Two Geosyntec practitioners presented at MODFLOW and More 2013: Translating Science into Practice, held June 2-5, 2013, in Golden, Colorado.
Sharon Wadley, a hydrogeologist in Toronto, and David Adilman, P.G., a senior hydrogeologist and an Associate of the firm in Boston, presented a poster on June 3, "Using MODFLOW to Design a 1,700-Foot-Long Vertical Groundwater Cutoff Barrier."
The event was sponsored by the Integrated GroundWater Modeling Center at the Colorado School of Mines. Their poster was presented during a track focused on technology optimization in support of resource management and remediation designs.
The poster detailed the construction and calibration of a 3D numerical groundwater flow model using MODFLOW to design a cutoff barrier at a closed, unlined, and uncapped solid waste landfill. Groundwater beneath the landfill discharges to an adjacent stream and contains numerous contaminants with concentrations well above drinking water regulatory limits. The model was developed to design the shallowest possible vertical barrier depth and still provide adequate groundwater cutoff to the stream.