This action finalizes the Federal plan for existing commercial and industrial solid waste incineration units (CISWI). This final action implements the U.S. Environmental Protection Agency's (EPA) emission guidelines adopted on 7 February 2013, as amended on 23 June 2016, and on 16 April 2019, in states that do not have an approved state plan implementing the emission guidelines in place by the effective date of this Federal plan. The implementation of the emission guidelines will result in emissions reductions of the regulated pollutants including cadmium, hydrogen chloride, lead, mercury, carbon monoxide, nitrogen oxides, particulate matter, and sulfur dioxide from the affected CISWI. This final action is also revising the definition of "small, remote incinerator" to reflect new statutory prohibitions on the implementation of CISWI standards to units in the State of Alaska. This final rule is effective 10 January 2025. POC is Dr. Felica Davis, Sector Policies and Programs Division (E14305), Office of Air Quality Planning and Standards, EPA, 109 T.W. Alexander Drive, P.O. Box 12055, Research Triangle Park, North Carolina 27711; tele: (919) 541-4857; and email: davis.felica@epa.gov. (Federal Register 11 December 2024 [Rule] Pages 100092-100136)