| The City of Regina Landfill is situated on the Condie Moraine, a major aquifer in the Regina area, which is said to have been contaminated by domestic and industrial activity in addition to the lechate from the landfill. Four main hydrogeological units have been identified at the site: Regina clay, Condie aquifer, a lower till aquitard, and the Regina aquifer. These four hydrogeological units are known to connect with a major aquifer called Zehner east of the Regina area. The bottom of the Regina and Zehner aquifer marks the base of the flow system in this study.; As a preliminary phase in a predictive mass-transport modeling study, a 3-D MODFLOW model was developed for the aquifers underlying the landfill using predefined model inputs, which include various boundary conditions and identifying zones of varying hydraulic conductivity. Groundwater levels were extracted during the model calibration process for comparison to the actual levels recorded from 1987 to 2004. The simulated hydrograph provides a close representation of the actual water levels over time. (Abstract shortened by UMI.)... |
