Sewer construction, concrete construction and underground pipe drivage see preliminary remarks to the specifications

- approx. 990 m duct DN 2000 in closed design (pipe jacking, full cutting machine with liquid-supported face and compressed air loading) at depths of approx. 10 m to 11 m

- 3 tunnelling pits (press and tailings pits) at depths of approx. 11 m to 12 m

- 1 branch building (VZW 112 at the Alter Markt) with connection to the ESW

- Connection to existing building AB 112 in the tailings pit at the Alter Markt

- 1 dam structure (STBW 6) within the press pit on the St.-Etienne-Ufer

- 1 control shaft (Lindenstraße) sinked in the tunnelling line, depth approx. 9.5 m

- 1 flushing and ventilation shaft (Rudolf-Herzog-Straße) sunk in the tunnelling line

- Connecting structure Bachstraße and branch building VZW 99 to SWSammler including excavation pits

- Conversion VZW 3 and building S:41098 (Bachstraße)

- Conversion VZW 1 and renewal of slider S:41415 (Färberstraße)

- Relocation of supply and disposal lines in the construction area

- Securing the Bredde tailings pit and handing it over to a third party after the end of construction for later further expansion (2nd construction phase)