The Environmental Protection Agency (EPA or the Agency) is finalizing the Agency's first comprehensive revisions to the regulations governing Clean Water Act (CWA) section 404 Tribal and State programs since 1988. The primary purpose of the revisions is to respond to longstanding requests from Tribes and States to clarify the requirements and processes for the assumption and administration of a CWA section 404 permitting program for discharges of dredged and fill material. The revisions facilitate Tribal and State assumption and administration of CWA section 404, consistent with the policy of the CWA as described in section 101(b), by making the procedures and substantive requirements for assumption transparent and straightforward. It clarifies the minimum requirements for Tribal and State programs while ensuring flexibility to accommodate individual Tribal and State needs. In addition, the final rule clarifies the criminal negligence standard in the CWA section 404 program, as well as making a corresponding change in the section 402 program. Finally, the final rule makes technical revisions, including removing outdated references associated with the section 404 Tribal and State program regulations.