Air Plan Approval; District of Columbia; Enhanced Vehicle Emission Inspection and Maintenance (I/M) Program Revision and Basic I/M Program Certification for Moderate Nonattainment Areas Under the 2015 Ozone NAAQS
- Published
- Nov 5, 2026
- Comments close
- Dec 7, 2026
- Citation
- 91 FR 69753
- Docket
- EPA-R03-OAR-2026-1024, FRL-12072-01-R3
Proposed rule.
Summary
The Environmental Protection Agency is proposing to approve a revision to the District of Columbia’s State Implementation Plan that updates its vehicle‑emissions inspection and maintenance (I/M) program. The change incorporates recent upgrades to the District’s “enhanced” I/M system and confirms that the program satisfies federal Clean Air Act requirements for a basic I/M program in the Washington, DC‑Maryland‑Virginia area that still does not meet the 2015 ozone standard. By formally accepting the revision, the EPA would recognize that the District’s inspections help keep ozone‑forming pollutants from cars and trucks at lower levels. The rule is issued by the EPA and primarily affects the District’s government agencies that manage the I/M program, as well as motorists and vehicle owners in Washington, DC who must have their vehicles inspected. The proposal was published on November 5, 2026, and the public may submit comments through December 7, 2026. After the comment period closes, the EPA will review the feedback, make any necessary adjustments, and then issue a final rule that would make the SIP revision officially part of the District’s air‑quality plan.
AI-generated summary — verify against the Federal Register text.
Official abstract
The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the District of Columbia (DC, or the District). This revision incorporates regulatory updates made to the District's Enhanced motor vehicle emissions inspection and maintenance (I/M) program since the EPA's last SIP approval. The SIP revision also serves to certify that the District's existing Enhanced I/M program meets Clean Air Act (CAA) requirements for a Basic I/M program for the District's portion of the Washington, DC-MD-VA nonattainment area (the Washington nonattainment area) for the 2015 Ozone National Ambient Air Quality Standard (NAAQS).
Related legislation
Matched by topic similarity; not an official cross-reference.
Topics
Track this rulemaking
Get alerts when this document changes status or its comment period closes, plus the bills that connect to it.
Sign up free