Prevention of Significant Deterioration

The 19th Judicial District Court in Baton Rouge, Louisiana issued a decision on September 14, 2022, vacating a proposed industrial facility’s permit issued by the Louisiana Department of Environmental Quality (“LDEQ”) and finding that LDEQ violated the federal Clean Air Act and its duty under the Public Trust Doctrine.[1] Although the decision concerns

On September 30, 2019, the United States District Court for the Eastern District of Missouri, Eastern Division, issued an Opinion and Order setting forth the remedy required for Ameren Missouri’s violation of the Clean Air Act’s Prevention of Significant Deterioration (“PSD”) program. United States v. Ameren Missouri, No. 4:11-CV-77, Rec. Doc. 1122 (E.D. Mo.