Perpetua Resources Corp. · TSX:PPTA
Perpetua Resources — Midas Gold — Investor Presentation (October 2020)
55 slides from Perpetua Resources's investor presentation, October 2020
Slide 1: Restore the Site: The Stibnite Gold Project
RESTORE THE SITE THE STIBNITE GOLD PROJECT Valley County, Idaho OCTOBER 2020 MAX.TSX MDRPF.OTCQX
Slide 2: Agenda
AGENDA NEPA Process DEIS Comment Period Modified Proposed Q&A Action (ModPRO) Stibnite Gold Project DEIS Alternatives Project Recap Comparison ModPRO Benefits – Alternative 2 of DEIS
Slide 3: The Stibnite Gold Project
THE STIBNITE GOLD PROJECT We can take an area abandoned after 100 years of mining and use a sustainable approach to restore the environment and develop a modern mining industry. 3
Slide 4: Stibnite Gold Project
STIBNITE GOLD PROJECT Coeur d’Alene Stibnite Gold Project Midas Gold Au-Sb IDAHO 4
Slide 5: Slide 5
Slide 6: SGP Plan of Restoration and Operations (PRO)
SGP PLAN OF RESTORATION AND 6 OPERATIONS (PRO) Submitted September 2016 Over five years in preparation • Natural resource restoration via private investment • Cleans up legacy impacts • Restores salmon migration into upper EFSFSR • Over 1,000 well-paid jobs for Idahoans • Repairs damage from a centu
Slide 7: Gabe eae!
Gabe eae! Legend Dovolopsrent ROG, — vnderrnd Wertings Ronis Osturbone Aras | Peter iame Propcon: NADES Sate Pane 0 Wes Feat Date DBiae. Prepared By bes Gat Yellow Pine Pit & Underground Mine. Monday Camp — Midnight Townsite Fiddle Comp — Monday Exploration Tunnel = Nees wenn Truck / Equipment — Rea
Slide 8: Reclamation and Restoration
RECLAMATION and RESTORATION Reclamation: Restoration: stable, static, little to no naturally dynamic, change; may not mimic deformable, resilient; mimics natural conditions natural conditions Meadow Creek, ID Meadow Creek, ID
Slide 9: Mining Legacy
MINING LEGACY YELLOW PINE PIT East Fork of the South Fork of the Salmon River flows into the abandoned pit, blocking migration to habitat. 9
Slide 10: Yellow Pine Pit - Today
YELLOW PINE PIT - TODAY Upstream fish passage blocked since 1938 Filling sediment trap; continued Blowout Creek sedimentation 10
Slide 11: Yellow Pine Pit - Restored
YELLOW PINE PIT - RESTORED Permanently restore migratory fish passage across backfilled YPP Stream design to allow migration, scour, deposition During operations, fish passage via 0.9 mile tunnel Access to upstream restored/enhanced spawning and rearing habitat 11
Slide 12: Long-Term Access to Upper EFSFSR
LONG-TERM ACCESS TO UPPER EFSFSR
Slide 13: Mining Legacy: Spent Ore and Legacy Tailings
MINING LEGACY SPENT ORE and LEGACY TAILINGS 10.5 million tons of legacy spent ore and unlined tailings interact with the water table 13
Slide 14: Mining Legacy: Meadow Creek
MINING LEGACY MEADOW CREEK 4,900 ft rock lined ditch with limited habitat function 14
Slide 15: Mining Legacy: Blowout Creek
MINING LEGACY BLOWOUT CREEK Largest source of sediment in the watershed for 50+ years. 14-foot drop in water table, loss of wetlands 15 function.
