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COLORADO LEGACY LAND <br /> $CHWARTZWALDER MINE <br /> AW <br /> TABLE E-4:COMPARISON OF$CHWARTZWALDER ANE POOL CONCENTRATIONS P <br /> Number Number Percent June 2000 to <br /> of of Non- of Non- Minimum, Maximum Meanz Medianz Standard July 2007 <br /> Variable Units Samples Detects Detects Deviation Sample Data- <br /> Mean <br /> March 2018 to July 2021 Mine Pool Sample Data <br /> Manganese mg/L 35 0 0% 0.25 1.0 0.74 0.74 0.12 2.1 <br /> Mercury mg/L 11 11 100% - - - - - 0.00036 <br /> Molybdenum mg/L 35 0 0% 0.0371 1.4 0.58 0.58 0.38 1.85 <br /> Silver mg/L 22 22 100% - - - - - 0.0034 <br /> Thallium mg/L 22 21 95% 0.00030 0.00030 - - - 0.025 <br /> Uranium mg/L 35 0 0% 3.95 21 12 12 3.2 41.14 <br /> Zinc mg/L 22 20 91% 0.030 0.050 0.016 0.010 0.0096 0.38 <br /> Total Metals <br /> Aluminum mg/L 22 22 100% - - 0.09 <br /> Antimony mg/L 22 19 86% 0.0016 0.0034 0.00064 0.00040 0.00081 0.020 <br /> Arsenic mg/L 33 2 6% 0.0026 0.034 0.016 0.017 0.0077 0.0058 <br /> Copper mg/L 22 15 68% 0.010 0.10 0.016 0.010 0.020 0.008 <br /> Iron mg/L 35 0 0% 0.80 11 5.7 6.2 2.9 0.62 <br /> Lead mg/L 22 9 41% 0.00010 1 0.0044 0.00044 0.00015 0.00091 0..018 <br /> Magnesium4 mg/L 11 0 0% 117 327 255 257 52 224 <br /> Manganese mg/L 35 0 0% 0.14 1.1 0.77 0.77 0.14 2.63 <br /> Mercury mg/L 11 11 100% - - - - - 0.0004 <br /> Molybdenum mg/L 32 0 0% 0.081 1.3 0.60 0.59 0.36 1.39 <br /> Silver mg/L 22 22 100% - - - - - 0.0023 <br /> Thallium mg/L 1 20 91% 0.00030 1 0.00070 0.00012 0.00010 1 0.00014 0.024 <br /> Uranium mg/L 32 1 0 1 0% 2.9 23 13 12 4.1 1 34.37 <br /> Zinc mg/L 22 20 91% 0.030 0.040 1 0.015 0.010 0.0078 0.366 <br /> Radium 226 PCi/L 22.0 0 0% 73 180 127 125 30 178 <br /> Dissolved <br /> AUGUsf 2020 30 AMENDMENT 6 <br />