MAINE PUBLIC • April 16, 2021
State and federal regulators have approved a new disposal site for material to be dredged from Portland harbor. In a post on its website, the city says the Confined Aquatic Disposal Cell will be a deep hole dredged into the harbor floor to contain contaminated material removed from around piers and wharves. Once filled, the cell will be covered with a protective layer of sand. The clean material dredged to construct the cell would be disposed of in federal waters six miles off the coast of Cape Elizabeth. Sediment buildup in the harbor has eliminated up to 3,000 feet of commercial vessel berthing space.