SSP&A  is known for the significant role it has played in the development of groundwater modeling software. The groundwater contaminant transport model, MT3D, was developed by staff of SSP&A and is presently marketed and used worldwide.
 
News  Our software is now available free of charge with the exception of MT3D which continues to be a licensed product.

MT3D⁹⁹ builds on the strengths of the public-domain MT3DMS code, and includes significant new enhancements to improve performance and increase the functionality.   MORE >

PATH3D  is a powerful and widely used particle-tracking program for MODFLOW.ATH3D is a valuable extension to a groundwater flow model, and is frequently a practical alternative to a contaminant transport model.   MORE >

ATRANS  A 3D analytical solution for transport from a patch boundary condition with time varying concentration, developed by Chris Neville.   MORE >

MPNE1D  A General Analytical Solution for One-Dimensional Solute Transport. MPNE1D is a FORTRAN90 code that implements the general analytical solution for one-dimensional solute transport.   MORE >

BIOSCREEN-AT  is a screening-level model developed for and distributed by the EPA that simulates remediation through natural attenuation of dissolved hydrocarbons at petroleum fuel release sites.   MORE >

PEST  the world’s most advanced software for model calibration, parameter estimation and predictive uncertainty analysis. The days of manual model calibration and data interpretation are over.   MORE >

KT3D_H2O  KT3D_H2O Version 3.0 is a graphical user interface (GUI) that combines various programs to generate gridded maps.   MORE >