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State Supreme Court denies Sunoco’s appeal over permits for Mariner East 1 buildings in Lebanon County

The court upheld an earlier ruling that the buildings in West Cornwall Township should not be assumed exempt from typical construction permitting due to public utility status.

By Donna McDermott

Updated: March 2, 2020 | 1:18 pm

Sunoco to pay $200,000 fine, must increase oversight following investigation of aging Mariner East 1 pipeline

Public Utility Commission approves settlement, calls for 'remaining life' study
By Hannah Chinn/WHYY

Updated: December 3, 2019 | 4:30 pm

Chester County DA charges Energy Transfer security manager, others in scheme to use constables for Mariner East pipeline security

Those charged include employees from the international security firm TigerSwan.
By Susan Phillips

Activists urge Wolf, again, to shut down the Mariner pipelines

They’re pointing to sinkholes and contaminated wells they’ve seen throughout the building process, and say they’re worried about explosions.
By Katie Meyer

Updated: September 19, 2019 | 3:06 pm

Court ruling clears way for Mariner East construction to restart at West Whiteland

PUC will have to lift injunction that blocked work at Chester County site, lawyers say
By Jon Hurdle

PUC panel sees ‘statewide concern’ with pipeline corrosion after ME1 leak

Investigators propose a ‘remaining life study’ for ageing pipeline
By Jon Hurdle

Updated: October 16, 2018 | 12:56 pm

DEP awards water quality-related grants funded by $12.6M penalty against Sunoco

Money will go to efforts in 14 Pa. counties
By Scott Blanchard

Risk assessment quantifies Mariner East hazards for residents in two counties

The study says a pipeline “release” such as a small leak or a major rupture was likely to occur once every 79 years along a 35-mile stretch of pipeline such as that through Chester and Delaware counties.

By Jon Hurdle

Sunoco replaces section of Mariner East 2 because of flaws in pipeline coating

The company said the work in Delaware County is a preventative measure. An independent pipeline consultant said it’s ‘rare’ that a line is dug up and replaced like this.

By Jon Hurdle

Updated: July 20, 2018 | 1:48 pm

Sunoco: Exposed pipe in Uwchlan Township is inactive, not Mariner East 1

A township supervisor said Thursday that a township engineer had confirmed the line was part of Mariner East 1. But Sunoco said today that the line was taken out of service in 2015.

By Jon Hurdle
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