La protection du loup

Monitoring and studies in both countries

5% of the Chiomonte tunnel budget was allocated to monitoring: an investment that is unprecedented for major international projects. In all the construction site areas, environmental requalification interventions are also planned, to encourage the revival of the original ecosystem once the works are completed.
Rigorous environmental controls

TELT’s commitment in all its sites can be summarised as a “Safeguarding the territory” programme. The basic premise refers to the environment as a natural habitat and to the historical and cultural system of the local communities.

The tools employed are the territorialisation of the project and a state-of-the-art system of environmental controls based on good practices already adopted during the excavation of the Chiomonte exploratory tunnel, where 135 parameters were constantly monitored with regard to the various components: subsoil, hydrogeological risk, surface and subterranean waters, air, vibrations, noise and electromagnetic fields.

Safe and controlled excavation material

The spoil transported out of the mountain is being constantly monitored. The strict controls on the excavation material carried out at the Chiomonte construction site have never revealed the presence of above-norm pollutant levels, and the new route minimises the possibility of encountering green rock formations.

However, as a precautionary measure, the construction site variant provides an ad hoc method for the processing of this material, as well as specific control measures for radon and uranium.

Any asbestos-bearing rocks will be buried directly in the tunnels excavated during the works, without ever going out into the open. This procedure is borrowed from ancient mining techniques which has already been successfully tested in the Cesana Torinese tunnel. It allows to keep the material inside the galleries and therefore avoids soil consumption, reusing the tunnels already excavated.

VIS and protection of the biodiversity

The HIA – Health Impact Assessment – conducted by the Occupational Medicine section of the University of Turin in the Chiomonte area is implemented in all the construction sites.
HIA is a study that measures the possible effect of a construction project on the health of the citizens. In Chiomonte, in particular, from the 62,000 samples collected from 40 stations in the four years of work, no critical issues emerged.

The study compiled by the University has shown that in Chiomonte the environmental values have been respected and there has been no negative impact on the health of the citizens who live near the construction site.

Furthermore, TELT has activated projects to protect biodiversity in areas affected by the construction sites: from the protection in Italy of the Zerynthia polyxena butterfly, of wolves, and of ungulates to the monitoring of toads and bats in France.