Update Announcement
This proposal notice has been updated on February 05, 2026, to advise the public that this application is still under active review. The ministry reference number has been changed from 1000208487 to 0120-DE3R9P.
Cette consultation a eu lieu :
du 4 juillet 2024
au 18 août 2024
Résumé de la décision
An amendment Environmental Compliance Approval (ECA) has been granted to Greenstone Gold Mines GP Inc. to amend existing ECAs No. 0735-C9PMD6 issued on April 25, 2022, and No. 5375-DQ9KZ8 issued on January 21, 2026, to facilitate the operations phase of the Greenstone Gold Mine located at 7921 Highway 11, Geraldton, Municipality of Greenstone.
Détails de l'emplacement
Adresse du site
135 Hardrock Road
Geraldton,
ON
Canada
Détails de l'emplacement du site
Greenstone Mine
Carte de l'emplacement du site
L'épingle de localisation correspond à la zone approximative où a lieu l’activité environnementale.
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Greenstone Gold Mines GP Inc.
8000 Highway 11
Geraldton,
ON
P0T 1M0
Canada
Détails de la décision
An amendment Environmental Compliance Approval (ECA) has been granted to Greenstone Gold Mines GP Inc. to amend existing ECAs No. 0735-C9PMD6 issued on April 25, 2022, and No. 5375-DQ9KZ8 issued on January 21, 2026, to facilitate the operations phase of the Greenstone Gold Mine located at 7921 Highway 11, Geraldton, Municipality of Greenstone, District of Thunder Bay.
The approved new works mainly include the following:
- operation of effluent pipelines
- construction and operation of tailings reclaim/discharge lines
- addition of seepage collection pond T2, which will consequently be converted to a pump-back system, as construction of downstream toe berm/buttress through the placement of fill material is required for the West Dam
- operations of the TMF with approved starter dams and then raising the TMF dams to a crest elevation of 347 m (Stage 2), with no effluent from the TMF or process plant discharging to land or to any surface water feature, nor conveyed to the Effluent Treatment Plant (ETP) for discharge into the Kenogamisis Lake
- modify the Works description to reflect the ultimate TMF dam crest elevation of 365 metres; and
- realigning and extension of the southeast seepage collection ditch by a total length of approximately 1,945 metres, with grades ranging from 0.1% to 0.6% along the Southeast and East dams, discharging to existing Pond T1.
Phosphorus has been historically elevated in Kenogamisis Lake and above the Provincial Water Quality Objectives for the protection of aquatic life in certain locations in the lake. GGM has implemented the best available phosphorus treatment technology, but the proposal will increase the load of phosphorus to Kenogamisis Lake as a result of the project discharges. To address concerns with this proposal, GGM will implement an enhanced monitoring program to evaluate the risk of their discharges and to assess potential changes to phosphorus concentrations in Kenogamisis Lake.
GGM will report to the Ministry of the Environment, Conservation and Parks and sample any cyanobacteria (blue-green algae) blooms observed during routine sampling events throughout Kenogamisis Lake to ensure risks due to these events are communicated to users within the broader watershed.
Effets de la consultation
No comments were received.
Documents justificatifs
Consulter les documents en personne
Certains documents justificatifs peuvent ne pas être accessibles en ligne. Si tel est le cas, vous pouvez demander à consulter les documents en personne.
Veuillez communiquer avec le bureau mentionné ci-dessous pour savoir si les documents sont accessibles.
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
How to Appeal
Cet avis de décision peut être porté en appel. Vous avez jusqu’à 15 jours à partir du 27 août 2026 pour entamer le processus d’appel.
Veuillez lire les renseignements suivants attentivement pour en savoir plus sur le processus d’appel.
Comment interjeter appelClick to Expand Accordion
Start the process to appeal
If you’re an Ontario resident, you can start the process to appeal this instrument decision.
First, you’ll need to seek leave (i.e. get permission) from the relevant appellate body to appeal the decision.
If the appellate body grants leave, the appeal itself will follow.
Seek leave to appeal
To seek leave to appeal, you need to do these three things:
- prepare your application
- provide notice to the minister
- mail your application to three parties
1. Prepare your application
You’ll need to prepare an application. You may wish to include the following things in your application:
- A document that includes:
- your name, phone number, fax number (if any), and/or email address
- the ERO number and ministry reference number (located on this page)
- a statement about whether you are a resident in Ontario
- your interest in the decision, and any facts you want taken into account in deciding whether you have an interest in the decision
- the parts of the instrument that you’re challenging
- whether the decision could result in significant harm to the environment
- the reason(s) why you believe that no reasonable person – having regard to the relevant law and to any government policies developed to guide decisions of that kind – could have made the decision
- the grounds (facts) you’ll be using to appeal
- the outcome you’d like to see
- A copy of the instrument (approval, permit, order) that you you are seeking leave to appeal. You’ll find this in the decision notice on the Environmental Registry
- Copies of all supporting documents, facts and evidence that you’ll be using to appeal
What is considered
The appeal body will consider the following two questions in deciding whether to grant you leave to appeal:
- is there is good reason to believe that no reasonable person, with respect to the relevant law and to any government policies developed to guide decisions of that kind, could have made the decision?
