Supporting Technical Assessments

Quattro Column Testing - Analytical Results Sample Origin Sample Name 1772446 1773335 1773977 1774185 1774398 1774635 1775208 1775467 1776283 1776574 1777004 Date 11-Aug-17 18-Aug-17 24-Aug-17 31-Aug-17 7-Sep-17 14-Sep-17 21-Sep-17 29-Sep-17 5-Oct-17 12-Oct-17 19-Oct-17 26-Oct-17 2-Nov-17 10-Nov-17 16-Nov-17 23-Nov-17 30-Nov-17 7-Dec-17 14-Dec-17 Laboratory Reference 1835335.4 1839708.4 1847568.4 1852490.4 1859544.4 1866803.4 1871033.4 1878876.4 1882573.4 1892103.4 Week (Relative) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 pH pH Units 3.8 4 3.8 3.8 3.2 3.1 2.9 3 2.8 2.6 Acidity (pH 3.7) g/m3 as CaCO3 < 1.0 < 1.0 < 1.0 < 1.0 44 97 330 1,670 1,520 1,690 Total Alkalinity g/m3 as CaCO3 < 1.0 < 8# < 8 #1 < 8 #1 < 8 #1 < 10 #1 < 10 < 10 #1 < 8 #1 < 8 Electrical Conductivity (EC) mS/m 307 177.4 171.4 144.1 260 275 415 410 421 419 Dissolved Aluminium g/m3 197 87 240 480 440 Dissolved Antimony g/m3 0.0034 0.0005 0.0005 < 0.0010 < 0.0010 Dissolved Barium g/m3 0.049 0.028 0.024 0.0194 0.0154 Dissolved Calcium g/m3 176 92 141 181 105 Dissolved Cobalt g/m3 3.4 1.86 3.1 4.4 3.1 Dissolved Iron g/m3 56 20 25 89 220 Dissolved Magnesium g/m3 No Leachate No Leachate 80 50 80 91 50 Dissolved Manganese g/m3 3.7 2.1 2.8 4.5 4.2 Dissolved Mercury g/m3 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.0003 Acid Soluble Mercury g/m3 Dissolved Molybdenum g/m3 0.0004 < 0.0002 < 0.0004 < 0.0010 < 0.0010 Dissolved Potassium g/m3 72 56 63 60 30 Dissolved Selenium g/m3 0.05 0.021 0.036 0.03 0.01 Dissolved Silver g/m3 < 0.0002 < 0.00010 < 0.0002 < 0.0005 < 0.0005 Dissolved Sodium g/m3 45 24 4.9 4.5 2.2 Dissolved Strontium g/m3 1.01 0.51 0.73 1 0.65 Dissolved Uranium g/m3 0.025 0.0144 0.025 0.033 0.023 Dissolved Vanadium g/m3 0.004 < 0.0010 < 0.002 0.005 0.04 Sulphate g/m3 2700 1210 1100 890 2100 2200 3,600 4500 4,600 4100 Dissolved Heavy Metals Dissolved Arsenic g/m3 0.027 0.016 0.005 0.0025 0.004 < 0.002 0.006 0.011 < 0.005 0.04 Dissolved Cadmium g/m3 0.029 0.0152 0.0155 0.0125 0.02 0.024 0.03 0.02 0.022 0.0159 Dissolved Chromium g/m3 0.069 0.023 0.0149 0.0086 0.061 0.066 0.22 0.35 0.34 0.41 Dissolved Copper g/m3 3.1 1.58 1.46 1.28 3.4 2.1 4 2.9 3 2.3 Dissolved Lead g/m3 0.013 0.0073 0.0102 0.0072 0.0195 0.028 0.032 0.0103 0.0093 0.0032 Dissolved Nickel g/m3 2.3 1.25 1.25 1.09 2.2 2.4 3.2 2.1 2.5 2.1 Dissolved Zinc g/m3 2.8 1.57 1.62 1.38 3.1 3.1 4.9 5.2 5.4 5 Field Parameters pH pH Units 7.45 4.23 4.13 4.01 3.64 3.65 3 3.1 2.57 2.97 2.48 2.33 2.44 2.25 2.14 1.95 1.95 Electrical Conductivity (EC) mS/m 8.38 169.1 92.8 148.3 181.8 122 140 271.5 324 281 411 416 439 436 409 460 435 Temperature °C 13.7 18.8 14.5 15.8 15 11.3 18 15.4 14.1 14.3 17.5 17.3 16.6 21.9 20.9 22.8 27 Leachate Volume recovered mL 480 0 0 830 1000 1000 1000 1000 1000 1000 1000 750 1000 1000 1000 1000 1000 1000 1000 Volume in bucket mL 0 0 0 3500 3200 1500 1700 0 600 3500 0 0 2500 0 0 0 0 1500 1200 # Due to the nature of sample, a 10 fold dilution was required for the Total Alkalinity analysis. This has resulted in a detection limit greater than that normally achieved. * Bucket overflowing. Volume assumed to be 20 L. COL4

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