Original EA Amendment

Appendix D - Mann-Kendall Charts Identified Increasing Trends

Heritage Minerals MMM EA Compliance Review

Electrical Conductivity @ 25°C [MB11]

0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Chromium [MB11] Chromium

10000 12000 14000 16000

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

Electrical Conductivity @ 25°C

0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 Lead [MB14] Lead

Lead [MB11]

0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016

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

Lead

0 1 2 3 4 5 6 08/22 11/22 01/23 04/23 06/23 09/23 11/23 02/24 04/24 07/24 09/24 pH Value [MB14] pH Value

page 3 of 5

Powered by