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EPA/AR

RIN: 2060-AP27

Publication ID: Spring 2009

Title: Air Quality Designations for the 24-Hour Fine Particle (PM2.5) National Ambient Air Quality Standards
Abstract: This action would finalize the designation of each area of the country as attainment, nonattainment, or unclassifiable with regard to the 2006 24-hour PM2.5 NAAQS. The notice for these final area designations was signed on December 22, 2008, but was not published and is currently under review. In 2006, EPA revised the 24-hour PM2.5 NAAQS from 65 micrograms per cubic meter (µg/m3) to 35 µg/m3 and retained the annual PM2.5 NAAQS of 15 µg/m3. The revised 24-hour PM2.5 NAAQS was published on October 17, 2006 (71 FR 61144) and became effective on December 18, 2006. The 24-hour PM2.5 NAAQS was revised based on a number of health studies showing that short-term exposure to PM2.5 is associated with increased mortality and a range of serious health effects, including aggravation of lung disease, asthma attacks, and heart problems. The designations given in this rule are for the 2006 24-hour PM2.5 NAAQS. The area designations for the 1997 24-hour PM2.5 NAAQS remain the same. EPA has not previously revoked, and is not by this action revoking, the 1997 24-hour PM2.5 NAAQS.
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
Legal Authority: CAA 107(d)

Legal Deadline:

Action	Source	Description	Date
Final	Statutory	CAA section 107 establishes the date for the final rule.	12/18/2008

Timetable:

Action	Date	FR Cite
Notice--Extension of State Submittal Date	06/00/2009
Final Action	To Be Determined

Additional Information: SAN No. 5282; Regional Offices play a significant role in the designations process.; EPA Docket information: EPA-HQ-OAR-2007-0562
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: Amy Vasu Environmental Protection Agency Air and Radiation D205-01, Research Triangle Park, NC 27711 Phone:919 541-0107 Fax:919 541-0824 Email: vasu.amy@epa.gov Patrick Lessard Environmental Protection Agency Air and Radiation C539-01, Research Triangle Park, NC 27711 Phone:919 541-5383 Fax:919 541-4028 Email: lessard.patrick@epa.gov