Record Display for the EPA National Library Catalog


Main Title User manual for EXPRESS, the "EXAMS-PRZM exposure simulation shell" /
Author Burns, Lawrence A.
CORP Author Environmental Protection Agency, Athens, GA. Ecosystems Research Div.;Environmental Protection Agency, Washington, DC. Office of Research and Development.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 2006
Report Number EPA/600/R-06/095
Stock Number PB2007-100140
OCLC Number 212906639
Subjects Pesticides--Toxicology--Handbooks, manuals, etc ; Pesticides--Risk assessment--Handbooks, manuals, etc ; Health risk assessment--Handbooks, manuals, etc
Additional Subjects Simulation models ; EXPRESS ; Computer software ; User manual (Computer program) ; Pesticides ; Regulatory models ; Databases ; Chemical properties ; Regulatory analysis ; Graphical User Interface (GUI)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD RPS EPA 600-R-06-095 repository copy AWBERC Library/Cincinnati,OH 04/16/2018
NTIS  PB2007-100140 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Edition Version 1.01.02, September 30, 2006.
Collation 37 pages : digital file, PDF
The Office of Pesticide Programs (OPP) Environmental Fate and Effects Division (EFED) has developed a tiered approach to determine the appropriate level of modeling needed to perform a risk assessment for a pesticide. This tiered approach is designed to minimize the amount of analysis required to evaluate any given chemical. Each of the tiers is designed to screen out pesticides by requiring higher, more complex levels of investigation only for those compounds that have not passed the previous tier. Each tier screens out a percentage of pesticides from having to undergo a more rigorous review prior to registration or reregistration. 'Passing' a given assessment tier indicates that there is a low possibility of risk to the aquatic environment. 'Failing' an assessment tier does not, however, necessarily mean the chemical is likely to cause environmental problems, merely that the assessment should continue on to the next higher assessment tier. The intent of this tiered modeling system is to produce only as thorough an analysis as is necessary for each pesticide, and thereby focus greatest resources and efforts toward areas of greatest potential ecological threat.
Title from title screen (viewed on March 4, 2008). "September 30, 2006." "EPA/600/R-06/095." Includes bibliographical references (page 37).