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EPA/OAR RIN: 2060-AV32 Publication ID: Spring 2021 
Title: ●Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date, and Reclassification of Marginal Nonattainment Areas for the 2015 Ozone National Ambient Air Quality Standards 

This action relates to determinations of whether certain nonattainment areas for the 2015 ozone National Ambient Air Quality Standards (NAAQS) attained by the attainment date, based on the areas' design values as of the attainment date. Specifically, the action proposes determinations for 2015 ozone NAAQS nonattainment areas currently classified as Marginal. All Marginal areas must attain the ozone standard within 3 years of the effective date of the designation, or by August 3, 2021 (September 24, 2021 for the San Antonio, TX area), unless an area is granted a 1-year attainment date extension. If a Marginal area fails to attain the standard by the attainment date, the area will be reclassified to the classification applicable to the area's design value by operation law. In this notice, the U.S. Environmental Protection Agency proposes to find that certain Marginal nonattainment areas attained the standard by the attainment date, while others failed to attain and will be reclassified or qualify for a 1-year attainment date extension.

Agency: Environmental Protection Agency(EPA)  Priority: Routine and Frequent 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 52    40 CFR 81   
Legal Authority: 42 U.S.C. 7401 to 7671q   
Legal Deadline:
Action Source Description Date
Final  Statutory  Mandatory duty under CAA 181(b)(2)(A)  02/03/2022 
Action Date FR Cite
NPRM  08/00/2021 
Final Rule  03/00/2022 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Robert Lingard
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code C539-01,
Research Triangle Park, NC 27709
Phone:919 541-5272

Megan Brachtl
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code C539-014,
Research Triangle Park, NC 27711
Phone:919 541-2648
Fax:919 541-5315