National Emission Standards for Hazardous Air Pollutants From Hazardous Waste Combustors: Residual Risk and Technology Review

Document 2026-11047 is a Final Rule published by the Environmental Protection Agency in the Federal Register on June 3, 2026, with an effective date of June 3, 2026. The U.S. Environmental Protection Agency (EPA) is finalizing the residual risk and technology review (RTR) conducted for the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Hazardous Waste Combustors (HWC). Specifically, the EPA is finalizing that risks due to emissions of hazardous air pollutants (HAP) from this source category are adequately addressed by the existing standards; that the NESHAP provides an ample margin of safety to protect public health; and that no developments in practices, processes, or control technologies necessitate revision of the standards. In addition, the EPA is promulgating emission standards for hydrogen fluoride (HF) and hydrogen cyanide (HCN) emissions from major source HWC incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers under Clean Air Act (CAA) sections 112(d)(2) and (3) and 112(h). These final amendments also include work practice standards under CAA section 112(h) for periods of startup, shutdown, and malfunction (SSM); new electronic reporting provisions and requirements; provisions allowing States to choose to exempt area source HWCs from certain permitting requirements; and certain typographical and technical corrections and clarifications. View the original at https://www.federalregister.gov/documents/2026/06/03/2026-11047/national-emission-standards-for-hazardous-air-pollutants-from-hazardous-waste-combustors-residual.

No. Document 2026-11047 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.