An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Risk Assessment

Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments - Interim Final

This document provides guidance to site managers and Remedial Project Managers who are legally responsible for the management of a site on how to design and conduct technically defensible ecological risk assessments for the Superfund program.

This document supersedes EPA's 1989 Risk Assessment Guidance for Superfund, Volume 2, Environmental Evaluation Manual as guidance on how to design and conduct an ecological risk assessment under Superfund.