Who are we

The Great Lakes, St. Lawrence & Atlantic Chapter (GLSLA) encourages and facilitates the science and practice of trenchless technology for the public benefit. We achieve this by fostering education, and research and acting as a catalyst for technological and process change.

Since 1995. GLSLA has provided its members with educational opportunities, unique training and  discussion forums to foster growth and interest for trenchless technologies in Ontario, Quebec and the Atlantic provinces. We are strong believers in sharing knowledge and promoting it through a variety of venues. We have a history of initiatives that support the trenchless community and the infrastructure world.

GLSLA owes many thanks our members and volunteers, who throughout the years, have helped build this Chapter from a few industry experts with a dream into a strong Canadian network within the North American Society for Trenchless Technology (NASTT) family. GLSLA currently has just over 200 members from engineering/consultants, utilities and public works, construction, manufacturers and suppliers and academia, which also include our very valuable student members.

Officers and Board Members

Dave Crowder


Marya Jetten

Vice Chair

Patrick Moskwa


Mike Near


Bruce Yao

Magazine Committee

Brian Moreau

Website Committee

Bill Garibaldi

Seminar/ Training Committee

Harry Krinas

Nicholas Gan

Kevin Bainbridge

Past Chair

Ashley Rammeloo

Technical Papers, Books and More!

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

Upcoming Events

Trenchless Insights: Inspection of Gravity and Pressure Flow Structures

Mississauga, Ontario

June 19, 2024

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.