Slide 16: Restoration: Upfront and Concurrent
RESTORATION: Upfront and Concurrent Period Construction Operations Closure ACTIVITY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 EFSFSR Diversion (tunnel) 2 On-Site Mine Remove spent ore in Meadow Creek valley 2 Features/Activities Legacy material reprocessing 4 Remove legacy development rock
Slide 17: Post Closure
Restored EFSFSR West End Lake Hangar Flats Lake Post Closure
Slide 18: Intermission: Questions
INTERMISSION: QUESTIONS
Slide 19: NEPA and Permitting
NEPA AND PERMITTING NOA for NOI, EIS Project Alternatives & DEIS In Federal Submittal Administrative Pre-work & Initiation & Public Environmental Prepare Register of PRO Approval Planning Scoping Analysis Draft EIS Q3 2020 9/2016 12/2016 Q1/Q2 2017 Q2/Q3 2017 Q3 2017 – Q3 2019 2018 - 2020 Engineerin
Slide 20: Draft EIS
DRAFT EIS Hydro, Geochem, Temp and Water Alternatives & Balance Modeling Environmental Analysis MGII feasibility MGII Modified analysis Proposed Action Alternatives & Writing of Draft EIS (DEIS) Environmental Chapters, Review & Edit Analysis MGII CH 1-3 review Prepare Draft EIS Preliminary (Working)
Slide 21: SGP Modeling Process Overview
SGP MODELING PROCESS OVERVIEW 21
Slide 22: Modified PRO
MODIFIED PRO 7 1 MG Modified Modifications to the PRO to address Proposed Action concerns that have surfaced through continued project analysis. Mod-PRO submitted May 3, 2019 2 1. DRSFs – reduce, remove 1 8 2. On-site lime generation – less traffic 3. TSF – diversions, liner design 4. Surface water
Slide 23: Modified PRO
MODIFIED PRO MG Modified 1) Remove West End DRSF, backfill Midnight pit, partially backfill Proposed Action Hangar Flats pit, geosynthetic covers on DRSFs Removing the West End DRSF reduces overall project footprint by 96 acres and new disturbance by 72 acres
Slide 24: Modified PRO
MODIFIED PRO MG Modified 3) Low-flow piping in diversion channels, TSF liner modifications Proposed Action Piping the low flows underground would prevent warming that was simulated to occur in the open diversion channel flow
Slide 25: Modified PRO
MODIFIED PRO MG Modified 3) Low-flow piping in diversion channels, TSF liner modifications Proposed Action PRO ModPRO The final TSF liner system would be modified to meet the IDAPA regulatory requirements in effect at the time of facility permitting.
Slide 26: Modified PRO
MODIFIED PRO MG Modified Proposed Action 4) Divert Hennessy Creek in open channel Flow in the existing diversion would be rerouted away from the legacy development rock dumps thereby improving water quality
Slide 27: Modified PRO
MODIFIED PRO MG Modified Proposed Action 4) Divert Hennessy Creek in open channel, keep Meadow Creek diversion, extend Meadow Creek liner, HF pit fill (peak shaving) Routing Meadow Creek around Hangar Flats pit lake would improve average stream temperatures and have little effect on maximum temperat
Slide 28: Modified PRO
MODIFIED PRO MG Modified Proposed Action 6) Alternative routing of Burntlog Access Route Reduces wetland impacts, fewer drainage crossings, less overall disturbance, reduced fuel consumption, GHG and fugitive dust
Slide 29: Modified PRO
MODIFIED PRO MG Modified 7) Maintain seasonal public access, options for through-site Proposed Action access
Slide 30: Water Quality Management Plan
