• The Effects of Surface Disturbances on the Leaching of Heavy Metals

      Dixson, David P.; Brown, Edward J. (University of Alaska, Institute of Water Resources, 1987-10)
      The harmful effects of heavy metal contamination of surface waters impacted by gold mining activity are well documented. An examination was conducted on the effects of surface disturbances in Wade Creek on the concentrations of heavy metals in solution, and whether Thiobacillus ferrooxidans, a bacteria found in heavy metal contaminated drainages from placer mines, is found in the drainage. Thiobacillus ferrooxidans was not detected in this particular setting. The effects of mining activity and relandscaping of stockpiled tailings showed in a short distance, a net increase of dissolved arsenic, copper, zinc, and iron. However, the long distance impact of dissolved metals was minimal. Generally, it seems that the dampening of the total suspended solids had a direct effect on the removal of metals dissolved in solution.
    • Water Quality in the Great Land, Alaska's Challenge: Proceedings

      Huntsinger, Ronald G. (University of Alaska, Institute of Water Resources, 1987-10)
      Administering water quality programs -- Surface water issues -- Groundwater issues -- Sediments and resource development