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29 Stories
A sign warns visitors to Marsh Creek Lake at the entrance of Marsh Creek Lake State Park in Chester County, Pa., where about 8,000 gallons of drilling mud spilled due to construction of the Mariner East pipeline.
October 7, 2020 | 6:43 PM

Whistleblower claims Mariner East construction lacks proper safety measures related to sinkholes, subsidence

In legal claim, professional geologist says Sunoco prevents proper inspections, edits reports on erosion
By Susan Phillips
August 28, 2017 | 2:31 PM

Shell, environmental groups reach deal on air monitoring for ethane cracker

By Marie Cusick
March 10, 2017 | 5:02 PM

DEP approved Mariner East 2 permits despite deficiencies, documents show

By Susan Phillips and Jon Hurdle
February 23, 2017 | 1:13 PM

Judge denies latest call to halt Mariner East 2 construction

By Jon Hurdle
February 14, 2017 | 2:42 PM

Mariner East 2 critics appeal new permits to Environmental Hearing Board

By Jon Hurdle
December 8, 2016 | 12:00 PM

Energy Hub vision challenged by Rinaldi's departure from PES

By Susan Phillips and Jon Hurdle
September 13, 2016 | 5:00 PM

Sunoco's Mariner East 2 pipeline could run through public land in Delco

By Jon Hurdle
August 17, 2016 | 7:50 PM

Air pollutants from Pa. oil and gas sites continue to rise

By Susan Phillips
August 11, 2016 | 11:28 AM

Mariner East 2 partisans clash at DEP public meeting in West Chester

By Jon Hurdle
June 30, 2016 | 9:00 AM

Trade union says more natural gas use would help state meet CPP goals

By Jon Hurdle
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