Original EA Amendment

Heritage Minerals MMM EA Compliance Review

Appendix C - Exceedance Graphs

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB11 (Cobalt) MB11 WQO

0 0.5 1 1.5 2 2.5 3 3.5 4 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB14 (Cobalt) MB14 WQO

MB02 (Copper)

MB04-D (Copper)

10 15 20 25 30 35 40 45 50

100 120 140 160 180 200

0 20 40 60 80

0 5

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

MB02

WQO

MB04-D WQO

MB05-D (Copper)

MB05-S (Copper)

100 120 140 160 180 200

100 150 200 250 300 350 400

0 20 40 60 80

0 50

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

MB05-D WQO

MB05-S

WQO

MB07-D (Copper)

MB08-D (Copper)

10 15 20 25 30 35 40 45 50

100 120 140 160 180 200

0 20 40 60 80

0 5

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

MB07-D WQO

MB08-D WQO

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB09 (Copper) MB09 WQO

MB11 (Copper)

10 12 14 16 18 20

0 2 4 6 8

Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24

MB11

WQO

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