TRAVERSE CITY, Mich. (AP) -- Michigan officials are questioning the safety of two pipelines that carry oil beneath the waterway linking Lakes Huron and Michigan.
Attorney General Bill Schuette and Department of Environmental Quality Director Dan Wyant sent a letter of concern Tuesday to Enbridge Inc., the Canadian company that owns the pipelines stretched across the bottom of the Straits of Mackinac.
The Associated Press obtained the letter ahead of its scheduled release.
It says that because of the pipelines' sensitive location, any failure could be catastrophic. It asks a lengthy series of questions and requests stacks of documentation about inspections and related topics.
Enbridge has said repeatedly the lines are safe, even though they were laid 61 years ago and haven't been replaced.