BBT

Experts regularly take water samples for analysis in accredited laboratories. The Alps are the wellspring of Europe. To ensure that this will be preserved, the construction of the Brenner Base Tunnel is accompanied by a very extensive water monitoring programme. Between 2001 and 2005, before the construction works had even begun, numerous measuring points were established right across the main Alpine ridge and the monitoring of water sources began, so as to understand and observe the complex structure of the water balance along the project area and immediately determine if any adverse effects are being caused by the construction of the tunnel. There are now more than 1,300 measurement locations between Innsbruck and Fortezza, where the quality of surface and underground waters is measured. The properties of the water, such as the flow in springs and streams, groundwater levels, temperature and conductivity are ascertained before, during and after the construction of the tunnel. The amount of rainfall is also closely monitored. So it is possible to understand whether any changes in the water level are due to tunnel construction or variations in rainfall. A team of experts also regularly takes water samples to analyse their chemical composition in the lab. The Brenner Base Tunnel is being built at a great depth and for the most part through dense rock. This implies only a very slight risk of any water sources drying up. However, should the water balance along the project area change, there are already measures in place that can be implemented immediately so that there is no adverse effect on water supply. BRENNER BASE TUNNEL

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