Data / Federal rules / 2025-03609

Air Plan Approval; SC; Updates to the Cross-State Air Pollution Rule

The Environmental Protection Agency published this final rule in the Federal Register on March 7, 2025. It took effect on April 7, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted through the South Carolina Department of Health and Environmental Control (SC DHEC) on September 26, 2023, regarding updates to the State's Cross-State Air Pollution Rule (CSAPR) emissions trading programs. The SIP revision incorporates by reference (IBRs) certain amendments EPA has made to the regulations for the Federal CSAPR trading programs for annual emissions of nitrogen oxides (NO<INF>X</INF>) and sulfur dioxide (SO<INF>2</INF>) for large electric generating units (EGUs). EPA is approving South Carolina's September 26, 2023, SIP revision because it is consistent with EPA's good neighbor CSAPR trading programs and the Clean Air Act (CAA or Act).

Key facts

Document number: 2025-03609
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: March 7, 2025
Takes effect: April 7, 2025
Dates: This rule is effective April 7, 2025.
Docket: EPA-R04-OAR-2024-0006; FRL-12050-02-R4
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides
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 environmental protection · Rules on incorporation by reference · Published in March 2025

Read from the Federal Register API, last updated 2026-10-24. 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.