Site with proven contamination of the underground.

Outline of a distinct volume of groundwater within an aquifer or system of aquifers, which is hydraulically isolated from nearby groundwater bodies and provides enough yield with suitable temperatures for open-loop systems (groundwater heat exchangers) with thermal storage at low temperatures.

Lack of data available to analyse the chemical properties of the of groundwater.

Specific annual thermal energy content for heating and / or cooling referring per surface area for borehole heat exchangers at a defined length.

Mean measured groundwater temperature based on surveys.

Zones possibly affected by a flood that statistically occurs once every 300 years.

Outline of a distinct volume of groundwater within an aquifer or system of aquifers, which is hydraulically isolated from nearby groundwater bodies and provides enough yield with suitable temperatures for open-loop systems (groundwater heat exchangers) without thermal storage.

Site which due to its use bears the risk of potentially contaminating the underground.

Sites with confirmed or suspected waste, landfills and/or underground pollution generated from domestic, construction and/or industrial activities that may have an impact on the installation of shallow geothermal

Zones possibly affected by a flood that statistically occurs once every 100 years