September 5, 2008 - transportation.alberta.ca Landslide… · At the time of the Spring 2008 instrument readings, extensive cracking was noted along the pile wall along the downslope

September 5, 2008 CG25277 Mr. Ross Dickson Alberta Transportation 2nd Floor, 803 Manning Road NE Calgary, AB T2E 7M8 Dear Ross: Re: Southern Region Geohazard Assessment Spring 2008 Instrumentation Monitoring Results Site S2: Highway 22:14, PRIDDIS This letter documents the Spring 2008 instrument readings at the above-noted site and can be inserted into Section C of the site binder. The updated site plan, instrument data, and plots are also attached and can be inserted into Section D of the site binder.

1.0 OBSERVATIONS

1.1 Field Program and Instrumentation Status

Four slope inclinometers and three pneumatic piezometers were read at the S2 – Priddis site on Hwy 22:14, on May 21, 2008 by Mr. Bryan Bale of AMEC Earth and Environmental (AMEC), a division of AMEC Americas Limited. The SI’s were read using an imperial Slope Indicator probe and Digitilt Datamate readout manufactured by Durham Geo Slope Indicator (DGSI). Inclinometer reading depths were referenced to the top of the SI casing, except for SI #9 and #11, which were referenced to the ground surface. The SI’s and piezometers at the site were installed to monitor the effectiveness of a pile wall and dewatering pumps installed to remediate past slope instablility. Please refer to Figure S2-1 attached in Section D for site layout and instrument locations. Figure S2-2 illustrates the location of the instruments that remain operational at the site. At the time of the readings there were four SI’s and three piezometers functioning at this site At the time of the Spring 2008 instrument readings, extensive cracking was noted along the pile wall along the downslope side of the road. It also appeared that some undermining of the pavement along the downslope edge of the road had occurred due to water infiltrating into the cracks and washing out the road bed material.

AMEC Earth & Environmental A division of AMEC Americas Limited 221 – 18th Street SE Calgary, AB, CANADA T2E 6J5 Tel +1 (403) 248-4331 Fax +1 (403) 248-2188 www.amec.com

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\600 Reports\Spring 2008\Spring 2008 Instrumentation Monitoring - S2.doc Page 1

Alberta Transportation Instrumentation Monitoring Results Southern Region Site S2 – Highway 22:14, Priddis September 5, 2008 2.0 INTERPRETATION AND RECOMMENDATIONS

2.1 General

Plots of the SI and piezometer data are presented in Section D and are summarized in the following sections. Where applicable, the resultant movement has also been plotted.

2.2 Zones of Movement

No new zones of movement have been noted since the last reading in September 2007. Zones of previous movement and historical results are summarized in Table S2-1.

2.3 Interpretation of Monitoring Results and Recommendations

2.3.1 Interpretation

Plots of the instrument readings from the Priddis site are included in Section D. A summary of each of the SI readings is presented below. Due to the resetting of the initial data sets to the Spring 2000 values, previously identified movement zones that are being tracked are also noted. AMEC BH#2 (Figures S2-3 to S2-7) The data from previous readings of this SI showed downslope and cross-slope

movement in a zone between approximately 5.3 m and 6.6 m depth. Due to continuing slope movement, the probe has not been able to pass below approximately 6.5 m since the Fall 2005 readings. From the fall of 2005 to the spring of 2008, the readings have been taken to a depth of 6.3 to 7.0 m. The instrument was not read in May 2008 since the zone above 6.3 m has not shown movement. When referring to Figures S2-3 to S2-7, please note that the plot of any given data set after May 2005 is valid only above the reading depths noted above.

This SI is no longer useful for measuring displacement since any movement

detected above the blockage at 6.3 m is relative to a moving reference point. Any noted movement above this zone would not include the movement rate of the reference point and would be inaccurate.

SI #4 (Figures S2-8 and S2-9) The SI was found blocked at 1.5 m depth and the planned reading could not be

completed to full depth. On June 19th, 2008 a tape measure was able to pass below 1.5 m, therefore it is thought that the blockage was likely due to ice. The SI will be read in the fall and some water will be removed to reduce the risk of ice blockage occurring again.


Alberta Transportation Instrumentation Monitoring Results Southern Region Site S2 – Highway 22:14, Priddis September 5, 2008 SI #6 (Figures S2-10 to S2-12) The SI was found blocked at 6.1 m. This blockage coincides with the previously

identified movement zone at approximately 5.8 m depth and shown on Figure S2-12. Figure S2-12 demonstrates a clear trend of downslope movement around 4 to 5 m depth since the spring of 2002 with an increase in movement rate between the Spring 2007 and Fall 2007 readings. The SI has likely deformed to the extent that the probe can no longer pass the movement zone. The SI is no longer functional.

Figure S2-11 shows no significant increase in incremental cross-slope

(B-direction) displacement above 5.5 m depth since the Fall 2005 readings. SI #9 (Figures S2-13 and S2-14) There has been no significant movement since the previous readings at this

instrument. As previously noted, the full depth of 35’ could not be reached due to an accumulation of debris at the bottom of the casing. Therefore, for the purposes of plotting the current data, the Fall 2002 reading from 35’ (i.e. the last set of readings obtained at depth of 35’) were used to replace the missing reading at 35’.

