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EASTSIDE MINE <br />Summary of 1992 Water Monitoring <br />Extent of Minina <br />No mining advances were made in 1992. The entries of the Eastside <br />Mine are advanced a total of 1100 feet. Three entries are driven <br />on the strike. <br />Flow and Field Parameters <br />The flow and field parameters of the Harvey Gap Outlet above and <br />below the mine continue to demonstrate the seasonal discharges from <br />the Harvey Gap Reservoir. No significant deviations from the 1985- <br />1991 data are noted. <br />There was no flow in the Harvey Gap Outlet-Above Mine in December <br />due to the low water level in the Harvey Gap Reservoir. There was <br />a small amount of water seeping around the weir from which samples <br />were taken for the field parameters as well as the chemical <br />parameters. <br />At the concrete structure, the sampling point for field and <br />chemical parameters in the Harvey Gap Outlet-Below Mine, there were <br />minimal flows during January, February, March, September, October, <br />November and December. In January, the ice was so thick that no <br />sample was taken. In February, March, September, October and <br />November, these were enough flows for field parameter sampling. <br />During December, due to ice buildup and the low flow, samples for <br />field parameters and chemical parameters were taken below the <br />concrete structure. <br />At the flow sampling points on the East and West Laterals of the <br />Harvey Gap Outlet-Below Mine, there was no flow in January, <br />February, March, September, and October. <br />Chemical Parameters <br />The chemical parameter results of the Harvey Gap Outlet above the <br />mine and below the mine generally fall within the ranges <br />established 1985-1991. During the winter months, conductivity, pH, <br />alkalinity, dissolved solids, SAR, cations, magnesium, sodium, <br />bicarbonate, and sulfate have been reported in the higher portions <br />of the established ranges for the eight years of sampling. The <br />values below the mine for December 1992 slightly exceed the <br />established high levels for pH, conductivity, sodium and sulfate. <br />Causes for these higher values are unknown. There appears to be <br />3 <br />