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IDEM > Monitoring > Air Monitoring > Attainment and Redesignations > Ozone and Fine Particle Attainment Demonstrations Ozone and Fine Particle Attainment Demonstrations

This Web site is dedicated to Indiana's Ozone and Fine Particle Attainment Demonstrations for counties that meet the National Ambient Air Quality Standards (NAAQS). The Indiana Department of Environmental Management (IDEM) has prepared these ozone and fine particle attainment demonstrations for U.S. Environmental Protection Agency (U.S. EPA) review and consideration for these counties to be redesignated from nonattainment to attainment, and classified as maintenance under the standards. The list is broken down by nonattainment area and provides additional information to support continued compliance with the standard(s).

Central Indiana

Annual Fine Particles

Jefferson County (Madison Township) and Clark and Floyd Counties

Annual Fine Particles

Dearborn County

8-Hour Ozone

Annual Fine Particles

Lake and Porter Counties

8-Hour Ozone

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