Professor Samuel T. Ariaratnam is a Professor and Construction Engineering Program Chair in the School of Sustainable Engineering and the Built Environment at Arizona State University. Prior to coming to ASU in 2001, he was a faculty member in the Department of Civil & Environmental Engineering at the University of Alberta. His teaching and research interests are in the area of Urban Infrastructure Management & Rehabilitation, with a particular focus on trenchless engineering applications of horizontal directional drilling, trenchless pipe replacement, and underground utility asset management. He has published over 200 technical papers in refereed journals and conferences. Professor Ariaratnam serves on the Editorial Board of Trenchless Technology Magazine, Trenchless Engineering, and the ASCE Journal of Construction Engineering and Management. He was named to the Phoenix Business Journal’s Forty under 40 list in 2006. In 2012, he was named Trenchless Technology Person of the Year for North America. He currently serves as the Chairman of the International Society for Trenchless Technology.