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2008 AHR Page 5 <br />installed during June 1997. The surface wells were installed at the north decline and the unit <br />train loadout. The underground wells were installed in the North and South Portals. Depth to <br />water ranged from 56.5 feet below grade in the North Decline well to artesian in the North Portal <br />well. Monitoring of these wells will continue in accordance with permit requirements. Rollins-1 <br />and 4 located underground in the North and South Portals respectively have been sealed. <br />Depth to water data is presented on data page GE-1-1. Quality information is presented on <br />page GE-12. <br />The Rollins Sandstone wells are numbered Rollins 1, 2, 3 & 4 on data page GE-1-1. Rollins-1 is <br />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 located <br />at the north decline. Rollins-4 is an underground well located in the South Portal. It was sealed <br />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 been <br />sealed, there will not be any additional mine inflow studies. <br />Consumptive Use <br />Consumptive use during the year was for dust suppression and culvert maintenance. No <br />records 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 Year <br />yields the tons of TDS discharged for the year. Outfall 016 discharged a total of 736 tons of <br />TDS to the river during the Year. <br />The 2008 TDS discharge represents 0.05% of the 1.56 million tons calculated to be carried by <br />the River. At the Roadside South Portal, water is expected to perpetually discharge through <br />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 is <br />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 seeding and dust control during reclamation operations.