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Air Quality

Regulation and SIP Management

South Carolina Authority to Implement EPA Regulations

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The U.S. Environmental Protection Agency (EPA) has given authority to DHEC to implement parts of the federal Clean Air Act in South Carolina. That means that DHEC issues and enforces permits under the authority of the Clean Air Act in addition to the South Carolina Pollution Control Act.

  • New Source Review (NSR) Permitting program:  South Carolina is a SIP-approved state, meaning that the EPA has approved South Carolina's State Implementation Plan (SIP) which includes the NSR program, and DHEC implements the NSR provisions of the Clean Air Act in South Carolina. In the SIP, DHEC has developed EPA NSR based regulations for South Carolina (R. 61-62.5, Standards 7 and 7.1). For more information on how other states implement the NSR program, visit EPA's New Source Review webpage.
  • Title V Permitting:  The EPA has approved South Carolina's Title V permitting program (R. 61-62.70), so DHEC issues state Title V operating permits that meet federal Title V permitting requirements.
  • National Emissions Standards for Hazardous Air Pollutants (NESHAP):  South Carolina has what is called 'straight delegation,' meaning that DHEC implements these federal NESHAP regulations when the EPA promulgates them. DHEC also annually adopts federal NESHAP regulations from the previous year into South Carolina regulations, at R. 61-62.63.
  • New Source Performance Standards (NSPS):  South Carolina has 'adopt-by-reference delegation,' meaning that DHEC implements and enforces federal NSPS regulations by adopting them by reference into state regulations (R. 61-62.60). With adopt-by-reference delegation, South Carolina does not need to seek additional EPA approval for delegated authority for each NSPS.

The EPA formally delegates and defines this authority through notices in the Federal Register.


For more information please contact the Bureau of Air Quality at (803) 898-4123 or by email.