Lake and Porter Counties Requests for Redesignation and Maintenance Plans

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

Ozone

2008 8-Hour Ozone Standard

• Onroad Emissions Motor Vehicle Emissions Budget (MVEB) Replacement and Emissions Update for the Indiana Portion (Lake and Porter Counties) of the Chicago-Naperville, IL-IN-WI 2008 8-Hour Ozone Standard Maintenance Area (September 21, 2023) [ZIP]
• Documents – June 28, 2022 to November 30, 2017 [ZIP]
  • Request for Withdrawal of the February 27, 2020 Request for Redesignation and Maintenance Plan for Indiana’s Portion (Lake and Porter Counties) of the Chicago-Naperville, IL-IN-WI, 2008 8-Hour Ozone Nonattainment Area (June 28, 2022)
  • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan for Attainment of Indiana’s Portion (Lake and Porter Counties) of the Chicago-Naperville, Illinois-Indiana-Wisconsin (IL-IN-WI), 2008 8-Hour Nonattainment Area (May 20, 2022)
  • Supplements to the Technical Addendum to Section 182(c)(3) Certification of the Enhanced I/M Program and Request for Redesignation and Maintenance Plan for Attainment of Indiana’s Portion (Lake and Porter Counties) of the Chicago-Naperville, IL-IN-WI, 2008 8-Hour Nonattainment Area (April 8, 2022)
  • Request for Redesignation and Maintenance Plan for Attainment of Indiana’s Portion (Lake and Porter Counties) of the Chicago-Naperville, Illinois-Indiana-Wisconsin (IL-IN-WI), 2008 8-Hour Nonattainment Area (December 6, 2021)
  • Request for Redesignation and Maintenance Plan for Attainment of Indiana’s Portion (Lake and Porter Counties) of the Chicago-Naperville, Illinois-Indiana-Wisconsin (IL-IN-WI), 2008 8-Hour Ozone Nonattainment Area (February 27, 2020)
  • Withdrawal of the Request for Redesignation and Maintenance Plan for Ozone Attainment in Indiana's Portion (Lake and Porter Counties) of the Chicago-Naperville, Illinois-Indiana-Wisconsin (IL-IN-WI), 2008 8-Hour Ozone Nonattainment Area (November 30, 2017)
• Request for Redesignation and Maintenance Plan for Ozone Attainment in Indiana's Portion (Lake and Porter Counties) of the Chicago-Naperville, Illinois-Indiana-Wisconsin (IL-IN-WI) 2008 8-Hour Ozone Nonattainment Area Submittal (June 15, 2016) [ZIP]:
  • Transmittal Letter and Technical Support Document (TSD) Including Appendices A-F
    • Attachment 1 of Appendix F
    • Attachment 2 of Appendix F and Appendices G-H
• Documents – December 10, 2014 to December 5, 2012 [ZIP]
  • U.S. EPA’s Disapproval of the Redesignation Request and Maintenance Plan for Lake and Porter Counties, Indiana under the 2008 8-Hour Ozone Standard (December 10, 2014)
  • Indiana’s Response to U.S. EPA’s Proposed Disapproval of the Request and Maintenance Plan for Lake and Porter Counties, Indiana under the 2008 8-Hour Standard (July 29, 2014)
  • Request for Redesignation Petition and Maintenance Plan Under the National Ambient Air Quality Standard for 2008 8-Hour Ozone Nonattainment Area (Lake and Porter Counties, Indiana), Transmittal Letter and Technical Support Document Including Appendices A-B (December 5, 2012)
    • Appendix C
    • Appendix D
    • Appendix E

1997 8-Hour Ozone Standard

• Documents – December 13, 2019 to July 20, 2009 [ZIP]
  • Federal Register Notice Concerning U.S. EPA Approval of the Full Maintenance Plan Update for the Indiana Portion of the Chicago-Gary-Lake, IL-IN, 1997 8-Hour Ozone Area (December 13, 2019)
  • Full Maintenance Plan Update for the Indiana Portion of the Chicago-Gary-Lake, IL-IN, 1997 8-Hour Ozone Area (June 20, 2019)
  • Onroad Emissions MOBILE6.2 to MOVES MVEB Replacement Update to the Maintenance Plan for the 1997 8-Hour Ozone Standard for Lake and Porter Counties, Indiana (February 1, 2013)
  • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan for Lake and Porter Counties 8-Hour Ozone to Attainment for Ozone (May 11, 2010)
  • Lake and Porter Counties 8-Hour Ozone Redesignation Request and Maintenance Plan Technical Addendum (July 20, 2009)
• Request for Redesignation and Maintenance Plan for Ozone Attainment in the 8-Hour Ozone Nonattainment Area-Lake and Porter Counties Submittal (June 5, 2009)
  • Transmittal Letter and Request for Redesignation and Maintenance Plan Including Appendices A-D [ZIP]
  • Reasonably Available Control Technology (RACT) State Implementation Plan Documents Cover Sheet, Negative Declaration Letter for Fiberglass Boat Manufacturing Control Techniques Guidelines, and Section 182(f) Exemption Request for Sources of Nitrogen Oxides (NOx) [ZIP]
    • LSA Documents
      • #09-220: 20090429-IR-326090220FDA [PDF]
      • #09-221: 20090429-IR-326090221FDA [PDF]
      • #09-222: 20090429-IR-326090222FDA [PDF]
  • 8-Hour Ozone Attainment Demonstration and Technical Support Document for the Indiana Portion of the Chicago-Gary-Lake County, IL-IN “Moderate” Ozone Nonattainment Area, Lake and Porter Counties, Indiana (June 2009) is provided on IDEM’s Ozone Attainment Demonstration page

Particulate Matter (PM)

1997 Annual Fine Particles (PM2.5) Standard

• Documents – February 1, 2013 to December 7, 2011 [ZIP]
  • Onroad Emissions MOBILE6.2 to MOVES MVEB Replacement Update to the Maintenance Plan for the Annual Fine Particles Standard for Lake and Porter Counties, Indiana (February 1, 2013)
  • Federal Register Notice Concerning U.S. EPA Approval of the Request for Redesignation and Maintenance Plan for Lake and Porter Counties to Attainment of the 1997 Annual Fine Particles Standard (December 7, 2011)
• Lake and Porter Counties Annual Fine Particles Request for Redesignation and Maintenance Plan Submittal (May 26, 2011) [ZIP]:
  • Transmittal Letter, Request for Redesignation and Maintenance Plan Including Appendices A-G
    • Appendix H
    • Appendices I-K
• IDEM Letter to U.S. EPA Concerning Clean Data Findings (August 14, 2009) [ZIP]
• Lake and Porter Counties Annual Fine Particles Redesignation Request and Maintenance Plan Submittal (April 3, 2008) [ZIP]
  • Transmittal Letter and Request for Redesignation and Maintenance Plan Including Appendices A-C2
    • Appendices D-G2
    • Appendices G3-G4
    • Appendix A1 Supplement-2007 AQS Monitoring Data

View redesignation and maintenance plans specific to Lake County