Mount Morgan Mine Upper Mundic Gully TSF EA Amendment

Appen d ix A - Tabulated Groundwater Chemistry Results

Heritage Minerals MMM EA Compliance Review

Total Dissolved Solids Aluminium Arsenic Cadmium Chromium Cobalt

Electrical Conductivity

pH Value

Copper

Lead Manganese Nickel

Selenium Zinc Total Cyanide

units pH Unit

µS/cm

mg/L

WQO lower WQO upper

7.5 8.1

2,765 10,700 13,200 12,000 20,500 10,500 10,300 9,960 10,200 10,300 11,700 11,600 11,500 10,900 11,400 11,400 12,900 16,400 10,700 11,100 11,200 11,000 11,000 18,200 15,700 10,200 13,000 8,480 15,000 11,800 10,100 9,250 11,400 11,300 12,600 11,900 12,600 12,500 12,500 12,100 11,000 11,700 9,950 11,600 11,400 11,400 11,400 11,700 11,600

1,797 19,800 24,900 21,200 54,400 27,100 16,900 20,600 17,200 17,600 18,700 19,700 18,700 17,400 19,300 19,800 30,300 32,000 19,900 17,600 16,500 16,900 19,700 34,000 31,400 18,400 24,800 13,400 31,300 29,600 17,100 16,100 20,700 20,900 23,800 20,900 22,300 22,200 21,000 23,000 20,800 20,100 18,500 20,600 19,600 20,100 21,600 21,800 19,500

0.055

0.013 0.027 0.016 0.019 0.048 0.018 0.016 0.021 0.015 0.012 0.018 0.015 0.015 0.015 0.016 0.013 0.022 0.019 0.02 0.022 0.016 0.025 0.016 0.026 0.02 0.027 0.016 0.013 0.015 0.015 0.019 0.015 0.03 0.02 0.025 0.017 0.021 0.022 0.019 0.016 0.018 0.018 0.019 0.029 0.021 0.032 0.021 0.02 0.016

0.0002 0.218 0.213 0.184 0.196 0.0535 0.192 0.211

0.001 0.043 0.096 0.063 0.398 0.173 0.02 0.033 0.015 0.018 0.022 0.035 0.022 0.04 0.015 0.022 0.18 0.217 0.031 0.02 0.019 0.019 0.026 0.276 0.219 0.031 0.092 0.038 0.17 0.172 0.028 0.016 0.025 0.028 0.042 0.039 0.033 0.036 0.019 0.032 0.028 0.028 0.023 0.037 0.03 0.031 0.033 0.028 0.028

0.001 3.29 4.78 3.41

0.0014

0.0034 <0.010 <0.005 <0.001 <0.010 <0.001 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.005 <0.001 <0.001 <0.001 0.006 0.01 <0.010 0.005

1.9

0.011 0.722 0.696 0.617 1.08 0.378 0.555 0.632 0.545 0.598 0.632 0.671 0.588 0.592 0.613 0.635 0.937 0.975 0.724 0.597 0.598 0.657 0.66 0.964 0.994 0.692 0.703 0.786 0.479 0.58 0.575 0.4 0.586 0.62 0.731 0.669 0.673 0.68 0.682 0.704 0.636 0.548 0.614 0.637 0.641 0.64 0.665 0.562

0.011 <0.10 <0.05 0.02 <0.05 <0.05 0.01 0.01 0.12 0.02 <0.05 0.07 0.05 0.05 <0.10 0.02 0.02 0.02 0.02 0.03 0.03 0.03 <0.05 <0.10 <0.05 0.01 <0.05 <0.05 0.02 0.02 0.11 0.02 <0.05 0.09 <0.10 0.06 <0.10 0.02 0.02 0.02 0.02 0.03 0.03 0.04 0.02 0.02

