In Liechtenstein the Grundbauberatung-Geoconsulting AG has started from the early summer 2020 on several old deposits in the municipalities of Balzers, Triesenberg, Mauren and Schellenberg with historical contamination investigationsHistorical investigations, which were partly completed in summer / autumn or are still in process. In the case of the already completed Historical investigations, we will now carry out the technical investigations of contaminated sites.