Supreme Court Limits EPA’s Authority to Regulate Carbon Emissions from Stationary Sources

Supreme Court Limits EPA’s Authority to Regulate Carbon Emissions from Stationary Sources

Since the Supreme Court’s 2007 decision in Massachusetts v. EPA, it has been clear that the U.S. Environmental Protection Agency (“EPA”) has the authority under the Clean Air Act (“CAA”) to regulate emissions of greenhouse gases (“GHGs”) from mobile sources because GHGs fall within the CAA’s definition of an “air pollutant.”

EPA Challenged to Issue Endangerment Finding and Rule Governing Greenhouse Gas Emissions from Aircraft Engines

EPA Challenged to Issue Endangerment Finding and Rule Governing Greenhouse Gas Emissions from Aircraft Engines

Two environmental organizations have again taken the United States Environmental Protection Agency (“EPA”) to task for failing in its mandatory duty to determine whether greenhouse gases from aircraft engines cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare (“Endangerment Finding”), and, if so, to propose and adopt standards to limit those emissions.  See Clean Air Act (“CAA”), 42 U.S.C. § 7571(a)(2)(A) (also referred to as “Section 231”).