SHOP SLIDE Photo 1. Looking south at cracking across the footpath at the end of the Hwy 2 EB to Hwy 684 SB off ramp at the 99 Ave. intersection. Additional movement since the June 9, 2014 site visit. Photo 2. Looking south at seepage (oxidized area) through the Hwy 2 WB to Hwy 684 SB offramp (99 Avenue intersection). Water is flowing more rapidly than on June 9, 2014. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 1 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 3. Looking southwest from northeast side of Hwy 684/99 Avenue intersection at oxidised water flow emanating from the gravel seems. The use of the geomebrane sheets appears to have temporarily halted the backscarp/scour retrogression where it has been placed. No significant change since June 9, 2014. Photo 4. Looking northwest from end of the geomembrane sheets below the area offloaded by the Town at backscarp and the scour further downslope. Both the scour and retrogression have worsened since June 9, 2014. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 2 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 5. Looking south towards the northeast side of the Hwy 2 EB/Hwy 684 SB off ramp embankment. Wet zones, indicative of on-going seepage, were noted at several locations along the base of and within the backscarp. Photo 6. Looking northwest from south of the pipe racks. Dark zones in the Hwy 2 offramp embankment (left) are indicative of water seepage. Backscarp has now retrogressed beyond the guardrail posts 0.6 m into the paved shoulder. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 3 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 7. Looking northwest at the 800 mm diameter pipe. The piperack support is pushing into the protective sheeting, which is indicative of downslope movement (to the right). Photo 8. Looking east along the pipe rack at the 400 mm diameter pipe, which is lifting out of the roller seats and bending upwards due to downslope movement. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 4 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 9. Looking southwest from the base of the piperacks. The smaller 400 mm diameter pipe is clearly under stress and is bending out of the piperack roller seats due to downslope movement. Photo 10. Looking northwest along culvert at the 99 Avenue intersection. Precipitation event of August 2, 2014 had caused the ditch water flow to rise above the 99 Avenue road structure. The ditch has been severely eroded with scour formed to the side of the rip rap lining. Several rip rap rocks were dislodge and transported into the culvert pipe. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 5 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 11. Looking southeast along culvert centerline at the 99 Avenue intersection. Water is permeating upwards through cracks in the asphalt pavement surface. Photo 12. Looking southeast along culvert at the 99 Avenue intersection. Culvert outlet clay plug and rip rap protection have has been compromised, exposing the culvert pipe. Extensive ditch bottom erosion and debris transported downslope of the outlet. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 6 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 13. Looking southeast from above the pipe racks at the backscarp retrogression, which is now at 0.6 m into the roadway shoulder. Photo 14. Looking south at drop roadway above the piperacks. Bow is now visible along the white line and is worse than on June 9, 2014. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 7 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 15. Looking south at drop roadway above the piperacks. Cracking in asphalt is worse than on June 9, 2014. Photo 16. Looking northwest along NBL of the Hwy 2 offramp. Dips pavement at yellow noticeable near median. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 8 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 17. Looking north across the road at the south end of the median island. Note the dip in the road at the scarp for the lower slide bowl. Photo 18. Looking west across Hwy 2 EB/Hwy 684 SB off-ramp. Dips in pavement are now discernable in in previously observed cracked areas. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 9 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 19. Looking east across Hwy 2 EB/Hwy 684 SB off-ramp at new scour gully formed during the August 2, 2014 precipitation event on the downslope side of the embankment. (The water concentrated and overflowed over the area of the dip in the pavement.) Photo 20. Looking west across Hwy 2 EB/Hwy 684 SB off-ramp at new gully formed during August 2, 2014 precipitation on downslope side of embankment. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 10 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 21. Looking northwest from south end of the Shop landslide along Hwy 2 EB/Hwy 684 SB off-ramp. Dips in pavement are now discernable in in previously observed cracked areas. Photo 22. Looking north along the Hwy 2 EB/Hwy 684 SB offramp at the upper slide backscarp. Noticeable dip in the road surface. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 11 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
Photo 23. Looking southeast across Hwy 2 EB/Hwy 684 SB off ramp at dip in pavement at south end of the larger landslide backscarp crossing the roadway. Photo 24. Looking northwest along scarp of landslide along treeline at the crest of the slope above the CNR right-of-way, near piezometer SP10-9. The overall landslide feature block drop at backscarp is now at about 3 m and the backscarp height is at about 1.7 m. Client: Alberta Transportation Date: September 10, 2014 File No.: 15-16-305 Page 12 of 12 E File: \\H\15\16-305 2014 PH9 August 12 Call Out Photos
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