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 permit and regulatory negotiations. We have operated and maintained continuous flow monitoring and sampling equipment for more than 17 years, 24 hours a day, and 365 days per year. This includes monitoring and sampling permitted discharges from the airport to a nearby lake and river; and providing glycol operations management.  We also conducted an asbestos, lead, and hazardous materials/special waste survey to assess the environmental issues that would be encountered during the demolition of the former Northwest Airlines Building B. Liesch spearheaded the MAC’s development and implementation of an Environmental Information Managements System (EMIS) that has greatly increased environmental operational efficienty, reducted overall risk to the organization, and reduced costs. We continue to oversee the management, enhancement, and future development of the EMIS technology solution. Most recently, liesch has been supporting the MAC’s efforts to develop a sustainability management plan for MSP.

St. Paul, MN 5511



Associated Office

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,