This consultation closes at 11:59 p.m. on:
April 9, 2026
Proposal summary
This proposal is for an amendment to the Environmental Compliance Approval (ECA) No. 0735-C9PMD6 for various water management ponds and collection ditches serving Greenstone Gold Mines Tailings Management Facilities located at 7921 Highway 11, in Geraldton, Municipality of Greenstone, District of Thunder Bay, Ontario.
Location details
Site address
7921 Highway 11
Geraldton
Municipality of Greenstone,
ON
Canada
Site location details
7921 Hwy 11, Greenstone, Ontario, P0T 1M0, Canada
Site location map
The location pin reflects the approximate area where environmental activity is taking place.
View this location on a map opens link in a new windowProponent(s)
Greenstone Gold Mines GP Inc.
7921 Highway 11
Geraldton,
ON
P0T 1M0
Canada
Proposal details
This proposal is for an amendment to the Environmental Compliance Approval (ECA) No. 0735-C9PMD6 for various water management ponds and collection ditches serving Greenstone Gold Mines Tailings Management Facilities located at 7921 Highway 11, in Geraldton, Municipality of Greenstone, District of Thunder Bay, Ontario.
Due to the topography of the area, there is a large additional area outside of the Waste Rock Storage Area (WRSA) D that would be directed to the contact water ditch if a non-contact water diversion berm and channel was not in place. The diversion berm and channel are designed to direct non-contact water away from ditch D2-A and Pond D2.
The purpose of this application is to amend the ECA No. 0735-C9PMD6 to permit a non-contact water diversion berm and channel along the perimeter of ditch D2-A and Pond D2. There is no change to the WRSA seepage water collection or conveyance to Effluent Treatment Plant for treatment and discharge.
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135 St Clair Ave West
1st Floor
Toronto,
ON
M4V 1P5
Canada
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Client Services and Permissions Branch
135 St Clair Ave West
1st Floor
Toronto,
ON
M4V 1P5
Canada
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Contact
Client Services and Permissions Branch
135 St Clair Ave West
1st Floor
Toronto, ON
M4V 1P5
Canada