Gor don L ake Mine Site s: MVL WB T e c hnic al Pr e se - - PowerPoint PPT Presentation

Pr e par e d for the Mac Ke nzie Valle y L and and Wate r Boar d Se pte mbe r 15, 2016

Gor don L ake Mine Site s: MVL WB T e c hnic al Pr e se ntation

1. Pr e se nt site loc ation and summar y 2. R e vie w de tails of the r e me diation pr

• gr

am 3. Pr

• vide update on the r

e me diation pr

• gr

am 4. Addr e ss c ompone nts of the Pe r mits

– Pr

e , dur ing, and post r e me diation pr

• gr

am

Purpo se o f Pre se nta tio n

Site L

• c a tio ns a nd Summa rie s

We st Ba y T re a c y K idne y Po nd T ry Me Murra y L a ke Burnt I sla nd Go o dro c k Sto rm Pro pe rty Ca mla re n

Site Summar ie s

• Burnt I

sla nd

• Go ld mining fro m 1930s to 1990s
• Ca mla re n
• Go ld mining fro m 1930s-1991
• One la rg e ta iling s c o nta inme nt a re a
• Go o dro c k
• Go ld a nd tung ste n mining fro m 1930s to 1970s
• K

idne y Po nd

• Go ld mining fro m 1944-1995
• Murra y L

a ke

• Go ld e xplo ra tio n 1930s to 1940s a nd sma ll e xplo ra tio n pro je c ts 1980s to

1990s

Site Summa rie s

• Sto rm Pro pe rty
• Go ld a nd tung ste n e xplo ra tio n fro m 1940-1975
• T

re a c y

• Go ld mining fro m 1945-1953
• T

ry Me

• Go ld e xplo ra tio n to o k pla c e fro m 1938 -1941 with

no a dditio na l wo rk until 1989 whe n a drilling pro g ra m wa s c o nduc te d

• We st Bay
• Go ld o pe n pit mining during 1982-1984 a nd a g a in

in 1990 due to a dditio na l re so urc e s o f g o ld in the

• pe n pit a re a

Re vie w Re me dia tio n Pro g ra m

Ha za rd Ca te g o rie s:

• Co -Ming le d I

mpa c te d So il – pla c e d in T SCA o r WRSCA

• Me ta ls I

mpa c te d So il – pla c e d in T SCA o r WRSCA

• PHC I

mpa c te d So il – L a ndfa rm a nd c o ve r o n T SCA o r WRSCA

• Mine Ope ning s – a ddre sse d o n individua l b a sis

c o nside ring sa fe ty

• Unde rg ro und Wo rking s – a ddre sse d o n individua l b a sis

c o nside ring sa fe ty

• T

re nc he s – a ddre sse d o n individua l b a sis c o nside ring sa fe ty

• Ab a ndo ne d I

nfra struc ture – de mo lish a nd pla c e d in wa ste fa c ility

Re vie w Re me dia tio n Pro g ra m

Portal Seep - 2014

Ha za rd Ca te g o rie s c o nt:

• Ab a ndo ne d Site Building s – de mo lish a nd pla c e d in wa ste

fa c ility

• T

a iling s – pla c e d in T SCA o r WRSCA

• No n-Ha za rdo us Wa ste – c o lle c te d a nd pla c e d in wa ste

fa c ility

• Unfire d E

xplo sive s - a sse sse d b y e xplo sive s e xpe rt during re me dia tio n a nd a ddre sse d b a se d o n re c o mme nda tio ns

• Ha za rdo us wa ste – c o lle c te d a nd dispo se d o f o ffsite a t

lic e nse d fa c ility

• Se dime nt – no a c tio n re q uire d a t this time
• I

mpa c te d Wa te r – disc ha rg e d to surfa c e

Re vie w Re me dia tio n Pro g ra m

Ha za rd Ca te g o rie s c o nt:

• Wa ste Ro c k
• Hig h risk ha s de mo nstra te d po te ntia l to c a use do wng ra die nt

impa c ts a nd is pre se nt a t Ca mla re n, K idne y Po nd, T re a c y a nd We st Ba y with a to ta l vo lume o f 41,214 m3

• Mo de ra te risk ha s de mo nstra te d minima l po te ntia l to c a use

do wng ra die nt impa c ts a nd is pre se nt a t Burnt I sla nd, Go o dro c k, K idne y Po nd, Murra y L a ke , a nd Sto rm Pro pe rty with a to ta l vo lume o f 1,089 m3

• Hig h risk wa ste ro c k a t Ca mla re n will b e dispo se d o f in the T

SCA

• Hig h risk wa ste ro c k a t K

idne y Po nd a nd T re a c y will b e dispo se d

• f in the WRSCA
• Ma y pla c e mo de ra te risk wa ste ro c k b e lo w wa te r ta b le a t

Go o dro c k, Murra y L a ke , Sto rm Pro pe rty a nd T re a c y de pe nding

• n me tho d o f mine o pe ning c lo sure
• Mo de ra te risk wa ste ro c k is sub je c t to mo nito ring

