Great Slave Lake Project Outpost Island Mine site Blanchet Island - - PowerPoint PPT Presentation

Great Slave Lake Project

• Outpost Island Mine site
• Blanchet Island Mine site
• Copper Pass Mine Site

MV2014X0002

GSL Project – Site Proximity GSL Project – Site Proximity

129km

Yellowknife

113km 93km 113km

Site Background Site Background

Outpost

• copper gold and tungsten (1935 1952)
• copper, gold and tungsten (1935-1952)
• West Island – primary mining activities
• East Island – minimal activities

Blanchet

• cobalt and nickel showing in 1968
• cobalt and nickel showing in 1968
• open-cut and adit developed in 1969
• small scale mining until 1970

Copper Pass

• nickel mine with original claims staked by

g y Cominco in 1940

• Copper Pass Mines Ltd in 1969

Outpost - Site Maps Outpost Site Maps

Outpost Areas of Concern Outpost Areas of Concern

129 113 93 113

Outpost - Areas of Concern Outpost - Areas of Concern

129 93

Outpost - mine openings Outpost mine openings

Outpost tailings/waste rock Outpost – tailings/waste rock

North Bay

Outpost Tailings/Waste Rock Outpost Tailings/Waste Rock

Decision Process (risk based) ( )

. Draft HHERA and RAP finalized through g FCSAP expert support . Risk assessment indicates low risk with the existing deposit; sediments are locally impacted . Technical options considered existing risk vs removal vs managing in place

Outpost Tailings/Waste Rock Outpost Tailings/Waste Rock

Preferred Option Selection p

• Technical options tabled at RAP Options

p p Workout:

• 1. base case (do nothing/leave as is)

( g )

• 2. consolidate and re-slope and
• 3. Consolidate, re-slope and cover

, p

• Coming out of RAP workout, 2 “acceptable
• ptions” (1 and 2)

p ( )

• July site tour – further examination

Outpost Tailings/Waste Rock Outpost Tailings/Waste Rock

RAP Finalization RAP Finalization

Site tour feedback from communities . Site tour feedback from communities (concerned with North Bay, consolidate exposed tailings and stabilize the slope is exposed tailings and stabilize the slope is best option) . Elders requested engineered assessment of q g breakwall at lip or North Bay (TM issued) . DKFN technical review suggested additional gg effort on cover (re-veg)

Outpost Tailings/Waste Rock Outpost Tailings/Waste Rock

• Preferred option “consolidate and re-slope”

Preferred option consolidate and re slope is deemed effective mitigation

• > removes exposed tailings from wave

p g action in bay

• > stabilizes the tailings/waste rock mix

g (3:1 slope, 300mm cover, above water line)

• > ECS measures will protect cover

CS easu es p otect co e

• > preferred option = “natural cover”
• > bio-engineering test plots (community-

> bio engineering test plots (community based

O tpost Tailings/Waste Rock Outpost Tailings/Waste Rock

RAP considered Option 3 (consolidate) RAP considered Option 3 (consolidate)

• > no site source to cover liner
• > no site source to cover liner
• > Blanchet source not suitable (cobble)

> blasting and processing would be required

• > blasting and processing would be required
• > costs would exceed benefit achieved

Outpost Tailings/Waste Rock Outpost Tailings/Waste Rock

LUP vs LUP and WL LUP vs LUP and WL

additional admin effort (no concern) . additional admin effort (no concern) . no formal WL close-out process (concern) > monitoring effort (and cost) beyond our

• > monitoring effort (and cost) beyond our

short (5 yr) and long (TBD) monitoring plan > impacts beyond GSL Project (NCSP)

• > impacts beyond GSL Project (NCSP)
• Q. Can we tie Monitoring to LUP ?

Q C ti M it i Pl t it t

• Q. Can we tie Monitoring Plan to commitment

letter under NWTWA ?

Outpost Tailings/Waste Rock g

l+I

Indian and Northern Affairs Canada Affaires indiennes et du Nord Canada

• Canada

Blanchet Island Site Map Blanchet Island – Site Map

Blanchet ore – Beach Area Blanchet ore Beach Area

Before - Summer 2010 Summer 2010 After - Fall 2010

Blanchet mine openings Blanchet mine openings

Adit Rail terminus

Blanchet ore – Mine Area Blanchet ore Mine Area

Spilled Ore

Copper Pass – Site Map Copper Pass Site Map

Copper Pass - Site Map Copper Pass Site Map

Copper Pass – Site Map Copper Pass Site Map

Site Aspects Site Aspects

Mine Component Outpost Blanchet Copper Pass Mi O i /

4 (2 shafts 2

129

Mine Openings/ Surface Trenches

4 (2 shafts, 2 raises) 1 (adit) 6 (trenches)

