40 CFR 51.1001 - Applicability of part 51.

Regulations last checked for updates: Feb 13, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026

View all text of Subpart Z [§ 51.1000 - § 51.1016]

§ 51.1001 - Applicability of part 51.

The provisions in subparts A through X of this part apply to areas for purposes of the PM2.5 NAAQS to the extent they are not inconsistent with the provisions of this subpart.

authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.

source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.

cite as: 40 CFR 51.1001