PH010-1 670 43 Grande Prairie Wembley WEST EDGE OF RIVER (SITE - - PowerPoint PPT Presentation

EAST EDGE OF EUREKA RIVER SI08-4 SI02-3 SI98-2 MANHOLE A R C H C U L V E R T AC CURB CRACKED AREA WEST EDGE OF RIVER 1/2 CULVERT CENTERLINE EXPOSED GRAVEL DRAIN

SITE 4

SI98-1 SI02-1 SI02-2 CRACK CRACK

PH010-2 (SITE 1) PH010-1 (SITE 2)

Dunvegan Hines Creek

Fairview

732 685 Peace 731 Rycroft Spirit River 64 49 2 682 729 685 726 730 Eureka River

Worsley

Cleardale Eureka River 725 681 677 724 Woking La Glace 59 723 724 672 677 733 674 670 736 43 Smoky River

Grande Prairie

Sexsmith Wembley Hines Creek Blueberry Mountain Wanham Peace R i v e r 719 672 43

A L B E R T A BRITISH COLUMBIA

SITE AREA (PH010-1, PH010-2)

Clear River

2

CREEK DAWSON

NOTES

MOVEMENT VECTOR SCALE 1:2,500,000

• 1. LOCATIONS OF TEST HOLES SI02-1 & SI02-2 ARE APPROXIMATE.
• 2. SLIDE FEATURES RECORDED USING A HAND HELD GPS.

SCALE 1:1500

40 20 60 80 m

S

N

W E

ML BDM DWP 1:1500 MAY 31, 2017 13351

2017 PH010 INSPECTION PLAN

H:\13000\13351 Geohazard Assessment - Peace RiverHigh Level (CON0017602)\Drafting\2017\BDM\13351 PH010.dwg - FIGURE 1 - Dec. 21, 2017

P E A C E R E G I O N ( P E A C E R I V E R / H I G H L E V E L ) P H 1 H W Y 7 2 6 : 2 S O U T H O F W O R S E L Y , S I T E S # 1 , # 2 & # 4 DWG No. 13351-PH010 Transportation

SCALE DESIGNED BY DRAWN BY DATE APPROVED BY FILE No.

KEY MAP - SCALE 1:1,500,000

SI08-4 SI02-3 SI98-2 MANHOLE AC CURB 1/2 CULVERT CENTERLINE EXPOSED GRAVEL DRAIN 594 5 9 6 5 9 8 600 594 5 9 6 5 9 8 6 6 2 604 6 6 6 8 610 612 614 595 5 9 5 6 600 605 6 5 6 1 610 615 6 1 5 6 1 5 6 2 620 620 6 2 5 625 625 630 630 630

E F F ' E '

SI98-1 SI02-1 SI02-2

SITE 4

OPTION 3 OPTION 1A OPTION 1B (PREFERRED OPTION) BACKSLOPE SLUMPING (SAME) SOME GRASS GROWING CLAY BANK EXPOSURE GRABEN SLIDE BLOCK PONDED WATER IN SAG POND IN DITCH (KITCHTON PLACED MATERIAL TO HELP DRAIN IT) (SAME) 65m LONG PATCH IN SOUTH BOUND LANE DIP IN HWY 30m LONG & 30-50mm WIDE CRACK WITH 25mm DROP STREAM GAUGING STATION 1-800-CANADA EROSION A R C H C U L V E R T CRACKS, POSSIBLY CONNECTED TO SLIDE

0.7m SCARP

SLIDE 2 OUTLINE (0.4m HIGHSCARP IN DITCH) MILLED AND PATCHED AT BOTH EDGES OF SLIDE TO SMOOTHEN IT OUT: REFLECTIVE CRACKS HAVE RE-APPEARED 30mm WIDE x10mm DROP BEAVER DAM ACTIVE SLIDE ZONE - FURTHER RETROGRESSION EROSION AT OUTLET OF 1/2 CULVERT MORE MOVEMENT IN SLIDE 1m HIGH SCARP (MORE MOVEMENT) 1m HIGH SCARP 0.8m SCARP 3m WIDE SCARP CRACK AREA OFF EAST SIDE OF HWY AND 0.7m DEEP LEANING TREES

16m

300mm SCARP GRABEN DEVELOPING OLDER SLUMP RIVERBANK SLUMPING ~20m LONG 15m LONG CRACK IN OUTSIDE WHEEL PATH OF NORTHBOUND LANE 35m LONG CRACK ALONG CENTER AND OUTSIDE WHEEL PATH OF NORTHBOUND LANE (SAME) 10m LONG SUBGRADE FAILURE IN SOUTHBOUND LANE; RUTS ~120mm DEEP (PATCHED IN 2014) A.C. CURB IS BREACHED HERE, AND WATER RUNS OUT & CREATED 0.5m DEEP x 1.2m WIDE x 3.0m LONG EROSION RILLING ON SIDESLOPE (NEEDS REPAIR) DRIFTWOOD PILED UP FROM HIGH WATER (~3.5m ABOVE PRESENT WATER LEVEL) VERY ACTIVE SLIDE BLOCK, LARGE OPEN TOP / SIDE SCARPS (

≤3 m HIGH); MORE

MOVEMENT SINCE 2015; TELUS CABLE EXPOSED DIP RIPRAP (HAS A GAP IN CENTRE OF IT) APPEARS TO BE A SLIDE CRACK (~50m LONG)

