1. Civil and Environmental Engineering Department, Virginia Tech, Blacksburg, Virginia
2. Civil and Environment Engineering Department, Old Dominion University, Norfolk, VA 23529
3. Hampton Roads Sanitation District, 1434 Air Rail Ave., Virginia Beach, Virginia
4. ARA Consult, Unterbergerstr. 1, A-6020 Innsbruck, Austria
5. DC Water Authority, 5000 Overlook Ave. SW, Washington DC