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.
StateImpact Pennsylvania, Newsworks.org, WHYY and NJ Spotlight are collaborating on a series of stories about the Delaware River Watershed.
The watershed stretches from upstate New York through Pennsylvania and New Jersey, emptying out in the Delaware Bay. It supplies water to more than 15 million people, or about 5% of the nation’s population. Its natural lands both protect clean water and provide a habitat of regional and hemispheric importance.
The story of the river includes stories of its people and wildlife that depend on it for survival; the threats to continued sources of clean water; and the river as an economic engine.
The project is funded by The William Penn Foundation. Below are contributions from StateImpact Pennsylvania.
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 company vowed not to make those mistakes again. But critics of the project in southeastern Pennsylvania said it’s too late for the people who are living near the pipelines.
Drilling on shaky ground: Why Chester County’s DA is investigating the Mariner East pipeline project
StateImpact Pennsylvania reporter Susan Phillips discusses the Mariner East project’s problems, and how a pipeline explosion in western Pennsylvania led District Attorney Tom Hogan to take a hard look at a pipeline in his own backyard.
PA DEP halts new pipeline permits for Mariner East, cites ongoing violations with Revolution pipeline
The DEP says Energy Transfer, which is the parent company of Sunoco, failed to fix problems after an explosion rocked Beaver County in September.