---
kind: "section"
citation: "40 C.F.R. § 51.1313"
title: "40"
number: "51.1313"
heading: "Section 182(f) NO X exemption provisions."
url: "https://uscodex.org/cfr/40/51.1313"
---

# §51.1313. Section 182(f) NO X exemption provisions.

- (a) A person or a state may petition the Administrator for an exemption from NOX obligations under CAA [section 182(f)](/cfr/40/182.md?p=f) for any area designated nonattainment for a specific ozone NAAQS and for any area in a CAA [section 184](/cfr/40/184.md) ozone transport region.
- (b) The petition must contain adequate documentation that the criteria in CAA [section 182(f)](/cfr/40/182.md?p=f) are met.
- (c) A CAA [section 182(f)](/cfr/40/182.md?p=f) NOX exemption granted for a prior ozone NAAQS does not relieve the area from any NOX obligations under CAA [section 182(f)](/cfr/40/182.md?p=f) for a current ozone NAAQS.

## Notes

### Amendments

[83 FR 63033, Dec. 6, 2018]

### Source

Source: 83 FR 10382, Mar. 9, 2018, unless otherwise noted.

### Authority

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

### Source

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

### Amendments

[83 FR 63033, Dec. 6, 2018]