The principles of soil protection, which must be followed in the use and maintenance of soil in gardens, agriculture and also in construction, are briefly summarised below:
- Intact soil should be preserved as a valuable resource and conserved as far as possible.
- If soils have been contaminated by influences in the past, this must first be investigated in order to assess the consequences. If pollutant levels are so high that there is a risk to users, measures must be taken (e.g. restriction of use, remediation) - a case that fortunately rarely occurs in our country.
- Where possible, excavated soil should be reused. However, pollutants should not be spread further in the process (no contaminated excavated material on clean soil).
The services we provide for landowners, builders and planners include pollutant investigations, soil protection concepts and, for example, accompanying of soil movements during construction (private control).
Soil investigation in the Werdinsel family garden area
The site is a former gravel pit that was used as a municipal landfill between 1969 and 1977. In addition to domestic and construction waste, commercial and industrial waste was also deposited. On behalf of the municipality Simultec AG carried out the preliminary investigation of the contaminated site in several stages. Subsequently, seepage water and adjacent springs were monitored for several years. The results showed that there is no danger to the groundwater nor spring water, so that no remediation was necessary and the monitoring could be stopped.
Client: Grün City of Zurich
Soil protection and remediation within the framework of the Dunkelhölzli garden project
As part of the project Gartenareal Dunkelhölzli, around 3.8 ha of new garden areas will be created on the outskirts of Zurich, embedded in a spacious, publicly accessible local recreation area with a stream redesign. Already in a very early planning phase Simultec AG has carried out a comprehensive soil investigation on the area on behalf of the city. Since on certain partial areas too high pollutant loads had been determined (exceeding the test value of the VBBo), a remediation project had to be worked out afterwards. Our soil and contaminated site experts are also members of the planning consortium and are responsible for the soil project during the building application and for the specialised site management during detailed planning, submission and execution.
Client: Green City of Zurich
Period: 2010 to date