GS Management Team

Terran Sandwith

President & CEO

Terran learned the construction business literally from the ground up by apprenticing under his father, GS founder Glen Sandwith.  He started in the field as a project manager and estimator, while learning the roles and responsibility of every job at the company. 

Now as President & General Manager, Terran is responsible for the overall direction and management of GS Construction.  He charts the course, leads by example and ensures that GS Construction’s Vision, Mission, and Values are upheld every day. 

Terran is a graduate of York University’s Schulich School of Business, and earned an Executive MBA from Queen’s University. 

Mike Durdle

VP, Municipal & Development; Operations Manager

Mike has worked his way from the bottom to the top at GS Construction. He started as a labourer in 2004, moving to Topman, Junior Foreman, Foreman, Superintendent, and then Project Manager.  Now Mike oversees all our projects (except for our EPCOR work) as well as the overall operations of GS.  

In addition to project oversight, Mike manages our equipment and truck fleet, and ensures that all our personnel are upholding the values and standards of GS Construction. 

Mark Wright

VP, Estimating; Senior Project Manager

Mark has progressed his way through the ranks into the GS management team.  He started with us in 2000 as a Junior Foreman and has steadily worked his way up to head GS’s Estimating department.   

Mark is responsible for managing all systems involving lead generation, project tender procurement and pricing, and pre-qualification submissions.  He also acts as Senior Project Manager on all GS projects. 

Mark is a graduate of Northern Alberta Institute of Technology’s Civil Engineering Technology program. 

Ryan Thompson

VP, EPCOR Division; Project Manager

Ryan came to GS Construction in 2012 after the company won a long-term renewable contract to replace infrastructure for EPCOR Utilities in the City of Edmonton. Ryan built and managed all aspects of GS Construction’s new EPCOR Water Division.  

Today, this core business unit successfully replaces approximately five kilometres of watermain each year.  Prior to GS, Ryan had a successful career in project and contract management at Associated Engineering. 

Ryan holds an Environmental Engineering Degree from Norwich University in Vermont, where he played for their Division III hockey program.