Full Mariner East pipeline risk assessment report released | StateImpact Pennsylvania

Full Mariner East pipeline risk assessment report released

Quest Consultants studied 'hundreds of unique potential hazardous material release scenarios'

  • Scott Blanchard

In August, an engineer for Oklahoma-based Quest Consultants summarized findings from a risk assessment of the Mariner East pipelines at a public meeting in West Chester.

The engineer’s presentation included that a person has a one in 81,000 chance of dying if he or she is directly above a leak or explosion by all three of the Sunoco pipelines, and that such a person is much less likely to die from a Mariner East leak than he or she is from heart disease, but much more likely to do so than from a lightning strike.

Del-Chesco United for Pipeline Safety, using privately-raised money, commissioned the report on the pipeline project because of safety concerns related to the volatile natural gas liquids Sunoco will be moving from western Pennsylvania to an export terminal near Philadelphia.

Del-Chesco just released the entire analysis by Quest. The document is below. It includes details on how Quest arrived at its calculations and what data it used, as well as detailed risk assessments for three specific sites along the pipeline route: the Delaware-Chester County line, the Chester County Library, and Middletown’s Glenwood Elementary School.

To see an annotated guide to the document, click the four arrows at the bottom left.

Citizens Risk Assessment With Transmittal Letter (1) (Text)

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