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.

Hydrocarbon Spill Screening Model (HSSM) en Español

Windows Version

Specifications

Version	1.20a
Release Date	September 1997
Development Status	General Release
Operating System	Windows

Downloads

HSSM Windows installation program (EXE) (exe) (1.13 MB)

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) (43.53 KB)

DOS Version

Specifications

Version	1.1
Release Date	April 1994
Development Status	General Release
Operating System	DOS

Downloads

HSSM of DOS installation files (zip) (811.91 KB)

HSSM Volume II – Parameter Variation Data Sets (zip) (43.53 KB)

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).