Coal Plant Emissions Under Fire in Missouri Haze Rule Debate
Missouri's air quality regulators are hearing public testimony today on a revised haze reduction plan that critics say weakens earlier commitments. The state's Department of Natural Resources proposal would drop consent agreements at five coal-fired power plants, which environmental groups argue would allow more pollution that degrades visibility in national parks and wilderness areas. The EPA previously rejected parts of the state's 2022 plan, and the current draft faces a comment period through September 3.
The hearing, held at Burr Oak Woods Conservation Area in Blue Springs, allows virtual attendance alongside the in-person session. Missouri's Air Conservation Commission faces a decision on whether to accept the DNR proposal or require revisions addressing the EPA's partial disapproval of the 2022 plan, which remains unfinalized.
The five affected facilities include AECI's New Madrid and Thomas Hill plants, Ameren Missouri's Labadie plant, the Sikeston plant, and CU Springfield's John Twitty plant. The 2022 plan had identified consent agreements at these sites as necessary for maintaining reasonable progress toward natural visibility in protected areas, including Missouri's Hercules-Glades and Mingo Wilderness Areas, as well as downstream parks like Mammoth Cave and Great Smoky Mountains.
This dispute could shape how states balance industrial regulation against federal environmental mandates, potentially affecting air quality across multiple states. Visitors to national parks and wilderness areas may experience degraded scenic views if the weaker plan proceeds, while Missouri ratepayers could see different cost outcomes depending on whether pollution controls are required. The EPA's pending decision on the partial disapproval adds uncertainty, and the outcome may influence how other states approach their own haze compliance plans.