---
kind: "section"
citation: "40 C.F.R. § 60.28a"
title: "40"
number: "60.28a"
heading: "Plan revisions by the State."
url: "https://uscodex.org/cfr/40/60.28a"
---

# §60.28a. Plan revisions by the State.

- (a) Any significant revision to a State plan shall be adopted by such State after reasonable notice, public hearing, and meaningful engagement. For plan revisions required in response to a revised emission guideline, such plan revisions shall be submitted to the Administrator within fifteen months, or as determined by the Administrator, after publication in the Federal Register of a final revised emission guideline under [§ 60.22a](/cfr/40/60.22a.md). All plan revisions must be submitted in accordance with the procedures and requirements applicable to development and submission of the original plan.
- (b) A revision of a plan, or any portion thereof, shall not be considered part of an applicable plan until approved by the Administrator in accordance with this subpart.

## Notes

### Amendments

[84 FR 32575, July 8, 2019, as amended at 88 FR 80545, Nov. 17, 2023]

### Source

Source: 84 FR 32575, July 8, 2019, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.

### Amendments

[84 FR 32575, July 8, 2019, as amended at 88 FR 80545, Nov. 17, 2023]