Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

Amendments to General Provisions - Exemption from Emission Standards During Periods of Startup, Shutdown, and Malfunction (SSM)

On March 11, 2021, the U.S. Environmental Protection Agency (EPA) published a ministerial final rule to amend General Provisions (40 CFR part 63, subpart A) of the Clean Air Act (CAA) section 112 National Emission Standards for Hazardous Air Pollutants (NESHAP). This action will specifically amend General Provisions language that exempted facilities, unless otherwise regulated, from compliance with emission standards during periods of startup, shutdown, and malfunction (SSM).

A summary fact sheet are available below.

Fact Sheet - Amendments to General Provisions for Exemption from Emission Standards During Periods of Startup, Shutdown, and Malfunction (SSM) (pdf) (105.99 KB, 03/05/2021)

Amendments to General Provisions - Exemption from Emission Standards During Periods of Startup, Shutdown, and Malfunction (SSM)

Stationary Sources of Air Pollution