Enviro groups sue again to block Sunoco's Mariner East 2 pipeline

Three environmental groups sued Wednesday to block construction of Sunoco Pipeline LP’s Mariner East 2 pipeline, which state regulators allowed to resume on Feb. 8 after Sunoco agreed to pay a $12.6 million fine for permit violations.

Clean Air Council, the Delaware Riverkeeper Network, and Mountain Watershed Association filed an appeal with the Environmental Hearing Board of the Department of Environmental Protection’s Feb. 8 consent order. They also filed a separate breach of contract complaint in the Commonwealth Court, including a request for an injunction, for an alleged violation of an August settlement that the groups reached with Sunoco and state regulators.

Sunoco, which has fended off such suits in the past,  is building the pipeline system to carry Marcellus Shale natural gas liquids like propane across state to its export terminal in Marcus Hook. Construction has been plagued by complications including leaks of clay-like drilling fluids, some of which have fouled private water wells.

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