SI #11 (Figures S2-15 and S2-16) There has been no significant movement since the previous readings at this

instrument. As previously noted, the full depth of 37’ could not be reached due to an accumulation of debris at the bottom of the casing. Therefore, for the purposes of plotting the current data, the Fall 2002 reading from 37’ (i.e. the last set of readings obtained at depth of 37’) were used to replace the missing reading at 37’.

The SI’s in AMEC BH #1 and SI#10 and the settlement gauge in AMEC BH #1A could not be read. They have been paved over since the Spring 2005 readings. The readings for piezometers 34397, 34398, and 34399 were all measured as approximately 0 kPa. Piezometer #34396 has an audible leak in the segment of excess cable coiled at surface; therefore no actual reading was obtained. The piezometer data plots (Figures S2-17 to S2-20) show that the pressure measured by each of the functioning piezometers in the spring of 2008 is consistent with past readings. However, each of the piezometers has a significant length of unprotected lead tubes coiled at ground surface and it is hypothesized that they may have been damaged and be inaudibly leaking, which could be causing the measured pressures of 0 kPa.


Alberta Transportation Instrumentation Monitoring Results Southern Region Site S2 – Highway 22:14, Priddis September 5, 2008 In summary, the Spring 2008 data shows that:

• The movement at 5 m in SI #6 has continued and has sheared off the SI rendering it inoperable. Movement will likely continue, however, magnitudes and rates cannot be confirmed with the existing SI #6.

• SI’s #9 and #11 in the westbound lane of the road continue to show no significant

movement. This suggests that the pile wall along the downslope edge of the road is supporting the road surface despite continued settlement and cracking along the downslope edge of the road (i.e. downslope of the pile wall).

• The piezometers on the upslope side of the road all measured near zero pore pressure.

This is consistent with past readings and suggests that the automated pumping wells continue to be effective and/or that the piezometers are not functioning properly.

2.3.2 Recommendations

Based on the monitoring results and observations, AMEC recommends that:

• The semi-annual instrument monitoring should be continued. • The annual assessments should be continued.

• The maintenance contractor should restore access to the paved-over instruments.

• The operating status of the automatic pumps should be further checked as per

discussion in the 2006 and 2007 annual inspection report. Also, as per discussions on site during the 2007 annual inspection, new piezometers (with flush-mounted casing protectors) should be installed adjacent to the existing piezometers in order to replace the questionable existing piezometers and provide a reliable means for continuing to monitor the effectiveness of the pumping wells.

3.0 INSTRUMENTATION REPAIRS AND MAINTENANCE REQUIRED

• Extend SI’s #9 and #11 above the pile wall and install new flush-mount casing protectors to ensure that these SI’s are not destroyed.

• Recover SI #10 and BH1 settlement gauge which have been buried beneath asphalt.

• Bail down the water level in SI #4 to prevent is blockage from occurring in the future.

• Replace the piezometers on the south side of the road. A proposal for this work will be

prepared by AMEC.


Alberta Transportation Instrumentation Monitoring Results Southern Region Site S2 – Highway 22:14, Priddis September 5, 2008 AMEC does not recommend replacing or retrofitting the SI’s below the pile wall with Measurand SAA cables because the depth of landslide movement is known and the repaired SI’s in the highway can be used for future monitoring.


Alberta Transportation Instrumentation Monitoring Results Southern Region Site S2 – Highway 22:14, Priddis September 5, 2008

TABLE S2-1 SPRING 2008 – PRIDDIS

Slope Inclinometer Instrumentation Reading Summary

Date Monitored: May 21, 2008 SINCE PREVIOUS READING

INSTRUMENT DATE INITIALIZED

TOTAL CUMULATIVE RESULTANT

MOVEMENT AT DEPTH SINCE

INITIAL READING

MAXIMUM RATE OF

MOVEMENT CURRENT STATUS

DATE OF PREVIOUS READING

INCREMENTAL MOVEMENT

RATE OF MOVEMENT

CHANGE IN RATE OF

MOVEMENT

SI #4 5/18/20001 No movement detected N/A

Operational. Ice blockage at 1.5m on

May 21, 2008. Snapped off at ground

level.

9/17/2007 N/A N/A N/A

SI #6 6/27/20001 37mm between 0.7 and 5.6m at

342°

26mm/yr between May and October

2005

Pinched off at 6.1 m 9/17/2007 N/A N/A N/A

SI #9 4/26/20011 No movement detected N/A Operational. 9/17/2007 0 0 0

SI #10 4/26/20011

2mm between 3.5 and 4.7m

and between 5.9 and 7.1m


2002 Paved over 5/17/2005 N/A N/A N/A

SI #11 6/27/20001 No movement detected N/A Operational 9/17/2007 N/A N/A N/A

SI BH#1 4/19/2001 No movement detected N/A Paved over 6/4/2004 N/A N/A N/A

SI BH#2 4/19/2001 17mm at 6.0 m

at 4° as of 5/17/2005.


2002

Casing deformed due to accumulated

movement and SI probe unable to pass

below 6.3m depth. See report for

discussion.

5/22/2005 N/A N/A N/A

1Readings by previous consultants have not been included in the calculations of total movement.