Buildings

2 6 7

113

Non-Hazardous Refuse

130m3 75m3 16m3

Hazardous Waste Materials

0.5m3 minimal 3,070L

93 113

Mixed Tailings/ Waste Rock

9,000m3

TBD

TBD

Ore

TBD 25m3 120m3

Waste Rock

400m3 1,000m3 4,800m3

Metal Impacted Soil

TBD 2,200m3 5,000m3

PHC Impacted Soil

23m3 50m3 71m3

Surface Water and Sediments

TBD TBD TBD

Outpost Mine – Remedial Options Evaluation

Fort Resolution Fort Resolution June 13-14, 2013

Mine Component Option 1 Option 2 Option 3 Option 4 Option 5 Mine Openings Leave as is Retrofit Caps and Raise Fill in Upgrade Existing Concrete Caps and Seal Main Raise “HYBRID” > Concrete Cap in Caps and Seal Main Raise

• > Concrete Cap

Shaft #1

• > foam for raise

and Shaft #2 Buildings Leave as is Demolish and Burn Non-Hazardous Refuse Leave as is Consolidate and Transport Off-Site Consolidate and Place in On-Site Landfill Hazardous Waste Materials Leave as is Consolidate and Transport Off-Site Mixed Tailings/Waste Rock Leave as is Consolidate and Re-Slope Consolidate, Re-Slope and Cover Waste Rock Leave as is Deposit in Surface Excavations “HYBRID”

• > leave as is

if d d

• > use if needed

Metal Impacted Soil Leave as is Consolidate and Transport Off-Site Capping PHC Impacted Soil Leave as is Off-Site Disposal On-Site Disposal On-Site Treatment Surface Water and Sediments Leave as is Long-Term Monitoring

Blanchet Mine – Remedial Options Evaluation p

Fort Resolution June 13-14, 2013

Mine Component Option 1 Option 2 Option 3 Option 4 Option 5 Adit Leave as is Backfill w borrow Backfill w waste rock Foam Plug Building Structures Leave as is Demolish and Burn R f L i C lid t d C lid t d Refuse Leave as is Consolidate and transfer off-site Consolidate and place in on-site landfill Waste Rock Leave as is Re-slope Re-slope and cover Ore Concentrate Leave as is Consolidate and

• ff-site disposal

Consolidate and

• n-site disposal

Metal Impacted Soil Leave as is Cap w granular material Excavate and place under low permeability cover permeability cover PHC Impacted Soil Leave as is Off-site disposal On-site disposal On-site treatment Surface Water and Sediments Leave as is Long term monitoring

Copper Pass Mine – Remedial Options Evaluation

F t R l ti Fort Resolution June 13-14, 2013

Mine Component Option 1 Option 2 Option 3 Option 4 Option 5

Surface Leave as is Fencing and/or Berms Backfilling Trenches g g (and treat water) Ore Leave as is Grading and Covering Consolidation in Trenches and Capping Waste Rock Leave as is Grading Consolidation in Waste Rock Leave as is Grading Consolidation in Trenches and Capping Metal Impacted Soils Leave as is Consolidation in Trenches and Capping PHC Impacted Leave as is Off-Site Disposal On-Site Disposal On-Site Soils Treatment Structures Leave as is Demolish and Burn Non-Hazardous Materials Leave as is Consolidate and Manage Off-Site Consolidate and Dispose in an On-Site “HYBRID”

• > drums/steel
• > drums/steel off-site
• > clean wood burned

Landfill

• ff-site
• > burn clean

wood

GSL Project Stakeholders GSL Project Stakeholders

Outpost Blanchet Copper Pass

129

Pass AKDFN Lutsel K’e

• 113

Deninu K’ue

• Yellowknives
• 93

113

Yellowknives

• NWTMN
• Tlicho

GSL Project Bundle GSL Project Bundle

Outpost Blanchet = NCS Class 1 Outpost, Blanchet = NCS Class 1 Copper Pass = NCS Class 2 bundling 3 sites together: g g = cost efficiency = facilitates FCSAP funding = facilitates FCSAP funding

GSL Procurement Strategy GSL Procurement Strategy

• Tender project bundle together

Tender project bundle together

• Bidders’ Tour (Sept 17-18th)

P t Wi t 2013

• Post - Winter 2013
• Award – Spring 2014

Outpost mooring Outpost mooring

Aircraft

West Island

Barges Aircraft

West Island

g

Blanchet mooring

Blanchet mooring

Blanchet mooring

Blanchet mooring

Contaminated ore Contaminated ore landing

Copper Pass – Site Access

GSL Work Completed to Date GSL Work Completed to Date

• Stakeholder ID/ Engagement Plan
• Public meetings / Executive updates
• FCSAP expert support (HHERA/RAPs)
• TK Study (mapping exercise, recon,survey)
• RAP Options Workout
• Mine Hazard signage
• Supplemental sampling (seds, WQ)

pp p g ( )

• Archaeological dbase access (PWNHC)
• Blanchet borrow source investigation

g

• Archaelogical survey - underway

Community Engagement

Signs and Elders/Board Tour Signs and Elders/Board Tour

Blanchet Borrow Source Blanchet Borrow Source Investigation

GSL Permitting GSL Permitting

• Same group of stakeholders

Same group of stakeholders

• Sites are co-located geographically

Si il it h d d di l

• Similar site hazards and remedial
• ptions
• Sites are being tendered as bundle
• > requesting one LUP and WL for 3 sites