The U.S. Environmental Protection Agency (EPA) is proposing to amend the General Provisions for National Emission Standards for Hazardous Air Pollutants (NESHAP) to address applicability and compliance issues resulting from the addition of a compound to the list of hazardous air pollutants (HAP) under the Clean Air Act (CAA). This action focuses on issues related to newly applicable standards for sources that become major sources solely from the addition of a compound to the CAA HAP list. This action also includes a discussion of the impacts of a newly listed HAP on the federal operating permit program.


Comments: Comments must be received on or before November 13, 2023.

You may send comments, identified by Docket ID No. EPA–HQ–OAR–2022–0441, by any of the following methods:

Federal eRulemaking Portal:​ (our preferred method). Follow the online instructions for submitting comments.

Email: . Include Docket ID No. EPA–HQ–OAR–2022–0441 in the subject line of the message.