StacksVerified U.S. federal law reference

40 CFR §51.1001 — Applicability of part 51.

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.