Reference number : GC-2017-Q1-00355, amendment number : , agreement type : G, recipient legal name : Konhauser, Kurt (University of Alberta), recipient country : CA, recipient province : nan, recipient city : Alberta, recipient postal code : nan, program name english : Engage Grants for Universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : AREVA Resources Canada, headquartered in Saskatoon, SK, has been operating in Canada for over 50 years. For over 20 years AREVA and their predecessor companies operated the Cluff Lake uranium mine, located in northwestern Saskatchewan. Following closure of the mine in 2002, physical decommissioning activities at Cluff Lake were completed between 2004 and 2006. Large areas were re-sloped, while underground mines and the open-pit excavations were either backfilled or allowed to flood with groundwater and surface water. At present, the flooded pits contain elevated levels of metals including uranium (U), nickel (Ni) and arsenic (As),_x000D_
which are sourced from surrounding waste rock, bedrock, groundwater, and surface runoff. The objectives of this study are to: (1) identify the sources of aqueous trace metals which are in excess of provincial and federal guidelines, with a focus on U, Ni and As; (2) understand U cycling in two flooded mine pits of different ages at the Cluff Lake site, and to quantify the benefits of the passive remediation option and identify any long term uncertainties in the passive remediation approach; and (3) gather data to assess if the passive remediation approach could be enhanced through active intervention, such as biostimulation, to facilitate aqueous metal_x000D_
sequestration in the cold climatic region in which the mine site is located., program purpose french : AREVA Resources Canada, headquartered in Saskatoon, SK, has been operating in Canada for over 50 years. For over 20 years AREVA and their predecessor companies operated the Cluff Lake uranium mine, located in northwestern Saskatchewan. Following closure of the mine in 2002, physical decommissioning activities at Cluff Lake were completed between 2004 and 2006. Large areas were re-sloped, while underground mines and the open-pit excavations were either backfilled or allowed to flood with groundwater and surface water. At present, the flooded pits contain elevated levels of metals including uranium (U), nickel (Ni) and arsenic (As),_x000D_
which are sourced from surrounding waste rock, bedrock, groundwater, and surface runoff. The objectives of this study are to: (1) identify the sources of aqueous trace metals which are in excess of provincial and federal guidelines, with a focus on U, Ni and As; (2) understand U cycling in two flooded mine pits of different ages at the Cluff Lake site, and to quantify the benefits of the passive remediation option and identify any long term uncertainties in the passive remediation approach; and (3) gather data to assess if the passive remediation approach could be enhanced through active intervention, such as biostimulation, to facilitate aqueous metal_x000D_
sequestration in the cold climatic region in which the mine site is located., agreement title english : Passive uranium remediation at Cluff Lake, Saskatchewan, agreement title french : Passive uranium remediation at Cluff Lake, Saskatchewan, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-06-14, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year. (2017-2018 to 2018-2019), additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier. (2017-2018 à 2018-2019), owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada