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EASTSIDE MINE <br />SUMMARY OF 1991 WATER MONITORING <br />Extent of Minina <br />No mining advances were made in 1991. 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 />1990 data are noted. There was no flow in the Harvey Gap Outlet in <br />November and December due to the low water level in the Harvey Gap <br />Reservoir. <br />Chemical Parameters <br />The chemical parameter results of the Harvey Gap Outlet above the <br />mine and below the mine fall within the ranges established 1984- <br />1990. There is a slight increase in'conductivity for the present <br />year as well as last year. The increase could be due to the rising <br />water level of the reservoir after the water level was drained to <br />base level during the irrigation seasons. <br />The 1991 mine water discharge results are quite similar to those <br />for 1987-1990. This would be expected due to the lack of <br />advancement of the entries. <br />Impacts on Surface and Ground Water <br />No discharge has occurred from the sediment pond SP-1. <br />The water monitoring data are listed on the attached tables found <br />in the Data and Statistical Information section beginning on page <br />5. A comparison of 1991 data with 1984-1990 data indicates no <br />impacts on ground or surface water have occurred due to mining. <br />