WASHINGTON, Oct. 10 (TNSFR) -- The U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration is reviewing a request from Columbia Gas Transmission LLC (TCO), Houston, Texas, for an extension to a special permit segment. The agency has an active special permit that allows TCO to vary from federal pipeline safety regulations for specific sections of its gas transmission pipeline system. TCO submitted the request on Jan. 10, 2025, proposing to incorporate a special p more PR