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The wasting topography of the North Spur and surrounding area is well demonstrated by this low resolution topographical Map. Source : Topographic Maps Canada 28
GLACIO-MARINE CLAY: Source of the North Spur Problem Glacio-marine clay (otherwise known as “Quick Clay” is a well-known, high latitude, circumpolar geological hazard in places such as Labrador, Quebec, Alaska, Russia and Norway. In Ontario and Quebec equivalent quick clays are known as “Leda Clay” . Click http://www.nrcan.gc.ca/earth-sciences/products-services/mappingproduct/geoscape/ottawa/6098 to see this page. 29
Page 1 and 2: The North Spur Quick Clay Instabili
Page 3 and 4: NOTE ON SOURCES The following prese
Page 5 and 6: Overhead view of North Spur showing
Page 7 and 8: What is the North Spur ? The North
Page 9 and 10: • The previous slide shows on the
Page 11 and 12: Overhead view of North Spur showing
Page 13 and 14: Nalcor Depiction of the Muskrat Fal
Page 15 and 16: In February 1978, a large landslide
Page 17 and 18: General Overview of Muskrat Falls i
Page 19 and 20: 1988 - 10 years after the 1978 Nort
Page 21 and 22: View in 2007 showing line of pumpin
Page 23 and 24: The SNC - AGRA Final Muskrat Falls
Page 25 and 26: Unfortunately the critical Jacques
Page 27: 1979 Hydro Contour map of the North
Page 32 and 33: North Spur Soil Conditions As can b
Page 34 and 35: Borehole Results on the North Spur
Page 36 and 37: SNC- AGRA’s 1999 North Spur Plan:
Page 38 and 39: The North Spur Stabilization Plan i
Page 40 and 41: Clay on the downstream side of the
Page 42 and 43: “Quick Clay” conditions caused
Page 44 and 45: Nalcor’s Bank Stability Study of
Page 46 and 47: NRCan ‘s concerns came under four
Page 48 and 49: The Joint Review Panel (JRP) also a
Page 50 and 51: The 2008 SNC report filed by Nalcor
Page 52 and 53: The filling of the Muskrat Reservoi
Page 54 and 55: In February 2010, a major landslide
Page 56 and 57: View of February 2010 landslide are
Page 58 and 59: In August, 2010, Nalcor Energy, res
Page 60 and 61: On August 30, 2010, the JRP asked N
Page 62: The Norwegian Geotechnical Institut
Page 70 and 71: On March 9, 2011, the Joint Panel s
Page 72 and 73: Nalcor North Spur Technical Note On
Page 74 and 75: The Nalcor North Spur Technical Not
Page 76 and 77: Nalcor’s “Technical Note” sta
Page 78 and 79:
On December 17, 2012 Nalcor sanctio
Page 80 and 81:
SNC Lavalin seeks Package Leader -
Page 82 and 83:
What is Nalcor/SNC Lavalin’s Nort
Page 84 and 85:
How the 2013 North Spur Geotechnica
Page 86 and 87:
And there may be an additional, and
Page 88 and 89:
Google Earth image of area upslope
Page 90 and 91:
NRCan slide on liquefaction 90
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northspur

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