Proposed Rules. Proposed rule

Agency: Environmental Protection Agency (EPA)
Action: Proposed rule
Citation: FR Doc. 2025-20494 · EPA-R05-OAR-2019-0215; FRL-13010-01-R5 · 40 CFR 52

Summary

The Environmental Protection Agency (EPA) is approving an element of a State Implementation Plan (SIP) submission from Michigan regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements ensure that the structural components of each State's air quality management program are adequate to meet CAA requirements. This action pertains to CAA section 110(a)(2)(E)(ii).

Dates

Comments must be received on or before December 22, 2025.

Supplementary Information

In the Final Rules section of this Federal Register , EPA is approving the State's SIP submittal as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If no relevant adverse comments are received in response to this rule, no further activity is contemplated. If EPA receives such comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time. Please note that if EPA receives adverse comment on an amendment, paragraph, or section of this rule and if that provision may be severed from the remainder of the rule, EPA may adopt as final those provisions of the rule that are not the subject of an adverse comment. For additional information, see the direct final rule which is located in the Rules section of this Federal Register . Dated: November 4, 2025. Anne Vogel, Regional Administrator, Region 5. [FR Doc. 2025-20494 Filed 11-19-25; 8:45 am]