Explosive ordnance detection and clearance work as well as the construction of a construction road on several construction sites in the area of the planned tunnel construction west.

Explosive ordnance detection and clearance work:

- 42,000 m 2nd Surface sounding;

- 130,000 m exploratory drilling;

- 12,500 m 3rd Earthworks, prospecting.

Create construction road:

- Install 2,500 t of coarse impact as an improvement to the subsoil;

- 3 850 m 3rd Install anti-freeze material;

- 3,900 m 2nd Install combination geoplastic;

- 3 500 m 2nd Create asphalt base course;

- 3 500 m 2nd Make asphalt surface course.