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

Brian Avon


Kate Wallin

Vice Chair

Tim Taylor


Greg Watanabe


Lisa Arroyo

Past Chair

Michelle Beason

Jennifer Glynn

Jacquie Jaques

Rachel Martin

Sasha Mestetsky

Devin Nakayama

Technical Papers, Books and More!

NASTT has a full library of technical papers, books and more!

Upcoming Events

The WESTT Chapter Meeting

Virtually (MS Teams)

April 10, 2022

The WESTT Chapter Meeting is scheduled for April 10, 2022 from 1:00 to 2:00 PST and will be hosted on MS Teams. All NASTT members located in the Western Region (Arizona, California, Hawaii, Nevada, and New Mexico) are encouraged to attend.  The meeting will provide updates on board activities and to discuss how to best serve our chapter in the future. Topics to be covered include: future chapter meetings, planning for our 2022 in-person conference, board elections, outreach to under-represented regions, student chapter engagement, and our financial status report.  Register for the meeting by emailing Kate Wallin at kate.wallin@bennetttrenchless.com.  We hope to see you there!

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.