Final Actions on State Implementation Plan Components for the 2008 Ozone Air Quality Standards

January 13, 2017 - This final action finds that 15 states and the District of Columbia have failed to submit specific state implementation plan (SIP) elements to satisfy certain nonattainment area, and/or Ozone Transport Region (OTR), planning requirements for the 2008 ozone National Ambient Air Quality Standards (NAAQS).

• Final Rule (prepublication)
• Fact Sheet

Final Actions on Marginal Nonattainment Areas for the 2008 Ozone Standards
April 11, 2016 –  EPA made final determinations for whether the 36 nonattainment areas originally classified as Marginal for the 2008 ozone standards met the standards by the Clean Air Act established attainment date of July 20, 2015.

• Final Rule (PDF)(84 pp, 335 K, About PDF)
• Fact Sheet

Proposed Actions on Marginal Nonattainment Areas for the 2008 Ozone Standards
August 27, 2015 – EPA is proposing to take one of three actions for the 36 areas designated as nonattainment and classified as marginal for the 2008 ozone standards and is requesting comment on two options for establishing the submittal deadline for State Implementation Plans (SIP) revisions due for the reclassified areas.

• Proposed Rule (PDF)(36 pp, 248 K, About PDF) - Federal Register - August 27, 2015
• Fact Sheet
• Docket No. EPA-HQ-OAR-2015-0468 contains the proposed rule, final rule, public comments, and supporting documents.

Implementing the 2008 8-hour Ozone National Ambient Air Quality Standards
March 6, 2015 – EPA finalized the SIP Requirements Rule, which establishes the requirements that state, tribal, and local air quality management agencies will need to meet as they develop implementation plans for areas where air quality exceeds the 2008 National Ambient Air Quality Standards (NAAQS) for ground-level ozone.

• Final Rule (PDF)(57 pp, 616 K, About PDF) - Federal Register - March 6, 2015
• Proposed Rule (PDF)(63 pp, 678 K, About PDF) - Federal Register - June 6, 2013
• Fact Sheet
• February 15, 2015 Final State Implementation Plan (SIP) Requirements Rule for the 2008 Ozone NAAQS Presentation Slides
• Docket No. EPA-HQ-OAR-2010-0885 contains the proposed rule, final rule, public comments, and supporting documents.

Proposed Withdrawal of the Determination that Compliance with Regional Emissions Trading Programs meets Clean Air Act Requirements to Control Emissions for the 1997 Ozone and Fine Particle Air Quality Standards
June 9, 2014 - EPA proposed a rule that would revise how emission controls for power plants should be treated in state plans to attain the 1997 ozone and fine particle air quality standards.

• Proposed Rule (PDF)(9 pp, 289 K, About PDF)
• Fact Sheet
• Docket No. EPA-HQ-OAR-2009-0897 contains the proposed rule, final rule, public comments, and supporting documents.

Final Approach for Establishing Nonattainment Area Classifications and Attainment Deadlines
May 21, 2012 - Final rule directs key aspects of the implementation of the 2008 National Ambient Air Quality Standards (NAAQS) for ground-level ozone. The portions of this final rule involving attainment deadlines and revoking the 1997 NAAQS for purposes of transportation conformity were vacated by the D.C. Circuit Court in NRDC v. EPA (12/23/2014).

• Final Classifications Rule (PDF)(74 pp, 609 K, About PDF) - Federal Register - May 21, 2012
• Proposed Rule (PDF)(13 pp, 197 K, About PDF) - Federal Register - January 7, 2013
• Fact Sheet Summarizing Final Classifications Rule
• D.C. Circuit Court decision in NRDC v. EPA – December 23, 2014
• Docket No. EPA-HQ-OAR-2008-0476 contains the proposed rule, final rule, public comments, and supporting documents.