EPA Approves Michigan's Plan to Maintain Clean Ozone Air
Published Date: 5/14/2026
Rule
Summary
The EPA is giving a thumbs-up to Michigan’s plan to keep the air clean and meet the 2015 ozone pollution rules. This approval means Michigan’s air quality program has the right setup to protect people and the environment. The new rule kicks in on June 15, 2026, helping Michigan stay on track without extra costs or delays.
Analyzed Economic Effects
3 provisions identified: 3 benefits, 0 costs, 0 mixed.
Michigan SIP Approved for 2015 Ozone
The EPA approved Michigan's March 8, 2019 State Implementation Plan submission as satisfying Clean Air Act section 110(a)(2)(E)(ii) for the 2015 ozone NAAQS. This approval is final and becomes effective June 15, 2026, meaning Michigan's air program element is now accepted by EPA.
No Significant Small-Entity Economic Impact
The EPA certified under the Regulatory Flexibility Act that this approval will not have a significant economic impact on a substantial number of small entities, and the rule does not impose requirements beyond existing Michigan law. That means small businesses and self-employed people in Michigan are not being saddled with new federal costs from this action.
No SIP Approval on Indian Reservation Land
The EPA stated the approved SIP is not approved to apply on any Indian reservation land or in any other area where a Tribe has demonstrated jurisdiction. In those Indian country areas, this action does not impose substantial direct costs on Tribal governments.
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