Particulate Matter (PM) Attainment Demonstrations

This page is dedicated to attainment demonstrations for the particulate matter (PM) National Ambient Air Quality Standards (NAAQS). An attainment demonstration describes measures Indiana is taking to improve air quality and achieve the NAAQS in areas that did not meet the standards when U.S. EPA issued designations .

IDEM submits attainment demonstrations to U.S. EPA according to requirements in the federal Clean Air Act (CAA) at Title I, Part D, Subpart 1, Section 172. Once a nonattainment area meets CAA requirements, IDEM asks U.S. EPA to redesignate the area to attainment status. IDEM’s Nonattainment Status for Indiana's Counties page contains a map of current nonattainment areas and historical information.

Following are attainment demonstrations IDEM has prepared and submitted to U.S. EPA for review under the PM standards.

1997 Annual PM2.5 Standard

Central Indiana (Hamilton, Hendricks, Marion, Morgan, and Johnson Counties)

• Documents - November 13, 2008 to June 5, 2008
  • Technical Addendum to the Attainment Demonstration and Technical Support Document for Central Indiana – November 13, 2008 [ZIP]:
    • Transmittal Letter and Revised Appendix B, Part 1
    • Revised Appendix B, Part 2
  • Attainment Demonstration and Technical Support Document for the Central Indiana Fine Particle Nonattainment Area– June 5, 2008 [ZIP]:
    • Transmittal Letter
    • Attainment Demonstration and Technical Support Document (TSD)
      • Appendices A-D
      • Appendix E
      • Appendix F-I

Lawrenceburg Township, Dearborn County

• Documents - August 25, 2016 to April 3, 2008 [ZIP]:
  • Federal Register Notice Concerning U.S. EPA Approval of RACM/RACT Analysis for the Indiana Portion of the Cincinnati-Hamilton, OH-KY-IN Nonattainment Area (Lawrenceburg Township, Dearborn County) (August 25, 2016)
  • Letter to U.S. EPA Concerning RACM/RACT Determination for the Indiana Portion of the Cincinnati-Hamilton, OH-KY-IN Nonattainment Area (Lawrenceburg Township, Dearborn County) for the 1997 Annual PM2.5 Standard (February 11, 2016)
  • Attainment Demonstration and Technical Support Document for the Indiana Portion of the Cincinnati-Hamilton, OH-KY-IN Area (Lawrenceburg Township, Dearborn County)-Transmittal Letter and Appendices A to D (July 3, 2008)
    • Appendix E
    • Appendices F-K
  • Letter Requesting Parallel Processing of the Draft Attainment Demonstration and TSD Document for the Indiana Portion of the Cincinnati-Hamilton, OH-KY-IN Area (Lawrenceburg Townships, Dearborn County) (April 3, 2008)

Jefferson County (Madison Township) and Clark and Floyd Counties

• Documents - June 24, 2008 to April 3, 2008
  • Attainment Demonstration for the Indiana Portion of the Louisville KY-IN Fine Particle Nonattainment Area (June 24, 2008)
    • Part 1 [ZIP]:
      • Transmittal Letter
      • Technical Support Document (TSD), Pages 1-12
      • TSD, Pages 13-26
      • TSD, Pages 27-35
      • TSD, Pages 36-46
      • TSD, Pages 47-58
    • Part 2 [ZIP]:
      • Appendices A-D
      • Appendix E
      • Appendices F-J
  • Letter Requesting Parallel Processing of the Draft Attainment Demonstration and TSD for the Indiana Portion of the Louisville KY-IN Fine Particle Nonattainment Area (April 3, 2008) [ZIP]