TABLE S2-2 SPRING 2008 – PRIDDIS

Piezometer Instrumentation Reading Summary

Date Monitored: May 21, 2008

INSTRUMENT DATE INITIALIZED

TIP ELEVATION*

(m)

GROUND ELEVATION*

(m)

CURRENT STATUS

MAXIMUM PIEZOMETRIC ELEVATION

(m)

CURRENT PIEZOMETRIC ELEVATION

(m)

PREVIOUS PIEZOMETRIC ELEVATION

(m)

CHANGE IN CALCULATED EQUIVALENT

GROUNDWATER ELEVATION SINCE

PREVIOUS READING (m)

PORE WATER PRESSURE RATIO

(ru)

34396 1/5/1993 97.50 103.00 Leaking 100.31 <97.50 <97.50 N/A 0.00 34397 1/5/1993 98.75 103.00 Operational 100.16 98.92 98.85 +0.07 0.02 34398 1/5/1993 96.10 102.00 Operational 97.73 <96.10 <96.10 N/A 0.00 34399 1/5/1993 98.60 103.00 Operational 100.01 <98.60 98.61 N/A 0.00

*Relative to assumed site benchmark of 100m.



4.0 CLOSURE

This report has been prepared for the exclusive use of Alberta Transportation for the specific project described herein. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it are the responsibility of such third parties. AMEC Earth & Environmental, a division of AMEC Americas Limited, cannot accept responsibility for such damages, if any, suffered by any third party as a result of decisions made or actions based on this report. This report has been prepared in accordance with accepted geotechnical engineering practices. No other warranty, expressed or implied, is made. We trust that this meets your needs at this time. Please contact the undersigned if you have any questions or require any further information. Respectfully Submitted, AMEC Earth & Environmental, a division of AMEC Americas Limited Bryan Bale, M.Sc., E.I.T. Andrew Bidwell, M.Eng., P.Eng. Geotechnical Engineer Associate Geological Engineer APEGGA Permit to Practice No. P-04546 Reviewed by: Pete Barlow, M.Sc., P.Eng. Principal Geotechnical Engineer


SECTION D Southern Region Geohazard Assignment

Site S2 – Priddis Spring 2008 Instrument Data and Plots

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\600 Reports\Spring 2008\Spring 2008 Instrumentation Monitoring - S2.doc

Site No.: S2 Probe: 27087Location: Priddis Readout: Datamate

File Number 22:14 Temp.: 9°CCable: Imperial Read by: Bryan Bale

A+ A- B+ B-

4 21-May-08 0.33 47.83 340° Feels snapped at 5'. Not read.

6 21-May-08 2.75 38.67 340° Feels pinched off at 20'. Not read.

9 21-May-08 -0.92 33 333° -1330 1320 -1715 1705 Read to ground level.

10 paved over

11 21-May-08 -0.83 35.25 20° Read to ground level.

BH-1 paved over

BH-2 21-May-08 3.6 23 320° Read to A- groove, 0.3' above ground.

PIEZO.# Date Field Reading (psi) Comments/Observations

34396 21-May-08 Leak at surface.

34397 21-May-08 Slowly losing pressure. BH-1A Paved over.

34398 21-May-08

34399 21-May-08

Arrival Time 13:35 Departure Time 15:20

Damage to any Instruments

Slope Conditions and Groundwater Seepage Observations No change noted.

Pavement Settlement/Cracking Noted No change noted.

Comments/ Observations

ALBERTA INFRASTRUCTURE & TRANSPORTATIONSOUTHERN REGION

SLOPE INCLINOMETER MONITORING FIELD SUMMARYSPRING 2008

SLOPE INCLINOMETER READINGSCurrent Bottom Depth ReadingsSI # Date Filename

None.

SETTLEMENT GAUGE READINGPNEUMATIC PIEZOMETER READINGS

Gauge Name

DateDepth to Casing Bottom

Comments/Observations

DAILY INSPECTION REPORT

Azimuth of A+

Groove

Casing DepthRelative to

TOC

0.0

0.0

0.0

1.7

Stickup (ft)

Elevation

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-100 -50 0 50 100

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10

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Depth

(m)

-50 -25 0 25 50

11

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8

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6

5

4

3

2

1

0

-50 -25 0 25 50

LEGEND

Initial 19 Mar2001

16 Jul2001

16 Oct2001

2 May2002

16 Oct2002

12 May2003

8 Jul2003

1 Nov2003

3 Jun2004

12 Nov2004

17 May2005

27 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-3

October 2005 onwards:

Probe will not pass

beyond 6.3 m depth.

Cumulative DeflectionDirection A

Deflection (mm)

Incremental DeflectionDirection A

Deflection (mm)

Ref. Elevation m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\priddisBh2.gtl

S2-22:14 Priddis, Inclinometer AMEC BH#2AIT

AMEC Earth & Environmental - Calgary, AB

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

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5

4

3

2

1

0

-50 -25 0 25 50 11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-25 -12.5 0 12.5 25

11

10

9

8

7

6

5

4

3

2

1

0

-25 -12.5 0 12.5 25

LEGEND

Initial 19 Mar2001

16 Jul2001

16 Oct2001

2 May2002

16 Oct2002

12 May2003

8 Jul2003

1 Nov2003

3 Jun2004

12 Nov2004

17 May2005

27 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-4

October 2005 onwards:

Probe will not pass

beyond 6.3 m depth.

