# Air Plan Approval; Delaware; Motor Vehicle Inspection and Maintenance Program Certification
> **Rule** · Final rule. · Published 2025-09-25 · Effective 2025-10-27 · 90 FR 46067
## Document
- **Document number:** 2025-18626
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 46067
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-09-25
- **Effective date:** 2025-10-27
- **State:** DE
- **EPA docket:** EPA-R03-OAR-2025-0133
## Abstract

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).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/09/25/2025-18626/air-plan-approval-delaware-motor-vehicle-inspection-and-maintenance-program-certification)
---
*AI Analytics · CC0 1.0*