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Minnesota Sea Grant Helps Sustain Commercial Operations in Major Great Lakes Port

Minnesota and Wisconsin Sea Grant programs developed innovative ways to recycle and reuse dredge material. Photo credit: Chris J. Benson

Over 100,000 cubic yards of dredge material are moved each year within the Duluth-Superior Harbor to maintain commercial operations in the Great Lakes. The Duluth-Superior Contained Disposal Facility (CDF) is currently at capacity and a new facility would cost over $35 million.

Minnesota Sea Grant, in conjunction with Wisconsin Sea Grant and the Harbor Technical Advisory Committee, developed a strategy to partner with state agencies responsible for permitting and using dredge materials. Efforts to re-use clean dredge material in other projects around the state have eliminated the need for a new CDF and saves the state and private port interests millions of dollars.

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