Incorporated in 1977 in Brampton, Ontario near Toronto, Canada, Terraprobe has opened branch offices in Barrie (1990), Stoney Creek (1995), and Sudbury (1996). The firm is entirely owned by senior employees. Professional staff currently totals over 140, including over 30 professional engineers, geologists, hydrogeologists, Environmental engineers, and geo-scientists
WSP is one of the world's leading professional services firms, working with governments, businesses, architects and planners and providing integrated solutions across many disciplines. The firm provides services to transform the built environment and restore the natural environment, and its expertise ranges from environmental remediation to urban planning, from engineering iconic buildings to designing sustainable transport networks, and from developing the energy sources of the future to enabling new ways of extracting essential resources. It has approximately 15,000 employees, mainly engineers, technicians, scientists and architects, as well as various environmental experts, based in more than 300 offices, across 35 countries, on every continent.