EPA Finalizes Michigan Ozone Plan Approval
Published Date: 11/20/2025
Rule
Summary
The EPA is giving a thumbs-up to Michigan’s plan to keep the air clean by meeting federal ozone pollution rules from 2015. This means Michigan’s air quality programs are up to snuff and ready to protect everyone’s health. The rule kicks in on January 20, 2026, unless folks send in concerns by December 22, 2025—no extra costs for businesses or residents.
Analyzed Economic Effects
4 provisions identified: 3 benefits, 0 costs, 1 mixed.
EPA Approves Michigan's Ozone SIP Element
EPA approved Michigan's March 8, 2019 State Implementation Plan submission as meeting the Clean Air Act section 110(a)(2)(E)(ii) requirement for the 2015 ozone National Ambient Air Quality Standard. This approval is effective January 20, 2026 unless EPA receives adverse comments by December 22, 2025.
No New Federal Costs for Michigan Businesses
EPA states this action merely approves State law as meeting Federal requirements and ‘‘does not impose additional requirements beyond those imposed by State law.’' EPA also certified the action as not having a significant economic impact on a substantial number of small entities. The action is effective January 20, 2026 unless adverse comments are received by December 22, 2025.
State Boards Abolished; EGLE Director Holds Permit Authority
The document records that Michigan abolished the Environmental Rules Review Committee and the Environmental Permit Review Commission (Executive Order 2024-5, effective September 17, 2024), and that authority to hear permit review appeals and to approve permits now lies with the Director of EGLE or the Director's designee. EPA therefore finds CAA section 128(a)(1) does not apply to Michigan.
Does Not Apply on Indian Reservation Land
EPA states the SIP approval is not approved to apply on any Indian reservation land or in any other area where an Indian Tribe has demonstrated jurisdiction; in those areas the rule ‘‘does not have Tribal implications and will not impose substantial direct costs on Tribal governments.’'
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