Mariner East 1 pipeline goes back into service

Construction for the Sunoco Mariner East pipeline.
Photo credit Jeremy Long/Lebanon Daily News via USA Today Network
PHILADELPHIA (KYW Newsradio) — The Mariner East 1 pipeline is going back into service Monday afternoon.

The Pennsylvania Public Utility Commission received notice last Friday that Energy Transfer Partners, Sunoco's parent company, will restart ME1.

Sunoco is required to take additional steps to address safety concerns surrounding the project, especially along Lisa Drive in West Whiteland Township, Chester County.

ME1 has been out of service since Jan. 20 while engineers from the PUC's Bureau of Investigation and Enforcement checked for stabilization. Sinkholes had developed along Lisa Drive, exposing the pipeline below. The project also caused water contamination and other issues. 

Energy Transfer will be required to walk the section of ME 1 on Lisa Drive every day until grouting of the line is complete. The company is also required to perform geophysical tests, conduct remote monitoring of the line along Lisa Drive and report the findings to the PUC.