U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(a) The state implementation plan (SIP) revision submitted on June 21, 2022, addressing Clean Air Act section 110(a)(2)(D)(i)(I) (prongs 1 and 2) for the 2015 ozone national ambient air quality standards (NAAQS) is disapproved.
(b) [Reserved]
