The Siders East–Leuk/Susten East section of the A9 Rhone motorway of 8,510 m runs through the Pfynwald, a nature reserve of national importance. The section includes structures such as open lines (Sierre East, Preisen, Emsbach), covered cuts (Pfyn, Susten) and a tunnel (Susten) as well as various ancillary facilities (pumping stations, SABAs, etc.). The main part of the route (approx. 6,280 m) runs underground. In the construction phase, large-scale installation and interim storage areas are required. The mandate has the goal for the SIA phases 32, 41 and 51 to 53, the environmental construction supervision (UBB) for the A9 buildings (basis of the support project as well as conditions and conditions from the planning approval), the development of the specifications for the UBB of the A9 restoration and replacement measures mandates as well as the general support of the client in environmental matters.

The Siders East–Leuk/Susten East section of the A9 Rhone motorway of 8,510 m runs through the Pfynwald, a nature reserve of national importance. The section includes structures such as open lines (Sierre East, Preisen, Emsbach), covered cuts (Pfyn, Susten) and a tunnel (Susten) as well as various ancillary facilities (pumping stations, SABAs, etc.). The main part of the route (approx. 6,280 m) runs underground. In the construction phase, large-scale installation and interim storage areas are required. The mandate has the goal for the SIA phases 32, 41 and 51 to 53, the environmental construction supervision (UBB) for the A9 buildings (basis of the support project as well as conditions and conditions from the planning approval), the development of the specifications for the UBB of the A9 restoration and replacement measures mandates as well as the general support of the client in environmental matters.