MVLWB Registry From: Marc Casas <mcasas@mvlwb.com> Sent: - PDF document

MVLWB Registry From: Marc Casas <mcasas@mvlwb.com> Sent: Tuesday, May 5, 2015 3:06 PM To: admin_dkfn@northwestel.net; Alexis_Campbell@gov.nt.ca; barryt@arcticsafaris.ca; boydw@bathurstinlet.com; Carolc.lands@gmail.com; Catherine_BraunRodriguez@gov.nt.ca; CAU-UCA@aandc.gc.ca; chief.lkdfn@gmail.com; chief.srfn@northwestel.net; chief@slfn196.com; christian.bertelsen@cannor.gc.ca; clint_ambrose@gov.nt.ca; consultationsupportunit@aandc.gc.ca; craigecologynorth@gmail.com; czoechocolate@denenation.com; dave.white@aurorageosciences.com; david.alexander@cannor.gc.ca; David_Abernethy@gov.nt.ca; doug_carr@gov.nt.ca; dsteele@hayriver.com; duane_fleming@gov.nt.ca; EC.EA.NWT@ec.gc.ca; environment@ykdene.com; Erin_Anderson@gov.nt.ca; esangris@ykdene.com; exec@slema.ca; fieldworker.frmc53 @northwestel.net; fisheriesprotection@dfo-mpo.gc.ca; fortsmithmetiscouncil@northwestel.net; frmc@northwestel.net; Gary.Woo@neb- one.gc.ca; Glen_Mackay@gov.nt.ca; gnwt_ea@gov.nt.ca; Hilary_machtans@golder.com; hrmc@northwestel.net; ima_dkfn@northwestel.net; Iqbal_Arshad@gov.nt.ca; Jayda_Robillard@gov.nt.ca; jblack@ykdene.com; jbrennan@yellowknife.ca; Jeremy_Roberts@gov.nt.ca; jhood@fortsmith.ca; Jon_Posynick@gov.nt.ca; kate_witherly@gov.nt.ca; lands@slfn196.com; landsnresources@katlodeeche.com; laurie_mcgregor@gov.nt.ca; Lindsay_Armer@gov.nt.ca; lkdfnlands@gmail.com; Marie.Adams@cannor.gc.ca; mark_davy@gov.nt.ca; Matthew.Spence@cannor.gc.ca; mdd@aandc-aadnc.gc.ca; Mike_Vassal@gov.nt.ca; monica_wendt@gov.nt.ca; Nahum_Lee@gov.nt.ca; Nathen_Richea@gov.nt.ca; Norman_McCowan@gov.nt.ca; NTCard@aandc-aadnc.gc.ca; NWTLands@aandc-aadnc.gc.ca; patrick_clancy@gov.nt.ca; Paul_Green@gov.nt.ca; Pauline_DeJong@gov.nt.ca; PDD@aandc.gc.ca; permits@mvlwb.com; preliminaryscreening@reviewboard.ca; president.nwtmn@northwestel.net; rcc.nwtmn@northwestel.net; rhonda_batchelor@gov.nt.ca; Robert_Jenkins@gov.nt.ca; Russell_Teed@gov.nt.ca; Sam.Kennedy@aandc.gc.ca; sao_enterprise@northwestel.net; Scott_Stewart@gov.nt.ca; screeningofficer@eastarm.com; shin.shiga@nsma.net; Steven_Shen@gov.nt.ca; stu_niven@gov.nt.ca; Susan.Abernethy@wscc.nt.ca; Tasha_Hall@golder.com; tim.morton@aandc-aadnc.gc.ca; Tim_Hibbs@gov.nt.ca; tslack@ykdene.com; vtattuinee@kivalliqinuit.ca; Wendy_Bidwell@gov.nt.ca; wpfn@northwestel.net; ww.symbion@shawbiz.ca; Zabey Nevitt; 'Angela Plautz - MVLWB'; 'Patty Ewaschuk'; Robin_Sproule@gov.nt.ca; Scott Stringer; Dwight Grabke; ron.connell48@gmail.com; cgreencorn@yellowknife.ca; nahum_Lee@gov.nt.ca; 'Heather E. Beck'; kor@theedge.ca; Steven_Skinner@gov.nt.ca; heather.scott@mvlwb.com; srobertson@ssimicro.com Subject: RE: MV2007L8-0025 - Miramar Con Mine - May 5 meeting Presentation - Reclamation Status Report Attachments: 5-May-2015 - RSR presentation MVLWB - Distribution.pptx Hello everyone please see attached the Presentation from this morning’s meeting. It will also be posted on the registry and the Online Review System shortly. Thanks and have a nice day, Marc Casas Team Lead (Acting) Mackenzie Valley Land and Water Board 1

7th Floor, 4922 48th St, PO Box 2130 | Yellowknife, NT | X1A 2P6 ph 867.766.7466 | fax 867.873.6610 mcasas@mvlwb.com | www.mvlwb.com Please note: All correspondence to the Board, including emails, letters, faxes and attachments are public documents and may be posted to the public registry. 2

