As part of the Edenville Dam restoration, the DeWind OPT team was selected by Four Lakes Task Force to install a Soil-Cement-Bentonite (SCB) cutoff wall through the center of the existing earthen embankment. Using specialized trenching equipment, we blended onsite soils with cement and bentonite to create a low-permeability barrier designed to reduce seepage once the lake is refilled.
The Soil Cement Bentonite wall extended 40 to 90 feet deep into native glacial till and stretched approximately 2,200 feet westward from near the powerhouse toward M-30. This method offered a cost-effective alternative to steel sheet piling for long cutoff walls. Throughout construction, we closely monitored the dam’s response using piezometers and inclinometers to ensure embankment safety and stability.
Read the full update from Four Lakes Task Force →
