CON MI NE CON MI NE CON MI NE CON MI NE CLOSURE & RECLAMATI - PowerPoint PPT Presentation

CON MI NE CON MI NE CON MI NE CON MI NE CLOSURE & RECLAMATI ON CLOSURE & RECLAMATI ON CLOSURE & RECLAMATI ON CLOSURE & RECLAMATI ON PLAN OVERVI EW PLAN OVERVI EW February 2 2 nd nd , 2 0 0 7 February 2 2 , 2 0 0 7

C C Current Status of the Closure & Reclamation Plan Current Status of the Closure & Reclamation Plan t St t t St t f th f th Cl Cl & R & R l l ti ti Pl Pl � All sections of the plan (with the exception of the reclamation � All sections of the plan (with the exception of the reclamation cost estimate) have been reviewed by the Con Mine A&R Working Group set up by the MVLWB in 2003 � The Working Group has met ~ 20 times over the past 4 years to discuss technical details of the proposed reclamation plan for th the Con Mine site C Mi it � The Working Group provided recommendations on each g p p section of the Plan that led to Miramar revising each section prior to submission to the MVLWB

St t St t Status of the Con Mine Closure & Reclamation Plan Status of the Con Mine Closure & Reclamation Plan f th f th C C Mi Mi Cl Cl & R & R l l ti ti Pl Pl � Three public information sessions (open house style) were held � Three public information sessions (open house style) were held in 2005/06 to present the content of each Section to the public and to elicit feedback � In December of 2006 the MVLWB completed their review of all sections of the Reclamation Plan (except the reclamation cost estimate); ti t ) � The Board has given conditional approval to each section g pp indicating what changes were needed to satisfy the MVLWB. � Miramar has revised the Plan to incorporate these changes and � Miramar has revised the Plan to incorporate these changes and formally re-submitted the Plan to the MVLWB at the end of January 2007 for final Board approval

St t St t Status of the Con Mine Closure & Reclamation Plan Status of the Con Mine Closure & Reclamation Plan f th f th C C Mi Mi Cl Cl & R & R l l ti ti Pl Pl � The MVLWB Board staff have indicated that this revised � The MVLWB Board staff have indicated that this revised version of the Plan will be sent to the Working Group for one final review to confirm that the Board’s conditions have been met – this meeting met this meeting. � Once the Plan is approved, Miramar will implement the Plan starting in 2007, with most physical reclamation work t ti i 2007 ith t h i l l ti k completed by the end of 2009. Water treatment and post closure monitoring and maintenance will continue at least through 2031 through 2031. � Leased land held by Miramar can be returned to the GNWT starting in 2007.

St t St t Status of the Reclamation Cost Estimate Status of the Reclamation Cost Estimate f th f th R R l l ti ti C C t E ti t E ti t t � Miramar submitted a revised reclamation cost estimate to the � Miramar submitted a revised reclamation cost estimate to the MVLWB in December of 2007. � Revised cost estimate is $12.5 million, not including work R i d t ti t i $12 5 illi t i l di k completed through 2006. � ~60% of this cost is direct physical reclamation while 40% is for ongoing water treatment and post closure monitoring and maintenance. � MVLWB has asked INAC to review this cost estimate and provide the Board advice regarding any revision to reclamation provide the Board advice regarding any revision to reclamation security levels.

Status of the Reclamation Cost Estimate Status of the Reclamation Cost Estimate Status of the Reclamation Cost Estimate Status of the Reclamation Cost Estimate Miramar currently has $10.0 million in security set aside for � reclamation of the Con Mine reclamation of the Con Mine – $9.0 million in an environmental trust set aside for reclamation from the sale of the Bluefish hydro facility pledged to INAC under the Water License – $1.0 million in a second trust set aside for reclamation from the sale of the Bluefish hydro facility Bluefish hydro facility Miramar estimates that it will spend an additional $4 million on final � reclamation in 2007. Consequently by the end of 2007, the amount q y y , held in two reclamation trusts will exceed the remaining estimated reclamation liability Final clean up and treatment of the remaining arsenic sludges through Final clean up and treatment of the remaining arsenic sludges through � � the autoclave is scheduled for completion by September of 2007 leading the way for mill demolition in late 2007 – early 2008.

