Data / Federal rules / 2026-16932

Air Plan Partial Approval and Partial Conditional Approval; South Carolina; Control of Oxides of Nitrogen and Source Testing Requirements

The Environmental Protection Agency published this proposed rule in the Federal Register on August 19, 2026. Comments closed on September 18, 2026.

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What the agency says

The U.S. Environmental Protection Agency (EPA or Agency) is proposing to partially approve and partially conditionally approve changes to South Carolina's State Implementation Plan (SIP) to revise source testing requirements and regulations prescribing control requirements for certain stationary sources of nitrogen oxides (NO<INF>X</INF>) submitted by the State of South Carolina, through the South Carolina Department of Environmental Services (SC DES), on October 1, 2007; July 27, 2016; September 5, 2017; April 24, 2020; and February 4, 2022. This action is being proposed pursuant to the Clean Air Act (CAA or Act).

Key facts

Document number: 2026-16932
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: August 19, 2026
Comments due: September 18, 2026
Dates: Comments must be received on or before September 18, 2026.
Docket: EPA-R04-OAR-2025-0017; FRL-13063-01-R4
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Nitrogen dioxide; Reporting and recordkeeping requirements
Pages: 25

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 August 2026

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.