Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Air Quality Implementation Plans

EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Indiana SIP

Title Indiana date EPA approval Explanation
Allen County 1997 8-hour ozone maintenance plan   2/25/2014,79 FR 10385 Revision to motor vehicle emission budgets.
Carbon Monoxide Control Strategy - Lake and Porter Co   1/19/2000,65 FR 2883 Paragraph (b).
Carbon Monoxide Control Strategy - Lake and Marion Cos 1 1/12/2009 10/15/2009,74 FR 52891 Paragraph (c).
Chicago Hydrocarbon Control Strategy   8/26/2004,69 FR 52427 Paragraph (aa).
Chicago-Gary Hydrocarbon Control Strategy   12/30/2008,73 FR 79652 Paragraph (kk).
Ozone (8-Hour, 1997): Cincinnati-Hamilton, OH-KY-IN (Dearborn County (part)) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Control Strategy: Particulate Matter   11/27/2009,74 FR 62243 Paragraph (s).
Ozone (8-Hour, 1997): Evansville, IN (Vanderburgh and Warrick Counties) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Evansville/Southwest Indiana Area 1997 annual fine particulate matter maintenance plan   3/19/2014,79 FR 15224 Revision to motor vehicle emission budgets.
Fluoride Emission Limitations for Existing Primary Aluminum Plants   3/11/2003,68 FR 11472 Removed from SIP, replaced by NESHAP.
Ozone (8-Hour, 1997): Fort Wayne, IN (Allen County) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Ozone (8-Hour, 1997): Jackson Co., IN (Jackson County) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Ozone (8-Hour, 1997): Greene Co., IN (Greene County) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Ozone (8-Hour, 1997): Indianapolis, IN (Boone, Hamilton, Hancock, Hendricks, Johnson, Madison, Marion, Morgan, and Shelby Counties) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Indianapolis 2010 Sulfur Dioxide (SO2) Attainment Plan 10/2/2015 3/22/2019,84 FR 10692  
Indianapolis 2010 Sulfur Dioxide (SO2) maintenance plan 7/10/2017 5/21/2020,85 FR 30844  
Lake County sulfur dioxide maintenance plan 3/28/2013 9/3/2013,78 FR 54173  
Ozone (8-Hour, 1997): Chicago-Gary-Lake County, IL-IN (Lake and Porter Counties) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Lake and Porter Counties 1997 annual PM2.5 maintenance plan 2/1/2013 5/15/2013,78 FR 28503 Revision to motor vehicle emission budgets.
Lake and Porter Counties 2008 8-hour Ozone Moderate Planning Elements 2/28/2017, 1/9/2018, and 10/25/2018 12/13/2019,84 FR 68050 2011 base year emissions inventory, Reasonable Further Progress (RFP) plan, RFP contingency measure plan, 2017 VOC and NOX motor vehicle emissions budgets, nonattainment new source review certification, VOC RACT Certification, and enhanced motor vehicle inspection and maintenance program certification.
Lake and Porter Counties 2008 8-hour Ozone Negative Declarations 10/25/2018 12/13/2019,84 FR 68050 Includes: Fiberglass Boat Manufacturing Materials CTG and Oil and Gas Industry CTG.
Ozone (8-Hour, 1997): LaPorte CO., IN (LaPorte County) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Lead Control Strategy - Marion County   5/10/2000,65 FR 29959 Paragraph (d).
Lead Control Strategy - Marion County 1 4/1/2009 9/24/2009,74 FR 48659 Paragraph (e).
Louisville 1997 Annual PM2.5 Maintenance Plan 6/16/2011 9/9/2016,81 FR 62390  
Ozone (8-Hour, 1997): Louisville, KY-IN (Clark and Floyd Counties) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Morgan County 2010 Sulfur Dioxide (SO2) Attainment Plan 10/2/2015 9/23/2019,84 FR 49659  
Morgan County 2010 Sulfur Dioxide (SO2) Maintenance Plan 10/10/2019, 5/5/2020 9/16/2020,85 FR 57736  
