Liesch Associates, Inc.

Airport Environmental Services


Here at Liesch, we have been providing environmental engineering services to airport clients since 1986. During this time we have developed a thorough understanding of airport management and operations, allowing for the development of cost-effective solutions in airport settings.


Storm water management and NPDES permitting and compliance have been the cornerstone of our service for the Metropolitan Airports Commission (MAC). We have guided the MAC through permitting processes, provided comprehensive storm water discharge monitoring and reporting, and provided oversight into a wide variety of compliance issues for over a decade.

  • Environmental Site Assessments
  • Groundwater & Soil Protection
  • Stormwater Management
  • Wastewater Treatment
  • Wetlands Services
  • Air Quality Services
  • NPDES Permitting & Compliance


We have helped assess, design, and implement the Aircraft Deicing Fluid (ADF) Management Program at Minneapolis/St. Paul International Airport (MSP) that remains one of the most successful ADF containment programs in the industry. We provide oversight of the containment, collection, recycling, and treatment of spent ADF fluid and monitor advancements in the industry in order to continually improve the performance of the program.

  • Aircraft Deicing Fluid (ADF) Containment & Management
  • Tank/Spill Regulatory Compliance
  • Hazardous Waste Management
  • SPCC Preparation
  • Industrial Discharge Permitting and Compliance


The Minneapolis/St. Paul International Airport is currently undergoing a multi-billion dollar expansion. Liesch's expertise with groundwater and soil investigation and remediation, tank/spill regulatory requirements, asbestos abatement, and solid/hazardous waste management ensures the construction projects remain on schedule and comply with applicable regulations. When an unexpected situation does arise, our experience in the field helps to provide a reliable, responsible, and timely solution.

  • Groundwater and Soil Investigations and Remediation
  • Tanks and Spill Regulatory Requirements and Response
  • Asbestos Abatement
  • Solid Waste Management
  • Hazardous Waste Management
  • On-Site Management of Environmental Issues
  • Construction Dewatering, Permitting, and Design


At Liesch, we can provide expert assistance on construction permitting, air permitting and compliance, wastewater treatment, environmental site assessments, wetland services, and virtually any other environmental issue that may arise. Our commitment to full service environmental consulting provides the wide range of services that an airport typically requires. Our ability to draw from numerous areas of expertise provides the resources necessary to plan for the future knowing that environmental requirements are both accounted for and completed on time while minimizing any effect on airport operation.

  • Air Permitting and Compliance
  • Wastewater Management/Treatment
  • Environmental Site Assessments
  • Wetland Services
  • Environmental Review of Planned Projects

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