Rook I Project

NexGen Energy Ltd. (NexGen) is proposing to develop an underground uranium mine on the Patterson Lake peninsula in the southwestern Athabasca Basin in northern Saskatchewan, approximately 155 km north of the town of LaLoche, SK. The proposed Rook l mine would produce up to 14 million kg of U3O8 annually for twenty-four years.

Under the Nuclear Safety and Control Act, NexGen's proposal requires approval and licensing by the Canadian Nuclear Safety Commission (CNSC). An environmental assessment (EA) conducted under the Canadian Environmental Assessment Act, 2012 is required, and an EA decision affirming that the proposed activities will not cause significant adverse environmental effects, before the CNSC can make a licensing decision on this proposal.

This project is also subject to the environmental assessment requirements of the Government of Saskatchewan.


Disclaimer

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.


Latest update

July 14, 2022 - The Canadian Nuclear Safety Commission (CNSC) is seeking comments during a 90-day public comment period on the draft environmental impact statement (EIS), for the proposed Rook l Project submitted by the proponent, NexGen Energy Ltd (NexGen). The draft EIS and supporting documents can be accessed by visiting the Canadian Impact Assessment Registry for the Rook l Project.

The draft EIS provides an analysis of the project’s potential environmental effects and measures to mitigate those potential impacts.

The public comment period gives Indigenous nations and communities, members of the public, and government departments and agencies an opportunity to submit their views in writing to the CNSC on the adequacy of the information presented in the EIS, as measured against the Generic Guidelines for the Preparation of an Environmental Impact Statement pursuant to the Canadian Environmental Assessment Act, 2012 (the Guidelines), and on the technical merit of the information presented. The Guidelines provide direction to the proponent and identify the information that is required in the EIS.

Written comments must be submitted by October 12, 2022 to:

Nicole Frigault
Environmental Assessment Specialist
Email: rook1@cnsc-ccsn.gc.ca

All comments on the draft EIS will be posted on the Canadian Impact Assessment Registry in the language in which they were received.

 

June 16, 2022 - On June 13, 2022, NexGen Energy Ltd. submitted a draft environmental impact statement (EIS) for the proposed Rook I Project to the Canadian Nuclear Safety Commission (CNSC). CNSC staff are currently conducting a 30-day conformity review to ensure that sufficient information has been submitted in accordance with the CNSC Generic Guidelines for the Preparation of an Environmental Impact Statement. If the draft EIS is deemed sufficient, a 90-day technical and public review will commence in July 2022..
July 14, 2022 - A public participation period is underway.

Participate

Key documents

Key documents
Document Number Document Title File Date
19 Draft Environmental Impact Statement for the Rook I Project PDF (303.9 MB) June 13, 2022
18 Master Executive Summary - Draft Environmental Impact Statement for the Rook I Project PDF (25.8 MB) June 13, 2022

List all records

Contacts

Canadian Nuclear Safety Commission
Nicole Frigault, Environmental Assessment Specialist
Telephone: 613-995-7948
Email: rook1@cnsc-ccsn.gc.ca


  • Location

    • Patterson Lake (Saskatchewan)
  • Nature of Activity

    • Nuclear Energy
    • Mines and Minerals
  • Assessment Status

    In progress
  • Start Date

    2019-05-02
  • Proponent

    NexGen Energy Ltd.
  • Authorities

    • Canadian Nuclear Safety Commission
  • Assessment Type

    Environmental assessment under CEAA 2012
  • Reference Number

    80171

Nearby assessments

..within 200 kilometres
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