( October 30, 2024, 10:36 AM EDT) -- CINCINNATI — Two environmental groups are asking the Sixth Circuit U.S. Court of Appeals to vacate a Clean Water Act (CWA) permit that the Army Corps of Engineers granted for construction of a Tennessee natural gas pipeline, stating the agency’s attempts to assume the practicability of trenchless crossings, select the least environmentally damaging construction method and determine whether the project would contribute to water quality standards violations, among other tasks, were arbitrary, capricious and unlawful....