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Michigan officials require added supports beneath oil pipes at lakes

Enbridge Energy Partners LP placed on notice following the company’s acknowledgement it was partly out of compliance with an agreement dating to 1953
Oklahoman Published: July 25, 2014
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— Two oil pipelines at the bottom the waterway linking Lakes Huron and Michigan will get additional support structures to help prevent potentially devastating spills, officials said Thursday.

Michigan Attorney General Bill Schuette and Dan Wyant, director of the Department of Environmental Quality, said they had put Enbridge Energy Partners LP on notice following the company’s acknowledgement it was partly out of compliance with an agreement dating to 1953, when the pipelines were laid in the Straits of Mackinac.

As a condition of an easement granted by the state, Enbridge agreed that support anchors would be placed at least every 75 feet. In a response last month to a lengthy series of questions about the condition of the lines from Schuette and Wyant, the Canadian company acknowledged some sections don’t meet the requirement, although the average distance between supports is 54 feet.

Enbridge spokeswoman Terri Larson said the company had agreed to add more supports, even though engineering analyses peer-reviewed by experts at Columbia University and the University of Michigan concluded previously that gaps of up to 140 feet between supports would be safe. The work will begin in early August and be completed within 90 days, she said. Afterward, the average distance between supports will be 50 feet.

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