550 gallons of coolant leak into Straits of Mackinac

LANSING – A leak this week of hundreds of gallons of coolant from submerged cables in the Straits of Mackinac was heightening concerns Wednesday about aging pipelines carrying large volumes of oil through the environmentally sensitive area.

“It’s just another indication of the danger of having aging infrastructure in the Straits and what risk that poses to the Great Lakes,” said James Clift, policy director for the Lansing-based Michigan Environmental Council.

Submerged cables that carried electricity between Michigan’s two peninsulas were shut down after leaking about 550 gallons of coolant fluid into the waterway that connects Lake Huron and Lake Michigan, officials said Tuesday.