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EASTSIDE MINE Summary of 1995 Water Monitoring Extent of Mininq No mining was accomplished in 1995. The buildings and surface facilities were removed from the minesite. During June the portals were sealed and surface area was regraded. Flow and Field Parameters The flow and field parameters of the Harvey Gap Outlet above and below the mine continue to demonstrate the seasonal discharges from the Harvey Gap Reservoir. No significant deviations from the 1985- 1994 data are noted. Chemical Parameters The chemical parameter results of the Harvey Gap Outlet above the mine and below the mine generally fall within the ranges established 1985-1993. The conductivity, pH, alkalinity, dissolved solids, SAR, cations, magnesium, sodium, bicarbonate, and sulfate compare favorably with the established ranges for the nine years of sampling. The values below the mine for 1994 are well within the established levels for pH, conductivity, sodium and sulfate. There appears to be seasonal variations; lower values during the warm months and higher values during the cold months. The fluctuations could be due to the rising water level of the reservoir after the water level was drained to base level during the irrigation seasons. There is minimal data available to evaluate the water that was discharged from the mine. The information from the one month of field data indicates minimal change in the water quality due to mining activities. The Eastside Mine was in a reclamation phase since the first of January, 1995. Impacts on Surface and Ground Water No discharge has occurred from sediment pond SP-1. The water monitoring data are listed on the attached tables found in the Data and Statistical Information section beginning on page 5, 7, 9, 10. A comparison of 1995 data with 1984-1994 data indicates no measurable impacts on ground or surface water have occurred due to mining. 3