Environmental remediation

Waterproof barrier between clean and contaminated ground.

Contracting services

Groundwater barrier

Geofrost provides groundwater barriers to limit the contaminated area and prevent spreading through the groundwater.

The frozen groundwater barriers become completely waterproof, regardless the type of ground conditions, and are therefore very reliable and efficient. The barriers have flexible shape and can be installed in-between pipes, cables and other obstacles and toward other construction elements in the ground, independently of irregularities in the surface.

Contaminated soils can be frozen and then excavated and transported in frozen condition, to prevent evaporation or draining of toxics.

Freeze dredging

Geofrost provides freeze dredging for removal of contaminated sediments in lakes and harbors. The contaminated sediment layer is frozen and then brought up as frozen blocks. The method provides minimal spreading of contamination in and outside the water, good control of removed sediment thickness and minimizes both water volume to be cleaned and contaminated soils to be deposited.

Contaminated sediments can beneficially be transported in frozen state to avoid spilling of contaminated water and evaporation of toxic constituents on their way to treatment and deposition.



Frost has the property of extending through any kind of ground condition and material, and therefore extend around any bodies, completely sealing towards uneven surfaces and around crossing pipes and cables and give a reliable result each time.

Minimal spreading

Contaminated soils which are frozen get incapsulated and will not spread in water or air. This provides safer handling and ensures minimal spreading.

Minimal volume

By isolating the contaminated soils, the volumes to clean and deposit are minimized.

What we deliver

We design and execute ground freezing for environmental remediation and provide all related consulting and contracting services.


  • Project management
  • Design and engineering
  • Numerical analyses
  • Design report, drawings and specifications.


  • Planning and procurement
  • Site management
  • Installation
  • Plant and equipment for brine and nitrogen freezing
  • Instrumentation
  • Monitoring
  • Excavation/lifting
  • Transportation

Where we operate

We offer our services worldwide.


Contact person

Anne-Lise Berggren, Ph.D., M.Sc
Senior specialist geotechnics
(+47) 95 29 29 30


If you have questions or would like more information, please contact us. With project info, we quickly provide price estimates.

Ground freezing since 1986.