EPA is promulgating a regulation under the Vessel Incidental Discharge Act that establishes Federal standards of performance for marine pollution control devices for discharges incidental to the normal operation of primarily non-Armed Forces and non-recreational vessels 79 feet in length and above into the waters of the United States or the waters of the contiguous zone. The final standards, once made final, effective, and enforceable through corresponding USCG regulations addressing implementation, compliance, and enforcement, will control the discharge of pollutants from vessels described above and repeal certain existing Federal, State, and local vessel discharge requirements, thus streamlining regulation of such vessel incidental discharges. EPA is also promulgating procedures states must follow if they choose to petition EPA to require the use of an emergency best management practice to address aquatic nuisance species (ANS) or water quality concerns ("emergency order"), to review any standard of performance, regulation, or policy. The effective date of this rule is 8 November 2024. POC is Jack Faulk, Oceans, Wetlands, and Communities Division, Office of Water (4504T), U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue NW, Washington, DC 20460; tele: (202) 564-0768; email: faulk.jack@epa.gov. (Federal Register 9 October 2024 [Rule] Pages 82074-82158)