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2009 AHR Page 5 <br />page GB-2. Diagrams G09-5 and 6 are graphical representations of water level elevations in <br />these piezometers. Table G09-2 was prepared to show statistics on these water levels <br />corresponding to high and low flows in the adjacent river. Quality information is presented on <br />page GD-14. <br />A former mine dewatering hole (N-1) located at the North Decline area of the mine is used to <br />monitor the water level in the abandoned portions of the Roadside South Portal. Since <br />discharge point 016 was put into service, the water level in N-1 is virtually constant and it is <br />expected to stay at an elevation of about 4758. The results of monitoring N-1 are presented in <br />Table M09-2. <br />In order to characterize the Rollins Sandstone two surface and two underground wells were <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 737 tons of <br />TDS to the river during the Year.