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EPA/OAR RIN: 2060-AU40 Publication ID: Fall 2019 
Title: Review of the Primary National Ambient Air Quality Standards for Ozone 
Abstract:

Under the Clean Air Act Amendments of 1977, EPA is required to review and if appropriate revise the air quality criteria for the primary (health-based) and secondary (welfare-based) national ambient air quality standards (NAAQS) every 5 years. On October 26, 2015, EPA published a final rule revising the NAAQS for ozone to provide increased protection for public health and welfare. The current review includes the preparation by EPA of an Integrated Review Plan, an Integrated Science Assessment, and, if warranted, a Risk/Exposure Assessment, which includes a risk/exposure assessment and also a Policy Assessment by EPA, with opportunities for review by EPA's Clean Air Scientific Advisory Committee and the public. These documents inform the Administrator's proposed decision as to whether to retain or revise the current standards. This decision will be published in the Federal Register with opportunity provided 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: Proposed Rule Stage 
Major: Undetermined  Unfunded Mandates: No 
EO 13771 Designation: Other 
CFR Citation: 40 CFR 50   
Legal Authority: 42 U.S.C. 7401 et seq.   
Legal Deadline:  None

Statement of Need:

Under the Clean Air Act Amendments of 1977, EPA is required to review and if appropriate revise the air quality criteria and national ambient air quality standards (NAAQS) every 5 years. On October 26, 2015, EPA published a final rule revising the NAAQS for ozone to provide increased protection for public health and welfare.

Summary of the Legal Basis:

Under the Clean Air Act Amendments of 1977, EPA is required to review and if appropriate revise the air quality criteria and the primary (health-based) national ambient air quality standards (NAAQS) every 5 years.

Alternatives:

The main alternative for the Administrator’s decision on the review of the national ambient air quality standards for ozone is whether to retain or revise the existing standards.

Anticipated Costs and Benefits:

The Clean Air Act makes clear that the economic and technical feasibility of attaining standards are not to be considered in setting or revising the NAAQS, although such factors may be considered in the development of State plans to implement the standards. Accordingly, when the Agency proposes revisions to the standards, the Agency prepares a Regulatory Impact Analysis (RIA) to provide the public with illustrative estimates of the potential costs and health and welfare benefits of attaining the revised standards.

Risks:

The current review will include the preparation by EPA of an Integrated Review Plan, an Integrated Science Assessment, and also a Policy Assessment, which includes a risk/exposure assessment, with opportunities for review by the EPA's Clean Air Scientific Advisory Committee (CASAC) and the public. These documents will inform the Administrator's proposed decision as to whether to retain or revise the current standards. This proposed decision will be published in the Federal Register with opportunity provided for public comment. The Administrator's final decisions will take into consideration these documents, CASAC advice, and public comment on the proposed decision.

Timetable:
Action Date FR Cite
NPRM  04/00/2020 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Undetermined 
Federalism: Undetermined 
Included in the Regulatory Plan: Yes 
RIN Information URL: https://www.epa.gov/naaqs/ozone-o3-air-quality-standards  
RIN Data Printed in the FR: No 
Agency Contact:
Deirdre Murphy
Environmental Protection Agency
Office of Air and Radiation
C539-02,
Research Triangle Park, NC 27709
Phone:919 541-0729
Fax:919 541-0840
Email: murphy.deirdre@epa.gov

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
Email: wesson.karen@epa.gov