# Approval and Promulgation of State Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of Arizona; Maricopa County Area; Technical Correction
> **Rule** · Final rule; technical correction. · Published 2005-03-10 · Effective 2005-04-11 · 70 FR 11882
## Document
- **Document number:** 05-4710
- **Category:** air-emissions
- **Federal Register citation:** 70 FR 11882
- **CFR reference:** 40 CFR 52
- **Publication date:** 2005-03-10
- **Effective date:** 2005-04-11
- **State:** AZ
- **EPA docket:** AZ 135-0085
## Abstract

In this action, EPA is amending the regulations that identify area designations within Arizona. The purpose of this action is to correct this section to clarify the boundary description of the Phoenix Planning Area designated as nonattainment for the National Ambient Air Quality Standards (NAAQS) for particulate matter 10 microns or smaller in diameter (PM-10).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/03/10/05-4710/approval-and-promulgation-of-state-implementation-plans-designation-of-areas-for-air-quality)
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