Exposure Assessment Models


EXPRESS (EXAMS - PRZM Exposure Simulation Shell) is designed to facilitate a rapid and consistent assessment of aquatic pesticide exposure on a variety of crops. EXPRESS is a joint project of the USEPA Office of Pesticide Programs' Environmental Fate and Effects Division (OPP/EFED) and the USEPA Office of Research and Development (ORD).

Current Version: 1.03.02
Release Date: July 2007
Development Status: General Release
Development Information: Release Notes - changes and known deficiencies
Operating System: Windows 95, 98, NT, 2000, XP
Development Language: Fortran/Winteracter
Intended Audience: Scientist/Engineer/Biologist
Key Words: przm, exams, exposure, shell
Related Web Sites: EXAMS Model Page
PRZM3 Model Page
Meteorological Data Page (Note that met files are now included with the application installer Install_EXPRESS.EXE)
Text Files (ASCII Format)
File Name File Description
ABSTRACT.TXT Summary of functions, theory, and applicability.
README.TXT Important installation and usage information.
Download Files
File Type /
File Name /
Format /
File Description
Install /
InstallShield Executable /
114 MB
Setup file for version 1.03.02 of the EXPRESS system. The user manual is included in this file. See README.TXT for important installation instructions.
Document /
Express.pdf /
Adobe Acrobat /
2.6 MB
User Manual for EXPRESS, the "EXAMS-PRZM Exposure Simulation Shell" (PDF, 41 pp., 2.6 MB, about PDF).
Document /
SourceCodeZip.exe /
Windows Executable /
596 KB
Self-extracting zip file containing source code documents. View description of bundled files.).
Document /
QADocsZip.exe /
Windows Executable /
34.5 MB
Self-extracting zip file containing quality assurance documents and files. View description of bundled files.).