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.
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.
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.
The state’s Public Utility Commission said people are not in “imminent danger” from the exposed pipe. But a township supervisor said she’s concerned and wants the situation treated with urgency.
Mapping data and Sunoco’s statements point to a 12-inch pipeline that would allow the company to fulfill customers’ orders for natural gas liquids while construction of the long-delayed Mariner East 2 pipeline is being completed.
The Delaware River Basin Commission said many Sunoco incidents are outside its jurisdiction, and have already been penalized by Pennsylvania authorities. But, the commission said, it’s tracking possible violations of its permit conditions.
Delaware Riverkeeper Network says “severe and ongoing” permit violations are causing “significant harm” to the river basin. It wants the commission to suspend Mariner East 2 construction.