365,000 tons

contaminated soil

239 million euros 

estimated total costs

8 years

total duration of restoration

Currently Viewing

The challenge

Until the 1970s, the former gravel pits in Grenzach-Wyhlen—a municipality close to the borders of Switzerland, France and Germany—were being used as landfills for waste streams of various origins and compositions. The waste left behind—including residential and commercial waste, as well as waste from the chemical and pharmaceutical industries—is now polluting the groundwater. Roche Pharma AG is one of the companies that used this landfill to dispose of waste and now owns part of the site. In 2012, Roche decided to undertake a voluntary full restoration of its part of the former landfill known as "Kesslergrube".

The solution

Arcadis is managing the complex restoration process on behalf of Roche Pharma AG. Managing this organizationally and technically challenging project, which has attracted a great deal of public attention, involves tracking progress, costs and deadlines, as well as procurement processes, change management, claim management, risk management, emergency management and quality management.

The impact

By voluntarily embarking on a full restoration of its part of Kesslergrube, Roche Pharma AG is acknowledging its responsibility. The company plans to complete a high-quality, permanent restoration of the environmental damage, completely eliminating all risks posed to people and the environment. The area will be suitable for redevelopment for any purpose.


Applied capabilities

Connect with {name} for more information & questions

Arcadis will use your name and email address only to respond to your question. More information can be found in our Privacy office