[1] George Washington Univ, Dept Civil & Environm Engn, 2121 Eye St NW, Washington, DC 20052 USA
[2] Univ Ghent, Ctr Microbial Ecol & Technol CMET, Coupure Links 653, B-9000 Ghent, Belgium
[3] Brown & Caldwell, 2301 Lucien Way,Suite 250, Maitland, FL 32751 USA
[4] DC Water, 5000 Overlook Ave SW, Washington, DC 20032 USA
[5] ARA Consult GmbH, Unterbergerstr 1, A-6020 Innsbruck, Austria
[6] Hampton Rd Sanitat Dist, 1436 Air Rail Ave, Virginia Beach, VA 23455 USA