An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Remediation Evaluation Model for Chlorinated Solvents (REMChlor)

REMChlor, or Remediation Evaluation Model for Chlorinated Solvents, is an analytical solution for simulating the transient effects of groundwater source and plume remediation. In the analytical method, the contaminant source model is based on a power-function relationship between source mass and source discharge, and it can consider partial source remediation at any time after the initial release. The source model serves as a time-dependent, mass-flux boundary condition to the analytical plume model, where flow is assumed to be one dimensional. The plume model simulates first-order sequential decay and production of several species, and the decay rates and parent/daughter yield coefficients are variable functions of time and distance. This approach allows for flexible simulation of enhanced plume degradation that may be temporary, limited in space, and have different effects on different contaminant species in the decay chain. Health risks posed by carcinogenic species in the plume are calculated that the contaminated water is used in a house for drinking, bathing, and other household activities.

Version 1.0
Release Date December 2007
Operating System .Net

Minimum System Requirements

To run REMChlor, you will need the following:

  • IBM PC/AT or compatible
  • Windows 98 or higher
  • Microsoft .Net Framework


If your operating system is older than Windows XP, you will need to download this file: .NET Framework (EXE)(21 MB) . This file comes with the Microsoft .Net Framework, which is needed to run REMChlor. If your system already has .Net Framework loaded, you will not need this file.

REMChlor Setup (EXE)(25 MB)

Installation Instructions

  1. Download the REMChlorsetup.exe file onto your hard drive.
  2. Run the REMChlorsetup.exe file. You will be guided through the installation process.
  3. The user's manual comes with the installation and is accessible from within the program.