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EPA/OAR RIN: 2060-AV48 Publication ID: Spring 2022 
Title: Implementing Regulations Under 40 CFR Part 60 Subpart Ba Adoption and Submittal of State Plans for Designated Facilities 

The Clean Air Act (CAA) section 111(d) directs the EPA to promulgate a procedure “similar” to that provided by CAA section 110, under which states submit 111(d) plans for regulatory implementation to the EPA. In 1975, EPA addressed this requirement by promulgating “implementing regulations” under 40 CFR part 60, subpart B. These implementing regulations contain, among other things, deadlines for the submission of, and for EPA’s action on, “state plans,” as well as deadlines for the promulgation of related “federal plans.” In 2019 the EPA finalized 40 CFR part 60, subpart Ba, a new subpart that updated the implementing regulations for prospective emission guidelines. However, the United States Court of Appeals for the District of Columbia Circuit (in American Lung Association v. EPA, No. 19-1140) vacated the subpart Ba State and Federal plan timelines due to a finding of inadequate justification. This action will amend the timelines in subpart Ba consistent with the court vacatur, and will include additional provisions providing tools to the EPA and states to aid in implementation of emission guidelines.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 60 Ba   
Legal Authority: 42 U.S.C. 7411 Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  10/00/2022 
Final Rule  04/00/2023 
Additional Information: .
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Michelle Bergin
Environmental Protection Agency
Office of Air and Radiation
Research Triangle Park, NC 27711
Phone:919 541-2726

Elineth Torres
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D205-02,
Research Triangle Park, NC 27709
Phone:919 541-4347