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EASTSIDE COAL COMPP.NY, INC• <br />HYDROLOGY REPORT <br />1989 <br />Extent of Mining <br />During 1989, Eastside Coal has advanced the entries of the Eastside Mine <br />approximately 400 feet, for a total of 1100 feet. Three entries are <br />driven on the strike. <br />Chemical Parameters <br />The chemical parameters of the Harvey Gap Outlet above the mine and below <br />the mine fall within the ranges established in 1984-1988. The slight <br />increase in chemical parameters above and below the mine in December, 1989 <br />could be due to the extremely low water levels of the Harvey Gap Reservoir. <br />Low water levels would decrease the head pressure of the discharge through <br />the rock at the outlet and would increase the residence time of the water <br />in contact with the submerged rock formations causing a rise in total <br />dissolved solids. <br />The mine water discharge parameter results fo.r 1987, 1988, and 1989 are <br />quite similar. This would be expected due to the small overall advancement <br />of the entries. <br />Flow and Field Parameters <br />The flow and field parameters of the Harvey Gap'Outlet continue to demonstrate <br />the seasonal discharges from the Harvey Gap Reservoir. No significant <br />deviations from the 1984-198$ data are noted. <br />Impacts on Surface and Ground Water <br />No discharge has occurred from the sediment pond SP-1. <br />The hydrology monitoring data are listed on the attached tables: Flow <br />and Field Parameters, and Chemical Parameters. A comparison of 1989 data <br />with 1984-1988 data indicates that there are no impacts on ground or surface <br />water dug to mining. <br />i <br />I <br />i <br />„~ <br />