On October 14, 2015, FERC issued an order ("October 14
Order") denying rehearing and stay of its December 18, 2014
order ("December 18 Order") authorizing Columbia Gas
Transmission, LLC ("Columbia") to construct and operate
its East Side Expansion Project and abandon facilities that will be
replaced as part of the project. In the October 14 Order,
FERC found that it had fully addressed environmental issues raised
by the Clean Air Council and the Allegheny Defense Project
("Allegheny") in its environmental assessment
("EA") and the December 18 Order.
Columbia proposed to construct and operate the East Side
Expansion Project to increase firm transportation service on the
Columbia system by 312,000 dekatherms to serve the mid-Atlantic and
northeast markets. The project would involve looping existing
pipelines; replacing compressors at the Milford and Easton
Compressor Stations; and installing various measurement, station
piping, valves, and appurtenant facilities at
