1. Department of Civil & Environmental Engineering, University of Massachusetts, Amherst, MA 01003, USA
2. Department of Civil & Environmental Engineering, University of Massachusetts, Amherst, MA 01003, USA and Seattle Public Utilities, Water Engineering Division, Seattle, Washington
3. Department of Civil & Environmental Engineering, University of Massachusetts, Amherst, MA 01003, USA and Tighe & Bond Consulting Engineers, Westfield, Massachusetts