Denise McCarthy told a Department of Environmental Protection hearing that the Mariner East pipelines would endanger her grand nephew, Jack, whose picture she held up as she spoke. DEP held the public meeting in May to hear comment on Sunoco's proposed permit modifications in West Whiteland Township, Chester County.
Full Mariner East pipeline risk assessment report released
Quest Consultants studied 'hundreds of unique potential hazardous material release scenarios'
Scott Blanchard is editor of StateImpact Pennsylvania, an award-winning public media collaboration among WITF, WHYY in Philadelphia and The Allegheny Front in Pittsburgh that covers the state’s energy economy.
Before joining StateImpact in 2017, Blanchard was enterprise editor at the York (Pa.) Daily Record, where he led the newsroom’s investigative and projects reporting. He was a 2013 Ochberg Fellow, receiving training at Columbia University in PTSD science, self-help and peer support. He is a past president of the Pennsylvania Society of News Editors. A Rockville, Md., native, he is a graduate of the University of Missouri’s journalism school.
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.