1. Consultant, 2806 Antelope Rd., Fort Collins, CO 80525 (corresponding author).
2. Principal, Wiss, Janney, Elstner Associates, Inc., 3609 South Wadsworth Blvd., Suite 400, Lakewood, CO 80235.
3. Principal Engineer, Lykosh & Associates, Inc., 223 Southpark Rd., Highlands Ranch, CO 80126.