Background

The Sheboygan Harbor and River site includes the lower 14 miles of the river from the Sheboygan Falls Dam downstream to, and including, the inner harbor. This segment of the river flows through Sheboygan Falls, Kohler and Sheboygan before entering Lake Michigan. The former Tecumseh Products Co. plant in Sheboygan Falls is located on the upper river and is considered the primary source of polychlorinated biphenyl (PCB) contamination to river sediment.

In 1977, the state of Wisconsin detected PCBs during routine sampling of fish. Since then, PCBs have been detected in fish, wildlife, surface water, sediment in the harbor and river, ...
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