Wa te r L ic e nc e T rig g e rs

• Ma jo r site s ha ve trig g e rs
• T

SCA - Ca mla re n

• WRSCA – K

idne y Po nd

• Ca mps – pro po se d a t Ca mla re n a nd K

idne y Po nd

• L

a ndfa rm – pro po se d a t Ca mla re n

• Mino r site s c urre ntly la c k trig g e rs due to

sc a le a nd type o f pro po se d wo rk

• Burnt I

sla nd, Go o dro c k, Murra y L a ke , Sto rm Pro pe rty, T re a c y, T ry Me , We st Ba y

Re vie w Re me dia tio n Pro g ra m - Upda te

• K

idne y Po nd Po rta l Se e p Wa te r Ma na g e me nt Syste m no lo ng e r pro po se d

• T
• po g ra phy sug g e sts tha t the wa ste ro c k pile s like ly dra in

into the we tla nd, c o ntrib uting to the b ulk o f Co C lo a ding s

• T

he wa te r q ua lity in the Po rta l sho we d lo we r Co C c o nc e ntra tio ns whe n c o mpa re d to sa mple s c ha ra c te rizing wa ste ro c k disc ha rg e

• L

imite d disc ha rg e fro m po rta l

• We st Ba y wa ste ro c k re q uire s no a c tio n
• I

mpa c ts no t o b se rve d in Go rdo n L a ke o r we tla nd tha t a re no t a ttrib ute d to b a c kg ro und c o nditio ns

• Wa te r q ua lity will b e mo nito re d a s pa rt o f Mo nito ring Pla n
• De sig n ro b ustne ss
• F

ina l fo rm o f T SCA a nd WRSCA b e ing re vise d to a c c o mmo da te 1:1000 ye a r sto rm e ve nt

Pe rmit Co mpo ne nts

Prio r to c o nstruc tio n (60 da ys o r e a rlie r)

• Co ntra c to r will sub mit (a nd I

NAC to pro vide to MVL WB):

• E

ro sio n, Se dime nt a nd Dra ina g e Co ntro l Pla n

• Upda te d Spill Co nting e nc y Pla n (if re q uire d)
• Upda te d Wa ste Ma na g e me nt Pla n (if re q uire d)
• L

a ndfa rm lo c a tio n (pro po se d lo c a tio n sub je c t to c ha ng e )

• Ca mp lo c a tio ns (pro po se d lo c a tio ns sub je c t to

c ha ng e )

• F

ina l e q uipme nt list

• A L

a nd Use Pe rmit a nd Wa te r L ic e nc e will b e re c e ive d (pe nding a ppro va l)

Pe rmit Co mpo ne nts

During re me dia tio n pro g ra m

• I

nspe c tio ns

• Co nstruc t fa c ilitie s
• T

SCA – prima rily ta iling s pre se nt a t Ca mla re n, a nd a dde d wa ste fro m Burnt Isla nd, Ca mla re n, Go o dro c k, Murra y L a ke , Sto rm Pro pe rty, T ry Me

• WRSCA – prima rily wa ste ro c k pre se nt a t K

idne y Po nd a nd a dde d wa ste fro m T re a c y, K idne y Po nd a nd We st Ba y

• L

a ndfa rm – hydro c a rb o n impa c te d so il fro m a ll site s, ide a lly c e ntra lly lo c a te d (inc luding mo nito ring we lls a t la ndfa rm fa c ilitie s)

• T

ra nspo rt impa c te d ma te ria l b e twe e n site s

• T
• b e de te rmine d b y c o ntra c to r, like ly b y truc k o n winte r ro a d o r

b a rg e

• Ba c kfill mine o pe ning s
• Mo de ra te risk wa ste ro c k b e lo w wa te r ta b le
• I

nde pe nde nt third pa rty c o nfirma to ry sa mpling a nd c o nstruc tio n mo nito ring

Pe rmit Co mpo ne nts

Po st re me dia tio n pro g ra m

• L
• ng te rm mo nito ring pla n will b e pre pa re d

during re me dia tio n

• Pro vide d to MVL

WB 6 mo nths prio r to pro je c t c o mple te d

• Pe rfo rma nc e mo nito ring o f c o nstruc te d fa c ilitie s
• Risk ma na g e d a re a s (c e a se mo nito ring o nc e

a ssumptio n o f lo w risk c o nfirme d)

• Do wng ra die nt wa te r q ua lity mo nito ring
• SNP sta tio ns pro po se d a t:
• Ca mla re n (T

SCA), K idne y Po nd (WRSCA), disc ha rg e sumps

Wa te r L ic e nc e Spe c ific Co mpo ne nts

During re me dia tio n pro g ra m

• Wa te r use
• Ca mps, winte r ro a d po rta g e c o nstruc tio n, dust

suppre ssio n, e q uipme nt de c o nta mina tio n

• Disc ha rg e s
• Ca mp wa ste wa te r (tre a te d, to so a k-a wa y pits)),

e q uipme nt de c o nta mina tio n (tre a te d if re q uire d), mine o pe ning de wa te ring (pre c e de nt fo r so a k-a wa y pits fo r mino r q ua ntitie s), la ndfa rm (tre a te d if re q uire d)

• Wa ste fa c ilitie s
• T

SCA a nd WRSCA: dry c o ve r (g e o me mb ra ne a nd so il la ye rs) syste ms with inte rio r a nd e xte rio r (do wng ra die nt) mo nito rs

Clo sing Co mme nts….

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