The Federal Energy Regulatory Commission on Sept. 17 allowed the Atlantic Coast pipeline to resume construction activities, a month after suspending all work on the line due to a court decision that vacated two federal permits. In August, the U.S. Court of Appeals for the Fourth District ruled that the permits issued by the National Park Service for crossing the Blue Ridge Parkway and the Fish and Wildlife Service for protection of endangered species were invalid. Subsequently, the agencies revised their permits which led the commission to revoke the construction freeze. The $3-billion Mountain Valley project was also ordered to halt construction after a court threw out federal approvals. The Atlantic Coast pipeline, designed to extend from West Virginia to ship supplies into Virginia and North Carolina, is a joint proposal by Dominion Energy, Duke Energy, Piedmont Natural Gas, and Southern Company Gas. The Mountain Valley project, which will serve Mid- and South-Atlantic regions, is a joint venture of EQT Midstream Partners LP, NextEra US Gas Assets LLC, Con Edison Transmission Inc., WGL Midstream and RGC Midstream LLC.