# Approval and Promulgation of Air Quality Implementation Plans; Maryland; Determination of Attainment of the 1997 8-Hour Ozone National Ambient Air Quality Standard for the Baltimore, Maryland Serious Nonattainment Area
> **Rule** · Final rule. · Published 2015-05-26 · Effective 2015-06-25 · 80 FR 29970
## Document
- **Document number:** 2015-12488
- **Category:** air-emissions
- **Federal Register citation:** 80 FR 29970
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-05-26
- **Effective date:** 2015-06-25
- **State:** MD
- **EPA docket:** EPA-R03-OAR-2014-0883
## Abstract

The Environmental Protection Agency (EPA) has determined that the Baltimore, Maryland Serious Nonattainment Area (Baltimore Area) has attained the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). This determination is based upon complete, quality-assured, and certified ambient air monitoring data that shows the Baltimore Area has monitored attainment of the 1997 8-hour ozone NAAQS for the 2012- 2014 monitoring period. EPA is finding the Baltimore Area to be in attainment in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/05/26/2015-12488/approval-and-promulgation-of-air-quality-implementation-plans-maryland-determination-of-attainment)
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