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Analyte <br />MCL mg/I <br />Secondary <br />Drinking <br />mg/I <br />Acute mg/I <br />Chronic <br />mg /I <br />SW -1 <br />5/2010 <br />SW -1 <br />8/2010 <br />SW -1 <br />11/2010 <br />SW -1 <br />2/2011 <br />SW -1 <br />5/2011 <br />Aluminum <br />NA <br />NA <br />NA <br />NA <br />0.144 <br />Antimony <br />0.006 <br />- <br />- <br /><0.0005 <br /><0.0005 <br /><.0005 <br /><.0005 <br />ND <br />Arsenic <br />0.01 <br />0.340 <br />0.150 <br /><0.0005 <br /><0.0005 <br /><.0005 <br /><.0005 <br />ND <br />Barium <br />2 <br />- <br />- <br />0.0364 <br />0.0406 <br />0.0505 <br />0.0533 <br />NA <br />Beryllium <br />0.004 <br />-- <br />- <br /><0.0005 <br /><0.0005 <br /><.0005 <br /><.0005 <br />NA <br />Boron <br />0.75 <br />-- <br />- <br /><.100 <br />0.2 <br />0.3 <br />1.0 <br />NA <br />Cadmium' <br />0.005 <br />0.002 <br />0.000 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br />0.00006 <br />Calcium' <br />NA <br />NA <br />17.2 <br />19.1 <br />24.7 <br />26.7 <br />15.4 <br />Chromium <br />0.1 <br />0.016 <br />0.011 <br />0.002 <br /><0.001 <br />0.003 <br />0.001 <br />0.0014 <br />Copper ' <br />1.3 <br />0.007 <br />0.005 <br />0.0046 <br />0.0036 <br />0.0019 <br />0.0005 <br />0.007 <br />Iron <br />NA <br />NA <br />NA <br />NA <br />0.071 <br />Leaf?' <br />0.015 <br />0.030 <br />0.001 <br /><0.0001 <br /><0.0001 <br /><0.0001 <br /><0.0001 <br />ND <br />Magnesium' <br />NA <br />NA <br />2.1 <br />2.4 <br />3.0 <br />3.2 <br />1.97 <br />Manganese' <br />0.05 <br />2.370 <br />1.310 <br />0.0011 <br />0.0043 <br /><0.0005 <br /><0.0005 <br />0.0036 <br />Mercury <br />0.002 <br />0.001 <br />0.00001 <br />(total) <br /><0.0002 <br /><0.0002 <br /><.0002 <br /><.0002 <br />ND <br />Nicke1 <br />0.260 <br />0.029 <br />0.0005 <br /><0.0005 <br />0.0009 <br />0.0019 <br />ND <br />Potassium' <br />NA <br />NA <br />0.7 <br />0.5 <br />0.6 <br /><0.5 <br />ND <br />Selenium <br />0.05 <br />0.018 <br />0.005 <br /><.001 <br /><0.001 <br /><.001 <br /><.001 <br />ND <br />Sodium' <br />NA <br />NA <br />0.5 <br /><0.00005 <br />0.00005 <br /><0.00005 <br />ND <br />Silver <br />0.1 <br />0.001 <br />0.000 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br />ND <br />Thallium <br />0.002 <br />- <br />0.015 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br /><0.00005 <br />ND <br />Uranium' <br />0.3 <br />1.119 <br />0.699 <br />0.00009 <br />0.00012 <br />0.00002 <br />0.00018 <br />0.0001 <br />Zinc' <br />5 <br />5 <br />0.079 <br />0.069 <br />0.002 <br />0.002 <br />0.002 <br />0.002 <br />0.0028 <br />Hardness <br />- <br />- <br />0.052 <br />58 <br />74 <br />80 <br />47 <br />SW -1 Table 2 <br />La Plata River (SW -1) <br />Dissolved Metal Concentrations <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex <br />Notes <br />1. All results mg/L <br />2. The Basic Standards and Methodologies for Surface Water, 5 CCR 1002 -31 (Regulation No. 31), <br />Table Ill Metal Paramaters for Aquatic Life <br />3. Regulation No. 31 Table VI: Table Value Standards for Selected Hardness, Hardness <br />Value of 50 <br />mg/L <br />4. Assumes Total Chromium as Chromium (VI) <br />5. -= No Standard ND= Non Detectable NA= Not Analyzed <br />5/20/10 <br />