The Thames Tideway Tunnel is an under-construction 25 km (16 mile) tunnel running mostly under the tidal section of the River Thames through central London, which will provide capture, storage and conveyance of the combined raw sewerage and rainwater discharges that currently overflow into the river from London. Works commenced in 2016 with a target completion of 2022.
The scope of the works included the installation of a UV liner into the Low Level One Suction Culvert. The purpose of the liner was to prevent leakage of the existing Low Level 1 Suction Culvert during the piling and excavation activities for the interception shaft for the Tideway Tunnel. This also would protect the Low Level 1 Suction Culvert from the imposed loads created by ground movements and vibrations from excavation of the proposed CSO shaft at FALPS.