In decisions issued on July 27, two U.S. Courts of Appeal have ruled on challenges by opponents to pipelines designed to serve the east coast with important natural gas fuel supply. In City of Boston Delegation v. Federal Energy Regulatory Commission, the D.C. Circuit removed a hurdle to an Algonquin project to upgrade its pipeline system, finding the Commission had properly conducted its environmental review of the project under the National Environmental Policy Act (NEPA). By contrast, in Sierra Club v. U.S. Forest Service, which is one of several court proceedings related to the Mountain Valley Pipeline project, the Fourth Circuit held the Forest Service’s decision to amend the relevant resource management plan failed to comply with NEPA and the National Forest Management Act — and a Bureau of Land Management right-of-way decision did not comply with the Mineral Leasing Act. The court remanded the case back to the agencies for further proceedings.