# Air Plan Approval; Colorado; Reg 3 NSR and APEN Updates
> **Rule** · Final rule. · Published 2022-11-22 · Effective 2022-12-22 · 87 FR 71258
## Document
- **Document number:** 2022-24858
- **Category:** air-emissions
- **Federal Register citation:** 87 FR 71258
- **CFR reference:** 40 CFR 52
- **Publication date:** 2022-11-22
- **Effective date:** 2022-12-22
- **State:** CO
- **EPA docket:** EPA-R08-OAR-2022-0103
## Abstract

The Environmental Protection Agency (EPA) is finalizing approval of regulatory amendments submitted by the State of Colorado on May 13, 2020. The revisions make limited amendments to the State's New Source Review (NSR) and Air Pollution Emission Notices (APEN). The EPA is taking this action pursuant to the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/11/22/2022-24858/air-plan-approval-colorado-reg-3-nsr-and-apen-updates)
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