Management Team

Jari Kaukonen - Vice Chairman - FiSTT

Jari Kaukonen - Chairman - FiSTT

Jari Kaukonen, B.Sc. (Civil Engr.) has been involved in trenchless since 1982 and a member of ISTT since 1987. Jari is a founding member of the Finnish Trenchless Society for Trenchless Technology (FiSTT) and has served as a Board member since its establishment in 1999. Mr. Kaukonen also has served as membership Secretary, and Treasurer of FiSTT before becoming its Chairman in 2011. Jari Kaukonen is business unit manager with WSP Finland, a worldwide consulting company. He is active in trenchless water sector issues including establishment of Finnish National trenchless water management guidelines. Jari is also an active member of the international trenchless community serving as a keynote speaker and lecturer at trenchless conferences in Finland and abroad, and is a regular participant at ISTT International No-Digs.

Matthew  Izzard - UKSTT

Matthew Izzard - Vice Chair - UKSTT

Matthew Izzard is the Chairman of the UKSTT and is an active member of the UKSTT's education and training programs. He has been involved in trenchless since the late 1980s holding management positions with several trenchless manufacturers and suppliers. He is currently Business Development Director with Tracto Technik UK and is a member of the International Standards Organization Technical Committee on trenchless technology.

Keh-Jian (Albert) Shou - CTSTT

Keh-Jian (Albert) Shou - Vice Chair - CTSTT

Keh-Jian (Albert) Shou received his Ph.D. degree of Civil Engineering from the University of Minnesota (U.S.A.) in 1993. He began his career as a geotechnical engineer in National Expressway Engineering Bureau of Taiwan, then join National Chung-Hsing University as a professor. His specialties include rock mechanics/engineering, trenchless technologies, and engineering geology. He now serves the Tunneling and Underground Space Technology (SCI international journal) as an editor. The joined CTSTT of Taiwan in 2007, became the board director in 2008, and was elected as the chairman in 2013. He is the driving force in the development and promoting the trenchless technologies in Taiwan area, and is working in cooperation with consultants and contractors for various challenging trenchless projects. He was elected to the Executive Sub Committee ISTT Board on the No-Dig Istanbul 2015.

Enrico Boi - NASTT Chairman

Enrico Boi - Past Chairman - NASTT

ISTT Chairman, Enrico Boi is a Civil Engineering graduate with a background in electronic and information technology. For the past 20 years, Mr. Boi has been involved in the trenchless technology business, with a focus on underground mapping and SUE (Subsurface Utility Engineering). After about 15th years with TST Engineering, Mr. Boi is now President at IDS Georadar North America, managing geosystem and slope monitoring applications. He is active in research and development of mapping technologies, which have contributed to their advancement. He serves and has served as a keynote speaker and lectures at international events.

Jens Hoelterhoff - GSTT


Jens Hoelterhoff - GSTT

Professor Jens Hoelterhoff is Chairman of the GSTT and has twenty more than thirty years experience in underground pipe construction and trenchless applications. Hoelterhoff received his degree as a mining engineer from Technical University, Berlin in 1984. Between 1984 to 2002, he held management positions in pipeline construction, microtunneling and horizontal drilling. In 2002 Jens Holterhoff joined the University of Hochschule Wismar staff as a professor of Construction Management and Construction Technologies. He also operates a private consulting and engineering business with a focus on pipeline construction and trenchless technologies.

Trevor Gosatti - ASTT

Trevor Gosatti - ASTT

Trevor Gosatti is a civil contractor who has been involved with various civil construction companies owned or controlled by the Gosatti family interests since 1983. He developed an interest in trenchless technologies in the mid 1990’s through the use of micro-tunnelling equipment, and this expanded to other trenchless technologies, when he invested in companies with pipe rehabilitation technologies. He has been involved as both a Director and Managing Director of an ASX listed company that was developing pipe relining technologies from 2004 until 2014. Trevor has been the Western Australian Councillor for the Australasian Society of Trenchless Technology since 2005, and is a past Chairman for the Australasian Society of Trenchless Technology having held that role from 2009 to 2015.

Mark Andre Haebler - AATT


Mark André Haebler - AATT

Mark André Haebler is the Vice-Chairman of the AATT and a member since 2015. Furthermore, he´s an active member of an Austrian education and training program called: “ÖWAV-certified consultant for sewer rehabilitation. “ He has been involved in trenchless since 2013´s holding management positions with several trenchless suppliers. He is currently responsible for International Sales and Development with Uhrig Kanaltechnik GmbH, Germany, and is a member of the ÖWAV – rules and standards working group and a speaker as a certified consultant for sewer rehabilitation (since 2013).

Kim Staheli - NASTT

Kim Staheli - NASTT

Kimberlie Staheli, Ph.D., PE, specializes in trenchless engineering. Ms. Staheli's expertise ranges from geotechnical evaluations to microtunneling, horizontal directional drilling, and pipe jacking. She has extensive experience with feasibility studies, preliminary designs, plans and specifications, constructability reviews, prequalification packages, and on-site specialty construction inspections. She has served as an expert witness on numerous projects involving trenchless technology. Kim Staheli has served as both the Vice Chair and Chair of NASTT and is currently Immediate Past Chair of NASTT. She has also been a member of the NASTT delegation at several ISTT Board meetings. She holds a Ph.D. from the Georgia Institute of Technology in Geotechnical Engineering.

Yasin Torun - TSITT

Yasin Torun - TSITT

Yasin Torun received his B.Sc. in Mechanical Engineering from the Technical University of Istanbul and his M.Sc. in Business Administration from the University of Istanbul. He began his career in Istanbul Water and Sewerage Administration and gained extensive experience of underground infrastructure construction. Afterwards he spent several years in Turkish contracting companies conducting underground infrastructure construction projects inside and outside of Turkey. Currently he is working as CEO of Torencon Engineering and Consulting Ltd. based in Istanbul with a focus on business development activities in trenchless technology projects. Mr. Torun is a founding member of TSITT (Turkish Society for Infrastructure and Trenchless Technology) and currently serving as the Chairman of the TSITT. He is a member of Turkish Chamber of Mechanical Engineers and Turkish Tunnelling Society.

Peter Smeallie -  Executive Director

Peter Smeallie - Executive Director

Peter Smeallie assumed the executive directorship of ISTT in April 2017, succeeding John Hemphill who will continue in a consulting position during a transition phase. Mr.Smeallie is president of Research Opportunities Management, a consulting firm offering strategic advice on developing research and development programs for universities, professional firms and other organizations. Prior to this, he worked at the National Academy of Sciences where his responsibilities included directing advisory research studies in areas such as geotechnology, rock mechanics, tunneling methods and safety, energy engineering, infrastructure, and urban systems. Mr. Smeallie's last position at the Academy was Director of the Geotechnical Board including the U.S. National Committee on Tunneling Technology. Mr. Smeallie has a degree in Urban Studies from St. Lawrence University. He resides in Alexandria, Virginia, U.S.A.

 Kyoko Kondo -  Administrative Assistant

Kyoko Kondo - Administrative Assistant

As Administrative Assistant, Ms. Kyoko Kondo is responsible for managing ISTT’s membership database and for liaison with ISTT membership and the ISTT website management team. Ms. Kondo is also a member of the Japan Society for Trenchless Technology (JSTT) staff and has regularly participated in ISTT events, since joining JSTT in 2002.