As I have reported previously, the US Court of Appeals for the DC Circuit issued a significant decision in September 2019 on EPA’s implementation of the so-called “Good Neighbor Provision” of the federal Clean Air Act (CAA). That is the CAA’s principal provision addressing what is often termed “interstate transport,” the physical process in which emissions from cars, trucks, factories, power plants, and myriad other sources—and the resulting air pollution—are carried by prevailing winds across state borders. The main purpose of the Good Neighbor Provision (section 110(a)(2)(D)(i)(I) of the CAA) is to prevent “significant contribution” by “upwind” states’ emissions to violations of national ambient air quality standards (NAAQS) in “downwind” states. Although states have the principal responsibility to implement this provision, EPA periodically has invoked its CAA authority to impose requirements to curb interstate transport when it determines upwind states have not adopted adequate controls.

Continue Reading Against a Backdrop of Litigation, EPA Prepares a New Rule to Address Interstate Air Pollution

On July 9, President Trump announced Judge Brett Kavanaugh of the Court of Appeals for the DC Circuit as his nominee to replace retiring Justice Anthony Kennedy on the Supreme Court. Kavanaugh has developed an extensive history of jurisprudence during his twelve-year tenure on the DC Circuit. And, given the DC Circuit’s heavy administrative law caseload, Kavanaugh has authored numerous opinions involving environmental law. The upcoming confirmation process is sure to include a focus on Kavanaugh’s robust environmental and administrative law record and what it might portend for the future.
Continue Reading From Judge to Justice: What Brett Kavanaugh’s Supreme Court Nomination Could Mean for Environmental Jurisprudence

On May 18, the DC Circuit vacated a decision by EPA to place an Indianapolis site on the National Priorities List because the agency had ignored evidence contradicting facts underlying its listing decision. Although it is rare for a court to overturn an NPL listing, the case is a reminder that an administrative rulemaking must be based on substantial evidence, even when the agency has substantial discretion to evaluate the factual record.
Continue Reading Genuine Surprise: DC Circuit Overturns NPL Listing Decision