Hydrocarbon Spill Screening Model (HSSM)
The Hydrocarbon Spill Screening Model (HSSM) simulates flow of the light nonaqueous-phase liquid (LNAPL) and transport of a chemical constituent of the LNAPL from the surface to the water table; radial spreading of the LNAPL at the water table, and dissolution and aquifer transport of the chemical constituent.
The HSSM model is one-dimensional in the vadose zone, radial in the capillary fringe, two-dimensional vertically averaged analytical solution of the advection-dispersion equation in the saturated zone.
The model is based on the KOPT, OILENS and TSGPLUME models.
Please note that while this tool remains available for download and use, it is no longer being updated or supported.
Hydrocarbon Spill Screening Model (HSSM) en Español
Windows version
| Version | 1.20a |
|---|---|
| Release Date | September 1997 |
| Development Status | General Release |
| Operating System | Windows |
Downloads
HSSM Windows installation program (EXE) (exe)
US EPA. (1995) "The Hydrocarbon Spill Screening Model (HSSM), Volume 1: User’s Guide." Publication No. EPA/600/R-94/039a.
US EPA. (1995) "The Hydrocarbon Spill Screening Model (HSSM), Volume 2: Theoretical Background and Source Codes." Publication No. EPA/600/R-94/039b.
HSSM Volume II – Parameter Variation Data Sets (zip)
DOS version
| Version | 1.1 |
|---|---|
| Release Date | April 1994 |
| Development Status | General Release |
| Operating System | DOS |
Downloads
HSSM of DOS installation files (zip)
HSSM Volume II – Parameter Variation Data Sets (zip)
US EPA. (1995) "The Hydrocarbon Spill Screening Model (HSSM), Volume 1: User's Guide." Publication No. EPA/600/R-94/039a.
US EPA (1995) "The Hydrocarbon Spill Screening Model (HSSM), Volume 2: Theoretical Background and Source Code." Publication No. EPA/600/R-94/039b.
HSSM Readme File for the Hydrocarbon Spill Screening Model (HSSM), Version 1.10, March 1, 1995, Revised April 2, 1996 (pdf).