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building construction 2

A building covering six acres is under construction on the "Shell Property." It is located in Green Bay on the Lower Fox River next to Georgia-Pacific.

building construction

When construction is completed, this 70-foot-high building on the "Shell Property" will house equipment used in the PCB-contaminated sediment dewatering (squeezing) process, offices and labs.

debris removal

Debris is removed at the "Shell Property" during construction.

working concrete

Contractors pour cement for footings at the new building on the "Shell Property."

Photos courtesy of Tetra-Tech


cutter-head dredge

A cutterhead dredge, such as this, is used to removed contaminated sediment from Little Lake Butte des Morts. (2007)

Truck washing

All trucks are thoroughly washed before heading to a nearby landfill to dispose of clean sediment. (2007)


A field of "geotubes" near Little Lake Butte des Morts. (2007)

Loading sediment.

Clean sediment is loaded onto trucks to be taken to a landfill for proper disposal. (2007)


An in-water pipeline is used to move contaminated sediment from the lake where it will be dewatered (squeezed out) and cleaned. (2007)

Tube closeup.

Sediment is placed in these large tubes where excess water is squeezed from it and drained. (2007)

Air monitoring equipment

During dredging in Little Lake Butte des Morts, the air is continuously monitored to ensure that contaminants released into the air are found and controlled early. (2004)


EPA Project Manager Jim Hahnenberg stands by the "geotextile" used for draining water from sediment dredged from Little Lake Butte des Morts. (2004)

Dredging equipment

Dredging equipment used to clean up contaminated sediment in Little Lake Butte des Morts. (2004)

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