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EPA/AR RIN: 2060-AP38 Publication ID: Spring 2009 
Title: ●Review of the 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 March 23, 2008, the EPA published a final rule to revise the primary and secondary NAAQS for ozone to provide increased protection of public health and welfare. With regard to the primary standard for ozone, EPA revised the level of the 8-hour ozone standard to 0.075 ppm. With regard to the secondary ozone standard, EPA made it identical in all respects to the primary ozone standard, as revised. Petitions for review were filed in the D.C. Circuit Court of Appeals and EPA officials are currently in the process of reviewing the March 2008 Ozone NAAQS Rule to determine whether the standards established in the Ozone NAAQS Rule should be maintained, modified or otherwise reconsidered. EPA has also initiated the next 5-year review of the ozone NAAQS. The review began in October 2008 with a workshop to discuss key policy-relevant issues around which EPA would structure the review. The workshop discussions provide important input as OAR and ORD consider the appropriate design and scope of the major elements of the review: an integrated plan highlighting the key policy-relevant issues prepared by OAR and ORD, an Integrated Science Assessment prepared by ORD, and a Risk/Exposure Assessment prepared by OAR. EPA will solicit comments from the Clean Air Scientific Advisory Committee (CASAC), an independent science advisory committee established to review the scientific and technical basis of the NAAQS, and the public several times during the development of the critical documents identified above. The Administrator will propose to retain or revise the ozone NAAQS, as appropriate, taking into consideration CASAC and public comment. Input received during the public comment period for the proposed decision will be considered in the Administrator's final decision. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Long-Term Actions 
Major: Yes  Unfunded Mandates: Undetermined 
CFR Citation: Not Yet Determined     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: Not Yet Determined   
Legal Deadline:
Action Source Description Date
NPRM  Statutory  this is based on the requirement in the Act that EPA review air quality criteria and NAAQS every 5 years.  06/12/2012 
Final  Statutory  this is based on the requirement in the Act that EPA review air quality criteria and NAAQS every 5 years.  03/12/2013 
Timetable:
Action Date FR Cite
NPRM  06/00/2012    
Final Action  03/00/2013    
Additional Information: SAN No. 5306; EPA Docket information: EPA-HQ-OAR-2008-0699
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.  Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Dave Mckee
Environmental Protection Agency
Air and Radiation
C504-06,
Research Triangle Park, NC 27711
Phone:919 541-5288
Fax:919 541-0237
Email: Mckee.Dave@epamail.epa.gov

Karen Martin
Environmental Protection Agency
Air and Radiation
C504-06,
Research Triangle Park, NC 27711
Phone:919 541-5274
Fax:919 541-0237
Email: Martin.Karen@epamail.epa.gov