Data / Federal rules / 2024-14990

Air Plan Approval; New Hampshire; Ambient Air Quality Standards

The Environmental Protection Agency published this proposed rule in the Federal Register on July 11, 2024. Comments closed on August 12, 2024.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve most of a State Implementation Plan (SIP) revision submitted by the State of New Hampshire. This revision updates the State regulation containing ambient air quality standards. EPA is proposing to approve all the State's updated standards, except the primary annual fine particle (PM<INF>2.5</INF>) standard, which we propose to conditionally approve because it does not match EPA's current National Ambient Air Quality Standard for PM<INF>2.5</INF>. This action is being taken under the Clean Air Act (CAA).

Key facts

Document number: 2024-14990
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: July 11, 2024
Comments due: August 12, 2024
Dates: Written comments must be received on or before August 12, 2024.
Docket: EPA-R01-OAR-2024-0255; FRL-12071-01-R1
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in July 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.