The pipeline company said the request is due in part to opposition by some area residents to the parts of the work.
Gov. Rick Snyder signed legislation earlier this week creating a $21 million program to deepen Michigan harbors that could become impassable to boats as parts of the Great Lakes hover near historically low levels.
GOP state Senators want to use $30 million from the state’s rainy day fund to dredge Great Lakes harbors grappling with record-low water levels.
Gov. Rick Snyder will call for spending $11 million this year to dredge Michigan harbors in danger of losing their connections to open water because of low Great Lakes levels.