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TABLE 2-1 ' ALLUVIAL MONITORI NG HOLE WATER QUALITY PARAMETERS' FIELD MEASUREMENTS LABORATORY ANALYSIS' ' H p Bicarbonate Manganese Conductivity at 25° Boron Nickel ' Temperature Calcium Nitrogen-Nitrate Carbonate Nitrogen-Ammonia Chloride Potassium ' Copper Selenium Fluoride Sodium ' Iron Sulfate Lead Total Dissolved Solids ' Magnesium Sodium Adsorption Ratio ' Groundwater holes in Leases C-8424 and C-8425 were sampled from the middle facie zone ' and analyzed for these parameters prior to entering those leases, and will be sampled and analyzed again prior to the wells being mined out or before bond release. • Dissolved metals analyses for alluvial and groundwater ' As per the DMG permit requirement, water from the groundwater monitoring holes 29~, 30-8, ' 31-7 and 33-8 in Leases C-8424 and C-8425 were sampled and analyzed during the 1996-1997 water year. Appendix I of the Thirteenth Annual Hydrology Report gives the analysis results. 2.2 Summary and Analysis of Deserado Mine Hydrology Data ' Data collected during this water year (October 1, 1998 to September 30, 1999) have been summarized and compared with the data from the baseline hydrology inventory. Surface water and ground water discussions are presented separately in the following section/s/. ' /'~h7`S~y rUn ~(o ~en~v~ ~CC S 2.2.1 Ground Water Monitoring Data Groundwater monitoring data consists of water levels ' measurements. Tabulation of the raw data is included in Appendix C. Hydrographs for the 16 stations (monitor holes) from which water level data were collected are included in Appendix D. Table 2-2 is a statistical sttummarry of/the water level data. ' [Q...w~.- Imo- ~ `I \GI~I ~~/~l in f d- r `'~C'.-~ 2.2.1.1 Alluvial Water Level Data Water level data have been collected from the one ' remaining original alluvial aquifer monitoring hole (QAL-5). Five other alluvial monitoring holes 4