On September 30, the U.S. Environmental Protection Agency (EPA) issued a proposal describing how it intends to regulate greenhouse gas (GHG) emissions under the Clean Air Act’s (CAA) Title V and Prevention of Significant Deterioration (PSD) permitting programs. EPA’s proposal, if adopted, would establish specially tailored emission thresholds for the application of the Title V and PSD programs to sources that emit GHGs. EPA estimates that the proposed thresholds would apply to sources with nearly 70% of the national GHG emissions from stationary sources and result in GHG-related permit requirements for approximately 14,000 facilities, including approximately 3,000 sources that previously have not been subject to the Title V program. Read more…