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EPA/OAR RIN: 2060-AT33 Publication ID: Spring 2017 
Title: ●Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards 

As required by Clean Air Act, in this action, the Administrator will establish the air quality designations for all areas of the United States under the 2015 ozone NAAQS.  The designations "attainment", "nonattainment", or "unclassifiable" are based upon air quality monitoring data and other relevant information pertaining to the air quality in the affected area, including whether an area contains emissions sources that contribute to a violation of the standard in a nearby area. Under the schedule prescribed in the CAA, the Administrator is required to promulgate designations for the 2015 ozone NAAQS no later than  October 1, 2017 , and EPA may extended for up to 1 year in the event the Administrator has insufficient information to promulgate the designations. EPA extended the deadline to  October 1, 2018 . If the Administrator intends to modify any of the designation recommendations previously provided by States or Tribes, he must notify those states or tribes no less than 120 days prior to promulgating final designations and provide them an opportunity to demonstrate why an proposed modification is inappropriate.


Agency: Environmental Protection Agency(EPA)  Priority: Routine and Frequent 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Long-Term Actions 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 81   
Legal Authority: 42 U.S.C. 7401 et seq.   
Legal Deadline:
Action Source Description Date
Final  Statutory  Clean Air Act deadline (2 years from promulgations of new/revised NAAQS). Ozone NAAQS revised on Oct. 1, 2015.  09/29/2017 

Overall Description of Deadline: Statutory

Action Date FR Cite
Final Rule  10/00/2018 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Denise W. Scott
Environmental Protection Agency
Office of Air and Radiation
MD-15, 109 T.W. Alexander Drive,
Research Triangle Park, NC 27711
Phone:919 541-0870

Carla Oldham
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code C539-04,
Research Triangle Park, NC 27711
Phone:919 541-3347
Fax:919 541-0824