This letter accompanies Clean Water Act (CW A) Section 401 guidance for federal agencies, states, and authorized tribes. The guidance is intended to help streamline the Section 401 certification process to promote timely action on important federal permits and licenses while the agency works to modernize its Section 401 implementing regulations. Consistent with Executive Order No. 13868 (E.O. 13868), this letter withdraws and rescinds the EPA's April 2010 interim handbookYou may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Letter on CWA Section 401 Guidance (PDF)(2 pp, 62 K, 06/07/2019)