Tetra Tech acquired Wardrop, expanding the Tetra Tech team to more than 10,000 staff. The Company's line of business includes providing professional engineering services. Les Wardrop started Wardrop Engineering Inc. in 1955 in Winnipeg, Manitoba, Canada. Initial projects consisting primarily of public works engineering and residential subdivision servicing.Company provides consulting, engineering, program management, and construction management services that address fundamental needs for water, environment, infrastructure, resource management, and energy.