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 This website is no longer updated and links to external websites and some internal pages may not work.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


Process for Developing Dioxin Cleanup Decisions at Superfund Sites

Cleanup under Removal authority

EPA guidance on identifying non-National Priority List (NPL) removal actions that may be nationally significant or precedent-setting and procedures for requesting Headquarters concurrence can be found here. A designation as nationally significant or precedent-setting includes removal actions at sites involving any form of dioxin when it is one of the principal contaminants of concern.

Cleanup under Remedial authority

Guidance on EPA Regional consultation with Headquarters on sites where remediation goals are to be developed for dioxin in soil can be found here.