The site area includes Sheboygan Harbor, located on Lake Michigan, and the lower Sheboygan River, which discharges into the Sheboygan Harbor. Since then, PCBs have been detected in fish, wildlife, surface water, sediments in the harbor and river and in flood plain soils. The highest concentrations of PCBs have been detected in sediments immediately downstream from a die-casting plant in Sheboygan Falls.
Concentrations decline farther downstream from the plant.
This site is being addressed through Federal, State, and potentially responsible parties' actions. Threats and Contaminants Sediments are contaminated with PCBs and a wide variety of heavy metals. Soils and surface water are contaminated with PCBs and heavy metals including arsenic, chromium, copper, lead, and zinc. People who come into direct contact with or ingest contaminated soil, sediments, or surface water may be at risk. Because fish and wildlife are contaminated with PCBs, people who eat contaminated fish or waterfowl also may suffer adverse health effects.