# Approval and Promulgation of Implementation Plans; Phoenix, Arizona Ozone Nonattainment Area, 15 Percent Rate of Progress Plan and 1990 Base Year Emission Inventory
> **Rule** · Final rule. · Published 1998-05-27 · 63 FR 28898
## Document
- **Document number:** 98-13984
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 28898
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-05-27
- **State:** AZ
- **EPA docket:** AZ-005-ROP FRL-6101-9
## Abstract

EPA is determining, pursuant to its federal planning authority in Clean Air Act (CAA) section 110(c), that the Phoenix, Arizona ozone nonattainment area has in place sufficient control measures to meet the 15 percent rate of progress (ROP) requirement in Clean Air Act (CAA) section 182(b)(2). EPA is also approving, under CAA sections 110(k) and 182(a)(1), the 1990 base year emissions inventory for the Phoenix metropolitan area that was submitted to EPA by the State of Arizona on April 1, 1993.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/05/27/98-13984/approval-and-promulgation-of-implementation-plans-phoenix-arizona-ozone-nonattainment-area-15)
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