SLIDE 23 BULLMOOSE MINE – Remedial Options Selection
Dettah - February 18, 2015
Mine Component Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 (Hybrid Option) Selection
Mine Openings (Shafts, trenches) Do Nothing Engineered Cap
Engineered Cap
Non-Hazardous Waste (Buildings, wood, other) Do Nothing Burn Landfill on-site Off-site Disposal
Wood burn Metal, other
disposal
Hazardous Waste (Asbestos, fluids, batteries …) Do Nothing Landfill on-site Off-site disposal
Off-site disposal
Sediments (Portal seep and wetland) Do Nothing Monitor seep, leave wetland Monitor seep, replace wetland Treat seepage, leave wetland Treat seepage, replace wetland
Monitor seep, leave wetland
Sewage lagoon Do Nothng Excavate and landfill on-site Engineered cover Excavation and disposal off-site
Excavate and landfill on-site
Impacted Soils (PHCs and metals) Do Nothing Cover in place and monitor Excavation and disposal on-site Excavation and disposal off-site Phyto- remediation
Excavation and disposal on- site
Impacted Soils (PHCs) Do Nothing Cover in place and monitor Excavation and land-farm on-site Excavation and disposal off-site Phyto- remediation
Excavation and land-farm on- site
Tailings Do Nothing Cover in-place and monitor Excavation and disposal on-site Excavation and disposal off-site
Excavation and disposal on- site