# Designations of Areas for Air Quality Planning Purposes; Maryland; Baltimore, MD 2015 8-Hour Ozone Nonattainment Area; Reclassification to Serious
> **Rule** · Final rule. · Published 2024-08-01 · Effective 2024-08-01 · 89 FR 62663
## Document
- **Document number:** 2024-16899
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 62663
- **CFR reference:** 40 CFR 81
- **Publication date:** 2024-08-01
- **Effective date:** 2024-08-01
- **State:** MD
- **EPA docket:** EPA-R03-OAR-2024-0352
## Abstract

Under the Clean Air Act (CAA or the "Act"), the Environmental Protection Agency (EPA) is granting a request from the State of Maryland to reclassify the Baltimore, Maryland ozone nonattainment area from "Moderate" to "Serious" for the 2015 8-hour ozone national ambient air quality standards (2015 ozone NAAQS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/08/01/2024-16899/designations-of-areas-for-air-quality-planning-purposes-maryland-baltimore-md-2015-8-hour-ozone)
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