- could the decision you wish to appeal result in significant harm to the environment?
2. Provide your notice
You’ll need to provide notice to the Minister of the Environment, Conservation and Parks that you’re seeking leave to appeal.
In your notice, please include a brief description of the:
- decision that you wish to appeal
- grounds for granting leave to appeal
You can provide notice by email at minister.mecp@ontario.ca or by mail at:
College Park 5th Floor, 777 Bay St.
Toronto, ON
M7A 2J3
3. Mail your application
You’ll need to mail your application that you prepared in step #1 to each of these three parties:
- appellate body
- issuing authority (the ministry official who issued the instrument)
- proponent (the company or individual to whom the instrument was issued)
Greenstone Gold Mines GP Inc.
8000 Highway 11
Geraldton,
ON
P0T 1M0
Canada
Registrar, Ontario Land Tribunal
655 Bay Street, Suite 1500
Toronto, Ontario
M5G 1E5
(416) 212-6349
(866) 448-2248
OLT.Registrar@ontario.ca
Inclure les éléments suivants:
Il ne s'agit pas d'un avis juridique. Veuillez vous reporter à la Charte des droits environnementaux de 1993 pour connaître les exigences exactes prévues par la loi. Consultez un avocat si vous avez besoin d'aide avec le processus d'appel.
Communiquer avec nous
Contact
Client Services and Permissions Branch
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
Proposition initiale
Détails de la proposition
Greenstone Gold Mine (GGM) is proposing to amend the Environmental Compliance Approval (ECA) No. 0735-C9PMD6 to facilitate the operations phase of a new open pit gold mine located in northwestern Ontario, approximately 275 kilometres northeast of Thunder Bay, in the Municipality of Greenstone, Ward of Geraldton.
GGM is proposing to amend the ECA to include the following in the approval for mine operations:
- Inclusion in the ECA description of works the on-land portion of the effluent pipeline.
- Construction and operation of emergency pond and ditch associated with the reclaim lines and tailings, discharge line, and addition of emergency pond and ditch in the description of the ECA works.
- Construction and operation of a tailings reclaim line extending from the Tailings Management Facility (TMF) to the processing plant, and addition of a tailings reclaim line in the description of the ECA works.
- Construction and operation of a tailings discharge line extending form the processing plant to the TMF, and the addition of a tailings discharge line in the description of the ECA works.
- Construction and operation of TMF seepage collection pond T2, with recirculation of seepage to the TMF, and addition of the description of the proposed works to the ECA.
- Historical tailings water management during relocation of historical tailings, which required direction of water via gravity drainage and pumping to the open pit, and the to the full-scale Effluent Treatment Plant (ETP).
- A proposed oil water separator and water treatment system associated with the truck wash bay that will clean and recirculate water for the same use.
- Consolidation of the sewage works approved under ECA No. 7554-D4EPL5.
- Modify the Works Description to reflect the full height of the TMF dams.
- Modify the Works Description to reflect the planned mill throughput of 10,900,000 tonnes per year.
Phosphorus has been historically elevated in Kenogamisis Lake and above the Provincial Water Quality Objectives for the protection of aquatic life in certain locations in the lake. GGM has implemented the best available phosphorus treatment technology, but the proposal will increase the load of phosphorus to Kenogamisis Lake as a result of the project discharges. To address concerns with this proposal, GGM will implement an enhanced monitoring program to evaluate the risk of their discharges and to assess potential changes to phosphorus concentrations in Kenogamisis Lake.
GGM will report to the Ministry of the Environment, Conservation and Parks and sample any cyanobacteria (blue-green algae) blooms observed during routine sampling events throughout Kenogamisis Lake to ensure risks due to these events are communicated to users within the broader watershed.
Documents justificatifs
Consulter les documents en personne
Certains documents justificatifs peuvent ne pas être accessibles en ligne. Si tel est le cas, vous pouvez demander à consulter les documents en personne.
Veuillez communiquer avec le bureau mentionné ci-dessous pour savoir si les documents sont accessibles.
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
Commentaire
La consultation est maintenant terminée.
Cette consultation a eu lieu 4 juillet 2024
au 18 août 2024
Communiquer avec nous
Contact
Client Services and Permissions Branch
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
Commentaires reçus
Par l'entremise du registre
0Par courriel
0Par la poste
0