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TABLE 2-1 <br />ALLUVIAL MONITORING HOLE WATER QUALITY PARAMETERS' <br />FIELD MEASUREMENTS LABORATORY ANALYSIS <br />pH Bicarbonate Manganese <br />Conductivity at 25° Boron Nickel <br />Temperature Calcium Nitrogen-Nitrate <br /> Carbonate Nitrogen-Ammonia <br /> Chloride Potassium <br /> Copper Selenium <br /> Fluoride Sodium <br /> Iron Sulfate <br /> Lead Total Dissolved Solids <br /> Magnesium Sodium Adsorption Ratio <br />Hardness <br />' Groundwater holes in Leases C-8424 and C-8425 were sampled from the middle facie zone and <br />analyzed for these parameters prior to entering those leases, and will be sampled and analyzed <br />again prior to the wells being mined out or before bond release. <br />* Dissolved metals analyses for alluvial and groundwater <br />Per the DRMS permit requirements, water from the groundwater monitoring holes 29-4M, <br />30-8M, 31-7M, 32-7M, and 33-8M in Leases C-8424 and C-8425 were sampled and <br />analyzed during the 1996-1997 water year. Appendix I of the Thirteenth Annual Hydrology <br />Report provides the analytical results. Monitoring hole 32-7M was sampled prior to being <br />mined out in 2001 and 30-8M before it had a chance to drain after being completely mined <br />around in late 2006. Data is provided in Appendix C of the Seventeenth Annual Hydrology <br />Report for 32-7M and this, Twenty Third Annual Hydrology Report, for 30-8M. <br />2.2 Summary and Analysis of Deserado Mine Hydrology Data <br />Data collected during this water year (October 1, 2006 to September 30, 2007) have been <br />summarized and compared with the data from the baseline hydrology inventory. Surface <br />water and ground water discussions are presented separately in the following sections. <br />2.2.1 Ground Water Monitoring Data Groundwater monitoring data consists of water <br />levels measurements. Tabulation of the data is included in Appendix C. Hydrographs for <br />4 <br />