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

What it does

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).

The Environmental Protection Agency's summary, as published in the Federal Register.

What it would change

1 part of Title 40 of the Code of Federal Regulations:

40 CFR 52

What happens next and when

Comments must be received on or before September 18, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket EPA-R04-OAR-2025-0017 on Regulations.gov
• Title 40 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register