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A letter from MLA McNeely to the Mackenzie Valley Review Board about the EA process.
This is a letter from PKFN and the GNWT to MVEIRB about an update to the route of the proposed MVH.
This is a letter from the GNWT to MVEIRB regarding engagement on the DAR addenda timeline. Due to technical issues, this letter was only received by MVEIRB on January 29, 2026.
The Review Board and GNWT met on December 19, 2025 to discuss the environmental assessment process.
This is a letter from the GNWT to ADKFN in response to ADKFN's August 15th letter (PR#399)
This note to file describes conversation between PKFN and MVEIRB staff on Dec. 16.
GNWT and MVEIRB met on November 5 to discuss the environmental assessment process.
A letter from the Review Board to the GNWT, requesting that the GNWT respond to the concerns raised about the GNWT's extension request.
Letter from Daniel McNeely (MLA, Sahtu) to Catherine Fairbairn (MVEIRB) about the GNWT's 10 month extension request.
Letter from Charles McNeely (SSI) to Catherine Fairbairn (MVEIRB) about the GNWT's 10 month extension request.
A notice of proceeding granting the GNWT's extension request to July 31, 2026 for submission of the DAR addendum.
Joint letter providing an update on engagement between the Government of the Northwest Territories and Pehdzéh Kı̨́ First Nation.
10 months extension request for submission of the Mackenzie Valley Highway Developer’s Assessment Report Addendum.
This note to file describes a meeting between Review Board staff and CANNOR and GNWT PAB staff to discuss recent confidential information submissions.
Public summary of the confidential Indigenous Knowledge document submitted by Łı́ı́dlı̨ı̨ Kų́ę́ First Nation.
Parties can view Łı́ı́dlı̨ı̨ Kų́ę́ First Nation's Confidential Information via an agreement with the Review Board. A non-confidential summary of the Confidential Information is on the public registry.
A letter from Acho Dene Koe First Nation to the GNWT about the mitigation options summary table.
A report describing the results of a community survey completed in June 2025 by the Fort Norman Metis Community on behalf of the Tulita MVH Working Group.
A notice of proceeding granting the GNWT's extension request.
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
Note: MVEIRB IRs 50, 51, and 58 will be answered in the DAR addendum. The GNWT is not responsible for MVEIRB IR 23. MVEIRB IRs 41-49 were directed to parties who were not legally required to answer.
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
Note: MVEIRB IRs 50, 51, and 58 will be answered in the DAR addendum. The GNWT is not responsible for MVEIRB IR 23. MVEIRB IRs 41-49 were directed to parties who were not legally required to answer.
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
The developer (GNWT) answered all information requests from Round 2 on June 16, 2025.
Most answers are in the table titled 'Reviewer Comments and Proponent Responses - June 16 2025' (PR390).
Answers/Attachments are also posted on the registry under the following names:
- IR responses to CanNor IRs 1-12 (PR366, posted in April)
- IR responses to LKFN 1-49 (PR367, posted in April)
- IR responses to LKFN 44 – maps (PR368, posted in April)
- IR responses to PKFN IRs 1-8 (PR369, posted in April)
And
- IR responses to DRCC 1-3 (PR391)
- IR responses to GTC 1-14 (PR392)
- IR responses to SRRB IR 1-3 (PR393)
- IR responses to MVEIRB 11-34 (PR394)
- Attachments - answers to MVEIRB IRs 35-40 (PR335, posted in February)
- IR responses to MVEIRB 52-65 (PR395)
The GNWT requests an extension to submit the DAR addendum in October 2025.
Public summaries of confidential Indigenous Knowledge documents submitted by the Pehdzéh Kı̨́ First Nation. The three documents are:
- “Some PKFN Land Use and Occupancy along MVH Winter Road Route in the Dehcho”
- “Some PKFN Indigenous Knowledge about MVH Watercrossing Areas in the Dehcho”
- “Some PKFN Moose and Caribou Harvesting along MVH Winter Road Route in the Dehcho”.
Parties can view Pehdzeh Ki First Nations Confidential Information via an agreement with the Review Board. Non-confidential summaries of the Confidential Information are on the public registry.
Letter with the Review Board's decision on Łı́ı́dlı̨ı̨ Kų́ę́ First Nation's Request for Ruling to accept confidential Indigenous Traditional Knowledge.
In response to the Mackenzie Valley Environmental Impact Review Board’s (the Review Board) January 23, 2025, ‘Directive to the GNWT to provide and analyse mitigation for the Mackenzie Valley Highway Project, Government of the Northwest Territories’ (PR318), which instructed the GNWT to “...clearly describe options for mitigating impacts…”, GNWT provided the Supplemental filing; Socio-Economic (Table 1) and Biophysical (Table 2) Mitigation Tables for the Mackenzie Valley Highway Project (EA1213-02).
