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 This website is no longer updated and links to external websites and some internal pages may not work.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

Special Consolidated Checklist for Treatability Studies Sample Exemption

This checklist consolidates the changes to federal code addressed by the following Treatability Studies Sample Exemption checklists through December 31, 2002.

Treatability Studies Sample Exemption (Rich Text Format)(5 pp, 237 K)

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