WATER QUALITY MANAGEMENT PLAN Mine Plan •Sequence of operations Management and treatment for mine-impacted water prior to and timing of activities •Contact Water Generating Features discharge to WOTUS in compliance with Clean Water Act Treatment Site Wide System Water and IPDES permit being sought b
Slide 31: Water Management Overview
WATER MANAGEMENT OVERVIEW Reroute of Upslope perennial diversions stream EOY 7 TSF EOY 7 Fiddle DRSF EOY 7 Yellow EOY 7 Pine pit Hangar FD-1 Flats DRSF HF-3 EOY 7 Proposed EOY 7 BT-1 Hangar Flats pit WTP MD-1 West End pit Reroute of PS-1 perennial stream TS-1 EOY = End of Year phase DRSF = Developme
Slide 32: Stream Concentrations During Operations
STREAM CONCENTRATIONS DURING OPERATIONS YP-SR-4
Slide 33: Intermission: Questions
INTERMISSION: QUESTIONS
Slide 34: Draft EIS/Public Comment
DRAFT EIS/PUBLIC COMMENT Publish DEIS Notice of Publish Notice of Triggers public Availability (NOA) comment period Availability (NOA) ____________ Draft EIS Comment DEIS Public Period www.RestoreTheSite.com Comment Period Track project updates at: www.fs.usda.gov/goto/StibniteGold
Slide 35: Alternatives in SGP DEIS
ALTERNATIVES IN SGP DEIS Prepare Draft EIS 2018 - 2020 Alternative 4 Alternative 1 Alternative 2 Alternative 3 Alternative 5 Yellow Pine SGP PRO ModPRO* EFSFSR TSF No Action Route MG proposed Project Agency alternative: Agency alternative: SGP restoration not action, Sept 2016 refinements, TSF in up
Slide 36: Alternative 1 – The PRO
ALTERNATIVE 1 – The PRO Mine Feature Alternative 1 (PRO) Alternative 2 (Mod-PRO) Alternative 3 - EFSFSR TSF Alternative 4 -Yellow Pine Rt GM stockpiles Per PRO No change Changes related to TSF relocations No change Mining Three pits (YPP, WEP, HFP) No change No change No change Legacy tailings Proce
Slide 37: Alternative 2 – the ModPRO
ALTERNATIVE 2 – the ModPRO Mine Feature Alternative 1 (PRO) Alternative 2 (Mod-PRO) Alternative 3 - EFSFSR TSF Alternative 4 -Yellow Pine Rt GM stockpiles Per PRO No change Changes related to TSF relocations No change Mining Three pits (YPP, WEP, HFP) No change No change No change Legacy tailings Pr
Slide 38: Modified PRO
MODIFIED PRO 7 1 MG Modified Modifications to the PRO to address Proposed Action concerns that have surfaced through continued project analysis. Mod-PRO submitted May 3, 2019 2 1. DRSFs – reduce, remove 1 8 2. On-site lime generation – less traffic 3. TSF – diversions, liner design 4. Surface water
Slide 39: Alternative 3 – EFSFSR TSF
ALTERNATIVE 3 – EFSFSR TSF Mine Feature Alternative 1 (PRO) Alternative 2 (Mod-PRO) Alternative 3 - EFSFSR TSF Alternative 4 -Yellow Pine Rt GM stockpiles Per PRO No change Changes related to TSF relocations No change Mining Three pits (YPP, WEP, HFP) No change No change No change Legacy tailings Pr
Slide 40: Alternatives 1,2,4 – PRO TSF
ALTERNATIVES 1,2,4 – PRO TSF PRO TSF Tailings Embankment Hangar Flats DRSF SODA/tailings (repurposed/reprocessed) 41
Slide 41: Alternative 3 – EFSFSR TSF
ALTERNATIVE 3 – EFSFSR TSF Geohazard EFSFSR TSF Tailings Embankment Housing Fac. Hangar Flats DRSF Mine Access SODA and underlying Bradley tailings are not repurposed/reprocessed 42
Slide 42: Alternative 3 – Upper EFSFSR Habitat
ALTERNATIVE 3 – UPPER EFSFSR HABITAT Potential habitat (miles) available upstream of the existing Yellow Pine pit cascade barrier Habitat Type Chinook salmon Steelhead Bull trout Cutthroat Critical Habitat 16.5 N/A 10.6 N/A Intrinsic Potential 6.3 5.3 N/A N/A Occupancy Potential N/A N/A 24.7 24.7
