# Final 8-Hour Ozone National Ambient Air Quality Standards Designations for the Early Action Compact Areas
> **Rule** · Final rule. · Published 2008-04-02 · Effective 2008-04-15 · 73 FR 17897
## Document
- **Document number:** E8-6825
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 17897
- **CFR reference:** 40 CFR 81
- **Publication date:** 2008-04-02
- **Effective date:** 2008-04-15
- **EPA docket:** EPA-HQ-OAR-2008-0006
## Abstract

The EPA is designating 13 Early Action Compact (EAC) Areas as attainment for the 8-hour ozone National Ambient Air Quality Standard (NAAQS). The EAC areas agreed to reduce ground-level ozone pollution earlier than the Clean Air Act (CAA) required and to demonstrate attainment with the 8-hour ozone NAAQS by December 31, 2007. The States in which these 13 areas are located have submitted quality-assured data indicating that the areas are in attainment for the 8-hour ozone NAAQS based on ambient air monitoring data from 2005, 2006 and 2007. In addition, consistent with EPA's implementing regulations, the 1-hour ozone NAAQS will no longer apply in each of these areas one year after the effective date of the designation. We are modifying the 8-hour ozone NAAQS tables in the regulations to reflect the attainment designation for the 13 EAC areas and the 1-hour ozone NAAQS tables in the regulations to reflect that the 1-hour standard will no longer apply in these areas as of April 15, 2009. Additionally, we are modifying the 8-hour and 1-hour ozone NAAQS tables in the regulations to reflect the nonattainment designation for the Denver EAC area, which became effective November 20, 2007 and to reflect that the 1-hour standard will no longer apply in that area as of November 20, 2008.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/04/02/E8-6825/final-8-hour-ozone-national-ambient-air-quality-standards-designations-for-the-early-action-compact)
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