Sustainability Policy - Success Stories

The case studies below provide information on examples of successful sustainability within tunnelling projects.

Sustainability on Crossrail C310

A number of examples of sustainability from the Crossrail Thames Tunnel project.


The re-use of dewatering at CTRL

The re-use of dewatering water extracted during the tunnelling for the Channel Tunnel Rail Link (CTRL).


Construction of a ventilation shaft at CTRL

The construction of a ventilation shaft for the Channel Tunnel Rail Link (CTRL) from a confined site, adjacent to residential and business properties.


Retention of spoil on site at PLUG

The spoil from the tunnels required for the Power Lines Undergrounding at the Olympic Park was tested and retained on site.


Waste management on Harefield to Southall

Innovative backfill materials used around the tunnels and other initiatives led to a CEEQUAL Outstanding Achievement Award for waste management.


Materials Management Plan at WELM

During the construction of the West East Link Main, a Materials Management Plan, agreed with the Environment Agency, permitted the re-use on site of 30,000 tonnes of excavated material.