- earthmoving / excavation to restore 960 m trench profile,

- slope protection,

- drainage and drainage channel works,

- construction of inlet structure,

- Construction control shaft,

- construction passageway,

- Hydraulic engineering.

Main services are:

- Extract excavated soil from trenches and drop it next to 1 900 m 3 over a length of about 950 m,

- Profile trench profile 5 300 m 2 .

- manufacture concrete intake structure with bar screen,

Shaft for controlling the flow,

- Laying a DN600 piping to a length of 48 m,

- Construction of a DN600 passage of 7 m in length,

- Construction of an entertainment path 65 m in length.