A Summary of Modeling Studies of the South Bay Mine Site

Abstract

The former Cu/Zn base-metal mine at South Bay, Ontario adjacent to Confederation Lake north of Ear Falls, Ontario has been shut down since 1985. Presently the mine site is undergoing decommissioning using ecological engineering and bioremediation technology. This report summarizes the global site-wide model and the calibration and results of the tailings area model and the town-site model that have been used from 1998 through 2000 to assess: the groundwater flow characteristics (volumes, velocities, directions) in the various stratigraphic units and areas of the site; the release and transport of contaminants from the tailings; the effectiveness of various remedial alternatives, such as installing a ditch, creating an impermeable cap, lowering the decant pond water level.