Original EA Amendment

Heritage Minerals MMM EA Compliance Review

Appendix C - Exceedance Graphs

0 10 20 30 40 50 60 70 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB02 (Manganese) MB02 WQO

MB04-D (Manganese)

100 150 200 250 300

0 50

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

MB04-D WQO

MB05-D (Manganese)

MB05-S (Manganese)

100 120 140 160 180 200

100 120 140 160 180 200

0 20 40 60 80

0 20 40 60 80

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 (Manganese)

0 10 20 30 40 50 60 70 80 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB08-D (Manganese) MB08-D WQO

100 120 140 160 180 200

0 20 40 60 80

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

MB07-D WQO

0 1 2 3 4 5 6 7 8 Jul-22 Oct-22 Jan-23 Apr-23 Jul-23 Oct-23 Jan-24 Apr-24 Jul-24 Oct-24 MB09 (Manganese) MB09 WQO

MB11 (Manganese)

100 150 200 250 300 350 400

0 50

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

MB11

WQO

MB14 (Manganese)

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 MB02 (Nickel) MB02 WQO

100 150 200 250 300

0 50

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

MB14

WQO

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