Slide 43: Alternative 4 – Yellow Pine Rt
ALTERNATIVE 4 – YELLOW PINE RT Mine Feature Alternative 1 (PRO) Alternative 2 (Mod-PRO) Alternative 3 - EFSFSR TSF Alternative 4 -Yellow Pine Rt GM stockpiles Per PRO No change Changes related to TSF relocations No change Mining Three pits (YPP, WEP, HFP) No change No change No change Legacy tailing
Slide 44: Alternative 4 - Access
ALTERNATIVE 4 - ACCESS Yellow Pine Access Route Burntlog Access Route • Passes through Yellow Pine • Less public interaction • Adjacent to Johnson Ck/EFSFSR • Further from drainages • Avalanche-prone drainage • Higher elev, less avalanche risk • 2-year project delay • Dual headed construction • > 10
Slide 45: April 2019 Avalanche in EFSFSR corridor
April 2019 Avalanche in EFSFSR corridor
Slide 46: ModPRO/Alternative 2 Benefits
MODPRO/ALTERNATIVE 2 BENEFITS • A refined version of the PRO • Reduced disturbance footprint • Maximizes use of previous disturbance areas Alternative 2 • Reduced potential environmental impacts • BMPs to reduce water temperature impacts ModPRO • Improved SW management • SW/GW treatment (WQMP) • Bes
Slide 47: ~$1 Billion Investment, >500 Direct Rural Jobs
~$1 BILLION >500+ DIRECT INVESTMENT RURAL JOBS ~$1 billion total construction and investment 3 years of construction 37 miles of road: new and upgraded roads including 12-15 years of operations 5 bridges 3+ years of closure 72 miles of transmission line: new and upgraded 1,000 temporary jobs in cons
Slide 48: Economic Opportunities
ECONOMIC OPPORTUNITIES DIRECT BENEFITS* $89M spent in Idaho 2014-2019 • $232 million in average annual expenditures • $329 million in federal corporate income taxes • $86 million in state and local taxes and mine license fees • $3.8 million in local taxes for schools, government, law enforcement, et
Slide 49: Write a Letter, Tell Your Network, Share Your Support
1. WRITE A LETTER OFFICE HOURS – WE ARE VIRTUAL Weekly virtual community meetings are here to get your questions answered. BRIEFINGS – WE WILL ZOOM TO YOU Who do you know that we should be talking to? We will bring our team to you. Schedule a briefing: community@midasgoldinc.com www.RestoretheSite.c
Slide 50: Up Next
UP NEXT www.midasgoldidaho.com/virtual-events Stibnite Gold Project Overview Webinar TUESDAYS | NOON Hear an overview of the Stibnite Gold Project and all it entails. Virtual Office Hours WEDNESDAYS | NOON Office hours will focus on answering questions you have on the Stibnite Gold Project. Stibnite
Slide 51: Questions
A@ VESTIONS Nat, ws a =e
Slide 52: Because Every Voice Counts
Because Every Voice Counts - mM MIDAS GOLD
Slide 53: Forward Looking Statements
FORWARD LOOKING STATEMENTS Statements contained in this presentation that are not historical facts are "forward-looking information" or "forward-looking statements" (collectively, "Forward-Looking Information") within the meaning of applicable Canadian securities legislation and the United States Pr
Slide 54: Compliance with NI 43-101
COMPLIANCE WITH NI 43-101 The technical information in this presentation (the “Technical Information”) has been approved by Stephen P. Quin, P. Geo., President & CEO of Midas Gold Corp. (together with its subsidiaries, “Midas Gold”) and a Qualified Person. Midas Gold’s exploration activities at Stib
Slide 55: Thank You
THANK YOU WWW.MIDASGOLDIDAHO.COM EMAIL: info@midasgoldinc.com PHONE: (208) 901-3060