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Pesticide Analytical (PESTAN) Model

PESTAN is used to estimate the vertical migration of dissolved organic solutes through the vadose zone to groundwater. Estimates are based on a closed-form analytical solution of the advective-dispersive-reactive transport equation. The model is intended for use in conducting initial screening assessments of the potential for contamination of ground-water from currently registered pesticides and those submitted for registration.

Version 4.0
Operating System Windows XP

Minimum System Requirements

To run PESTAN, you will need the following:

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


PESTAN Setup (EXE)(6 MB)

PESTAN, Pesticide Analytical Model, Version 4.0 User's Guide

Installation Instructions

  1. Download the PESTANsetup.exe file onto your hard drive.
  2. Run the PESTANsetup.exe file. You will be guided through the installation process.
  3. The User's Manual (pestan.pdf) comes with the installation and is accessible from within the program.

If your operating system is older than Windows XP, you will need to download and install the following file:

This will install the Microsoft .Net Framework, which is needed to run PESTAN.