Environmental Impact Statement


The Environmental Assessment (EA) for the Rook I Project (Project) evaluates the potential environmental effects associated with all Project activities during all phases.

An Environmental Impact Statement (EIS), which contains the Project EA, has been developed by NexGen and represents a culmination of more than 8 years of detailed data collection and analysis incorporating all Project technical, environmental, and social aspects. A draft EIS was submitted to the provincial and federal regulators in 2022, with provincial technical review comments and federal technical and public review comments received by NexGen in Q4 2022.

NexGen has been working with Indigenous Groups throughout the EA process to ensure Indigenous and Local Knowledge was incorporated into the EIS.

Following conclusion of the provincial technical review process in Q3 2023, NexGen submitted a revised EIS to the provincial regulator – the Saskatchewan Ministry of Environment (“ENV”) – which underwent public review between September 2, 2023, and October 2023. On November 9, 2023, NexGen received Ministerial approval under The Environmental Assessment Act of Saskatchewan to proceed with the development of the Rook I Project. NexGen is the first company in more than 20 years to receive full provincial EA approval for a greenfield uranium project in Saskatchewan. This concludes the rigorous provincial Environmental Impact Assessment process and represents the major regulatory milestone ahead of full development of the Rook I Project. Receipt of the provincial EA approval enables the Company to progress with securing the necessary provincial and federal approvals to construct the Project.

NexGen has submitted responses to all federal technical review comments received on the draft EIS, which are currently under review by the federal regulator, the Canadian Nuclear Safety Commission (“CNSC”).

April 2019: Submission of EA Project Description to ENV and CNSC
May 2022: Submission of draft EIS to ENV and CNSC
September 2022: Receipt of provincial technical review comments on draft EIS
November 2022: Receipt of federal technical and public review comments on draft EIS
August 2023: Submission of provincial Final EIS to ENV
September 2023: Submission of federal technical review comment responses
October 2023: Conclusion of provincial public review on Final EIS
November 2023: Receipt of provincial EA approval

Environmental Impact Statement

The EIS represents the full collection of reports that document NexGen’s Environmental Assessment for the Rook I Project.

The EIS is composed of many different documents. Information is presented in multiple levels of detail to support different audiences in their reviews. Key documents comprising the EIS include:

  • Tables of concordance developed to assist in conformance reviews against each of the federal and provincial EA requirements for the Project;
  • Individual EIS sections providing:
    • Project, regulatory, Indigenous Group, and stakeholder context;
    • Technical methods and assessments;
    • Information about Project resilience;
    • EA summaries including residual Project and cumulative effects, mitigation, monitoring, and follow-up programs; and
    • EA conclusions;
  • Technical support documents including information that supports the analyses in EIS sections; and
  • Baseline reports describing the existing biophysical and socio-economic conditions.

A copy of the draft EIS for the Project can be found here

A copy of the provincial Final EIS for the Project can be found here


EIS Master Executive Summary

The Master Executive Summary provides a concise overview of the entire Environmental Impact Statement (EIS) with a summary of the purpose, methods, findings, and implications from the key sections of the EIS. The Master Executive Summary has been developed to provide a high-level understanding of the Project, its potential environmental and socio-economic effects, and planned mitigations.

A copy of the draft EIS Master Executive Summary for the Project can be found here.

A copy of the provincial Final EIS Master Executive Summary for the Project can be found here.