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EPA/OAR RIN: 2060-AW88 Publication ID: 2026 
Title: Interstate Transport Plan Review for the 2015 Ozone NAAQS – Phase 2 
Abstract:

The EPA is revisiting previous actions proposing or finalizing the disapproval or partial disapproval of certain State Implementation Plans and finalizing Federal Implementation Plans (FIPs) addressing states' interstate transport obligations under the 2015 ozone National Ambient Air Quality Standards (NAAQS). This proposed rule is designed to comport with Kentucky v. EPA, 123 F.4th 447 (6th Cir. 2024) and Texas v. EPA, 132 F.4th 808 (5th Cir. 2025).

 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Undetermined  Unfunded Mandates: No 
EO 14192 Designation: Deregulatory 
CFR Citation: 40 CFR 52    40 CFR 75    40 CFR 78    40 CFR 97   
Legal Authority: 42. U.S.C. 7410   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  07/00/2026 
Final Rule  To Be Determined 
Additional Information: Docket #: EPA-HQ-OAR-2025-0192.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Thomas Uher
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, C545C,
Research Triangle Park, NC 27711
Phone:919 541-5534
Email: uher.thomas@epa.gov

Gwyndolyn Sofka
Environmental Protection Agency
Office of Air and Radiation
109 TW Alexander Drive,
Research Triangle Park, NC 27709
Phone:919 541-5121
Email: sofka.gwyndolyn@epa.gov