Original EA Amendment

Appendix C - Exceedance Graphs

Heritage Minerals MMM EA Compliance Review

MB04-D (Electrical Conductivity @ 25°C)

MB05-D (Electrical Conductivity @ 25°C)

10000 12000 14000 16000 18000 20000

10000 15000 20000 25000 30000

0 2000 4000 6000 8000

0 5000

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

MB04-D WQO

MB05-D WQO

MB05-S (Electrical Conductivity @ 25°C)

MB07-D (Electrical Conductivity @ 25°C)

10000 12000 14000 16000 18000 20000

10000 15000 20000 25000 30000

0 2000 4000 6000 8000

0 5000

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-S

WQO

MB07-D WQO

MB08-D (Electrical Conductivity @ 25°C)

MB09 (Electrical Conductivity @ 25°C)

10000 12000 14000 16000 18000 20000

10000 12000 14000 16000 18000 20000

0 2000 4000 6000 8000

0 2000 4000 6000 8000

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

MB08-D WQO

MB09

WQO

MB11 (Electrical Conductivity @ 25°C)

MB14 (Electrical Conductivity @ 25°C)

10000 12000 14000 16000 18000 20000

10000 12000 14000 16000 18000 20000

0 2000 4000 6000 8000

0 2000 4000 6000 8000

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

MB11

WQO

MB14

WQO

MB02 (Total Dissolved Solids @180°C)

MB04-D (Total Dissolved Solids @180°C)

10000 15000 20000 25000 30000 35000 40000 45000 50000

10000 15000 20000 25000 30000

0 5000

0 5000

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

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