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Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements | Sporos

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Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements

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).

Published

Nov 20, 2025

Effective

Jan 20, 2026

Comments Close

Dec 22, 2025

Citation

90 FR 52238

Agencies

2025-20495Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements

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Agencies (1)

EPA — Environmental Protection Agency

Topics

Air pollution control Environmental protection Incorporation by reference Intergovernmental relations Nitrogen oxides Ozone Volatile organic compounds

Docket IDs

EPA-R05-OAR-2019-0215

FRL-13010-02-R5

CFR References

40 CFR 52

Document Details

Type: Final Rule
Action: Direct final rule.
Document #: 2025-20495
Citation: 90 FR 52238
Publication Date: Nov 20, 2025
Effective Date: Jan 20, 2026
Dates: This direct final rule will be effective January 20, 2026, unless EPA receives adverse comments by December 22, 2025. If adverse comments are received, EPA will publish a timely withdrawal of the direct final rule in the Federal Register informing the public that the rule will not take effect.
Federal Register Pages: Vol. 90, pp. 52238–52241
Page Views: 138

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