Detailed Analysis of Potential Environmental Impacts of Taconite Tailings Disposal in the Minorca Pit on Water Quality in the Missabe Mountain Pit: Final ReportMinnesota Department of Natural Resources, Division of Lands and Minerals, 2000 - Mineral industries - 83 pages |
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5-10 forest vegetation 5-10 grassy vegetation Adams addition analyses Approach approximately arsenic assumed Based Berndt and Lapakko Biwabik aquifer boron calculations carbonate clear water pool collected conducted considered contained contribution controls decrease determine dilution drinking water quality EC levels elevated Established forest vegetation estimate exiting expected experiments Figure flow-weighted average fluoride concentrations fluoride levels forest vegetation 12 geochemical ground water impact increase Inland input iron less manganese concentrations manganese levels mg/L minerals Minnesota Minorca Pit Minorca Pit clear Missabe Mountain Pit MN DNR modeling molybdenum molybdenum concentrations nd nd observed Operational Operational maximum Operational measurements oxidation period Pit clear water plant discharges precipitation present process water range reach reclamation reduced release removal represent seep simulated source term Standard reclamation Summary Table taconite tailings tailings basin tailings disposal tailings pore waters tank experiments transport ug/L ug/L Table Virginia volume water quality standard water sources