HSSM (Hydrocarbon Spill Screening Model) is a U.S. EPA model which simulates subsurface releases of light nonaqueous phase liquids (LNAPLs). The HSSM model includes separate modules for LNAPL flow through the vadose zone, spreading in the capillary fringe, and transport of chemical constituents of the LNAPL in a water-table aquifer. These modules are based on simplified conceptualizations of the flow and transport phenomena which were used so that the resulting model would be a practical, though approximate tool. A Windows interface is provided to create input data sets, run the model, and graph the results. HSSM includes the executable and source code.
This model is public domain and can be downloaded for FREE using the link below.
For more up-to-date Windows-compatible software, please review our other Bioremdiation Software products.