Data / Federal rules / 2025-21787

National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufacturing Facilities Technology Review

The Environmental Protection Agency published this final rule in the Federal Register on December 3, 2025. It took effect on December 3, 2025.

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What the agency says

The U.S. Environmental Protection Agency (EPA or Agency) is taking final action to respond to comments on an interim final rule (IFR) related to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Integrated Iron and Steel Manufacturing Facilities ("II&S NESHAP"). Specifically, the EPA is responding to comments on the IFR published in the Federal Register on July 3, 2025, that revised compliance deadlines for certain provisions related to planned bleeder valve openings, unplanned bleeder valve openings, blast furnace (BF) casthouses, basic oxygen process furnace (BOPF) shops, slag processing and handling, beaching, and fenceline monitoring. After carefully considering the comments, the EPA concludes that the amendments made in the IFR are warranted and is not making any further changes to the compliance deadlines revised in the IFR.

Key facts

Document number: 2025-21787
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 3, 2025
Takes effect: December 3, 2025
Dates: This final rule is effective on December 3, 2025.
Docket: EPA-HQ-OAR-2002-0083; FRL-5919.4-04-OAR
Code of Federal Regulations: 40 CFR 63
Pages: 7

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Published in December 2025

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.