Following are links to Requests for Redesignation and Maintenance Plans for affected areas/counties, listed by common (criteria) pollutant:
- Carbon Monoxide (CO):
- Lead (Pb):
- Nitrogen Dioxide (NO2)
- None at this time
- Ozone (O3):
- Central Indiana O3 (Boone, Hamilton, Hancock, Hendricks, Johnson, Madison, Marion, Morgan, and Shelby Counties)
- Evansville, Indiana Area O3 (Vanderburgh and Warrick Counties)
- Allen County O3
- Clark and Floyd Counties O3
- Dearborn County O3
- Delaware County O3
- Greene County O3
- Jackson County O3
- Lake and Porter Counties O3
- LaPorte County O3
- St. Joseph and Elkhart Counties O3
- Vigo County O3
- Particulate Matter (PM):
- Central Indiana PM (Hamilton, Hendricks, Johnson, Marion, and Morgan Counties)
- Evansville, Indiana Area PM (Dubois, Vanderburgh, and Warrick Counties, and portions of Gibson, Spencer, and Pike Counties)
- Clark, Floyd, and Jefferson Counties PM
- Dearborn County PM
- Lake and Porter Counties PM
- Sulfur Dioxide (SO2):