1. Geotechnical Engineering Analyst, GHD, 4600 Blvd. de la Côte-Vertu, Montreal, QC, Canada H4S 1C7 (corresponding author).
2. Professor, Dept. of Civil and Water Engineering, Laval Univ., 1065, Ave. de la Médecine, Pavillon Adrien-Pouliot, Room 2912B, Québec, QC, Canada G1V 0A6.
3. Geotechnical Engineer, Dam Safety Division, Hydro-Québec, 75, Blvd. René-Lévesque Ouest, Montréal, QC, Canada H2Z 1A4.