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Dearborn County 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 Dearborn County, Indiana, listed by applicable National Ambient Air Quality Standard (NAAQS).

Ozone

Lawrenceburg Township in Dearborn County makes up the Indiana portion of the Cincinnati, Ohio-Kentucky-Indiana (OH-KY-IN) area designated by U.S. EPA under the 2008 and 1997 8-hour ozone standards.

2008 8-Hour Ozone Standard
  • Documents - November 12, 2020 to May 4, 2016 [ZIP]
    • Dearborn County (Lawrenceburg Township) 8-Hour Ozone Warning Level Response Letter (November 12, 2020)
    • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan for the Indiana Portion (Lawrenceburg Township, Dearborn County, IN) of the Cincinnati, Ohio-Kentucky-Indiana 2008 8-Hour Ozone Nonattainment Area to Attainment (April 7, 2017)
    • State Implementation Plan Submittal for Indiana Regarding 326 IAC 2-6-1, Emissions Reporting Rule for Lawrenceburg Township, Dearborn County, IN (November 18, 2016)
    • Supplemental Revised 2014 Attainment Year Emissions Inventory for the Request for Redesignation Petition and Maintenance Plan for Ozone Attainment for the Indiana Portion (Lawrenceburg Township, Dearborn County, IN) of the Cincinnati-Hamilton, OH-KY-IN 2008 8-Hour Ozone Nonattainment Area (May 4, 2016)
  • Documents – February 23, 2016
    • Dearborn County (Lawrenceburg Township) 8-Hour Ozone Redesignation Request and Maintenance Plan Submittal (February 23, 2016)
1997 8-Hour Ozone Standard
  • Documents - December 13, 2019 to January 21, 2010 [ZIP]
    • Federal Register Notice Concerning U.S. EPA Approval of the Full Maintenance Plan Update for the Indiana Portion (Lawrenceburg Township, Dearborn County, IN) of the Cincinnati-Hamilton, OH-KY-IN 1997 8-Hour Ozone Area (December 13, 2019)
    • Full Maintenance Plan Update for the Indiana Portion (Lawrenceburg Township, Dearborn County, IN) of the Cincinnati-Hamilton, OH-KY-IN 1997 8-Hour Ozone Area (June 20, 2019)
    • MOBILE6.2 to MOVES MVEB Replacement Update to the Indiana Portion of the Cincinnati-Hamilton, Ohio-Kentucky-Indiana Maintenance Area under the 1997 8-Hour Ozone Standard (December 11, 2012)
    • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan, Indiana Portion of the Cincinnati-Hamilton Area to Attainment for Ozone (May 11, 2010)
    • Dearborn County (Lawrenceburg Township) 8-Hour Ozone Request for Redesignation and Maintenance Plan Submittal-Transmittal Letter, Request for Redesignation and Maintenance Plan (January 21, 2010)
      • Appendices A-G
      • Appendix H
      • Appendices I-J

Particulate Matter (PM)

1997 Annual Fine Particles (PM2.5) Standard

Lawrenceburg Township in Dearborn County makes up the Indiana portion of the Cincinnati-Hamilton, Ohio-Indiana-Kentucky (OH-IN-KY) area designated by U.S. EPA under the 1997 annual PM2.5 standard.

  • Documents - September 1, 2017 to January 25, 2011 [ZIP]
    • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan for the Indiana Portion of the Cincinnati-Hamilton, OH-IN-KY Area to Attainment of the 1997 Annual Standard for Fine Particulate Matter (September 1, 2017)
    • Revised Request for Redesignation and Maintenance Plan for the Indiana Portion of the Cincinnati-Hamilton, Ohio, Kentucky, Indiana (OH-KY-IN) 1997 Annual Fine Particles Nonattainment Area (August 19, 2016)
    • United States Court of Appeals Vacatur of Redesignation of Dearborn County (Lawrenceburg Township) for Annual Fine Particles (March 18, 2015)
    • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan, Indiana's Portion of the Cincinnati-Hamilton 1997 Annual Fine Particulate Matter Nonattainment Area to Attainment (December 23, 2011)
    • Dearborn County (Lawrenceburg Township) Annual Fine Particles Redesignation Request and Maintenance Plan Submittal-Transmittal Letter, Request for Redesignation and Maintenance Plan (January 25, 2011)
      • Appendices A-G
      • Appendix H
      • Appendices I-J

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