2015 Report details for project: Thames Tideway Tunnel

Project name Thames Tideway Tunnel - there are 4 reports for this project: 2014, 2015, 2016, 2017
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Organisation DEFRA (D7) - see all reports for this organisation
Report year 2015 (data is from September 2014)
Category Infrastructure - see all reports for this category
Description: Population growth, increased urbanisation and changes in rainfall patterns mean that London’s sewerage system, largely built in the late 19th century, is operating close to capacity and as a result discharges of sewage to the Thames are occurring regularly and not just as exceptional events. This is unacceptable on environment and health grounds. The proposed Thames Tideway Tunnel is the most cost effective, comprehensive and timely solution to address the problem of combined sewer overflows into the Thames in London, and is due for completion in 2023. In principle the duty to build the Thames Tideway Tunnel falls to Thames Water (who lead the project) and oversight of customer interests falls to Ofwat. As lead Department, Defra is responsible for the regulatory regime for the water sector and is exposed to the risk of fines arising from a European Court of Justice case, which has found the UK in breach of the Urban Waste Water Treatment Directive in London. Defra is providing a contingent support package to the Infrastructure Provider to ensure that they are able to raise the necessary finance in the capital markets. Defra is working with stakeholders to ensure continued value for money for Thames Water customers and UK taxpayers.
DCA (RAG) Amber/Red
DCA text: The Amber/Red rating reflects the inherent risks in a project of this size and duration, and the risks associated with the Infrastructure Provider procurement and in particular external risks which could affect the schedule. Since Q2 2014/15 the Preferred Bidders for the three Main Works contracts have been announced by Thames Water and good progress has been made with the procurement of the Infrastructure Provider which remains on track for construction to start in 2016.
Start date 2010-09-07
End date 2023-12-31
Schedule text Project delivery is currently on schedule.
Baseline £2.48m
Forecast £2.48m
Variance 0.00%
Variance text: Budget variance less than 5%
Whole Life Cost £0.00m
WLCost text: The latest whole life cost figure, updated at Outline Business Case stage and reported at Q2 2014/15, is not yet in the public domain. The procurement of the Infrastructure Provider is underway and to release this figure now could have significant implications for the procurement.
Notes1: Data Exempt under Section 43(2) of the Freedom of Information Act (2000)
Sourcefile IPA_2015.csv

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