# Clean Air Plans; Base Year Emissions Inventories for the 2015 Ozone Standards; Arizona; Phoenix-Mesa and Yuma Nonattainment Areas
> **Rule** · Final rule. · Published 2022-04-05 · Effective 2022-05-05 · 87 FR 19629
## Document
- **Document number:** 2022-07056
- **Category:** air-emissions
- **Federal Register citation:** 87 FR 19629
- **CFR reference:** 40 CFR 52
- **Publication date:** 2022-04-05
- **Effective date:** 2022-05-05
- **State:** AZ
- **EPA docket:** EPA-R09-OAR-2021-0638
## Abstract

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), revisions to the Arizona state implementation plan (SIP) concerning the base year emissions inventory requirements for the Phoenix-Mesa ozone nonattainment area ("Phoenix-Mesa") and Yuma ozone nonattainment area ("Yuma") for the 2015 ozone national ambient air quality standards (NAAQS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/04/05/2022-07056/clean-air-plans-base-year-emissions-inventories-for-the-2015-ozone-standards-arizona-phoenix-mesa)
---
*AI Analytics · CC0 1.0*