Original EA Amendment

Appendix D - Mann-Kendall Charts Identified Increasing Trends

Heritage Minerals MMM EA Compliance Review

Electrical Conductivity @ 25°C [MB07-D]

Lead [MB07-D]

10000 12000 14000 16000 18000

0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018

0 2000 4000 6000 8000

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

Electrical Conductivity @ 25°C

Lead

Total Dissolved Solids @180°C [MB07-D]

Electrical Conductivity @ 25°C [MB08-D]

10000 15000 20000 25000 30000 35000 40000

10000 12000

0 2000 4000 6000 8000

0 5000

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

Total Dissolved Solids @180°C

Electrical Conductivity @ 25°C

Zinc [MB08-D]

0 0.1 0.2 0.3 0.4 0.5 0.6 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Nickel [MB08-D] Nickel

10 12 14 16 18 20

0 2 4 6 8

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

Zinc

Total Dissolved Solids @180°C [MB09]

Aluminium [MB11]

10000 12000 14000 16000

100 150 200 250 300 350

0 2000 4000 6000 8000

0 50

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

Total Dissolved Solids @180°C

Aluminium

Cadmium [MB11]

0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Arsenic [MB11] Arsenic

0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2

08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24

Cadmium

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