Grant: Applied Research and Development Grants - Level 1

Constructed wetlands have been employed as passive treatment systems for metal contaminated mine drainagein Canada. However, relatively few wetlands have been used in northern environments and further studies areneeded to examine the effectiveness and design of these wetlands for cold climates with short growing seasons.Casino Mining Corporation (CMC) is currently undergoing the environmental assessment process with YukonEnvironmental and Socio-economic Assessment Board (YESAB), which requires the provision of a conceptualclosure and reclamation plan. As part of this plan, CMC is proposing the use of engineered wetlands as apassive care solution for the treatment of Open Pit and Tailings Management Facility discharge. Potentialconcern from the local community includes the risks of metal uptake by plants and further dissemination ofcontaminants into the environment through wildlife. Additionally, assurances are needed to prove thatwetlands will effectively treat mine effluent, especially under cold climate conditions. The goal of this projectis to evaluate potential Cu, Cd, Fe, Se and Zn uptake in selected wetland plant species to help mitigate risks.The project will provide an initial investigation into the short-term efficiency of heavy metal removal fromwater and metals uptake and partitioning in northern wetlands.