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Tyco

Menominee River Area of Concern

The sediment cleanup at the Tyco site is complete!

The sediment cleanup of the area near the Tyco Plant on the Menominee River is complete! In 2014, 41,000 cubic yards of sediment contaminated with arsenic were removed from the river. A sand cover was placed in deeper portions of the river that were difficult to dredge, isolating any contamination remaining in the river bottom glacial till. This voluntary Great Lakes Legacy Act (GLLA) project was performed to fast-track the river's healing process following a mandatory cleanup under the Resource Conservation and Recovery Act, which also eliminated any significant sources of arsenic contamination to the river. The GLLA project came in under budget and was completed in one year. 

Location

The Menominee River forms the boundary between Wisconsin and the southern tip of Michigan's Upper Peninsula. The Tyco project is located in the Menominee River Area of Concern in Marinette, WI. The project area includes the south channel, the turning basin, and a small portion of the main channel on the Menominee River.
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Cleanup Process

Sediment remediated: 41,000 cubic yards
Contaminants: Arsenic
Method: Mechanical dredging and sand cover
When: 2014
Partners: U. S. Environmental Protection Agency, Tyco, and Wisconsin Department of Natural Resources
Cost: $22 Million

Long-term Benefits

  • The cleanup removed contaminated sediment from the river, which lessens exposure of arsenic to aquatic life. The benthic community, which forms the foundation of the river's food chain, benefits greatly.

  • Commercial and boating opportunities have improved because of deeper waters. The U. S. Army Corps can once again perform routine dredging for navigation without the cost impediment caused by pollution.

More Information

Stakeholders
City of Marinette
University of Wisconsin-Extension
Menominee River Community Advisory Committee

Wisconsin Department of Natural Resources
Tyco
U. S. Environmental Protection Agency
IISG and GLR logos
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Contact Us

Great Lakes Mud c/o Illinois-Indiana Sea Grant
Purdue University
195 Marsteller Street
West Lafayette, IN 47907-2033

​Email: abelle@illinois.edu
© 2019 Illinois-Indiana Sea Grant, All Rights Reserved.
Illinois-Indiana Sea Grant strives to ensure equal access and an
​inclusive environment.
Website last updated December 14, 2022
  • Home
  • Pollution
    • Dioxins
    • Heavy Metals
    • NAPL
    • Oil and Grease
    • PAHs
    • PCBs
    • TBT
    • TPH
  • Partnership
    • Great Lakes Legacy Act
    • Cost-Sharing
  • Cleanup Process
    • Project Stages
    • Dredging
    • Dry Excavation
    • Caps and Covers
    • Habitat Restoration
  • Waterbody
    • Indiana >
      • East Branch - Grand Calumet River AOC
      • East Branch Phase II - Grand Calumet River AOC
      • East Chicago Waterways - Grand Calumet River AOC
      • Indiana Harbor Canal TSCA - Grand Calumet River AOC
      • Lake George Canal Middle & East - Grand Calumet River AOC
      • Roxana Marsh - Grand Calumet River AOC
      • Stateline - Grand Calumet River AOC
      • West Branch - Grand Calumet River AOC
    • Michigan >
      • Black Lagoon - Detroit River AOC
      • Centennial Park - Detroit River AOC
      • Division Street Outfall - Muskegon Lake AOC
      • Former MGP Site - St. Marys River AOC
      • Lower Rouge River Old Channel - Rouge River AOC
      • River Raisin - River Raisin AOC
      • Riverwalk - Detroit River AOC
      • Ruddiman Creek - Muskegon Lake AOC
      • Ryerson Creek Outfall - Muskegon Lake AOC
      • Tannery Bay - St. Marys River AOC
      • Torch Lake - Torch Lake AOC
      • Upper Trenton Channel - Detroit River AOC
      • Zephyr Site - Muskegon Lake AOC
    • Minnesota >
      • Azcon/DSPA Slip - St. Louis River AOC
      • Minnesota Slip - St. Louis River AOC
      • Munger Landing - St. Louis River AOC
      • Scanlon Reservoir - St. Louis River AOC
      • Slip 3 and Slip C - St. Louis River AOC
      • SLR Interlake/Duluth Tar - St. Louis River AOC
      • Spirit Lake Site - St. Louis River AOC
    • New York >
      • Buffalo River - Buffalo River AOC
    • Ohio >
      • Ashtabula River - Ashtabula River AOC
      • Cuyahoga River Old Channel - Cuyahoga River AOC
      • Gorge Dam - Cuyahoga River AOC
      • Jack's Marine North Slip - Ashtabula River AOC
      • Ottawa River - Maumee AOC
      • Otter Creek - Maumee AOC
    • Wisconsin >
      • Greater Milwaukee Estuary - Milwaukee Estuary AOC
      • Hog Island Inlet - St. Louis River AOC
      • Howards Bay - St. Louis River AOC
      • Kinnickinnic River - Milwaukee Estuary AOC
      • Lincoln Park - Milwaukee Estuary AOC
      • Sheboygan River - Sheboygan River AOC
      • Tyco - Menominee River AOC
    • More coming soon...
  • Education
    • Grade School Curriculum
    • High School Curriculum
    • More Resources >
      • Indiana
      • Michigan
      • Minnesota
      • Ohio
      • Wisconsin
  • Contact