In Sixth Circuit Rejects Clean Air Act Preemption of State Common Law Claims: Four Things to Know, Pillsbury attorneys Matt Morrison and Bryan Stockton explore the Six Circuit Court of Appeals recent rejection of Clean Air Act, 42 U.S.C. §§ 7401 et seq. (CAA), preemption of state common law claims in Merrick, et al. v. Diageo Americas Supply, Inc. and Little et al. v. Louisville Gas & Electric Company; PPL Corporation. The takeaway is that a facility that is otherwise in compliance with CAA emission requirements can still face lawsuits by neighboring landowners for traditional torts such as nuisance and trespass. Merrick and Little add to the foundation of precedent across the Second, Third, and Sixth Circuits, and Iowa Supreme Court.