Data / Federal rules / 2025-19225

Air Plan Approval; North Carolina; Revisions to Regulations for Sulfur Dioxide Emissions From Combustion Sources

The Environmental Protection Agency published this final rule in the Federal Register on October 2, 2025. It took effect on November 3, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the North Carolina Division of Environmental Quality (NCDEQ), Division of Air Quality on November 28, 2023, for the purpose of revising regulations that establish sulfur dioxide (SO<INF>2</INF>) emission limits and compliance parameters for SO<INF>2</INF>-emitting combustion sources in the State. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act) and EPA regulations.

Key facts

Document number: 2025-19225
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: October 2, 2025
Takes effect: November 3, 2025
Dates: This rule is effective November 3, 2025.
Docket: EPA-R04-OAR-2024-0163; FRL-12823-02-R4
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in October 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.