1. Hampton Roads Sanitation District Virginia Beach Virginia USA
2. Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Blacksburg Virginia USA
3. Department of Medical Biology, Hamidiye International Faculty of Medicine University of Health Sciences İstanbul Turkey
4. Department of Earth and Environmental Engineering Columbia University New York New York USA
5. Department of Civil and Environmental Engineering Northwestern University Evanston Illinois USA
6. DC Water and Sewer Authority Washington District of Columbia USA