Documents indicate Sunoco has a new maximum operating pressure for the line, which is under construction. An engineer who conducted a risk assessment of the Mariner East project said a higher pressure increases risk.
State attorney general, Delaware County district attorney launch criminal investigation into Sunoco, Energy Transfer
Chester County’s district attorney is already investigating the Mariner East pipeline project. The company said it will “aggressively” defend itself.
The cross-state natural gas liquids pipeline Mariner East 2 was supposed to begin operation by the end of September. Now, the company has come up with a workaround after acknowledging another lengthy delay in its pipeline project.