Graham Sustainability Institute

Mackinac Straits Line 5 Worst Case Oil Spill Scenarios

November 2020

UPDATE

From Michigan EGLE: Governor Whitmer Takes Action to Shut Down the Line 5 Dual Pipelines through the Straits of Mackinac After a Reasonable Transition Period to Protect the State's Energy Needs

PI David Schwab in the Detroit News: "This action is based on sound scientific evidence that the continued operation of the pipelines poses an unacceptable level of risk to the health and safety of residents of Michigan."

Read Whitmer moves to shut down Enbridge's Line 5


March 2016

In the most comprehensive study of Line 5 oil spill impacts publicly available, Dave Schwab presents three potential levels of oil discharge, measured in barrels (bbl), each containing 42 US gallons of oil, including 5,000 bbl, 10,000 bbl and 25,000 bbl in the report. Schwab simulated 840 hypothetical spill cases.