Cumulative DeflectionDirection B

Deflection (mm)

Incremental DeflectionDirection B

Deflection (mm)

Ref. Elevation m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\priddisBh2.gtl

S2-22:14 Priddis, Inclinometer AMEC BH#2AIT


Figure S2-5

S2-22:14 Priddis, Inclinometer BH#2A-Direction Displacement (5.3 m Depth Relative to 6.6 m Depth)

0

2

4

6

8

10

12

14

16

1-Oct-00 19-Apr-01 5-Nov-01 24-May-02 10-Dec-02 28-Jun-03 14-Jan-04 1-Aug-04 17-Feb-05 5-Sep-05

Dis

plac

emen

t (m

m)

Probe would not pass below 6.3 m in October 2005. No further movement can be tracked in this zone.

Figure S2-6

S2-22:14 Priddis, Inclinometer AMEC BH#2B-Direction Displacement (5.3 m Depth Relative to 6.6 m Depth)

0

1

2

3

4

5

6

7

8


Dis

plac

emen

t (m

m) Probe would not pass below

6.3 m in October 2005. No further movement can be tracked in this zone.

Figure S2-7

AMEC BH#2(SI) Resultant Displacement(5.3 m Depth Relative to 6.6 m Depth)

S2-22:14 Priddis

0

2

4

6

8

10

12

14

16

18


Mag

nitu

de o

f Res

ulta

nt D

ispl

acem

ent (

mm

)

May 2, 20021.7 mm displacement at 20 degrees bearing.

November 12, 200416.0 mm displacement at 5 degrees bearing.

Probe would not pass below 6.3 m in October 2005. No further movement can be tracked in this zone.

14

12

10

8

6

4

2

0

Depth

(m)

-50 -25 0 25 50

14

12

10

8

6

4

2

0

-50 -25 0 25 50

14

12

10

8

6

4

2

0

Depth

(m)

-20 -10 0 10 20

14

12

10

8

6

4

2

0

-20 -10 0 10 20

LEGEND

Initial 18 May2000

15 Sep2000*

26 Apr2001

16 Oct2001

21 May2002

16 Oct2002

8 Jul2003

22 Oct2003

3 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

Figure S2-8


Deflection (mm)


Deflection (mm)

Ref. Elevation 1291.7 m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\PRID4_reinitialized Oct 2006.GTL

S2-22:14 Priddis, Inclinometer Si#4 NewRefAIT

Sets marked * include zero shift and/or rotation corrections.


14

12

10

8

6

4

2

0

Depth

(m)

-50 -25 0 25 50

14

12

10

8

6

4

2

0

-50 -25 0 25 50

14

12

10

8

6

4

2

0

Depth

(m)

-20 -10 0 10 20

14

12

10

8

6

4

2

0

-20 -10 0 10 20

LEGEND

Initial 18 May2000

15 Sep2000*

26 Apr2001

16 Oct2001

21 May2002

16 Oct2002

8 Jul2003

22 Oct2003

3 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

Figure S2-9


Deflection (mm)


Deflection (mm)

Ref. Elevation 1291.7 m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\PRID4_reinitialized Oct 2006.GTL

S2-22:14 Priddis, Inclinometer Si#4 NewRefAIT



12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

12

11

10

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8

7

6

5

4

3

2

1

0

-50 -25 0 25 50 12

11

10

9

8

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4

3

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1

0

Depth

(m)

-50 -25 0 25 50

12

11

10

9

8

7

6

5

4

3

2

1

0

-50 -25 0 25 50

LEGEND

Initial 2 May2002

21 May2002

16 Oct2002

12 May2003

1 Nov2003

3 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

Figure S2-10


Deflection (mm)


Deflection (mm)

Ref. Elevation m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\PRID06_R.GTL

S2-22:14 Priddis, Inclinometer SI #6AIT


12

11

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8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

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8

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-50 -25 0 25 50 12

11

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Depth

(m)

-20 -10 0 10 20

12

11

10

9

8

7

6

5

4

3

2

1

0

-20 -10 0 10 20

LEGEND

Initial 2 May2002

21 May2002

16 Oct2002

12 May2003

1 Nov2003

3 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

Figure S2-11


Deflection (mm)


Deflection (mm)

Ref. Elevation m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\PRID06_R.GTL



Figure S2-12

S2-22:14 Priddis, Inclinometer SI#6A-Direction Displacement (5.6 m Depth Relative to 0.7 m Depth)

0

5

10

15

20

25

30

35

40

4/19/2001 9/1/2002 1/14/2004 5/28/2005 10/10/2006 2/22/2008

Dis

plac

emen

t (m

m)

12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

12

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-50 -25 0 25 50 12

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Depth

(m)

-10 -5 0 5 10

12

11

10

9

8

7

6

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4

3

2

1

0

-10 -5 0 5 10

LEGEND

Initial 26 Apr2001

2 May2002

16 Oct2002

12 May2003

22 Oct2003

4 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-13


Deflection (mm)


Deflection (mm)

Ref. Elevation m

R:\Projects\Calgary Geo\CG25277 - AIT Southern Region 2008\400 Data\S2 - Priddis\prid09.gtl