0.008 26.9 27.1 23.3

0.007

MB05-S 31/08/2022 2.74 MB05-S 6/10/2022 2.54 MB05-S 3/11/2022 2.53 MB05-S 6/12/2022 2.14 MB05-S 31/01/2023 2.32 MB05-S 3/03/2023 3.32 MB05-S 13/04/2023 3.34 MB05-S 30/05/2023 3.11 MB05-S 28/06/2023 3.04 MB05-S 27/07/2023 2.99 MB05-S 31/08/2023 2.93 MB05-S 19/09/2023 3.01 MB05-S 19/10/2023 3.04 MB05-S 23/11/2023 3.27 MB05-S 19/12/2023 3.08 MB05-S 23/01/2024 2.6 MB05-S 22/02/2024 2.36 MB05-S 20/03/2024 2.81 MB05-S 29/04/2024 2.87 MB05-S 20/05/2024 2.94 MB05-S 11/06/2024 3 MB05-S 25/07/2024 2.95 MB05-S 21/08/2024 2.33 MB05-S 18/09/2024 2.36 MB05-D 31/08/2022 3.34 MB05-D 6/10/2022 2.55 MB05-D 3/11/2022 2.68 MB05-D 6/12/2022 2.39 MB05-D 31/01/2023 2.33 MB05-D 3/03/2023 3.44 MB05-D 13/04/2023 2.98 MB05-D 30/05/2023 3.27 MB05-D 28/06/2023 3.36 MB05-D 27/07/2023 3.41 MB05-D 31/08/2023 3.49 MB05-D 19/09/2023 3.52 MB05-D 19/10/2023 3.48 MB05-D 23/11/2023 3.34 MB05-D 19/12/2023 3.47 MB05-D 23/01/2024 3.2 MB05-D 22/02/2024 3.54 MB05-D 20/03/2024 3.47 MB05-D 29/04/2024 3.59 MB05-D 20/05/2024 3.6 MB05-D 11/06/2024 3.6 MB05-D 25/07/2024 3.55 MB05-D 21/08/2024 3.54 MB05-D 18/09/2024 3.56

786

107 142 109 330 152 97.7 73.6 78.4 83.2 95 95.3 84.1 73.6 87.3 154 208 95.3 76 73.8 73.7 77.9 188 158 97.1 138 69.5 180 164 96.8 66.6 104 104 111 103 71 113 108 103 110 100 87.2 88.8 102 98.1 98.7 103 80.4 88.1

90.8 118 87.2 103 92.1 124 123 128 29 90 122 129 136 128 140 107 112 99.3 127 111 128 116

1090

<0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 <0.004 - - <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 <0.004 <0.004 <0.020 <0.004 <0.004 -

806

2470 1200 629 728 537 611 602 795 733 683 655 654 818 575 639 662 663 1310 1860 2100 1440

12.3 5.37 2.23 2.58 2.38 2.53 2.66 2.77 2.66 2.55 2.56 2.76 5.86 7.06 2.74 2.49 2.42 2.47 2.53 7.58 6.13 2.57 4.71 6.24 5.66 2.27 2.44 2.1

31.4 9.07 23.9 26.4 22.3 23.7 25.3 26.6 22.8 25.8 26.2 25.1 20.1 25.9 22.2 21.9 26 23.6 23.5 24.5 27.1 15.7 28.1 26 24.2 22.4 25.9 26.2 29.1 26.9 29.9 28.1 23 13 28.8 29.2 25.4 23.3 24.7 24.2 25.5 22 25.9 21.1 22.8

0.208 0.214 0.209 0.22 0.212 0.203 0.208 0.211 0.162 0.16 0.191 0.179 0.188 0.191 0.187 0.158

0.002 0.005 0.02 0.006

0.169 0.222 0.21 0.121 0.198 0.0896 0.198 0.219

<0.005 <0.010 <0.005 <0.001 <0.005 <0.001 <0.005 <0.005 <0.001 <0.001 0.001 0.002 <0.005 0.003 <0.010 0.004 0.002 0.006 <0.010 0.004

109

679

1100

117 56.4 93.1 43.7 91.5 119 97.2 115 108 114 115 108 118 106 97 94.1 102 91.2 104 98.2 78.9 94.3 82

568

1460 1270

639 445 771 821 938 848 977 934 858 792 952 716 760 793 900 821 534 793

0.206 0.199 0.198 0.203 0.205 0.191 0.195 0.191 0.161 0.166 0.167 0.159 0.169 0.171 0.169 0.156 0.155

2.4

2.52

2.65 2.88 2.94 2.79 2.93 2.62 2.24 2.35 2.57 2.45 2.51 2.61 2.18 2.35

1140

0.004 0.003 0.004 0.005 0.009

0.02 0.02 0.03

0.6