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TABLE 2-1 <br />ALLUVIAL MONITORING HOLE WATER QUALITY PARAMETERS' <br />FIELD MEASUREMENTS LABORATORY ANALYSIS* <br />pH Arsenic Magnesium <br />Conductivity at 25° Beryllium Hardness2 <br />Temperature Bicarbonate Manganese <br /> Boron Nickel <br /> Cadmium Nitrogen-Nitrate <br /> Calcium Nitrogen-Ammonia <br /> Carbonate Potassium <br /> Chloride Selenium <br /> Chromium (trivalent) Sodium <br /> Copper Sulfate <br /> Fluoride Total Dissolved Solids <br /> Iron Sodium Adsorption Ratio <br /> Lead Zinc <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 />2 Hardness is not a parameter required by the mining permit. <br />* Dissolved metals analyses for alluvial and bedrock groundwater <br />Per the DRMS permit requirements, water from the groundwater monitoring holes 294M, <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 the 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, 2007 to September 30, 2008) 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 />4