Central Indiana Requests for Redesignation and Maintenance Plans

Following are Requests for Redesignation and Maintenance Plans Indiana has submitted to United States Environmental Protection Agency (U.S. EPA) for the Central Indiana area, listed by applicable National Ambient Air Quality Standard (NAAQS).

Ozone

1997 8-Hour Ozone Standard

Boone, Hamilton, Hancock, Hendricks, Johnson, Madison, Marion, Morgan, and Shelby counties make up the Central Indiana area designated by U.S. EPA under the 1997 8-hour ozone standard.

• Documents - December 13, 2019 to March 26, 2007 [ZIP]
  • Federal Register Notice Concerning U.S. EPA Approval and Promulgation of the Full Maintenance Plan Update for the Indianapolis, Indiana 1997 8-Hour Ozone Area (December 13, 2019)
  • Full Maintenance Plan Update for the Indianapolis, Indiana 1997 8-Hour Ozone Area (June 20, 2019)
  • MOBILE6.2 to MOVES MVEB Replacement Update to the Request for Redesignation Petition and Maintenance Plan for the 1997 8-Hour Ozone Standard for the Central Indiana Nonattainment Area (April 16, 2012)
  • Federal Register Notice Concerning U.S. EPA Redesignation of Central Indiana to Attainment of the 8-Hour Ozone Standard (October 19, 2007)
  • Central Indiana 8-Hour Ozone Request for Redesignation and Maintenance Plan Submittal (March 26, 2007)

Particulate Matter (PM)

1997 Annual Fine Particles (PM2.5) Standard

Hamilton, Hendricks, Johnson, Marion, and Morgan counties make up the Central Indiana area designated by U.S. EPA under the 1997 Annual PM2.5 standard.

• Documents - July 11, 2013 to May 31, 2011 [ZIP]
  • Federal Register Notice Concerning U.S. EPA Redesignation of the Indianapolis Area to Attainment of the 1997 Annual Fine Particles Standard (July 11, 2013)
  • MOBILE6.2 to MOVES MVEB Replacement Update to the Request for Redesignation Petition and Maintenance Plan Under the Annual National Ambient Air Quality Standard for Fine Particles for the Central Indiana Nonattainment Area (January 17, 2013)
  • Status Briefing Concerning IDEM’s Request for Redesignation (July 30, 2012)
  • Central Indiana Annual Fine Particles Request for Redesignation and Maintenance Plan Submittal, Transmittal Letter and Technical Support Document (May 31, 2011)
    • Appendices A-H
    • Appendix I
    • Appendices J-K
• Document - October 20, 2009 [ZIP]
  • Central Indiana Annual Fine Particles Request for Redesignation and Maintenance Plan Submittal, Transmittal Letter and Technical Support Document
    • Appendices A-G
    • Appendix H
    • Appendix I-J

View redesignation and maintenance plans specific to Marion County and Morgan County.