MLCN Montreal LK East Lagoon

Expansion of the existing East core sewage lagoon and decommissioning of the west core sewage lagoon. Existing 1.10ha primary lagoon cell being expanded with an additional 4.43ha primary lagoon cell. Existing 12,900 cu.m. primary lagoon cell being expanded with an additional 146,252 cu.m. lagoon storage cell. Approx. 5,750 lin.m. of new 150mm dia. DR17 sewage force main from SPS no.2 to the east lagoon. Approx. 500 lin.m. of new 200mm dia. PVC gravity sewer main from SPS no.1 to SPS no.2. The east lagoon expansion will consist of flagging of the existing forested area to indicate clearing extents, tree clearing within the extents marked by the Engineer, topsoil stripping, earthwork excavation/fill to construct the new lagoon cells, placement of 600mm thick compacted clay liner, topsoil replacement, seeding and erosion protection. New forcemain installation to convey sewage from the west core area to the east lagoon. Decommissioning of the existing west lagoon upon completion of the east lagoon expansion. Any construction waste generated from construction of the new lagoon, forcemain, sewage pumping stations will be transported to an off-site landfill by the Contractor.

Latest update

December 17, 2020 - Indigenous Services Canada issued its notice of determination and determined that the project is not likely to cause significant adverse environmental effects.



Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination for Montreal Lake East Lagoon - December 17, 2020
1 Public Comment Period on Intent to Make a Determination - October 13, 2020


Indigenous Services Canada
Alvin Hamilton Building, 1783 Hamilton Street
Regina, Saskatchewan S4P 2B6
Telephone: 306-581-3134

  • Location

    • Montreal Lake IR 106 (Saskatchewan)
  • Nature of Activity

    • Waste Management
  • Assessment Status

  • Start Date

  • Proponent

    Montreal Lake Cree Nation
  • Authorities

    • Indigenous Services Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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