This is the first step in a long-term effort to develop risk assessment guidelines for ecological effects. Its primary purpose is to offer a simple, flexible structure for conducting and evaluating ecological risk assessment within EPA.
This Framework served as the foundation for, and has been superseded by, EPA's 1998 Ecological Risk Assessment Guidelines.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Framework for Ecological Risk Assessment (PDF)(57 pp, 1 MB, February 1992 , 630-R-92-001)