Jump to main content
United States Environmental Protection Agency
Laws & Regulations
Health & Environmental Research Online (HERO)
Export to File
This record has one attached file:
Add More Files
Display Name for File*:
Guidelines for ecological risk assessment
U.S. Environmental Protection Agency :: U.S. EPA
Is Peer Reviewed?
U.S. Environmental Protection Agency, Risk Assessment Forum
Number of Pages
These Agency-wide guidelines are provided to improve the quality and consistency of EPA's ecological risk assessments. As a next step in a continuing process of ecological risk guidance development, the guidelines draw from a wide range of source documents including peer-reviewed issue papers and case studies previously developed by EPA's Risk Assessment Forum. The Guidelines expand on and replace the 1992 report Framework for Ecological Risk Assessment. EPA plans to follow the Guidelines with more detailed guidance in specific areas.
A major theme of the guidelines is the interaction among risk assessors, risk managers, and interested parties at the beginning (planning and problem formulation) and end (risk characterization) of the risk assessment process. In problem formulation, the guidelines emphasize the complementary roles of each in determining the scope and boundaries of the assessment, selecting ecological entities that will be the focus of the assessment, and ensuring that the product of the assessment will support environmental decision making. The risk characterization section discusses estimating, interpreting, and reporting risks and applies an ecological perspective to recent Agency policy encouraging clear, transparent, reasonable, and consistent risk characterizations. The Guidelines emphasize that the interface between risk assessors, risk managers, and interested parties is critical for ensuring that the results of the assessment can be used to support a management decision.
These Guidelines are not regulations and do not impose any new requirement on the regulated community. Rather, the Guidelines are internal guidance for EPA and inform the public and the regulated community regarding the Agency's approach to ecological risk assessment.
ISA-Lead (2013 Final Project Page)
ISA NOxSOxPM Ecology (2018)
Cited in First Draft
Appendix D: Other ecological effects of PM deposition
Cited in the Second Draft
ISA NOxSOxPM Ecology (2020- Final Project Page)
ISA-Ozone (2013 Final Project Page)
ISA-Ozone (2020 Final Project Page)
Full-Text Screening Included
References from Other Sources
Included in ISA First Draft
Included in ISA Final Draft
Peer Input Draft
Learn about HERO
Projects in HERO
Transparency & Integrity