Construction of the HT-BTES facility as part of the expansion of the Empa campus. It consists of 144 probes, which have been drilled and installed in a circular array below the new parking building (see left). (Photo: Empa)
Drilling activities performed east from the MF-building corresponding to the observation borehole located right next to the facility. (Photo: Joaquin Jimenez-Martinez, Eawag)
Drilling performed east from the MF-building at the Empa campus. (Photo: Joaquin Jimenez-Martinez, Eawag)
Installation of the monitoring station around the borehole located east from the MF-building on the Empa campus (Photo: Margherita Ferrarini, Eawag).
Cores obtained from the borehole drilled east from the MF-building, showing both the unconsolidated lake deposits and the deeper Molasse sandstone. (Photo: Joaquin Jimenez-Martinez, Eawag)
Monitoring station installed in immediate vicinity of the HT-BTES facility, right next to the MF-building. (Photo: Andres Velasquez Parra, Eawag)
Monitoring station located upstream of the facility along the main groundwater flow direction.(Photo: Andres Velasquez Parra, Eawag)
Monitoring station located downstream of the facility along the main groundwater flow direction. (Photo: Andres Velasquez Parra, Eawag)
Devices and installations hosted within the monitoring stations setup at each one of the three observation boreholes. The portable mass-spectrometer is visible on the right side. (Photo: Andres Velasquez Parra, Eawag)
Periodic sampling performed by the water chemistry and microbiology teams at the observation borehole in immediate vicinity of the facility. (Photo: Olga Schubert, Eawag)
Measurements are performed at the tree monitoring boreholes on water extracted from two different depths. (Foto: Numa Pfenninger, Eawag)
On-site sampling of biological material through groundwater filtering. (Photo: Andres Velasquez Parra, Eawag).
On-site sampling for environmental DNA analysis. Groundwater is filtered on site for capturing biological material. (Photo: Giulia Zecchin, Eawag)
Samples, including replicates, are collected from two different depths at each one of the three observation boreholes. (Photo: Olga Schubert, Eawag).
Laboratory analyses help determining the chemical composition of the extracted groundwater. (Photo: Numa Pfenninger, Eawag)
Drilling of the additional piezometer located south from the Forum Chriesbach at the Eawag campus. (Photo: Reto Britt, Eawag)
Drilling of the additional piezometer located further east from the monitoring stations, close to the Sekundarschule Stägenbuck. (Photo: Reto Britt, Eawag)
3D schematic of the project area, showing the thermal storage facility and the three observation boreholes (Photo: Eawag)
