Supporting Technical Assessments

GHD | Oceana Gold New Zealand Ltd. | 12552081 | Waihi North Project D-8 Table 8 Mataura Trib 2 Analytes Units Count Value Alkalinity - Total g/m3as CaCO3 1 6.9 Aluminium-Dissolved g/m3 1 0.029 Antimony-Dissolved g/m3 1 0.0002 Arsenic-Dissolved g/m3 1 0.001 Bicarbonate g/m3at 25°C 1 8.4 Boron-Dissolved g/m3 1 0.01 Cadmium-Dissolved g/m3 1 0.00005 Calcium-Dissolved g/m3 1 1.22 Chloride g/m3 1 7 Chromium-Dissolved g/m3 1 0.0005 Cobalt-Dissolved g/m3 1 0.0002 Copper-Dissolved g/m3 1 0.0005 Electrical Conductivity mS/m 1 5 Hardness-Total g/m3as CaCO3 1 6.4 Iron-Dissolved g/m3 1 0.14 Lead-Dissolved g/m3 1 0.0001 Magnesium-Dissolved g/m3 1 0.82 Manganese-Dissolved g/m3 1 0.0148 Mercury-Dissolved g/m3 1 0.00008 Molybdenum-Dissolved g/m3 1 0.0002 Nickel-Dissolved g/m3 1 0.0005 Nitrate-N g/m3 1 0.25 Nitrate-N + Nitrite-N g/m3 1 0.25 Nitrite-N g/m3 1 0.002 pH pH units 1 6.3 Potassium-Dissolved g/m3 1 0.92 Sodium-Dissolved g/m3 1 6.5 Sulphate g/m3 1 8 Zinc-Dissolved g/m3 1 0.0018

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