080121-08MN006-Sabina Hackett River Project Proposal ... - NIRB

Identification of Potential EnvironmentalEffects and Proposed MitigationIn-stream construction mitigation measures to minimize the effects on surface waters will alsominimize the effects on lake and stream sediment quality (see above section on surface waterquality).Tailings will be physically contained within the TMF in perpetuity. Dams will be constructedwith liners to prevent the leakage of any particulate material. Dams will be designed andconstructed so that tailings cannot overtop the dams. The closure scenario for the tailingsimpoundment will be such that tailings will remain physically stable and contained post-closure.7.3.1.8 Climate ConditionsPotential EffectsPotential project-related impacts to climate conditions include:• Release of green house gasses (GHG)Combustion of diesel in generators, mining equipment, haul truck and aircraft will generategreenhouse gasses for the duration of the construction and operation of the Project.Approximately 46,100 metric tons of diesels will be required per year for running the mine. Thiswill generate roughly 153,000 metric tons of CO 2 equivalents per year (Environment Canada,2005). This is approximately equal to 1% of the 2005 GHG emissions from the CanadianMining Industry and 0.02% of CO 2 equivalents for the 2005 Canadian total production(Environment Canada, 2006).Proposed MitigationMitigation for the release of greenhouse gasses from fuel combustion will be addressed bynecessity due to the high cost of fuel in the region. Vehicles and equipment used for the Projectwill be high in fuel efficiency and movement of vehicles and aircraft will be managed to reducefuel consumption. Additionally, alternative power sources such as wind power generation maybe investigated to attempt to reduce the consumption and necessity of fuel combustion.7.3.1.9 Unique or Fragile LandscapesPotential EffectsPotential project-related impacts to Unique or Fragile Landscapes include:• Removal of esker material for construction purposesEskers consist of gravels and sands deposited in and under glaciers and are the source ofsand/gravel for construction. This material is limited in the area, and is important as wildlifehabitat and potentially important for traditional land use.Proposed MitigationDisturbance of eskers will not be done in any areas hosting archaeological sites. Disturbance ofeskers will be avoided near wildlife denning sites, if possible.January 2008 Hackett River Project – Project Proposal Sabina Silver CorporationReport Version B.1 7–13 Rescan Environmental Services Ltd. (Proj. #833-2)