EPA is finalizing new source performance standards (NSPS) and emission guidelines (EG) for large municipal waste combustors (MWC). This rule responds to a voluntary remand of the previous rule and fulfills the Clean Air Act (CAA) section 129(a)(5) five-year review and a consent decree requirement. The rule revises emission limits for several pollutants, removes certain startup, shutdown, and malfunction exemptions, and updates recordkeeping, reporting, and electronic notification requirements. It also streamlines regulatory language, clarifies applicability dates, eliminates Title V requirements for certain air curtain incinerators, and makes technical corrections. EPA estimates the rule will reduce regulated pollutant emissions from existing sources by approximately 3,269 tons per year. This final rule is effective on 11 May 2026. POC is Noel Cope, tele: (919) 541-2128 and email: Cope.Noel@epa.gov. (Federal Register 10 March 2026 [Rule] Pages 11802-11887)