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VLEACH - one-dimensional finite-difference vadose zone leaching model
VLEACH Categories: flow models - unsaturated zone, solute transport models - unsaturated zone
VLEACH Overview
VLEACH, a One-Dimensional Finite-Difference Vadose Zone Leaching Model, is a U.S. EPA program which describes the movement of an organic contaminant within and between three phases: (1) as a solute dissolved in water, (2) as a gas in
the vapor phase, and (3) as an adsorbed compound in the solid phase. The leaching is simulated in a number of distinct, user-defined polygons vertically divided into a series of user-defined cells. At the end of the
simulation, the results from each polygon are used to determine an area-weighted ground-water impact for the modeled area. VLEACH is a computer program for estimating the impact due to the mobilization and migration
of a sorbed organic contaminant located in the vadose zone on the underlying groundwater resource.
A graphical user interface for VLEACH is now available in the WHI UnSat Suite. The VLEACH model is also included.
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