Energy & environment · 24/09/2010Updated: 10/17/2026 · 1 min read

EPA Approves Michigan's Redesignation of Allegan County Area for Ozone Attainment

The Environmental Protection Agency (EPA) has approved Michigan's request to redesignate the Allegan County area to attainment for the 1997 8-hour ozone standard, meeting the Clean Air Act requirements. This approval is based on three years of air quality monitoring data showing the area has met the ozone standard, and a state plan to maintain it through 2021.