# Air Plan Approval; Pennsylvania; Motor Vehicle Inspection and Maintenance Program Certification for Moderate Nonattainment Under the 2015 Ozone National Ambient Air Quality Standards
> **Rule** · Final rule. · Published 2026-01-29 · Effective 2026-03-02 · 91 FR 3834
## Document
- **Document number:** 2026-01762
- **Category:** air-emissions
- **Federal Register citation:** 91 FR 3834
- **CFR reference:** 40 CFR 52
- **Publication date:** 2026-01-29
- **Effective date:** 2026-03-02
- **State:** PA
- **EPA docket:** EPA-R03-OAR-2025-0130
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. This SIP revision addresses Clean Air Act (CAA) requirements for the enactment of a Basic vehicle emissions inspection and maintenance (I/M) program for the five counties comprising the Pennsylvania portion of the Philadelphia-Wilmington-Atlantic City, PA- NJ-MD-DE Moderate nonattainment area (Philadelphia nonattainment area) for the 2015 8-hour ozone national ambient air quality standards (NAAQS). The SIP revision demonstrates that Pennsylvania's existing I/M program in the Philadelphia nonattainment area meets applicable requirements for a Basic I/M program. The EPA is approving this SIP revision to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/01/29/2026-01762/air-plan-approval-pennsylvania-motor-vehicle-inspection-and-maintenance-program-certification-for)
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