Asbestos removal and masonry work for the repair of leaks in the Olette gallery as well as the installation and replacement of discharge valves.

Confined work.

Presence of asbestos and radon.

The work will include the following services:

- Studies, site installation

- Preparatory work (installation of ventilation, de-silting, removal of stones, installation of a cofferdam)

- Asbestos removal of asbestos areas to be treated

- Installation or replacement of valves

- Repair of holes and cracks

- Waste disposal and site withdrawal

Schedule:

The repair work must take place between 03/09/2024 (emptying gallery: opening of watertight doors) and 28/09/2024 (closing of watertight doors).

The installation and folding of the site can be done before and after these dates (off-gallery work)