Final rule · 2026-23219

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

The U.S. Environmental Protection Agency (EPA or Agency) is approving changes to South Carolina's State Implementation Plan (SIP) which revise the State's source testing requirements and its regulations prescribing minor source permit program requirements, including minor new source review (NSR) requirements, and partially approving and partially conditionally approving regulations prescribing control requirements for certain stationary sources of nitrogen oxides (NO<INF>X</INF>) in SIP revisions submitted by the State of South Carolina, through the South Carolina Department of Environmental Services (SC DES), on October 1, 2007; July 18, 2011; June 17, 2013; August 8, 2014; January 20, 2016; July 27, 2016; September 5, 2017; April 24, 2020; February 4, 2022; and July 23, 2025. This action is being finalized pursuant to the Clean Air Act (CAA or Act).