FERC has approved Enbridge’s request to proceed with construction in Marshall County, West Virginia for the Marshall County Mine Panel 17W Project.
The Marshall County Mine Panel 17W Project includes the excavation and elevation of sections of Enbridge’s lines 10 (30-inch-diameter), 15 (30-inch-diameter), 25 (36-inch-diameter) and 30 (36-inch-diameter) to minimize and monitor potential strains on the pipelines due to anticipated longwall mining activities of Marshall Coal.
Concurrent with pipeline elevation, portions of Lines 10 and 15 will be replaced with new pipe to accommodate a minimum US Department of Transportation Class 2 design, while sections of Lines 25 and 30 will be removed and Enbridge will perform maintenance activities on them. The four mainline sections will be returned to service while remaining elevated using sandbags and skids during the longwall mining activities and potential ground subsidence. Once the mining-induced subsidence and the 2017-2018 heating season have both finished, the two sections of Lines 10 and 15 located within wetlands will be removed and the four elevated pipeline sections will be re-installed belowground, hydrostatically tested, and placed back into service.