Environmental technology is an important issue for Wayss & Freytag Ingenieurbau AG. We have carried out the rehabilitation of former industrial and military bases, the removal of ground and groundwater damage using both technical and natural measures and the decontamination of buildings more than 20 years. We also offer site investigation, design and project management for the above-mentioned works. We offer well-thought-out ecologically and economically feasible solutions. In doing so our focus is on efficiency and cost-effectiveness. Backed by many years of experience, we are able to make a sustainable contribution to protect and restore the ecological basis for both mankind and environment.