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• Table 2. Mine Inflow/Seep Analytical Results - <br />Underground Sample (Mine Discharge) <br /> <br />• <br />FIELD PARAMETERS UNITS 1 /06 I Q/07 3Q/07 <br />H SU 7.8 8.6 <br />Temperature C 12.4 12.2 <br />Conductivity UMHO/CM 1,805 1,900 <br />Flow GPM 150 60 <br />LAB ANALYSIS <br />H SU 8.42 8.37 8.76 <br />Conductivity UMHO/CM 2,336 2,266 2,681 <br />Total Suspended Solids mg/L 27.0 0.0 17 <br />Total Dissolved Solids mg/L 1,700 1,601 1,901 <br />Total Hardness (CaC03 m /L 511.12 93 106 <br />Sodium Absorption Ratio m /L 4.59 13.450 20.47 <br />Bicarbonate m L 1,297 1,017 824 <br />Calcium mg/L 59.40 9 11.4 <br />Carbonate m 57.73 9.0 65.0 <br />Chloride m /L 25.17 <0.5 43.6 <br />Magnesium m /L 88.1 17 18.9 <br />Potassium mg/L 2.86 7.1 8.6 <br />Sodium mg/L 238.6 298 487.5 <br />Sulfate mgAL 285.6 326 557.7 <br />Aluminum m <0.05 <0.05 0.08 <br />Arsenic mg/L 0.007 0.01 0.026 <br />Boron mg/L 0.95 0.850 0.138 <br />Copper mg/L 0.025 0.011 0.016 <br />Iron m /L 0.070 <0.01 0.083 <br />Lead m /L <0.05 0.050 0.100 <br />Manganese mg/L <0.01 0.057 0.008 <br />Selenium mg/L 0.177 0.340 0.028 <br />Data from DRMS Permit (J.E. Stover & Assoc.) <br />ERO Resources Corp. <br />AVF Determination - Red Cliff Mine <br />Page 9 <br />6/19/2008