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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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

Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual Supplemental Guidance

This guidance supplements the Risk Assessment Guidance for Superfund: Human Health Evaluation Manual, Part A that was issued October 13, 1989.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.