Notification of Upcoming Extension Request for the DAR Addendum
Meeting with developer about DAR Addendum and EA timelines
Correspondence: PKFN to MVEIRB: Updates Concerns
The Mackenzie Valley Environmental Impact Review Board (Review Board) held a community session in Rádeyı̨lı̨ Kǫ́ (Fort Good Hope) on April 9, 2025. This report summarizes the discussion from this session. A draft was posted in early May for parties to comment on; this is the final version.
PKFN respects LKFN’s right and responsibilities to protect sensitive Dene knowledge, and understands the importance of providing information for the Review Board’s consideration
Letter from Enbridge supporting PKFN's Proposed Alternative Realignment.
The Review Board received a request for ruling to accept confidential Traditional Indigenous Knowledge from Liidlii Kue First Nation. Parties have until May 23 to provide any comments for the Review Board to consider when making its decision.
Liidlii Kue First Nation's Request for Ruling to accept confidential Indigenous Knowledge in written form.
Comments on Proposed Realignment of MVH from Wrigley to Blackwater.
Link to Review Board Youtube Channel. Also provided in the Fort Good Hope Community Session Draft Report
The Mackenzie Valley Environmental Impact Review Board (Review Board) held a community session in Rádeyı̨lı̨ Kǫ́ (Fort Good Hope) on April 9, 2025. Review Board staff prepared a draft community session report summarizing comments Fort Good Hope community members shared about the proposed Mackenzie Valley Highway Project.
Parties have until May 16, 2025, to comment on the draft community session report and let the Review Board know if any changes should be made.
The Mackenzie Valley Environmental Impact Review Board (Review Board) held a community session in Rádeyı̨lı̨ Kǫ́ (Fort Good Hope) on April 9, 2025. This report summarizes the discussion from this session.
Information from PKFN on moose and caribou: Indigenous Knowledge, concerns, and recommendations.
Land management information from PKFN:
- response to MVEIRB IR 44
- response to MVEIRB IR 49
- response to technical session request
- map of areas to protect
IR round 2: GNWT responses to PKFN IRs 1-8. The responses can also be accessed on the Online Review System.
IR round 2: GNWT responses to LKFN 44 (additional maps). The responses can also be accessed on the Online Review System.
IR round 2: GNWT responses to LKFN 1-49. The responses can also be accessed on the Online Review System.
IR round 2: GNWT responses to CanNor IRs 1-12. The responses can also be accessed on the Online Review System.
Email attachment - LKFN comments to GNWT IR responses, in the Online Review System Table
LKFN comments to GNWT IR responses posted on the Online Review System.
PKFN suggests it would be helpful for parties to know what GNWT plans to do during the two-month extension.
A notice of proceeding granting the GNWT's extension request.
The Review Board's decision on PKFNs request for the Review Board to accept confidential TK information.
Note to file giving notice about recent Board Member appointments
Letter from GNWT to MVEIRB requesting a 2 month extension to submit the DAR Addendum and the remaining IR responses.
Notice of Proceeding from the Review Board indicating that the Board will retain former Board member Brenda Gauthier as a special advisor for this environmental assessment.
Note to file describing when the Review Board will release more information about the timeline, workplan, and public hearing phase of the MVH EA.
Agenda and Zoom link for the Fort Good Hope community session taking place on April 9, 2025.
See the Notice of Proceeding - MVH Community Session in Fort Good Hope (PR349) for more information.
Letter from NPMO to the Review Board asking for clarification on the upcoming procedural matters for MVH.
Letter from the Review Board to TG asking about lessons learned from the Tłı̨chǫ Highway.
GNWT Response to MVEIRB Directive: 'Directives to provide timely responses and a concordance table in the DAR Addendum’ (PR347)
DGG email re PKFN request for ruling. Todd Slack sent the email. DGG has no comment on the Request for Ruling.
GTC response to PKFN Request for Ruling. GTC has no concerns with the request.
Notice of Proceeding - MVH Community Session in Fort Good Hope on April 9, 2025.
PR348 GNWT Response to MVEIRB Notice of Proceeding regarding Pehdzeh Ki First Nation’s Request for Ruling to have the Review Board accept their confidential Indigenous Knowledge in written form. The Government of the Northwest Territories has no issue with the Request for Ruling.
Letter from the Review Board to GNWT with two directives regarding IR timelines and the DAR addendum.
The Review Board received a request for ruling to accept confidential Traditional Indigenous Knowledge from Pehdzeh Ki First Nation. Parties have until March 31 to provide any comments for the Review Board to consider when making its decision.
ECCC and GNWT met on February 5th and 7th, 2025, to discuss our IRs related to Caribou and Migratory Birds.
ECCC and GNWT met on February 5th and 7th, 2025, to discuss our IRs related to Caribou and Migratory Birds.
