Data / Federal rules / 2025-18626

Air Plan Approval; Delaware; Motor Vehicle Inspection and Maintenance Program Certification

The Environmental Protection Agency published this final rule in the Federal Register on September 25, 2025. It took effect on October 27, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Delaware. The SIP revision addresses Clean Air Act (CAA) requirements for the enactment of a Basic vehicle emissions inspection and maintenance (I/M) program for the Delaware portion (i.e., New Castle County) of the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Nonattainment Area (Philadelphia NAA) for the 2015 8-hour ozone national ambient air quality standards (NAAQS).

Key facts

Document number: 2025-18626
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: September 25, 2025
Takes effect: October 27, 2025
Dates: This final rule is effective on October 27, 2025.
Docket: EPA-R03-OAR-2025-0133; FRL-11841-02-R3
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; 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 environmental protection · Rules on incorporation by reference · Published in September 2025

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.