1. Manager, Planning and Controls, SMA Consulting Ltd., 240 Sun Life Place, 10123 99 St., Edmonton, AB, Canada T5J 3H1.
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 2G7 (corresponding author).
3. Facilitator/Analyst, SMA Consulting Ltd., 240 Sun Life Place, 10123 99 St., Edmonton, AB, Canada T5J 3H1.