1. Department of Civil Engineering, University of British Columbia, 6250 Applied Science Lane, Vancouver, BC, Canada V6T 1Z4 E-mail: th.thomas.hug@gmail.com; ehall@civil.ubc.ca
2. BIOMATH, Department of Applied Mathematics, Biometrics and Process Control, Ghent University, Coupure Links 653, 9000 Gent, Belgium E-mail: lbene@biomath.ugent.be; ingmar.nopens@ugent.be
3. CH2M HILL, P.O. Box 22508, Denver, CO 80222-0508, USA E-mail: bruce.johnson2@ch2m.com
4. Department of Civil and Environmental Engineering and Department of Animal Sciences, University of Illinois at Urbana-Champaign, 205 North Mathews Avenue, Urbana, IL 61801, USA E-mail: emorgenr@uiuc.edu
5. modelEAU, Département de génie civil, Université Laval, Pav. Pouliot, 1065 av. de la Médecine, Québec, QC, Canada G1V 0A6 E-mail: leiv.rieger@gci.ulaval.ca; peter.vanrolleghem@gci.ulaval.ca
6. Black & Veatch, 8400 Ward Parkway, Kansas City, MO 64114, USA E-mail: shawar@bv.com