12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

12

11

10

9

8

7

6

5

4

3

2

1

0

-50 -25 0 25 50 12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-10 -5 0 5 10

12

11

10

9

8

7

6

5

4

3

2

1

0

-10 -5 0 5 10

LEGEND

Initial 26 Apr2001

2 May2002

16 Oct2002

12 May2003

22 Oct2003

4 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-14


Deflection (mm)


Deflection (mm)

Ref. Elevation m




12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

12

11

10

9

8

7

6

5

4

3

2

1

0

-50 -25 0 25 50 12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-20 -10 0 10 20

12

11

10

9

8

7

6

5

4

3

2

1

0

-20 -10 0 10 20

LEGEND

Initial 27 Jun2000

13 Sep2000

2 May2002*

16 Oct2002

12 May2003

4 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-15


Deflection (mm)


Deflection (mm)

Ref. Elevation m





12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-50 -25 0 25 50

12

11

10

9

8

7

6

5

4

3

2

1

0

-50 -25 0 25 50 12

11

10

9

8

7

6

5

4

3

2

1

0

Depth

(m)

-20 -10 0 10 20

12

11

10

9

8

7

6

5

4

3

2

1

0

-20 -10 0 10 20

LEGEND

Initial 27 Jun2000

13 Sep2000

2 May2002*

16 Oct2002

12 May2003

4 Jun2004

12 Nov2004

17 May2005

25 Oct2005

10 May2006

18 Oct2006

22 May2007

17 Sep2007

21 May2008

Figure S2-16


Deflection (mm)


Deflection (mm)

Ref. Elevation m





Figure S2-17

HIGHWAY 22:14 - PRIDDIS - #34396

94

96

98

100

102

104

Jan-93 Jan-94 Jan-95 Jan-96 Jan-97 Jan-98 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09DATE

ELEV

ATI

ON

(m)

Ground Surface

Piezo 34396

Leak noted in cable. Readings are invalid after this date.

Figure S2-18


94

96

98

100

102

104


ELEV

ATI

ON

(m)

Ground Surface

Piezo 34397

Figure S2-19


94

96

98

100

102

104


ELEV

ATI

ON

(m)

Ground Surface

Piezo 34398

Figure S2-20


94

96

98

100

102

104


ELEV

ATI

ON

(m)

Ground Surface

Piezo 34399

TABLE S2-1PROJECT:

File No. HWG 22:14DESCRIPTION: 11 KM WEST OF PRIDDIS

PIEZOMETER:NUMBER: 34396STATION: LOCATION: SOIL TYPE: CLAY TILL SOIL DENSITY (AVG.): 1790 kg/m3ELEVATION INITIAL GROUND: 103.00 m PIEZOMETER TIP: 97.50 m

DATE PRESENT FIELD PIEZO PIEZO Ru Rue REMARKSGROUND READING HEAD ELEV.

ELEV. (above tip)(m) (kpa) (m) (m)

5-Jan-93 103.00 13.0 1.33 98.83 0.13 0.002-Feb-93 103.00 8.0 0.82 98.32 0.08 -0.05

23-Feb-93 103.00 7.0 0.71 98.21 0.07 -0.0623-Mar-93 103.00 3.0 0.31 97.81 0.03 -0.106-Apr-93 103.00 3.0 0.31 97.81 0.03 -0.10

27-Apr-93 103.00 26.0 2.65 100.15 0.26 0.1329-Apr-93 103.00 22.0 2.24 99.74 0.22 0.094-May-93 103.00 11 1.12 98.62 0.11 -0.028-Jun-93 103.00 6 0.61 98.11 0.06 -0.0723-Jul-93 103.00 9 0.92 98.42 0.09 -0.0431-Aug-93 103.00 13 1.33 98.83 0.13 0.0022-Sep-93 103.00 13 1.33 98.83 0.13 0.0029-Sep-93 103.00 8 0.82 98.32 0.08 -0.0513-Oct-93 103.00 7 0.71 98.21 0.07 -0.0610-Nov-93 103.00 4 0.41 97.91 0.04 -0.097-Dec-93 103.00 3 0.31 97.81 0.03 -0.105-Jan-94 103.00 9 0.92 98.42 0.09 -0.04

25-Jan-94 103.00 8 0.82 98.32 0.08 -0.053-Feb-94 103.00 9 0.92 98.42 0.09 -0.04

15-Feb-94 103.00 12 1.22 98.72 0.12 -0.011-Mar-94 103.00 12 1.22 98.72 0.12 -0.0123-Mar-94 103.00 1 0.10 97.60 0.01 -0.1213-Apr-94 103.00 20 2.04 99.54 0.20 0.073-May-94 103.00 6 0.61 98.11 0.06 -0.0710-May-94 103.00 6 0.61 98.11 0.06 -0.072-Jun-94 103.00 9 0.92 98.42 0.09 -0.04

16-Jun-94 103.00 19 1.94 99.44 0.19 0.0621-Jun-94 103.00 9 0.92 98.42 0.09 -0.0428-Jun-94 103.00 6 0.61 98.11 0.06 -0.074-Aug-94 103.00 10 1.02 98.52 0.10 -0.03

