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Table IA. Surface Water Analytical Results - <br />East Salt Creek Above McClave (SW-1) <br />LJ <br />• <br />FIELD PARAMETERS UNITS 4Q/05 1Q/06 2Q/06 3Q/06 <br />H SU 8.00 8.30 8.2 8.30 <br />Temperature C 1.5 10.7 24.6 21.0 <br />Conductivity UMHO/CM 4,400 2,900 2,600 5,000 <br />Flow CFS 0.3 2.2 0.8 0.30 <br />LAB ANALYSIS <br />H SU 8.37 8.04 7.99 8.42 <br />Conductivity UMHO/CM 3,548 2,833 2,426 3,851 <br />Total Suspended Solids mg/L 500 39 0 <br />Total Dissolved Solids mg/L 3,440 2,348 4,544 3,807 <br />Total Hardness (CaC03 mg/L 1,220.42 793.6 866.1 11019.8 <br />Sodium Absorption Ratio --- 6.69 6.37 7.36 <br />Bicarbonate mg/L 635.09 477.0 427.3 423 <br />Calcium mg/L 157.6 100.3 89 93 <br />Carbonate mg/L 6.46 <2 <2 13.49 <br />Chloride mg/L 25.17 12.6 <0.5 <0.5 <br />Magnesium m /L 200.8 131.9 157 191.2 <br />Potassium mg/L 3.77 4.34 6.3 <br />Sodium m 506 434 431 540.4 <br />Sulfate m /L 1,984 1,594 1,127 2,100 <br />Aluminum m /L 1.108 <0.1 0.085 <br />Arsenic m /L 0.052 0.244 0.272 0.108 <br />Boron m /L .0517 0.048 0.800 <br />Copper mg/L 0.024 0.01 0.004 <br />Iron mg/L 0.46 0.38 0.09 0.02 <br />Lead m /L 0 <0.01 <0.05 <br />Manganese mg/L 0.303 0.120 0.030 0.07 <br />Selenium mg/L 0.026 0.334 0.090 1.591 <br />Data from 2006 Annual Hydrology Report, McClane and Munger Canyon Mines (J.E. Stover & <br />Associates). <br />ERO Resources Corp. <br />AVF Determination - Red Cliff Mine <br />Page 7 <br />6/19/2008