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Contract Awarded to Dredge Polluted Lake Superior Harbor

This aerial photo shows the stamp sands deposited along the coast north of the Grand Traverse Harbor and the natural beaches that lie to the south. This aerial photo shows the stamp sands deposited along the coast north of the Grand Traverse Harbor and the natural beaches that lie to the south. |  Photo: Courtesy of Neil Harri via Michigan DNR

Created: September 10, 2018 10:18 AM

DETROIT (AP) - Federal officials have awarded a contract to remove copper mine waste from a Lake Superior harbor, where it threatens to damage crucial fish spawning habitat more than a century after companies dumped it into the water.

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The U.S. Army Corps of Engineers says Petersen Companies Inc. of Minocqua, Wisconsin, will dredge about 27,500 cubic yards of material known as "stamp sands" from in and around Grand Traverse Harbor.

The company also will dredge 80,000 cubic yards of the waste from the ancient riverbed area north of Buffalo Reef.

The affected area is in the far northwestern corner of Michigan's Upper Peninsula.

Officials say the dredging will buy time to develop a long-term plan for dealing with an estimated 15 million cubic yards of stamp sands that endanger the reef.

Copyright 2018 The Associated Press. All rights reserved.

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