VLEACH
Category Contaminant transport (1D)
Publisher  Dynamac Corp 
Platform DOS
Status Public domain
Description VLEACH is a relatively simple 1D finite difference model. The code can simulate leaching through the vadose zone of a volatile, sorbed, non-reactive contaminant that displays linear partitioning behavior. In particular, it simulates downward liquid-phase advection, solid-phase sorption, gas diffusion in the vapor phase, and three-phase equilibrium. The contaminant mass within each model cell is partioned among liquid (dissolved in water), vapor, and solid phases. Contaminant may be present in the soil as initial condition, or introduced at the top boundary as a concentration for recharge. Gas diffusion may take place at the top and bottom boundaries. Liquid mass flux across the bottom boundary is calculated. The model assumes a homogeneous porous medium with steady flow and no dispersion. There is no in-situ degradation or production, and free product is not present. It can simultaneously simulate downward leaching in a number of polygons with different soil properties.
Cost US Dollars 90
Data formats supported None stated
Supplier in United States of America  International Ground Water Modeling Center 
Supplier in United States of America  Scientific Software Group 
Supplier in United States of America  US Environmental Protection Agency 

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