Summary of questions: Concerns around maintaining the quality of the water sources surrounding the communities, including the lakes, rivers, and water tables. Maintaining the quality of drinking water. Protection of all the surrounding wetlands. Control of run-off water and over-flowing of rainwater and ice-melt. Use of water on the site, during construction, and operations.
The preservation of our water resources is a key value for us. We understand the importance of preserving our water resources, and monitoring impacts on the water as an industrial project. We are committed to undertaking all required studies to ensure we protect all of the area’s water resources, including lakes, rivers, wetlands, and water tables, without exception, and for the duration of the project lifecycle including exploration, development, construction, operations, closure and reclamation.
We are keen to develop and study a full closed loop water treatment system: The water management efforts currently being proposed include the recycling of plant water within the process plant footprint. This water doesn’t have contact with the environment as it is never released, thus it is said to be in a “closed loop” but may need to be “topped up” on occasion as some water is lost over time due to evaporation and some is tied up in our filtered tailings. This “make-up” water is pumped from water collection ponds to the process plant.
The water collection ponds will not receive process water; they receive water that is pumped from pit bottoms (groundwater from pit walls) and/or precipitation. This is called contact water and it is discharged to the environment once meeting specifications for suspended solids and other possible contaminants. Lomiko has included in its capital and operating costs, a water treatment plant should further test work indicate that treatment is necessary.
Lastly, the project manages “non-contact” water which is water that is directed away from entering the site through a series of ditches.
We are also looking at a predictive water quality model that will be implemented at the Environmental Impact Assessment (”EIA“) stage to ensure that the Project does not affect surrounding water quality. Moreover, there will be a groundwater model as well, to ensure that groundwater quantity and quality surrounding the project is not affected. A site water balance will ultimately be developed.
The models will also look to potential contributions, if any, from the waste co-disposal facility (CDSF). The co-disposal waste facility will contain limited water. The contact water (run-off from the CDSF) will report to water collection ponds where it will be treated (if needed) prior to release.
As an example, and consistent with innovative mining projects, the La Loutre project will not have any conventional tailings storage facilities. We have developed an environmentally focused solution in a co-disposal waste system for both mill tailings and mine waste rock. For more information on these systems please visit:
This approach, though more costly for Lomiko from an operating perspective, will minimize the project footprint and reduce the risks of any mine waste making it’s way to the surrounding water bodies or environment.
For more information on the protection and maintenance of the wetlands: “directive 019” in Québec details the design parameters for waste and contact water collection pond: https://www.environnement.gouv.qc.ca/milieu_ind/directive019/.
Mine closure and reclamation is very important. Our team has direct experience in managing these projects and we will make sure that all stakeholders will be consulted and invited to participate in determining the post-closure land use that would be appropriate for their needs. Finally, as part of the closure and reclamation plan that will be produced, a final concept will be developed that will strive to provide a closure and reclamation land use comparable to the initial use.
For more information and examples of closed and reclaimed mines some examples are found here:
Please see: https://www.edenproject.com/
Also see: https://www.youtube.com/watch?v=T6V2bKPNqOI
Further details for the water management for the Project can also be located at sections 18.7.1 and 20.2 of the PEA available here: