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2004 Annual Hydrologic Report Page 5 <br />• to water ranged from 56.5 feet below grade in the North Decline well to artesian in the North <br />Portal well. Monitoring of these wells will continue in accordance with permit requirements. <br />Rollins-1 and 4 located underground in the North and South Portals respectively have been <br />sealed. Depth to water data is presented on data page GE-1. Quality information is <br />presented on pages GE-10 and GE-11. <br />The Rollins Sandstone wells are numbered Rollins 1, 2, 3 & 4 on data page GE-1. Rollins-1 <br />is an underground well located in the North Portal and was under artesian conditions. It was <br />sealed as of December 1999. Rollins-2 is located at the unit train loadout. Rollins-3 is <br />located at the north decline. Rollins-4 is an underground well located in the South Portal. It <br />was sealed as of April 2000. <br />Mine Water <br />There was no annual mine inflow study performed this Year since one was performed during <br />December 1999 and reported in the 1999 report. Since the North and South Portals have <br />been sealed, there will not be any additional mine inflow studies. <br />Consumptive Use <br />• <br />Consumptive use during the year was for dust suppression and hydro-seeding. No records <br />of this minor amount of consumptive use are available. <br />Impacts <br />The average total dissolved solids for the mine discharges calculated with total flow for the <br />Year yields the tons of TDS discharged for the year. Outfall 016 discharged a total of 802 <br />tons of TDS to the river during the Year. <br />The 2004 TDS discharge represents 0.08% of the 1.05 million tons calculated to be carried <br />by the River. At the Roadside South Portal, water is expected to perpetually discharge <br />through outfall 016. <br />There was no detectable effect of mining on flows in Cottonwood and Rapid Creeks. Mining <br />ceased at the Roadside Portals on December 2, 1999. No further mining from either portal <br />is anticipated in the foreseeable future. <br />Consumptive use will be insignificant in the future because mining and washing of coal has <br />. ceased. Consumptive use will be for dust control during reclamation operations. <br />