1. Dept. of Civil and Environmental Engineering, Florida State Univ., 2525 Pottsdamer St., Tallahassee, FL 32311 (corresponding author).
2. Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695.
3. Environmental Engineer, Alternative Natural Technologies Inc., 1847 Whittaker Hollow Rd., Blacksburg, VA 24060; and OBE Consulting, 1847 Whittaker Hollow Rd., Blacksburg, VA 24060.
4. Waste Management Inc., 2956 Montana Ave., Cincinnati, OH 45211.