# Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; State of Arizona; Boundary Redesignation; Finding of Attainment for Miami Particulate Matter of 10 Microns or Less (PM10) Nonattainment Area; Determination Regarding Applicability of Certain Clean Air Act Requirements; Correction
> **Rule** · Direct final rule. · Published 2007-03-28 · Effective 2007-05-29 · 72 FR 14422
## Document
- **Document number:** E7-5663
- **Category:** air-emissions
- **Federal Register citation:** 72 FR 14422
- **CFR reference:** 40 CFR 81
- **Publication date:** 2007-03-28
- **Effective date:** 2007-05-29
- **State:** AZ
- **EPA docket:** EPA-R09-OAR-2006-AZ-0558
## Abstract

EPA is taking direct final action to approve the State of Arizona's boundary redesignation of the Hayden/Miami PM<INF>10</INF> nonattainment area into two separate PM<INF>10</INF> nonattainment areas: Hayden and Miami. EPA is also finding that the Miami PM<INF>10</INF> nonattainment area is attaining the PM<INF>10</INF> national ambient air quality standard, and, based on this attainment finding, EPA is determining that certain Clean Air Act requirements are not applicable for so long as the Miami area shows continued attainment of the standard based on current, publicly available, quality-assured monitoring data. EPA is taking this action consistent with obligations under the Clean Air Act to act on State redesignations. Lastly, EPA is correcting two errors in previous rulemakings that involved the designations of PM<INF>10</INF> areas within the State of Arizona.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/03/28/E7-5663/approval-and-promulgation-of-implementation-plans-designation-of-areas-for-air-quality-planning)
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