News and Events

Terracon and Liesch – Environmental Consultants & Engineers Join Together to Expand and Enhance Service Offerings to Clients

posted 01.10.2013

OLATHE, Kan. — Terracon Consultants, Inc. is pleased to announce the acquisition of The Liesch Companies – Environmental Consultants & Engineers, based in Minneapolis, Minn.

Founded in 1968, Liesch provides a full range of environmental services including industrial hygiene, industrial water and wastewater, air quality, acquisition due diligence, environmental compliance, environmental engineering, solid waste and Brownfield services. Client sectors include agribusiness, airports, alternative energy, commercial real estate, facilities, government, health care, industrial, infrastructure, legal, mining and waste. Liesch has additional offices in St. Paul and Phoenix.

“We are excited to be joining forces with Liesch to expand our environmental services to clients,” said David Gaboury, P.E., president and CEO of Terracon. “Their employees deliver expertise and service that is responsive and thorough with successful results. Their track record speaks for itself.”

Terracon is retaining Liesch’s 50 employees. Liesch will continue operating under the same name.

“Over the last 44 years, we have built our reputation on providing quality environmental engineering and consulting services,” said Brian Liesch, CEO and managing principal of Liesch. “As we extend the same quality services to a larger market, merging with Terracon will allow us to continue to meet the diverse needs of our clients.”

Terracon is an employee-owned engineering consulting firm with more than 2,800 employees providing geotechnical, environmental, construction materials and facilities services from more than 130 offices in 39 states nationwide. Terracon currently ranks 39th on Engineering News-Record’s List of Top 500 Design Firms. For additional information about Terracon, please visit