WASHINGTON, Oct. 10 (TNSFR) -- The U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration is reviewing a special permit request from Portland Natural Gas Transmission System (PNGTS), Portsmouth, New Hampshire, to expand its natural gas pipeline operations in Cumberland County, Maine. The request, submitted on March 27, 2024, seeks to add a 2,625-foot segment to the existing permit, while a second request on April 16, 2024, proposes extending an active segment b  more