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EPA/AR RIN: 2060-AR18 Publication ID: Spring 2013 
Title: Air Quality Designations for the 2010 Sulfur Dioxide Primary National Ambient Air Quality Standard 
Abstract: This final action will establish initial air quality designations for some areas of the United States under the revised 2010 SO2 Primary NAAQS. Designations of attainment, nonattainment, or unclassifiable are based on air quality monitoring data, air quality modeling data, and other relevant information pertaining to the air quality in the affected area, including whether an area contributes to a violation of the standard in a nearby area. EPA is required to make the final initial designations no later than 2 years from the June 3, 2010, promulgation of the revised NAAQS. On February 7, 2013, the EPA proposed to designate 30 potential areas as "nonattainment" in locations where available monitoring data from 2009-2011 indicate violations of the 1-hour SO2 standard. Also on February 7, the EPA signed the FR announcing a 30-day public comment period and States will have until April 8, 2013, to comment. The EPA intends to complete designations for these nonattainment areas in June 2013. The EPA is not yet prepared to respond to State and tribal area designation recommendations for other areas, and intends to address those areas in a subsequent round or multiple rounds of responses and designations. 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 81 (revision)   
Legal Authority: 42 USC 7407(d)   
Legal Deadline:
Action Source Description Date
Final  Statutory  Final initial designations are required no later than 2 years from the June 3, 2010, promulgation of the revised NAAQS  06/03/2013 
Timetable:
Action Date FR Cite
Final Rule  07/00/2013 
Additional Information: Docket #:EPA-HQ-OAR-2012-0233
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Local, State, Tribal 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Megan Brachtl
Environmental Protection Agency
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
Email: brachtl.megan@epa.gov

Rhea Jones
Environmental Protection Agency
Air and Radiation
C539-04,
Research Triangle Park, NC 27711
Phone:919 541-2940
Fax:919 541-5489
Email: jones.rhea@epa.gov