Supporting Technical Assessments

Quattro Column Testing - Analytical Results (Saturated from 19 Oct 17) Sample Origin Sample Name 1772447 1773336 1773978 1774186 1774399 1774636 1775209 1775468 1776284 1776575 1777005 1777535 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 21-Dec-17 28-Dec-17 Laboratory Reference 1835335.5 1839708.5 1847569.5 1852490.5 1859544.5 1866803.5 1871033.5 1878876.5 1882573.5 1892103.5 1900678.5 Week (Relative) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 pH pH Units 4 3.8 3.8 3.8 3 2.8 2.8 2.9 2.9 2.9 2.8 Acidity (pH 3.7) g/m3 as CaCO3 < 1.0 < 1.0 < 1.0 < 1.0 340 350 480 690 650 1,860 1,050 Total Alkalinity g/m3 as CaCO3 < 1.0 < 8# < 8 #1 < 8 #1 < 8 #1 < 10 #1 < 10 < 10 #1 < 8 #1 < 8 < 10 #1 Electrical Conductivity (EC) mS/m 180.1 137.2 151.4 165.1 366 408 406 388 377 363 376 Dissolved Aluminium g/m3 80 72 460 420 300 Dissolved Antimony g/m3 0.0025 0.0003 0.0012 < 0.0010 < 0.0010 Dissolved Barium g/m3 0.043 0.029 0.028 0.0171 0.0135 Dissolved Calcium g/m3 99 94 162 173 122 Dissolved Cobalt g/m3 1.86 1.58 4 3.6 2.8 Dissolved Iron g/m3 37 1.6 128 107 300 Dissolved Magnesium g/m3 No Leachate No Leachate 44 42 95 82 72 Dissolved Manganese g/m3 1.89 1.71 4.5 4.4 5.9 Dissolved Mercury g/m3 < 0.00008 < 0.00008 < 0.00008 < 0.00008 0.0001 < 0.00008 < 0.00008 < 0.00008 < 0.00008 < 0.0003 < 0.00008 Acid Soluble Mercury g/m3 Dissolved Molybdenum g/m3 < 0.0002 < 0.0002 < 0.0004 < 0.0010 < 0.0004 Dissolved Potassium g/m3 57 55 62 58 44 Dissolved Selenium g/m3 0.026 0.0164 0.036 0.019 0.006 Dissolved Silver g/m3 < 0.00010 < 0.00010 < 0.0002 < 0.0005 < 0.0005 Dissolved Sodium g/m3 22 14.9 5.5 4.9 3.9 Dissolved Strontium g/m3 0.57 0.49 0.87 0.93 0.69 Dissolved Uranium g/m3 0.0116 0.0136 0.029 0.032 0.021 Dissolved Vanadium g/m3 0.0015 < 0.0010 0.022 0.011 0.047 Sulphate g/m3 1300 860 960 1110 3800 3900 3300 3600 3500 3500 65 Dissolved Heavy Metals Dissolved Arsenic g/m3 0.02 0.0092 0.0025 0.001 < 0.010 0.005 0.005 < 0.005 < 0.002 < 0.005 < 0.010 Dissolved Cadmium g/m3 0.0161 0.0111 0.0125 0.0138 0.024 0.028 0.028 0.022 0.021 0.021 0.021 Dissolved Chromium g/m3 0.026 0.0092 0.0146 0.02 0.182 0.24 0.22 0.24 0.195 0.24 0.26 Dissolved Copper g/m3 1.82 1.27 1.21 1.33 3.4 3.4 2.7 2.2 1.83 1.43 1.01 Dissolved Lead g/m3 0.0041 0.0036 0.0058 0.0047 0.0182 0.02 0.0164 0.0064 0.0051 0.0036 0.002 Dissolved Nickel g/m3 1.25 0.93 1.09 1.26 3 3.1 2.7 2.2 2.2 2.5 2.1 Dissolved Zinc g/m3 1.48 1.16 1.36 1.44 4.2 4.4 3.9 3.9 3.9 4.4 4.4 Field Parameters pH pH Units 7.1 4.24 3.95 4.11 3.58 3.47 2.85 2.95 2.43 2.43 2.47 2.42 2.65 3.1 2.52 2.43 2.36 2.37 2.1 Electrical Conductivity (EC) mS/m 7.18 123.4 79.7 117.4 161.2 127 163 397.5 434 395 392 391 397 369 375 393 400 408 430 Temperature °C 13.7 16.2 13.9 15.5 14.8 11.3 17.4 16.2 13.9 14.5 18.7 19.6 17.3 24.2 20.8 24.4 27.5 20.4 14.7 Leachate Volume recovered mL 100 0 0 910 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 Volume in bucket mL 0 0 0 3400 3000 2000 2400 0 1150 6000 0 0 0 0 0 0 0 0 0 0 0 # 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. COL5

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