19-Aug-94 103.00 13 1.33 98.83 0.13 0.0019-Sep-94 103.00 10 1.02 98.52 0.10 -0.037-Oct-94 103.00 10 1.02 98.52 0.10 -0.034-Nov-94 103.00 12 1.22 98.72 0.12 -0.0127-Jun-96 103.00 0.1 0.01 97.51 0.00 -0.137-Dec-96 103.00 0.1 0.01 97.51 0.00 -0.131-May-97 103.00 21.4 2.18 99.68 0.22 0.0916-Sep-97 103.00 0.34 0.03 97.53 0.00 -0.139-May-98 103.00 3.45 0.35 97.85 0.04 -0.0930-Sep-98 103.00 2.07 0.21 97.71 0.02 -0.116-May-99 103.00 0.21 0.02 97.52 0.00 -0.1320-Sep-99 103.00 0.50 0.05 97.55 0.01 -0.12 Cable leaking19-May-00 103.00 0.00 0.00 97.50 0.00 -0.13 11-Oct-00 103.00 0.00 0.00 97.50 0.00 -0.13 26-Apr-01 103.00 0.00 0.00 97.50 0.00 -0.13 16-Oct-01 103.00 0.00 0.00 97.50 0.00 -0.13 2-May-02 103.00 11.00 1.12 98.62 0.11 -0.02 Can hear leak in cable.16-Oct-02 103.00 20.70 2.11 99.61 0.21 0.0812-May-03 103.00 27.60 2.81 100.31 0.28 0.1522-Oct-03 103.00 1.74 0.18 97.68 0.02 -0.113-Jun-04 103.00 13.80 1.41 98.91 0.14 0.01

12-Nov-04 103.00 0.00 0.00 97.50 0.00 -0.13 cable leaking17-May-05 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking25-Oct-05 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking30-May-06 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking18-Oct-06 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking22-May-07 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking17-Sep-07 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking21-May-08 103.00 0.00 0.00 97.50 0.00 -0.13 Cable leaking

TABLE S2-2PROJECT:





5-Jan-93 103.00 2.0 0.20 98.95 0.03 0.002-Feb-93 103.00 2.0 0.20 98.95 0.03 0.00

23-Feb-93 103.00 3.0 0.31 99.06 0.04 0.0123-Mar-93 103.00 1.0 0.10 98.85 0.01 -0.026-Apr-93 103.00 0.0 0.00 98.75 0.00 -0.03

27-Apr-93 103.00 5.0 0.51 99.26 0.07 0.0429-Apr-93 103.00 6.0 0.61 99.36 0.08 0.054-May-93 103.00 3 0.31 99.06 0.04 0.018-Jun-93 103.00 2 0.20 98.95 0.03 0.0023-Jul-93 103.00 2 0.20 98.95 0.03 0.0031-Aug-93 103.00 8 0.82 99.57 0.11 0.0822-Sep-93 103.00 8 0.82 99.57 0.11 0.0829-Sep-93 103.00 10 1.02 99.77 0.13 0.1013-Oct-93 103.00 5 0.51 99.26 0.07 0.0410-Nov-93 103.00 2 0.20 98.95 0.03 0.007-Dec-93 103.00 3.5 0.36 99.11 0.05 0.025-Jan-94 103.00 1 0.10 98.85 0.01 -0.02

25-Jan-94 103.00 1 0.10 98.85 0.01 -0.023-Feb-94 103.00 0.1 0.01 98.76 0.00 -0.03

15-Feb-94 103.00 1 0.10 98.85 0.01 -0.021-Mar-94 103.00 8 0.82 99.57 0.11 0.0823-Mar-94 103.00 4 0.41 99.16 0.05 0.0213-Apr-94 103.00 0.1 0.01 98.76 0.00 -0.033-May-94 103.00 11 1.12 99.87 0.14 0.1110-May-94 103.00 3 0.31 99.06 0.04 0.012-Jun-94 103.00 3 0.31 99.06 0.04 0.01

16-Jun-94 103.00 3 0.31 99.06 0.04 0.0121-Jun-94 103.00 8 0.82 99.57 0.11 0.0828-Jun-94 103.00 6 0.61 99.36 0.08 0.054-Aug-94 103.00 4 0.41 99.16 0.05 0.02

19-Aug-94 103.00 3 0.31 99.06 0.04 0.0119-Sep-94 103.00 4 0.41 99.16 0.05 0.027-Oct-94 103.00 3 0.31 99.06 0.04 0.014-Nov-94 103.00 7 0.71 99.46 0.09 0.0627-Jun-96 103.00 0.2 0.02 98.77 0.00 -0.037-Dec-96 103.00 0.1 0.01 98.76 0.00 -0.031-May-97 103.00 13.1 1.34 100.09 0.17 0.1416-Sep-97 103.00 0.28 0.03 98.78 0.00 -0.039-May-98 103.00 2.78 0.28 99.03 0.04 0.0130-Sep-98 103.00 2.07 0.21 98.96 0.03 0.006-May-99 103.00 0.21 0.02 98.77 0.00 -0.0320-Sep-99 103.00 1 0.10 98.85 0.01 -0.0219-May-00 103.00 0 0.00 98.75 0.00 -0.0311-Oct-00 103.00 0 0.00 98.75 0.00 -0.0326-Apr-01 103.00 13.8 1.41 100.16 0.18 0.1516-Oct-01 103.00 0 0.00 98.75 0.00 -0.032-May-02 103.00 2.75 0.28 99.03 0.04 0.0116-Oct-02 103.00 0 0.00 98.75 0.00 -0.0312-May-03 103.00 1.7 0.17 98.92 0.02 -0.0122-Oct-03 103.00 0 0.00 98.75 0.00 -0.033-Jun-04 103.00 0 0.00 98.75 0.00 -0.03

