Mealey's (April 23, 2018, 12:09 PM EDT) -- RICHMOND, Va. — The Sierra Club Inc. and other environmental advocacy groups on April 18 filed a brief in the Fourth Circuit U.S. Court of Appeals contending that government agencies have not “implicitly considered” the impact a pipeline to carry natural gas from hydraulic fracturing operations in the Marcellus and Utica shale formations would have on the Jefferson National Forest (Sierra Club Inc., et al. v. United States Forest Service, et al., No. 17-2399, 4th Cir.)....