Remediation and Restoration Projects for Manistique River AOC
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Completed Projects Highlights
Remediation Project Highlight: Contaminated Sediment Removal
A $13.7 million, multi-year sediment remediation project was completed in 2019 to address the remaining Restrictions on Fish and Wildlife Consumption and Restrictions on Dredging Activities BUI.
About 9,400 cubic yards of contaminated sediment and woody debris were removed from Operable Unit (OU) 1 between August and December 2016. OU1 consisted of a pair of bays – North Bay and West Bay – and a private marina. The dredged areas were covered with 6 inches to 1-foot of clean sand. A granulated activated carbon/sand mixture was placed over 108,948 square feet in November 2019 as an additional protective measure.
Some 42,500 cubic yards of contaminated sediment and sawdust were removed from OU2 (lower river and harbor) between June and November 2019. A granulated activated carbon/sand mixture was placed over 211,311 square feet of the cleanup footprint.
Funding for this project was provided by the National Oceanic and Atmospheric Administration through the Great Lakes Restoration Initiative. This project was led by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) with oversight by Arcadis (remedial design contractor). Support was also provided by the U.S. Army Corps of Engineers and EPA. White Lake Dock and Dredge Inc. conducted the dredging operations.
Table of Remediation and Restoration Projects
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Project Title
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Project Description | Date Completed | Targeted BUI(s) |
|---|---|---|---|
| Manistique Restoration Project |
Funded by NOAA, this project removed over 50,000 cubic yards of PCB contaminated sediment and woody debris from the Manistique River AOC. |
2019 |
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| Superfund Remediation | U.S. EPA Superfund removed an estimated 10,602 pounds of PCBs from dredging 187,500 cubic yards of sediment from the river and harbor. | 2000 |
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