12-Nov-04 103.00 0 0.00 98.75 0.00 -0.0317-May-05 103.00 5.5 0.56 99.31 0.07 0.0425-Oct-05 103.00 1.7 0.17 98.92 0.02 -0.0130-May-06 103.00 10 1.02 99.77 0.13 0.1018-Oct-06 103.00 0 0.00 98.75 0.00 -0.0322-May-07 103.00 0.04 0.00 98.75 0.00 -0.0317-Sep-07 103.00 0.94 0.10 98.85 0.01 -0.0221-May-08 103.00 1.7 0.17 98.92 0.02 -0.01

TABLE S2-3PROJECT:





5-Jan-93 102.00 4.0 0.41 96.51 0.04 0.002-Feb-93 102.00 1.0 0.10 96.20 0.01 -0.0323-Feb-93 102.00 5.0 0.51 96.61 0.05 0.0123-Mar-93 102.00 1.0 0.10 96.20 0.01 -0.036-Apr-93 102.00 1.0 0.10 96.20 0.01 -0.0327-Apr-93 102.00 16.0 1.63 97.73 0.15 0.1129-Apr-93 102.00 15.0 1.53 97.63 0.14 0.104-May-93 102.00 3 0.31 96.41 0.03 -0.018-Jun-93 102.00 1 0.10 96.20 0.01 -0.0323-Jul-93 102.00 1 0.10 96.20 0.01 -0.0331-Aug-93 102.00 1 0.10 96.20 0.01 -0.0322-Sep-93 102.00 2 0.20 96.30 0.02 -0.0229-Sep-93 102.00 2 0.20 96.30 0.02 -0.0213-Oct-93 102.00 3 0.31 96.41 0.03 -0.0110-Nov-93 102.00 3 0.31 96.41 0.03 -0.0124-Nov-93 102.00 0.2 0.02 96.12 0.00 -0.04 By Consultant7-Dec-93 102.00 2 0.20 96.30 0.02 -0.025-Jan-94 102.00 1 0.10 96.20 0.01 -0.0325-Jan-94 102.00 0.1 0.01 96.11 0.00 -0.043-Feb-94 102.00 1 0.10 96.20 0.01 -0.0315-Feb-94 102.00 8 0.82 96.92 0.08 0.041-Mar-94 102.00 4 0.41 96.51 0.04 0.0023-Mar-94 102.00 0.1 0.01 96.11 0.00 -0.0413-Apr-94 102.00 15 1.53 97.63 0.14 0.103-May-94 102.00 2 0.20 96.30 0.02 -0.0210-May-94 102.00 2 0.20 96.30 0.02 -0.022-Jun-94 102.00 2 0.20 96.30 0.02 -0.0216-Jun-94 102.00 4 0.41 96.51 0.04 0.0021-Jul-94 102.00 5 0.51 96.61 0.05 0.0128-Jul-94 102.00 3 0.31 96.41 0.03 -0.014-Aug-94 102.00 2 0.20 96.30 0.02 -0.0219-Aug-94 102.00 3 0.31 96.41 0.03 -0.0119-Sep-94 102.00 2 0.20 96.30 0.02 -0.027-Oct-94 102.00 3 0.31 96.41 0.03 -0.014-Nov-94 102.00 4 0.41 96.51 0.04 0.0027-Jun-96 102.00 0.1 0.01 96.11 0.00 -0.047-Dec-96 102.00 0.1 0.01 96.11 0.00 -0.041-May-97 102.00 8.3 0.85 96.95 0.08 0.0416-Sep-97 102.00 0.34 0.03 96.13 0.00 -0.049-May-98 102.00 2.76 0.28 96.38 0.03 -0.0130-Sep-98 102.00 2.07 0.21 96.31 0.02 -0.026-May-99 102.00 0.35 0.04 96.14 0.00 -0.0420-Sep-99 102.00 0.50 0.05 96.15 0.00 -0.0419-May-00 102.00 0.00 0.00 96.10 0.00 -0.0415-Sep-00 102.00 0.00 0.00 96.10 0.00 -0.0426-Apr-01 102.00 0.00 0.00 96.10 0.00 -0.0416-Oct-01 102.00 0.00 0.00 96.10 0.00 -0.042-May-02 102.00 2.75 0.28 96.38 0.03 -0.0116-Oct-02 102.00 0.00 0.00 96.10 0.00 -0.0412-May-03 102.00 2.76 0.28 96.38 0.03 -0.0122-Oct-03 102.00 0.00 0.00 96.10 0.00 -0.043-Jun-04 102.00 0.00 0.00 96.10 0.00 -0.04

