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US Steel Minntac Tailings Basin. 1 mile. Observed Average Sulfate Concentration and Mass in Rivers and Seeps. Average Sulfate Mass.

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US Steel Minntac Tailings Basin

1 mile


Observed Average Sulfate Concentration and Mass in Rivers and Seeps

Average Sulfate Mass

  • Calculations are based on observations from approximately 2000 to present except for the Dark River Stream which are from 3 measurements from November 2011 to September 2012

  • * 545 gpm at conc of 811 mg/L (Flow from Table 6.2 "Simulated Versus Estimated Seep Flow Rates and Groundwater Discharge Rates" - CRA June 2013 Report:)

  • SCRS = Seepage Collection and Return System



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