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Thames Tideway Tunnels Project, London, UK

Construction Start

2015 / 2016

Completion

2020

Estimated Investment

£3.6bn

Design Partner

AECOM

Thames Tideway Strategic Study Formed

2000

TTSS Members

Thames Water, Defra, the Environment Agency and the Greater London Authority (GLA)

Governmental Approval on the Tideway Tunnel

2007

DWF( Ml/day)

1344

FTFT ( Ml/day)

2336

BOD (mg/l)

8

AmmN (mg/l)

1

Crossness

DWF ( Ml/day)

597

FTFT ( Ml/day)

1118

BOD (mg/l)

8

AmmN (mg/l)

1

Mogden

DWF ( Ml/day)

559

FTFT ( Ml/day)

1064

BOD (mg/l)

11

AmmN (mg/l)

1

Thames Tideway Strategic Study formed

2000

Final Report

February 2005

Supplementary Report Delivered

November 2005

Option Assessment Report to Defra

December 2006

Governmental Approval on the Tideway Tunnel

March 2007

Crossness Improvement Work

Spring 2008 – 2014

Mogden Improvement Work

Spring 2008 – Spring 2012

Tideway Tunnel Construction Schedule

2012 – 2020

WWTPs Improvements

£400m

Tideway Tunnel

£2bn – 2.5bn (estimated)

Client

Thames Water

TTSS Members

Thames Water, Defra, the EA, GLA and Ofwat

Ofwat Consultants

Jacobs Babtie

Automation Systems

Rotork

Primary Sludge Settlement Equipment

Hydro International

Length

32.2km (Hammersmith to Beckton); 5.5km (Abbey Mills to Beckton)

Internal Diameter

7.2m

Construction Shafts

5

Pump-Out Shafts

1

CSOs Intercepted

36

Total Storage Volume

1,638,000m³
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