) |
0.109 |
0.046 |
Bulk Density, Db (g/mL) b |
2.69 |
2.69 |
Retardation Coefficient, R = 1 + Kd × Db / ne |
1.979 |
1.409 |
Dispersivity, (ft) d |
100 |
100 |
Longitudinal Dispersion Coefficient, |
67 |
67 |
Lateral Dispersion Coefficient - Dy . Dx / 10 (ft2/d) |
6.7 |
6.7 |
Contaminant Half-Life (day) |
conservative |
conservative |
a The highest concentration ever detected from MW-5.
b Parameters obtained from Table 6.3-1, SECOR (1998).
c Flow direction is northwest and designated as the direction of x coordinate.
d The dispersivity is assumed based on the literature value.