Original EA Amendment

Appendix D - Mann-Kendall Charts Identified Increasing Trends

Heritage Minerals MMM EA Compliance Review

Lead [MB02]

Copper [MB04-D]

0 0.002 0.004 0.006 0.008 0.01 0.012 0.014

100 120 140

0 20 40 60 80

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

Lead

Copper

0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Lead [MB05-D] Lead

0 0.5 1 1.5 2 2.5 3 3.5 4 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 pH Value [MB05-D] pH Value

Lead [MB05-S]

Manganese [MB05-S]

0.025

100 120 140 160

0.02

0.015

0 20 40 60 80

0.01

0.005

0

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

Lead

Manganese

0 0.2 0.4 0.6 0.8 1 1.2 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Nickel [MB05-S] Nickel 0 0.02 0.04 0.06 0.08 0.1 0.12 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Chromium [MB07-D] Chromium

Aluminium [MB07-D]

1000 1500 2000 2500 3000 3500 4000

0 500

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

Aluminium

Copper [MB07-D]

10 15 20 25 30 35 40 45 50

0 5

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

Copper

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