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• manganese values remain somewhat variable. Manganese concentrations during 1995 in well 008-AV-2 were <br />generally lower than those recorded in 1994. The manganese levels documented during 1995 maintained <br />levels within the historical ranges established at this site. <br />Spoils <br />Two wells in the backfilled area of Mine 3 (008-SP-4A and 008-SP-SA) were installed in 1985 to monitor <br />water levels and water quality in mine spoils (see Figure 2). One well, 008-SP-4A, remained dry since it <br />was installed. During 1992, the well was determined to have a separated casing. As a result, CYCC <br />installed a replacement spoil monitoring well (008-SP~B) near the northern embanlanent of Pond M3S (Site <br />76). Due to the timing of this installation, CYCC did not provide initial monitoring information for the <br />replacement well until the 1993 AHR submittal. <br />Water Levels -Plots of historic water levels in the two currently monitored Mine 3 spoil wells are presented <br />as Figures 12 and 13 in this report. 1995 water levels occurced at levels typical for these sites. <br />Water Quality -Water quality data for the Mine No. 3 spoil wells is presented on Tables 8, 8a, 9, and 9a. <br />A plot of historic total dissolved solids concentration for well 008-SP-SA is presented as Figure 14. Water <br />quality constituent concentrations for all parameters monitored at well 008-SP~B during 1995 were without <br />• exception within the established ranges historically associated with this site. Five water quality constituent <br />concentrations measured for well 008-SP-SA during 1995 fell beyond the ranges established to date for this <br />site. New maximum values noted during 1995 for well 008-OSP-SA include lab conductivity, total and <br />bicarbonate alkalinity, sulfate, and manganese recorded in September. <br />Dissolved solids concentrations appear highly variable in well 008-SP-SA (see Figure 14). The spoil well <br />water is acalcium-sulfate type with high bicarbonate and relatively low SAR. The water is higher in <br />dissolved solids than the background bedrock levels and spoil spring discharges. The 1995 data does not <br />indicate any significantly high trace metals concentrations. Manganese levels remained comparable in well <br />008-SP-4B to the values returned during 1994. <br />SURFACE WATER MOMTOR[NG <br />Foidel Creek in the vicinity of Mine 3 is monitored for flow and water quality at USGS Site 09243900 also <br />known as Site 900. Site 900 is located on Foidel Creek approximately one-half mile upstream of the <br />confluence of Foidel and Middle Creeks (see Figure 2). Middle Creek in the vicinity of Mine 3 is monitored <br />for flow and water quality at two (2) locations. USGS Site 09243700, also known as Site 700, is located <br />on Middle Creek approximately one mile upstream of the confluence of Foidel and Middle Creeks; Site 29 <br />• is located on Middle Creek approximately one mile downstream of the confluence with Foidel Creek (see <br />Figure 2). <br />-4- <br />