12-Nov-04 102.00 0.00 0.00 96.10 0.00 -0.0417-May-05 102.00 1.40 0.14 96.24 0.01 -0.0325-Oct-05 102.00 0.00 0.00 96.10 0.00 -0.0430-May-06 102.00 7.00 0.71 96.81 0.07 0.0318-Oct-06 102.00 0.00 0.00 96.10 0.00 -0.0422-May-07 102.00 0.00 0.00 96.10 0.00 -0.0417-Sep-07 102.00 0.01 0.00 96.10 0.00 -0.0421-May-08 102.00 0.00 0.00 96.10 0.00 -0.04

TABLE S2-4PROJECT:





5-Jan-93 103.00 2.0 0.20 98.80 0.03 0.002-Feb-93 103.00 2.0 0.20 98.80 0.03 0.00

23-Feb-93 103.00 2.0 0.20 98.80 0.03 0.0023-Mar-93 103.00 0.0 0.00 98.60 0.00 -0.036-Apr-93 103.00 0.0 0.00 98.60 0.00 -0.03

27-Apr-93 103.00 6.0 0.61 99.21 0.08 0.0529-Apr-93 103.00 4.0 0.41 99.01 0.05 0.024-May-93 103.00 1 0.10 98.70 0.01 -0.028-Jun-93 103.00 1 0.10 98.70 0.01 -0.0223-Jul-93 103.00 1 0.10 98.70 0.01 -0.0231-Aug-93 103.00 1 0.10 98.70 0.01 -0.0222-Sep-93 103.00 2 0.20 98.80 0.03 0.0029-Sep-93 103.00 2 0.20 98.80 0.03 0.0013-Oct-93 103.00 2 0.20 98.80 0.03 0.0010-Nov-93 103.00 3 0.31 98.91 0.04 0.0124-Nov-93 103.00 0 0.00 98.60 0.00 -0.03 By Consultant7-Dec-93 103.00 2 0.20 98.80 0.03 0.005-Jan-94 103.00 1 0.10 98.70 0.01 -0.02

25-Jan-94 103.00 0.1 0.01 98.61 0.00 -0.033-Feb-94 103.00 1 0.10 98.70 0.01 -0.02

15-Feb-94 103.00 7 0.71 99.31 0.09 0.061-Mar-94 103.00 4 0.41 99.01 0.05 0.0223-Mar-94 103.00 0.1 0.01 98.61 0.00 -0.0313-Apr-94 103.00 7 0.71 99.31 0.09 0.063-May-94 103.00 2 0.20 98.80 0.03 0.0010-May-94 103.00 2 0.20 98.80 0.03 0.002-Jun-94 103.00 3 0.31 98.91 0.04 0.01

16-Jun-94 103.00 1 0.10 98.70 0.01 -0.0221-Jul-94 103.00 5 0.51 99.11 0.06 0.0328-Jul-94 103.00 3 0.31 98.91 0.04 0.014-Aug-94 103.00 2 0.20 98.80 0.03 0.00

19-Aug-94 103.00 3 0.31 98.91 0.04 0.0119-Sep-94 103.00 2 0.20 98.80 0.03 0.004-Nov-94 103.00 3 0.31 98.91 0.04 0.0127-Jun-96 103.00 0.1 0.01 98.61 0.00 -0.037-Dec-96 103.00 0.1 0.01 98.61 0.00 -0.031-May-97 103.00 3.5 0.36 98.96 0.04 0.0116-Sep-97 103.00 0.34 0.03 98.63 0.00 -0.039-May-98 103.00 2.07 0.21 98.81 0.03 0.0030-Sep-98 103.00 2.07 0.21 98.81 0.03 0.006-May-99 103.00 0.35 0.04 98.64 0.00 -0.0320-Sep-99 103.00 0.50 0.05 98.65 0.01 -0.0219-May-00 103.00 0.00 0.00 98.60 0.00 -0.0315-Sep-00 103.00 0.00 0.00 98.60 0.00 -0.0326-Apr-01 103.00 0.00 0.00 98.60 0.00 -0.0316-Oct-01 103.00 0.00 0.00 98.60 0.00 -0.032-May-02 103.00 4.10 0.42 99.02 0.05 0.0216-Oct-02 103.00 3.40 0.35 98.95 0.04 0.0112-May-03 103.00 13.79 1.41 100.01 0.18 0.1522-Oct-03 103.00 1.74 0.18 98.78 0.02 -0.013-Jun-04 103.00 0.00 0.00 98.60 0.00 -0.03

12-Nov-04 103.00 0.00 0.00 98.60 0.00 -0.0317-May-05 103.00 1.40 0.14 98.74 0.02 -0.0125-Oct-05 103.00 0.00 0.00 98.60 0.00 -0.0330-May-06 103.00 9.00 0.92 99.52 0.11 0.0818-Oct-06 103.00 0.00 0.00 98.60 0.00 -0.0322-May-07 103.00 0.00 0.00 98.60 0.00 -0.0317-Sep-07 103.00 0.08 0.01 98.61 0.00 -0.03

5/21/2008 103.00 0.00 0.00 98.60 0.00 -0.03

Documents

September 5, 2008 - transportation.alberta.ca Landslide… · At the time of the Spring 2008 instrument readings, extensive cracking was noted along the pile wall along the downslope