Minneapolis – LieschGeolocation: 44.9959, -93.4503


Liesch Associates, a Terracon Company (Liesch), joined Terracon in January 2013. Established in 1968 and based in Minneapolis, Minnesota, 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 brownfields services. Liesch has more than 50 employees in our Minneapolis and St. Paul offices. For additional information, please see

13400 15th Ave. North
Plymouth, MN 55441

Phone: (763) 489 3100
Fax: (763) 489 3101




Ken Olson P.G., Office Manager

Key Projects

 Canola Oil Extraction Plant
Canola Oil Extraction PlantGeolocation: 0, 0
The Northstar Agri Industries (NAI) project in Oklahoma included permitting required prior to the construction of a 2,500 ton per day canola oil extraction facility. As part of the project, Liesch, A Terracon Company (Liesch) completed a Phase I, Phase II, Title V and wetlands permitting. All of the necessary permits to begin construction were obtained prior to NAI's planned schedule for construction. Liesch continues to work with NAI on environmental compliance issues through construction and operation of the facility.

 MSP Glycol Management Program Development and Oversight
MSP Glycol Management Program Development and OversightGeolocation: 0, 0
With more than 20 years of managing deicing collection programs at MSP, Liesch, A Terracon Company (Liesch), has earned an excellent reputation for its knowledge of aircraft and pavement deicing issues. In particular, Liesch has developed a detailed understanding of the potential impacts deicing operations may have on stormwater discharges and the effectiveness of containment technologies to mitigate those impacts. Liesch has overseen the evolution of MSP de-icing collection program, which is a national leader in utilizing various collection options and evaluating the effectiveness of those…