2026 Top 25 Remediation Projects Report - Report - Page 25
MILESTONE ENVIRONMENTAL CONTRACTING
15
Coral Harbour
$25-30 Million •
Location: Kivalliq, NU
Owner: Crown-Indigenous Relations and Northern
Affairs Canada (CIRNAC)
Key Project Players: Crown Indigenous Relations and
Northern Affairs Canada (project manager); Public
Works and Government Services Canada (project
manager); Sudliq Developments Ltd (primary
contractor) with Milestone Environmental
Contracting Inc. as subcontractor; Nunami Stantec
Limited (construction supervision); and, Salumaq
Environmental Contracting Ltd (capacity development
and skills training).
Funding/Financing: Public – Federal
Types of Contaminants: Heavy metals, petroleum
hydrocarbons (PHCs), polycyclic aromatic hydrocarbons
(PAHs), and volatile organic compounds (VOCs).
Remediation Approach: Treatment and handling of
20,000 cubic metres of contaminated fine gravel,
disposal of drums, and debris, consolidation of 1152
cubic metres of non-hazardous waste from five Areas
of Potential Environmental Concern (APECs) on-site
and store on TSA(s), structural demolition, and borrow
source development.
• Brownfield Remediation: Delivered targeted
cleanup of a former Distant Early Warning (DEW) Line
military site, providing an effective model for northern
brownfield reclamation.
• Environmental Restoration: Implemented restoration
measures to return ecologically and culturally
significant land to safe and sustainable use.
• Sustainable Redevelopment: CIRNAC’s Long Term
Monitoring Plan to be implemented for up to 25 years
to manage ongoing monitoring of the site.
In-Situ/Ex-Situ/Both: In-Situ
Estimate Date of Completion: March 2027
THE CORAL HARBOUR site is located approximately 10 kilometres northwest
of the Hamlet of Coral Harbour, NU, on Southampton Island. The former military
base in Coral Harbour was used as a staging location by Canadian and American
forces during the construction of the Distant Early Warning (DEW) Line sites in
Northern Canada and for various other northern projects.
After its decommissioning in the 1970s, it was abandoned, leaving a complex
brownfield burdened with environmental liabilities, including hydrocarbonimpacted soils, fuel tanks, hundreds of drums, asbestos and lead materials, and
deteriorating structures. It remained compromised for decades.
The multi-year remediation was delivered by Sudliq Developments Ltd. (SDL),
a wholly Inuit-owned company, working with Milestone Environmental Contracting
and later forming Salumaq Environmental Contracting Inc.—a majority Inuitowned partnership focused on community capacity building and sustainable
remediation across Nunavut.
The project team successfully led a comprehensive remediation project, achieving significant environmental, logistical, and community-focused outcomes.
The Coral Harbour Remediation and Inuit Capacity Building Project was
awarded a 2025 Brownie Award in the Restrategize category recognizing
outstanding partnerships and community engagement.
• (range reflects that tender is outstanding)
ENV IR ONMEN TJOURN AL.C A
ENV IRONMENT JOURN AL TOP 25 REMEDI ATION PRO JEC T S 2026
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