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EPA/OAR RIN: 2060-AR57 Publication ID: Fall 2017 
Title: Review of the Primary National Ambient Air Quality Standards for Oxides of Nitrogen 

Under the Clean Air Act, as amended, the EPA is required to review and if appropriate revise the air quality criteria and national ambient air quality standards (NAAQS) every five years. On February 9, 2010, the EPA published a final rule revising the primary (health-based) NO2 NAAQS to provide increased protection for public health. This review includes the preparation of an Integrated Review Plan, an Integrated Science Assessment, and, if warranted, a Risk/Exposure Assessment, and also a Policy Assessment by the EPA, with opportunities for review by the EPA's Clean Air Scientific Advisory Committee and the public. These documents will inform the Administrator's decision as to whether to retain or revise the current standards. The proposed decision was published in the Federal Register with opportunity for public comment. The Administrator's final decisions will take into consideration these documents, CASAC advice, and public comment on the proposed decision.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
EO 13771 Designation: Other 
CFR Citation: 40 CFR 50    40 CFR 58   
Legal Authority: 42 U.S.C. 7401 et seq.   
Legal Deadline:
Action Source Description Date
Final  Judicial  signature by 4/6/18  04/06/2018 
NPRM  Judicial  signed by 7/14/17  07/14/2017 
Action Date FR Cite
NPRM  07/26/2017  82 FR 34792   
Final Rule  05/00/2018 
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:
Breanna Alman
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code C539-02,
Research Triangle Park, NC 27709
Phone:919 541-2351

Karen Wesson
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code C504-06,
Research Triangle Park, NC 27711
Phone:919 541-3515