Who are we
NASTT is the North American Society for Trenchless Technology, an engineering society of individuals, public organizations and private companies dedicated to the promotion and use of trenchless construction practices and technologies. NASTT was founded and incorporated as a non-profit organization in June 1990.
The Western Chapter of NASTT (WESTT) promotes the NASTT mission within our western region of Arizona, California, Hawaii, Nevada, and New Mexico. Regional Chapters offer members the opportunity to network with industry colleagues as well as attend educational events and share solutions for the betterment of our society.
Our mission is to advance the science and practice of Trenchless Technology for public benefit; to promote and conduct education, training, study and research in said science and practice for the public benefit; and to make available information thereof to all interested and concerned parties.
Officers and Board Members
Mike Jaeger
Chair
David Haug
Vice Chair
Sasha Mestetsky
Treasurer
Sandie Dudley
Secretary
Michelle Beason
Past Chair
Scott Gilles
Jacquie Jaques
Justin Lianides
Tiffanie Mendez
Devin Nakayama
Su Pyae Sone Soe
Upcoming Events
2026 Western Chapter No-Dig Conference
TBD
October 2026
Become a NASTT Member
When you join the North American Society for Trenchless Technology (NASTT), you’ll belong to the largest community of trenchless professionals in the USA and Canada committed to promoting better and more responsible ways to manage underground infrastructure and advance trenchless technology for the benefit of the public and the natural environment.
Join as a college student or individual professional or get group savings as an organization with a corporate or government/education/utility membership. Chapter membership is included with NASTT membership.