Liquid Waste Technology LLC (LWT LLC)

Workgroup presents updates on Sheboygan River dredging case study


Courtesy of Courtesy of Liquid Waste Technology LLC (LWT LLC)

The Environmental Protection Agency (EPA) declared the lower 14 mile section of the Sheboygan River a hazardous waste site under the EPA Superfund legislation in 1986. A Sheboygan River Dredging Workgroup was established in August of 2009 to assist in coordinating these projects, and is represented by officials from the EPA Region 5, Great Lakes National Program Office (GLNPO), Wisconsin Department of Natural Resources (DNR), United States Army Corps of Engineers, City of Sheboygan, Sheboygan County, Wisconsin Public Service Corporation, Pollution Risk Services (PRS), and Tecumseh Corporation.

The dredging projects are part of a multi-phase cleanup project located in the Sheboygan River Area of Concern (AOC), and are coordinated by the Great Lakes Program Office of the EPA. They include:

2006/2007 Superfund Upper River Tecumseh Dredging Project – completed. Approximately 20,728 cubic yards of contaminated polychlorinated biphenyl (PCB) sediment was removed at a cost of $20 million by Tecumseh Corporation and PRS. This Upper River project began in the City of Sheboygan Falls and extended to the Village of Kohler.

Lower River Superfund Dredging Project – currently underway. Approximately 53,000 cubic yards of contaminated PCB sediment will be removed at a projected cost of $12.5 to $15 million, paid by Tecumseh. Tecumseh and PRS are considered the Principal Responsible Parties. PRS is the contractor performing the dredging work. The Lower River project area is between the Chicago & Northwestern railroad bridge and the Pennsylvania Street Bridge in the City of Sheboygan.

Camp Marina Superfund Dredging Project – completed in 2011. Approximately 28,500 cubic yards of polynuclear aromatic hydrocarbon (PAH is a suspected human carcinogen) contaminated sediment will be removed at an estimated cost of $9 million to $10.5 million, and will be paid by Wisconsin Public Service, the Principal Responsible Party. This project is located within the Superfund Lower River section in the City of Sheboygan adjacent to Boat Island.

The Legacy Act Dredging Project Feasibility Study & Design -currently under way, costing $1,142,857. The project will lead to additional dredging in the Lower River project area.

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