Regulations last checked for updates: Feb 22, 2025

Title 40 - Protection of Environment last revised: Nov 22, 2025
§ 51.1401 - Applicability of part 51.

The provisions in subparts A through Y, AA, and CC of this part apply to reclassified nonattainment areas for purposes of the ozone NAAQS to the extent they are not inconsistent with the provisions of this subpart.

source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 51.1401