Data / Federal rules / 2024-27865

Air Plan Approval; Maryland; Determination of Attainment by the Attainment Date for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard

The Environmental Protection Agency published this final rule in the Federal Register on December 6, 2024. It took effect on January 6, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is taking final action to determine that the Anne Arundel and Baltimore County sulfur dioxide (SO<INF>2</INF>) nonattainment area attained the 2010 1-hour SO<INF>2</INF> primary national ambient air quality standard (2010 SO<INF>2</INF> NAAQS) by the applicable attainment date of September 12, 2021. This determination is based on certified ambient air quality data from the 2018-2020 monitoring period, relevant modeling analysis, and additional emissions inventory information. This action addresses the EPA's obligation under Clean Air Act (CAA) section 179(c) to determine whether the Anne Arundel and Baltimore County SO<INF>2</INF> nonattainment area (referred to hereafter as the Anne Arundel-Baltimore County Area, or simply the Area) attained the 2010 SO<INF>2</INF> NAAQS by the September 12, 2021 attainment date.

Key facts

Document number: 2024-27865
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 6, 2024
Takes effect: January 6, 2025
Dates: This final rule is effective on January 6, 2025.
Docket: EPA-R03-OAR-2024-0152; FRL-11858-02-R3
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Reporting and recordkeeping requirements; Sulfur oxides
Pages: 2

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in December 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.