Acknowledgments INAC Akaitcho Dene Northern Contaminated Sites - - PowerPoint PPT Presentation

Great Slave Lake Remediation Project

COMMUNITY ENGAGEMENT AND APPLICATION OF INNOVATIVE REMEDIATION AND RESTORATION

Breadmore, R1 Hoyt, J2 , Wilson, J1

• 1Aboriginal Affairs and Northern Development Canada – Contaminants and Remediation Directorate
• 2 Public Works and Government Services Canada

2016 RPIC Federal Contaminated Sites National Workshop Montreal, QC April 25-27, 2016

Acknowledgments

INAC

• Northern Contaminated Sites Program
• Contaminants and Remediation Division
• Governance and Partnerships

PWGSC

• Northern Contaminated Sites Group

ARCADIS Rowe’s Construction Ltd Akaitcho Dene

• Lutsel K’e Dene First Nation
• Deninu Kue First Nation
• Yellowknives Dene First Nation

NWT Métis

• Fort Resolution Métis Council

Tlicho Government

• Site location and history
• Innovative remediation and restoration

approaches

• Engagement strategies
• Project Status
• Wrap up and questions

Presentation Overview

GSL Project – Site Locations

Outpost Island Mine History

• gold/copper/tungsten
• operated sporadically

between 1935 and 1952

• 1955 fire destroyed most

structures

Blanchet Island Mine History

• cobalt and nickel
• staking began in 1960s
• exploration and mining

until 1970-71

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Wilson Island

• Former gold exploration site
• Mineral assessment work started in 1916!
• Exploration activities 1920-1930s

Waldron River

• Former copper exploration site
• First claims staked in 1939
• Exploration in 1940s and 1960s

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Contaminated Site Legacies

• Mine openings (2 shafts, adit and trenches)
• Exposed tailings and arsenic-rich waste ore
• PHC and metal impacted soils/sediments
• Hazardous materials
• Unfired blasting explosives
• Site infrastructure
• Metal debris

Outpost Island Mine Remediation Challenge SOLUTION

• Tailings pulled back from the bay above water line
• Rock armour to stabilize slope and prevent continued erosion and sediment

transport

North Bay Stabilization

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Outpost Island Mine Remediation Shafts #1 and #2 Challenge

Outpost Island Mine Remediation

Shafts #1 and #2 SOLUTION

Site preparation Steel I-beam support Polyurethane foam plug Rock armour cap and vent

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Outpost Island Mine Restoration Re-Vegetation Challenge

Outpost Island Mine Restoration

Revegetation SOLUTION

Area sloped and graded at remediation Local Vegetation Being Planted

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Blanchet Island Mine Remediation Mine Adit Closure Challenge

Blanchet Island Mine Remediation

Mine Adit Closure SOLUTION

Engineered cap Consolidated waste rock and impacted oils

Rock back fill of adit

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Blanchet Island Mine Remediation Beach Head Restoration Challenge

Ore concentrate at abandonment

Abatement program (2010)

Blanchet Island Mine Remediation

Beach Head Restoration

Log in fill as SEC Organics top layer for future re-veg Impacted soil excavation

SOLUTION

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Wilson Island and Waldron River Mine Opening Remediation CHALLENGE

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Wilson Island and Waldron River Mine Opening Remediation

Polyurethane foam plugs

SOLUTION

• Community Engagement Plan is a regulatory requirement
• > Plan and strategies were updated in 2015
• Project update meeting in February 2015
• > led to Site Blessing in June 2015
• Majority of site workers were from local communities
• Elders and Land and Water Tour in September
• Project close-out celebration in December 2015
• Community based monitoring training in Q4 2015-16
• Long Term Monitoring Plan (commencing in 2016) will be

community-based

Community Engagement Strategy

Aboriginal Stakeholders:

Akaitcho Dene (Interim Measures Agreement)

• Yellowknives Dene First Nation (YKDFN)
• Lutsel K’e Dene First Nation (LKDFN)
• Deninu K’ue First Nation (DKFN)

NWT Métis (Interim Measures Agreement)

• Fort Resolution Métis Council (FRMC)

Tlicho (Tlicho Final Agreement)

• Tlicho Government

Executing Community Engagement

Spring 2013

• Project Planning

Summer 2013

• Site Tour
• Community

Briefing 2014/15

• Community

Update Meetings Summer 2015

• Site Blessing and

Tour

• Elders and Board

Site Tour

• Local Workforce

Winter 2015

• Project Closeout

Celebration

PROJECT EXECUTION

Project Update Meeting February 2015

• Update Akaitcho stakeholders on the

progress of GSL Project and plans for upcoming remediation work

• Received input on how communities

could be involved > Site Blessing ceremony >Local workforce employment

Site Blessing June 2015

Elders and Board Tour September 2015

Project Close-out Celebration

Elders Committee Meeting Community feast and presentations

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Project Closure Celebration !

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Faces of the Great Slave Lake Remediation Project

AANDC-PWGSC ARCADIS Rowe’s-Outcome Mackenzie Valley Land and Water Board

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Faces of the Great Slave Lake Remediation Project

Site Crew Community leadership and technical resources Community Elders and Youth

Project Take-Aways

• Obtain and Maintain Social Licence with

communities

• Engage stakeholders at all stages of project

(planning-remediation-closure)

• Allow Remediation Contractor freedom and

flexibility facilitates to design and execute innovative remediation and restoration strategies

• Take time and effort to celebrate project

completion

• Recognize the efforts of all those involved

QUESTIONS ?

Thank you