Steven M. Falk / Philadelphia Inquirer

Winding through green forested hills, the road to Meadowbrook Mobile Home Park in York County is nestled with brown-paneled trailers and potholes half-filled with jagged concrete.

Kimberly Paynter / WHYY

A professional geologist who worked on the Mariner East pipeline project says pipeline builder Sunoco/Energy Transfer prevented him and other geologists from inspecting and reporting on dangerous subsidence, or sinkholes, during construction.

PA Utility Regulator Says Sunoco Must Do More To Share Safety Information On Pipeline Project

Sep 25, 2020
Jon Hurdle / StateImpact Pennsylvania

Pennsylvania’s utility regulator is siding with a Cumberland County man in his complaint against Sunoco’s Mariner East pipeline.

Judges Say DEP Unlawfully Issued Air-Quality Permits To Sunoco At Marcus Hook

Jan 10, 2019
Matt Slocus / AP

A Pennsylvania court said the Department of Environmental Protection unlawfully issued air-quality permits to Sunoco for its natural gas liquids plant at Marcus Hook in Delaware County, and it ordered the department to re-do its analysis over whether the plant should be subject to two sets of emissions rules.

Prosecutor Begins Investigating Mariner East Pipeline Work

Dec 19, 2018
Jon Hurdle / StateImpact Pennsylvania

A county prosecutor in Pennsylvania is opening a criminal investigation into construction on three natural gas liquids pipelines that have drawn blame for causing sinkholes and polluting drinking water and waterways.

Pipeline Ruptures Bring New Scrutiny To Pennsylvania Geology

Oct 28, 2018
Katie Blackley / 90.5 WESA

The only earth movement that Jeff and Michelle Seaman have noticed is the large gash dug by excavators and pipeliners in their backyard 50 feet from the pool where Ms. Seaman likes to float.

Judge Shuts Down Work On Sunoco Pipelines, Cites Danger

May 24, 2018
Matt Slocum / AP

An administrative law judge has shut down work on a natural gas liquids pipeline in the Philadelphia suburbs, saying Sunoco has failed to take reasonable steps to warn people and protect them from danger.

Jon Hurdle / StateImpact Pennsylvania

More than a month after the Mariner East 1 pipeline was shut down over safety concerns, representatives for Sunoco say they’ve found no problems, and that they’re looking forward to getting the natural gas liquids pipeline running again.

But state officials say they’re not making any decisions to put the Mariner East 1 back in service yet.

Problems with the pipeline began late last year when a rash of sinkholes began opening up nearby. In early March, the state Public Utility Commission ordered that it be shut down.

Marie Cusick / StateImpact Pennsylvania

Pennsylvania regulators are fining Sunoco more than $12 million for problems with a massive natural gas pipeline project, but letting work resume under a consent agreement.

The Department of Environmental Protection said Thursday that Sunoco Pipeline has made changes since work on the $2.5 billion Mariner East 2 pipeline was halted Jan. 3.

The 350-mile project has been plagued by spills and leaks of drilling fluid and improper construction methods.

Pennsylvania Shuts Down Construction On Sunoco Gas Pipeline

Jan 3, 2018
Matt Slocum / AP

Pennsylvania environmental officials ordered Sunoco on Wednesday to halt construction of a natural gas pipeline across the southern part of the state, citing a series of spills and leaks of drilling fluid and other "egregious and willful violations" of state law that have plagued the $2.5 billion project.

Marie Cusick / StateImpact Pennsylvania

The sounds of buzzing chainsaws echoed through the hills around Raystown Lake on Thursday afternoon as contractors for Sunoco Logistics cleared trees to make way for the new Mariner East 2 project.

The 8,300-acre lake in Huntingdon County is a popular spot for swimming, boating, hiking and mountain biking. It draws about 1.5 million visitors annually.