Pehdzeh Ki First Nation's Request for Ruling to accept confidential Indigenous Knowledge in written form.
The Pehdzeh Ki First Nation (PKFN) is concerned that the current workplan timelines may prevent meaningful consultation and accommodation for PKFN.
Note to File - Discussion between PKFN and the Review Board about sharing confidential information (Traditional Land Use Study)
PR340 GNWT Response to February 14 Notice of Proceeding allowing the GNWT to respond to information request responses provided by Indigenous Governments and Indigenous organizations regarding the highway alignment.
PFKN and the Review Board discussed EA procedural matters, requests for rulings, and the confidential handling of Indigenous Traditional Knowledge.
The Mackenzie Valley Alternate Highway Route Alignment: A Study on Physical Viability. Prepared for Wrigley Community, Chief and Council, by Maskwa Engineering Ltd./Delta Engineering Ltd.
PR375 Correspondance PKFN to RB - Alternate Route Study cover letter - March 4, 2025. Linked to
Correspondence from PKFN - MVH Alternate Route Alignment Study (PR338).
Sahtú Renewable Resource Board Information Request from January 17, 2025.
This information request is missing from the Information Request Table (PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table), so it is posted as a separate document.
Letter from PKFN to the Review Board asking that a hearing be held at Pehdzeh Ki First Nation in Wrigley.
Note to file about the meeting between the GNWT and Review Board staff on February 12, 2025, regarding the letter accompanying the Review Board's information requests (Round 2).
Government of Canada Cover Letter and responses to two information requests (Round 2): GTC IR #15 (Project Benefits to National Security and Arctic Sovereignty) and SRRB IR #1 (Fish Passage and Fish Habitat).
Cover letter from the GNWT regarding the second round of information requests (IRs). The GNWT answered 49 IRs and is working on answering the remaining IRs “as soon as practicable.”
Parties and the Review Board submitted a total of 153 IRs during Round 2. Of the 153 IRs, 138 answers were due on February 28, and 15 other answers are due on April 11, 2025.
The table contains the preamble and information requests from parties and the Review Board. Most of GNWT's answers were provided as attachments, which are grouped by parties on the Public Registry.
Attachments - answers to SRRB IR 1.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
Attachments - answers to MVEIRB IRs 35-40.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
Attachments - answers to LKFN IRs 1,3,4,6,7,13-16,18-25.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
Attachments - answers to GTC IRs 8, 10,13,14.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
Attachments - answers to CanNor IRs 1-3,6.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
Attachment - answer to MVEIRB IR 14.
See PR329 GNWT cover letter with Reviewer IRs and Proponent Responses table for more information regarding the remaining answers to information requests.
The DAR Addendum deadline has been moved from the end of March to April 11, 2025.
1999 Environmental Scoping Report for the Mackenzie Valley Highway Extension from GNWT. This document was referenced in GNWT's answer to Pehdzéh Kį First Nation's question #2 from the technical sessions regarding earlier alignment studies (PR297 GNWT Responses to PKFN Questions from Technical Sessions, p.3). This study and subsequent engineering and environmental studies completed by the GNWT since 2010 informed the currently proposed route alignment.
Correspondence between Pehdzéh Kį First Nation (PKFN) and the Review Board. The letter outlines that PKFN has not yet shared information regarding their land use, sensitive locations, and preferred alternative route because of confidentiality concerns.
This notice of proceeding provides notice that the GNWT has until March 7, 2025, to provide comment on Information requests directed to Indigenous Governments and organizations.
Response from Tulita Working Groups to MVEIRB-8 about routing.
PKFN's answer to the Review Board's IRs regarding routing issued to Indigenous parties in December 2024.
The Review Board hired an expert advisor to advise on geotechnical issues. His resume is available in PR302 Notice of Proceeding - retention of expert advisor_2024_Oswell.
Some of the information requests submitted on the Online Review System on January 17, 2025 were updated during the week of January 20, 2025.
Wrigley Community Session held in October 2024 - Final Report
Tulita Community Session held in October 2024 - Final Report
Technical sessions participants, held in Yellowknife on November 19-21, 2024
Norman Wells Community Session held in October 2024 - Final Report
Deline Community Session held in October 2024 - Final Report
This letter accompanies Round 2 of information requests issued by the Review Board to GNWT on the Online Review System.
Technical sessions were held in November 2024. Outstanding questions were posted on the Online Review System in December 2024. Answers were provided by the GNWT in January 2025.
Case studies (answer to PKFN 1) are provided in a separate Registry document.
Comments from parties on community sessions draft reports.
Attachments to outstanding questions and answers from the technical sessions (case studies provided by GNWT as the answer to PKFN 1)
MVH draft workplan updated on November 29, 2024.