In our application for development consent this site connects the existing local combined sewer overflow (CSO), known as the Earl Pumping Station CSO, to the main tunnel via a long connection tunnel, known as the Greenwich connection tunnel.

Earl Pumping Station is an existing Thames Water pumping station site. The proposed site includes four adjacent plots of industrial land south of the pumping station and areas of highway. The location of the site is shown below.

Construction is assumed to start in 2017 and be completed by 2021. Where appropriate some advance works may be carried out before the main construction period.

Work includes construction of underground structures to connect the CSO to a shaft approximately 51 metres deep with an internal diameter of approximately 17 metres. This shaft would be constructed to the south of the existing pumping station compound, and would transfer sewage flows from the CSO to the Greenwich connection tunnel.

While most of the operational structures would be below ground, the shaft would be finished approximately three metres above ground level with ventilation structures incorporated into the building above the shaft. Several other ventilation structures would also be permanent above ground features.

Please refer to the application documentation on the Planning Inspectorate’s website (link below) for full details of our proposals for this site.

http://infrastructure.planningportal.gov.uk/projects/london/thames-tideway-tunnel