Slurry Walls for Hydraulic Control at CCR Sites
Sylvain Payne-Gagnon, Paul Lear – Forgen, McLean, VA, USA
Hydraulic containment involves controlling the movement of contaminated groundwater, preventing the continued expansion of the contaminated zone. CCR impoundments and landfills with impacts to groundwater can benefit from hydraulic containment.
Traditionally, slurry walls have been used for hydraulic containment. An overview of slurry wall techniques will be given to familiarize the audience with these technologies. An example project where Forgen was contracted to install a slurry wall as part of a Vertical Hydraulic Barrier System to encircle the ash consolidation area for a CCR impoundment undergoing closure in-place will be discussed to demonstrate the applicability of this technique.