St St Structure of the Con Mine Closure & Structure of the Con Mine Closure & ct ct e of the Con Mine Clos e of the Con Mine Clos e & e & Reclam ation Plan Reclam ation Plan Table of Contents Table of Contents 1 .I ntroduction and History d i d i 2 .Site I nfrastructure and Facilities 3 .Underground W orkings 4 .Rat Lake 5 .Con Pond and Negus Pond 6 .Tailing Containm ent Areas ( TCA’s) 6 .Tailing Containm ent Areas ( TCA s) 7 .Contam inated Soils 8 .W ater Managem ent 9 Closure and Post Closure Site Monitoring 9 .Closure and Post Closure Site Monitoring 1 0 .Cost Sum m ary and Schedule

Public I nform ation Session # 1 - Held - June 1 5 th , 2 0 0 5 Sections Covered: 1 . I ntroduction and History 2 . 2 Sit I Site I nfrastructure and Facilities f t t d F iliti 3 . Underground W orkings 4 . Rat Lake Public I nform ation Session # 2 -Held October 2 6 th , 2 0 0 5 Sections Covered: 5 . Con Pond and Negus Pond 6 . 6 T ili Tailing Containm ent Areas ( TCA’s) C t i t A ( TCA’ ) – Historic Areas – Recently Active Areas ( Upper and Middle Pud) Public I nform ation - Session # 3 - Held March 1 6 th , 2 0 0 6 Sections Covered: 7 . Contam inated Soils 8 8 . W W ater Managem ent t M t 9 . Closure and Post Closure Site Monitoring

The key reclam ation objective is to return the • m inesite to a viable, and w herever practicable, self- sustaining ecosystem i i End land use objective is a m ix of land suitable for j • industrial use m ixed w ith open space Areas not im pacted by m ining could be used for other Areas not im pacted by m ining could be used for other • • purposes pending appropriate setbacks There w ill be three sites designated as hazardous Th ill b th it d i t d h d • sites ( Con and Negus Ponds and the hazardous m aterials storage site) that w ill be capped and thus not available for future land use not available for future land use

S S Specific Reclam ation Objectives Specific Reclam ation Objectives ifi R ifi R l l i i Obj Obj i i • Progressive Reclam ation activities started in 2 0 0 2 Progressive Reclam ation activities started in 2 0 0 2 • Mill area to be reclaim ed to a standard suitable for future industrial land use • Sim ilarly the Shops/ Office/ Roads/ Parking areas Sim ilarly the Shops/ Office/ Roads/ Parking areas to be reclaim ed to industrial land use standard • Historic Tailing Areas to be drained contoured and • Historic Tailing Areas to be drained, contoured and revegetated – 3 5 hectares • Upper and Middle Pud TCA’s to be covered w ith 5 0 to 6 0 cm of rock and vegetated – 5 0 hectares

Section 1 Section 1 Section 1 Section 1 - I ntroduction I ntroduction I ntroduction I ntroduction History and Reclam ation History and Reclam ation Objectives Obj Obj Objectives ti ti • No Com m ents received from No Com m ents received from MVLW B and the W orking Group. MVLW B and the W orking Group. MVLW B and the W orking Group. MVLW B and the W orking Group.

Section 2 Section 2 Section 2 - I nfrastructure and Facilities Section 2 I nfrastructure and Facilities I nfrastructure and Facilities I nfrastructure and Facilities • All buildings on Site are to be rem oved, w ith potentially 3 exceptions: 3 exceptions: Masonic Lodge • One private residence • Recreation Hall • Exceptions subject to approval of the land ow ner ( GNW T) - • copies of letters from these 3 interested parties have been subm itted to W ater Board. A procedure has been added that deals w ith the • assessm ent of concrete foundations for contam inants. • A A procedure covering the rem oval of the tim ber and d i th l f th ti b d concrete crib at the boiler house at the Con dock has been added ( Section 2 .7 ) . This procedure references DFO guidance to m onitor the w ork to protect fish and g com m its to obtaining DFO approval of the detailed w ork i b i i l f h d il d k plan prior to proceeding.

Mill Comple Mill Complex Mill Complex Mill Comple Mill Complex Mill Comple Mill Comple Mill Complex x – July 2005 x – July 2005 x x July 2005 July 2005 2005 2005 2005 2005 Mill Mill comp Mill Mill Mill comp Mill Mill Mill complex complex l l l l ex at ex at t t t t pr t pr t presen presen esent. esent. t t

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