Original 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 11,700 12,200 10,300 11,700 10,200 10,800 10,400 10,400 9,130 10,100 10,300 10,200 9,300 9,370 9,600 11,900 12,600 10,900 11,600 11,200 10,900 10,800 12,600 11,400 19,700 11,600 22,000 18,300 14,600 3,770

1,797 19,600 18,800 13,400 17,900 14,900 16,100 16,600 15,300 14,400 14,800 13,800 14,600 13,500 13,600 14,600 20,400 18,800 16,400 16,000 15,600 15,400 16,500 20,800 15,900 44,200 19,900 47,600 37,100 29,300 5,560

0.055 799 838 0.03 758 638 681 601 601 567 523 612 605 530 495 481 757 784 665 653 677 668 606 868 628 1940 1880 1530 2010 28.3 835

0.013 0.033 0.014 <0.001 0.034 0.014 0.016 0.017

0.0002 0.0958 0.0893 0.0037 0.0757 0.0829 0.0779 0.0796 0.0758 0.0759 0.0641 0.0625 0.065 0.0655 0.0565 0.0519 0.0735 0.0749 0.0714 0.0719 0.0736 0.0666 0.0681 0.0916 0.0762 0.605 0.22 0.574 0.458 0.157 0.145

0.001 0.039 0.037 <0.001 0.038 0.029 0.031 0.028

0.001 1.72 1.54 0.039

0.0014

0.0034 <0.010 <0.005 <0.001 <0.001 <0.001 <0.005 <0.005 <0.001 0.001 <0.001 <0.001 <0.005 <0.001 <0.001 <0.001 0.007 0.013 <0.010 0.004

1.9

0.011

0.011 <0.10 <0.05 <0.01 <0.05 <0.05 0.02 0.02 0.04 0.02 <0.05 0.05 0.04 0.03 <0.10 0.03 0.02 0.03 0.03 0.03 0.03 0.03

0.008 18.2 17.9 0.368 16.8

0.007

MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02 MB02

31/08/2022 2.25 6/10/2022 2.36 3/11/2022 7.41 6/12/2022 2.22 31/01/2023 2.42 3/03/2023 2.42 13/04/2023 2.32 30/05/2023 2.4 28/06/2023 2.48 27/07/2023 2.49 31/08/2023 2.43 19/09/2023 2.51 19/10/2023 2.52 23/11/2023 2.55 19/12/2023 2.5 23/01/2024 2.33 22/02/2024 2.3 20/03/2024 2.29 29/04/2024 2.28 20/05/2024 2.33 11/06/2024 2.39 25/07/2024 2.38 21/08/2024 2.18 18/09/2024 2.3

57.4 61.5 40.9 49.6 53.6 47.8 22 56.7 53.1 48.7 50.5 58.6 53.4 48.8 50.8 57.7 52.5 53.2 49.4 49 48.6 51.4 50.9 297 109 287 233 122 51 82.4

0.7 0.6

42.5 1.17 47.1 39.2 32.2 38.3 38.1 29.4 26.8 33 26.1 34.8 24.8 23.6 44.9 33.6 36.8 33.7 46 29.5 27.2 45.8

<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 - -

0.018 0.516 0.493 0.51 0.517 0.479 0.454 0.472 0.446 0.5 0.412 0.389 0.39 0.608 0.757 0.655 0.586 0.581 0.533 0.481 0.695 0.515 0.639 2.29 1.83 0.925 2.5 0.544

1.43 1.24 1.36 1.27 1.27 1.18 1.08 1.18 1.07 1.1

15.4 15.6 15.1 14.1 13.2 12.8 13.5 12.4 11.7 15.7 14.5 14.2 14.1 13.3 13.3 16.7 11 15 14.3 95.9 27.9 98.2 75.3

0.016 0.01 0.013 0.01 0.012 0.011 0.012 0.009 0.019 0.02 0.017 0.025 0.017 0.024 0.014 0.06 0.015 0.118 0.012 0.099 0.067 0.029 0.006

0.032 0.022 0.023 0.036 0.022 0.018 0.017 0.02 0.042 0.052 0.061 0.032 0.032 0.029 0.025 0.05 0.025 0.142 0.037 0.141 0.135 0.092 0.006

0.933 0.924 1.48 1.62

1.26 1.28 1.23 1.13 1.53 1.23 7.62 1.1 7.02 5.54 3.75 3.1

0.002 0.003 0.002 0.004

0.02 0.05 0.03

0.004 <0.020 <0.005 <0.020 <0.005 <0.001 0.002

MB04-D 31/08/2022 3.62 MB04-D 6/10/2022 2.8 MB04-D 3/11/2022 3.63 MB04-D 6/12/2022 3.65 MB04-D 31/01/2023 3.3 MB04-D 3/03/2023 3.67 MB04-D 13/04/2023 - MB04-D 30/05/2023 - MB04-D 28/06/2023 - MB04-D 27/07/2023 - MB04-D 31/08/2023 - MB04-D 19/09/2023 - MB04-D 19/10/2023 - MB04-D 23/11/2023 - MB04-D 19/12/2023 - MB04-D 23/01/2024 - MB04-D 22/02/2024 - MB04-D 20/03/2024 - MB04-D 29/04/2024 - MB04-D 20/05/2024 - MB04-D 11/06/2024 - MB04-D 25/07/2024 - MB04-D 21/08/2024 - MB04-D 18/09/2024 -

0.268

<0.20 <0.05 <0.20

108

0.575 2.02 25.9

0.3

0.03 0.03

1.8

126

19.5

- - - - - - - - - - - - - - - - - -