Ozone (8-Hour, 1997): Muncie, IN (Delaware County) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Muncie 2008 lead emissions inventory 4/14/2016 5/15/2020,85 FR 29331  
Muncie 2008 lead maintenance plan 4/14/2016 5/15/2020,85 FR 29331  
Ozone Monitoring Season 2/19/1991 12/10/1991,56 FR 64482.  
PM10 Maintenance Plan for Lake County 9/25/2002 1/10/2003,68 FR 1370 Paragraph (r), also redesignation.
Particulate Control Strategy - Vermillion County   8/26/1997,62 FR 45168 Paragraph (q).
Regional Haze Five-Year Progress Report 3/30/2016 2/2/2018,83 FR 4847  
Regional Haze Plan 11/27/2017 9/6/2019,84 FR 46889 Full Approval.
Section 110(a)(2) infrastructure requirements for the 1997 8-Hour Ozone NAAQS 12/7/2007, 9/19/2008, 3/23/2011, 4/7/2011, and 11/24/2017 12/17/2018,83 FR 64472 All CAA infrastructure elements have been approved except the visibility portion of 110(a)(2)(D)(i)(II).
Section 110(a)(2) infrastructure requirements for the 1997 PM2.5 NAAQS 12/7/2007, 9/19/2008, 3/23/2011, 4/7/2011, and 11/24/2017 12/17/2018,83 FR 64472 All CAA infrastructure elements have been approved except the visibility portion of 110(a)(2)(D)(i)(II).
Section 110(a)(2) Infrastructure Requirements for the 2006 24-Hour PM2.5 NAAQS 10/20/2009, 6/25/2012, 7/12/2012, 5/22/2013, and 11/27/2017 9/6/2019,84 FR 46889 Full Approval.
Section 110(a)(2) Infrastructure Requirements for the 2008 Lead NAAQS 12/12/2011 10/16/2014,79 FR 62035 This action addresses the following CAA elements: 110(a)(2)(A), (B), (C), (D)(i)(I), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2008 8-Hour Ozone NAAQS 12/12/2011 and 11/27/2017 9/6/2019,84 FR 46889 Full Approval.
Section 110(a)(2) Infrastructure Requirements for the 2010 NO2 NAAQS 1/15/2013 and 11/27/2017 9/6/2019,84 FR 46889 Full Approval.
Section 110(a)(2) Infrastructure Requirements for the 2010 SO2 NAAQS 5/22/2013 and 11/27/2017 9/6/2019,84 FR 46889 All elements have been addressed except: 110(a)(2)(D)(i)(I).
Section 110(a)(2) infrastructure requirements for the 2012 PM2.5 NAAQS 6/10/2016 and 12/28/2016 10/8/2019,84 FR 53601 Fully approved for all CAA elements except the visibility protection requirements of (D)(i)(II).
Small Business Compliance Assistance Program   9/2/1993,58 FR 46541.  
Ozone (8-Hour, 1997): South Bend-Elkhart, IN (Elkhart and St. Joseph Counties) 6/20/2019 12/13/2019,84 FR 68049 2nd maintenance plan.
Southwest Indiana 2010 Sulfur Dioxide (SO2) Attainment Plan 10/2/2015 8/17/2020,85 FR 49967  
Southwest Indiana Sulfur Dioxide (SO2) Maintenance Plan 10/24/2018, 8/25/2020 3/2/2021,86 FR 12107  
Sulfur Dioxide Control Strategy - LaPorte, Marion, Vigo, and Wayne Counties   11/15/1996,61 FR 58482 Paragraph (f) and (g).
Ozone (8-Hour, 1997): Terre Haute, IN (Vigo County) 6/20/2019 12/27/2019,84 FR 71306 2nd limited maintenance plan.
Terre Haute 2010 Sulfur Dioxide (SO2) Attainment Plan 10/2/2015 3/22/2019,84 FR 10692  
Terre Haute 2010 Sulfur Dioxide (SO2) maintenance plan   7/8/2019,84 FR 32317  
Vanderburgh and Warrick Counties 1997 8-hour ozone maintenance plan   2/25/2014,79 FR 10385 Revision to motor vehicle emission budgets.
Vigo County 1997 8-hour ozone maintenance plan   2/25/2014,79 FR 10385 Revision to motor vehicle emission budgets.

Air Quality Implementation Plans

  • About Air Quality Implementation Plans
  • Approved Air Quality Implementation Plans
  • Develop an Air Quality SIP
  • Find a Regional Contact for Air Quality SIPs/FIPS/TIPs
  • Tools for SIP Status
Contact Us about Air Quality Implementation Plans
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 6, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.