Federal appeals court: U.S. EPA regulation by letter is invalid

摘要

On March 25, the 8th U.S. Circuit Court of Appeals issued a significant legal decision (Iowa League of Cities v. EPA, 8th Cir., No. 11-3412) invalidating U.S. Environmental Protection Agency (EPA) efforts to limit mixing zones and regulate peak wet weather flow management techniques at publicly owned treatment works (POTWs) via letters instead of formal rulemaking.