Wednesday, April 18, 2018

Sunoco proposes changes to Mariner East 2 construction

Mariner East 2 pipe being installed in 2017 in Washington County, Pa.
Jon Hurdle reports for StateImpact:

Pennsylvania’s Department of Environmental Protection will hold a public hearing on plans by Sunoco Pipeline to modify its construction of the controversial Mariner East pipelines at two sites in Chester County’s West Whiteland Township.

The DEP said Monday that Sunoco proposes to change its construction method for the pipelines from horizontal directional drilling (HDD) to a conventional bore at one site and from HDD to a combination of conventional bore, open trench and HDD at the other sit

The changes would mean “major modifications” to the company’s permits under the DEP’s Chapter 105 water obstruction and Chapter 102 erosion control regulations, and so require DEP approval after a public hearing, the department said in a statement.

The meeting will be held on April 30 from 6:30 pm to 9:30 pm at the EN Peirce Middle School in West Chester. The DEP also extended a public-comment period from April 21 until May 11.

The statement said one of the affected sites is on East Swedesford Road, where the local water utility, Aqua America, has raised concerns about a well at Hillside Drive. The other location is along North Pottstown Pike, where the new work plan has been prompted by hydrogeological analysis and seismic testing, DEP said. Sunoco submitted both plans last October.

The sites are among about 60 along the cross-state pipeline route that have been subject to a court-ordered “re-evaluation” of local geology after a string of drilling-fluid spills.

Sunoco sought the change “to ensure Aqua America’s water supply would not be impacted,” spokesperson Lisa Dillinger wrote in an email. The change would allow construction to continue “in the most efficient manner possible while keeping safety as our first priority

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