# Approval and Promulgation of Air Quality Implementation Plans; Washington; Determination of Clean Data for the 2006 24-Hour Fine Particulate Standard for the Tacoma, Pierce County Nonattainment Area
> **Rule** · Final rule. · Published 2012-09-04 · Effective 2012-10-04 · 77 FR 53772
## Document
- **Document number:** 2012-21560
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 53772
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-09-04
- **Effective date:** 2012-10-04
- **State:** WA
- **EPA docket:** EPA-R10-OAR-2012-0380
## Abstract

EPA is making a final determination that the Tacoma, Pierce County nonattainment area (hereafter referred to as "Tacoma, Pierce County" or "the area") has clean data for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS). This determination is based upon complete, quality- assured, quality-controlled, and certified ambient air monitoring data showing that the area has monitored attainment of the 2006 PM<INF>2.5</INF> NAAQS based on the 2009-2011 data available in EPA's Air Quality System (AQS) database. EPA's determination relieves the area from the requirements to submit an attainment demonstration, associated reasonably available control measures, a reasonable further progress plan, contingency measures, and other planning State Implementation Plans (SIPs) related to attainment of the standard for so long as the area continues to meet the 24-hour 2006 PM<INF>2.5</INF> NAAQS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/09/04/2012-21560/approval-and-promulgation-of-air-quality-implementation-plans-washington-determination-of-clean-data)
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