In December 2017, the Federal Energy Regulatory Commission (FERC) issued a final approval for the Mountaineer XPress pipeline project (see Leach XPress Goes Online; FERC Approves Mountaineer & Gulf XPress). The $2 billion project is ~170 miles of new pipeline meant to flow 2.7 billion cubic feet (Bcf) per day of natural gas from existing and future points of receipt along or near the Columbia pipeline system–most of it located in West Virginia (see Details on Columbia Pipeline Mountaineer XPress Pipeline Project). At 2.7 Bcf/d, Mountaineer XPress is the second largest (by volume) new pipeline project for the Marcellus/Utica region–second only to Rover’s 3.25 Bcf/d pipeline. It is a big and important project. Last week Columbia, the builder, asked FERC for permission to start up 119 miles out of the 170-mile project, by Dec. 31.