PH010-2 (SITE 1) PH010-1 (SITE 2)

23m LONG CRACK NEW SCARP ALONG HIGHWAY EMBANKMENT

NOTES

• 1. LOCATIONS OF TEST HOLES SI02-1 & SI02-2 WERE APPROXIMATED ONLY.
• 2. SLIDE SITE FEATURES RECORDED USING A HAND HELD GPS.
• 3. PROPOSED PILE WALL LOCATIONS.
• 4. PROPOSED RIP RAP ARMOUR.
• 5. MOVEMENT VECTORS 1:3,000 mm/yr.
• 6. GROUND SURFACE CONDITIONS WERE DEVELOPED BASED ON LIDAR DATA.
• 7. MORE SLIDE MOVEMENT AT SITE 1 SINCE LAST YEAR. SUBSTANTIALLY MORE

CHANGE IN MOVEMENT AT SITE 2 CLOSER TO RIVER WITH MORE CRACKING / SLUMPING, BUT LESS MOVEMENT UP HIGHER NEARER HIGHWAY.

• 8. CONDITIONS ON MAY 31, 2017 SHOWN IN RED.

TEST HOLE LOCATIONS

LEGEND

OVERHEAD POWER LINE CRACKS SLIDE SCARP / CRACK

1

PHOTO AND DIRECTION PONDED WATER DRAINAGE MOVEMENT VECTOR

100 120m 80 60 40

SCALE 1:2000

20

ML BDM DWP 1:2000 MAY 31, 2017 13351

2017 PH010-1 INSPECTION PLAN

H:\13000\13351 Geohazard Assessment - Peace RiverHigh Level (CON0017602)\Drafting\2017\BDM\13351 PH010-1-1.dwg - 2 - Dec. 21, 2017

P E A C E R E G I O N ( P E A C E R I V E R / H I G H L E V E L ) P H 1

• 1

H W Y 7 2 6 : 2 S O U T H O F W O R S L E Y , S I T E S # 1 , # 2 & # 4 DWG No. 13351-PH010-1-1 Transportation

SCALE DESIGNED BY DRAWN BY DATE APPROVED BY FILE No.

HIGHWAY PATCH

S

N

W E 2 9 7 11

5

8 10 3 4

6 1

ELEVATION (m) ELEVATION (m) DISTANCE (m)

580 590 600 610 620 630 580 590 600 610 620 630 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340

ELEVATION (m) ELEVATION (m) DISTANCE (m)

580 590 600 610 620 630 580 590 600 610 620 630 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320

ELEVATION (m) ELEVATION (m) DISTANCE (m)

590 600 610 620 630 590 600 610 620 630 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240

CLAY

SI98-2

GRAVEL CLAY 15 13 11 24 13 CLAY

SI98-1

6 GRAVEL CLAY 11 12 13 13

SECTION D-D' (SITE 6 - PH26 NORTH SIDE OF RIVER) SECTION E-E' (SITE 1) SECTION F-F' (SITE 2)

EUREKA RIVER EUREKA RIVER EUREKA RIVER ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? HWY CL ? ? ? ? ? SITE 1 SLIDE SCARP SITE 2 SLIDE SCARP HWY CL ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

? ? ?

?

? ?

HWY CL DEPRESSED AREA ? ? ? ? ? ? ? ? ? ? ? ?

GRAVEL (FILL)

SI11-5

7 7 10 7 5 7 4 6 7 6 6 6 7 9 10 7 9 7 7 10 10 34 CLAY (FILL) CLAY CLAY (TILL)

• 1. DATA CONCERNING THE VARIOUS STRATA HAVE BEEN OBTAINED

AT THE TEST HOLE LOCATIONS ONLY. THE SOIL STRATIGRAPHY BETWEEN TEST HOLES HAS BEEN INFERRED FROM GEOLOGICAL EVIDENCE AND SO MAY VARY FROM THAT SHOWN.

• 2. THE CROSS SECTIONS ARE BASED ON OCTOBER 2007 LIDAR INFORMATION.

THE ELEVATIONS OF TH98-1 AND TH98-2 WERE NOT KNOWN, AND WERE ESTIMATED TO MATCH LIDAR ELEVATIONS.

NOTES

SPT N VALUE

LEGEND

15 ? ?

INFERRED SLIDE SURFACE INFERRED GROUND SURFACE BELOW RIVER PROPOSED RIPRAP ARMOUR

? ?

MOVEMENT ZONE IN INCLINOMETERS

ML BDM DWP 1:1000 MAY 31, 2017 13351

CROSS-SECTIONS D-D', E-E' & F-F'

H:\13000\13351 Geohazard Assessment - Peace RiverHigh Level (CON0017602)\Drafting\2017\BDM\13351 PH010-1-2.dwg - 3 - Dec. 21, 2017

P E A C E R E G I O N ( P E A C E R I V E R / H I G H L E V E L ) P H 1

• 1

H W Y 7 2 6 : 2 S O U T H O F W O R S E L Y , S I T E S # 1 , # 2 & # 4 DWG No. 13351-PH010-1-2 Transportation

SCALE DESIGNED BY DRAWN BY DATE APPROVED BY FILE No.