Geohazard Assessment - 2012 Slide TourGP-8a, Hwy 40:36, McIntyre Mine

Note: Photos taken on July 2012Note: Photos taken on July 2012

August 20122012-1002

File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012

Photo 1

Photo 1a

GP-8a, Site II, Hwy 40:36Page 1 of 4

· · · ·

Site I Looking south (west) (towards Grande Cache) at slide (at curve)A view along sideslope guardrail

East flank of headscarp crack propagates from valley sideslope towards backslope ditchPavement patched area. Subsidence very subtle, crack pattern still fuzzy, but reflected back despite patchingSlide movement down valley (to left of photo)3 SI installations along down the sideslope (left of photo)

· Looking south -

Another view along backslope ditch

Slide Move

ment

Slide Move

ment

WestWest

WestWest

Geohazard Assessment - 2012 Slide TourGP-8a, Hwy 40:36, McIntyre Mine

Note: Photos taken on July 2012Note: Photos taken on July 2012

August 20122012-1002

File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012

Photo 2

Photo 2bPhoto 2a

GP-8a, Site I, Hwy 40:36Page 2 of 4

· Site I Looking North (east) (away from Grande Cache)

Another view headscarp (patch area)

· Looking North

Headscarp crack propagates from sideslope to meander cris-cross centreline to run to backslope ditch

· A view of headscarp crack from backslope ditch

Headscarp crack loops to backslope ditch

Slide Movement

Slide Movement

EastEast

EastEast EastEast

BB

AA

AA

BB

GP-8a, Site II, Hwy 40:36Page 3 of 4

Geohazard Assessment - 2012 Slide TourGP-8a, Hwy 40:36, McIntyre Mine

Note: Photos taken on July 2012Note: Photos taken on July 2012

August 20122012-1002

File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012

Photo 3

Photo 3b

Photo 3a

· · ·

Site IILooking south (west) (towards Grande Cache)Small dip area (south one) (about 20m width)

Dip area with headscarp crack (width about 20m along roadway) at close to centrelineValley side sideslope very gentle (see Photo 3b and Photo 4c).Dip maybe effect of degradation of previous fill (possible previous mine waste dump fills)

Crack - Close up (South dip area)

· ·

Looking south (west) (towards Grande Cache)Valley side sideslope very gentle. Site distress likely from fill degradation. Serious sliding failure may be remote

Slide Moveme

ntSlide M

ovement

~20 m~20 m

WestWest

WestWestWestWest

GP-8a, Site II, Hwy 40:36Page 4 of 4

Geohazard Assessment - 2012 Slide TourGP-8a, Hwy 40:36, McIntyre Mine

Note: Photos taken on July 2012Note: Photos taken on July 2012

August 20122012-1002

File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012File No: 2012_1002a06_Photopages_GP-8a_Hwy 40_36_McIntyre Mine_August_2012

Photo 4

Photo 4b

Photo 4a

Photo 4c

· · ·

Site II Looking north(east) (away from Grande Cache)Adjacent 2nd small depth area (north one)(about 20m width)

A transverse crack can be located at this distress area Crack has grown to centrelineDistress area can be demarcated by two "Curvature Signs" (A @ sideslope) (B @ backslope)

· Looking north (east)

Crack - Close up

· Looking north

Crack - Close up · ·

Looking north (east) (away from Grande Cache)Valley side sideslope very gentle. Serious sliding failure may be remoteDistress likely from fill degradation

Road CurvatureSign (Side Slope)Road Curvature

Sign (Side Slope)AA

Road CurvatureSign (Back Slope)Road Curvature

Sign (Back Slope)

BB

Road CurvatureSign (Side Slope)Road Curvature

Sign (Side Slope)

AA

Sliding MovementSliding Movement

~20 m~20 m

EastEast

EastEast

WestWest EastEast

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