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• Water Quality -Water quality data for the Mine No. 3 spoil wells is presented on Tables 8, 8A, 9, and 9A. A <br />plot of historic total dissolved solids concentration far well 008-SP-SA is presented as Figure 14. Water quality <br />constituent concentrations for all parameters monitored at well 008-SP-SA during 1996 were without exception <br />within the established ranges historically associated with this site. Fourteen water quality constituent <br />concentrations measured for well 008-SP-4B during 1996 fell beyond the ranges previously established for this <br />site. New maximum values noted during April 1996 for well 008-SP-4B include field and lab conductivity, <br />hardness, dissolved magnesium, dissolved sodium, sulfate, total dissolved solids, SAIL, ortho dissolved <br />phosphorus, and dissolved lead. New maximum values recorded in November include dissolved calcium, nitrate, <br />and dissolved cadmium. New minimum values for dissolved manganese were recorded in both April and <br />November. Two full suite analyses are required from each spoil well. During 1996, the second full suite <br />analyses collected from each well was collected during November 1996. <br />Dissolved solids concentrations appear highly variable in well 008-SP-SA (see Figure 14). The spoil well water <br />is acalcium-sulfate type with high bicarbonate and relatively low SAR. The water is higher in dissolved solids <br />than the background bedrock levels. The 1996 data does not indicate any significantly high trace metals <br />concentrations. Manganese levels were noted to be lower in well 008-SP-4B as compared to the values returned <br />during 1995. <br />• SURFACE WATER MONITORING <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 confluence <br />of Foidel and Middle Creeks (sce Figure 2). Middle Creek in the vicinity of Mine 3 is monitored for flow and <br />water quality at hvo (2) Iceations. USGS Site 09243700, also known as Site 700, is located on Middle Creek <br />approximately one mile upstream of the confluence of Foidel and Middle Creeks; Site 29 is Iceated on Middle <br />Crcek approximately one mile downstream of the confluence with Foidel Crcek (see Figure 2). <br />Flows - Streamflow measurements are gauged a[ the two USGS sites and at Site 29. Due to the size of the <br />streams at the established monitoring locations, flows are rated rather than measured using a more accurate <br />controlled section such as a flume. The USGS maintains continuous recorders at Sites 700 and 900 and provides <br />data summaries to CYCC. Plots of historic maximwn, minimum, and mean flow measurements on Foidel Creek <br />at Site 900 are presented as Figure 15 in this report. The 1996 Water Year runoff' hydrograph for site 900 is <br />presented as Figure 16. Plots of historic maximtun, minimum, and mean flow measurements on Middle Creek at <br />Site 700 are presented as Figure l7. The 1996 W ater Year runoff hydrograph for site 700 is presented as Figure <br />I8. Mean historic monthly flows for Site 29 are presented as Figure 19; flow data Cor the 1996 Water Year as <br />Figure 20. Selected flow rate data consisting of historical and 1996 Water Year maximum and minimum <br />. recorded flows, and 1996 irrigation season (June through September) mean flows for Sites 900,700, and 29 are <br />-5- <br />