Great Lakes National Program Office
Division Street Outfall Legacy Act Cleanup
The U.S. Environmental Protection Agency, Michigan Department of Environmental Quality and the City and County of Muskegon completed the Division Street Outfall Legacy Act cleanup in 2012. The project brings Muskegon Lake closer to being removed from a binational list of Areas of Concern in the Great Lakes.
The $12 million project under the Great Lakes Restoration Initiative’s Legacy Act removed about 43,000 cubic yards of sediment contaminated with mercury and polycyclic aromatic hydrocarbons, or PAHs. After the sediment removal, workers placed a layer of sand over about 60 acres of sediment to contain any remaining contamination and speed up natural recovery in the area that is not dredged. The project included nearshore habitat restoration in part of the site.
Tests done between 2005 and 2008 showed mercury contamination in sediment outside the Hartshorn Marina and within the inlet where the DSO is located, as well as other parts of the bay. PAH contamination was limited to the inlet and that part of the bay immediately next to the marina and the mouth of the inlet. Results of the sediment studies were also used in evaluating ongoing sources of contamination to this area of Muskegon Lake. Michigan DEQ's analysis of sediment and stormwater within the DSO storm drain system showed the drain is no longer a source of contaminants to Muskegon Lake.
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- Cleanup Brings Muskegon Lake Area of Concern Closer to Restoration, Delivers Results Under Great Lakes Initiative May 14, 2012 News Release
- Contaminated Sediment Removed from Division Street Outfall (PDF) (2 pp, 381K) May 2012
- First Phase Begins on Project to Clean Up Contaminated Sediment (PDF) (2 pp, 334K) September 2011