Regulation & law · 10/12/2014Updated: 10/17/2026 · 1 min read

EPA Disapproves Indiana's Ozone Redesignation Request for Lake and Porter Counties

The Environmental Protection Agency (EPA) has disapproved Indiana's request to redesignate Lake and Porter Counties to meet the 2008 eight-hour ozone standard due to the counties' failure to demonstrate attainment in the Chicago-Naperville, Illinois-Indiana-Wisconsin ozone nonattainment area. The EPA has also rejected Indiana's ozone maintenance plan and Motor Vehicle Emission Budgets for VOC and NOx.