2014 Annual Reclamation Status Report Discussion Session Meeting – May 5 th , 2015

Outline • Brief overview of RSR history • MNML intent and expectations from 2014 RSR • Overview of Remaining Reclamation Activities and their related RECLAIM V7 cost estimate. • Anticipated Schedule • Overview of anticipated Post-Closure monitoring, maintenance, and Water Treatment costs. • Summary of 2014 RSR and Current MNML Closure Cost Estimate • Going Forward

Overview • RSR Submitted annually in accordance with Part 3, item 3 of Water Licence MV2007L8-0025 • Includes specific remediation activities remaining to be completed as per the approved closure and reclamation plan. • Update to Closure and Reclamation plan requested by the MVLWB in 2014, to include revised closure cost estimate using Reclaim V7. • The unit and total cost associated with each remaining activity has been derived from site specific third party unit costs for the remaining activities at Con Mine. These costs have been input into the RECLAIM V7 model. • A schedule for the completion of the remaining activities is also included.

Site Overview 00/00/00 Place title of presentation here 4

History • Annual update to RSR Security amounts, and the associated reduction to Security issued by the MVLWB • Approved Reduction $642,148 was released April 1 st , 2015. • April 30, 2015 Security Balance $11,269,495

Comparison July estimate • As part of the request to update the Closure and reclamation plan, MNML was requested to include a revised cost estimate using RECLAIM V7. • July 2014 Estimate was $7,612,947 • October 20, 2014 meeting with GNWT and MVLWB provided reasons for decision to MNML on 2013 RSR and requested security reduction. • Reasons for decision, and comments were reviewed and incorporated into 2014 RSR, including revisions for new cover design approval. • December 2014 Estimate $8,678,144, increase of $1,065,197 • Unit rate increase for material Load, haul, and place to specification based on site specific average of $12.88/m 3 . Formerly $3.00 Blast, $5.00 Specified based on cost sharing with TRD construction. Approximately $550K increase • Contingency funds for SNP 0040-09 area $100K • Other adjustments to building demolition, and final design quantities approx. $150K • Increase to associated indirect costs approximately $250K (32%) 00/00/00 Place title of presentation here 6

Intent • To provide an update to the Reclamation Status at the Con Mine Site, and insight as to how we arrived at the 2014 closure cost estimate while working toward the objectives listed below. It is not to intended to include technical discussions around the remedial approach, which have been discussed in during the July 2014 technical session and approved by the MVLWB • Re-align cost estimates for remaining activities, completed by various stakeholders (GWNT-ENR, MVLWB, MNML). • Re-align Reclaim model activity descriptions with current state of remediation, including both changes in the Reclaim Model and the approved cover designs. • Includes both increases and decreases to the various sections of the Reclaim V7 model to clearly and transparently identify areas for which security is being maintained. • Update unit costs with current estimates for specific reclamation tasks remaining independent of economy pricing for whole job estimates; using third party contractor rates when available, and Reclaim V7 estimated rates when site specific rates are unavailable. • Increase transparency of the process allowing for the relinquishment of funds for work completed to the satisfaction of the MVLWB.

Overview of Remaining Work • Construction of Vegetative Islands as part of the final cover design • Installation of the Bituminous Liner at Hazardous Waste Disposal Site • Initial seed and fertilizer application for vegetative cover over historic tailings areas • Commissioning of new water treatment plant • Installation of mine dewatering pump • Demolition of remaining site infrastructure not to be retained • Cover of Non-Hazardous Waste Disposal Site • Water Treatment of accumulated site water within Middle Pud • Completion of the Middle Pud drainage channel • Monitoring and Maintenance of vegetation and drainage • Long-term water treatment of accumulated surface and minewater • Long-term site and water quality monitoring. 8

Schedule 9

Unit Rates Applied to RECLAIM V7 •Based on specific tasks, with no economy discount for work being performed. Detail Units Rate Source Comments m 3 Doze Overburden Piles $3.80 RV7 – DSH - Applied to Lower Pud Grading Doze Positioned Rock to final m 3 $0.95 RV7 – DSL - Doze positioned rock over road on Upper Pud grade Third Party Contractor Rate expressed as an Load, Haul, Place Material on average to L>H>P stockpiled material, tailings, or m 3 $12.88 Third Party site to specification waste rock from any point to any point on the Con Mine property. (Constructing Vegetative Islands) Load, Haul, Place Material in Third Party Contractor Rate to L>H>P Rip Rap m 3 $35.63 Third Party drainage channel to spec. material and place in the Drainage channels Supply and installation of non-woven geotextile for Supply & install Geotextile m 2 $3.00 MNML Cost vegetative islands and drainage channel construction. Unit rate based on MNML costs $12.80/kg Seed and $1.60/kg Fertilizer spread at an application rate of Vegetation Ha $1,450 MNML Cost 60kg/ha and 400kg/ha respectively ($1,450/ha). Installation of Bituminous Supply completed, installation of ES2 bituminous m 2 $14.00 RV7 - GSIH Geomembrane Liner at Hazards Waste Disposal Site.

RECLAIM V7 Estimate • The Following slides have been extracted from the 2014 RSR, generally in the order they appear in the report. • All activities and work identified is for the completion as specified in the approved closure and reclamation plan. • Questions on specific slides are welcome. However, please remember the stated intent of this presentation and keep questions within the intended scope. 11