Regions: North Slave Region
Tags: mining impacts, infrastructure planning, water chemistry, benthic invertebrates
| Principal Investigator: | Wytrychowski, Scott I (12) |
| Licence Number: | 13722 |
| Organization: | Diavik Diamond Mines Inc. |
| Licensed Year(s): |
2004
|
| Issued: | Sep 09, 2004 |
| Project Team: | Diavik Dia |
Objective(s): The Department of Fisheries and Oceans has issued to Diavik Diamond Mines Inc an authorization which contains specific conditions pertaining to the construction of the A1418 dike. The specific conditions addressed in this study are; 1) metal and trace element concentrations in dike interstitial water, verification of metal and trace element leaching rates from the dikes, and verification of predicted spatial and seasonal water column concentrations of such metals and trace elements concentrations at various locations adjacent to the dikes; 2) metal concentrations in sediment samples obtained from sites radiating from the mine water discharge at the 60 m mixing zone boundary, adjacent to the dikes in Lac de Gras, and at control sites; and 3) a biological survey of the benthic invertebrate community, and an analysis of sediment composition and water chemistry prior to sediment deposition due to dreding and dike construction activities, to assess changes in benthic community composition, abundance and distribution.
