StacksVerified U.S. regulatory reference

40 CFR §51.1114

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The requirements for nonattainment NSR for the ozone NAAQS are located in § 51.165. For each nonattainment area, the state shall submit a nonattainment NSR plan or plan revision for the 2008 ozone NAAQS no later than 36 months after the effective date of the area's designation for the 2008 ozone NAAQS.