Minneapolis – LieschGeolocation: 44.9959, -93.4503

Our Minneapolis, Minn. office was built to serve our upper Midwest clients. With hometown roots reaching back to 1968, Liesch Associates, joined Terracon in 2013 and provides a full range of environmental services. The variety of specialized environmental services includes asbestos and lead services, brownfields and site redevelopment, ESAs, industrial hygiene, solid waste planning and design and more. We proudly serve clients in the agricultural, commercial and retail, federal, industrial and transportation/infrastructure markets. Our tailored local services, and commitment to outstanding service has positioned our Minneapolis office to deliver successful projects for regional communities and clients.

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 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 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…

On-Call Environmental Services Minneapolis-St. Paul International AirportGeolocation: 44.8836, -93.215
For more than 25 years, Liesch Associates, a Terracon Company (Liesch) has served as environmental consultant to the Metropolitan Airports Commission (MAC). We have completed more than 500 MAC projects at the Minneapolis-St. Paul International (MSP) Airport and the six reliever airports. The cornerstone of Liesch’s MSP experience has related to stormwater compliance and addressing the need for management of glycol impacted stormwater during the deicing season. The airport is a highly visible permittee for state regualtors and Liesch has served as a regulatory liaison for the MAC on many…