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  Thames Water has awarded AMEC a GBP28 million contract to construct a 4.5 km-long 2.85 m-diameter concrete-lined tunnel will run from an existing shaft at Thames Water's reservoir site in Stoke Newington and join the Ring Main at the New River Head pumping station in Finsbury. The geology will consist of varying ground conditions, ranging from London clay to Thanet sands. AMEC will use a Lovat EPB TBM to tunnel under Highbury and Islington, crossing under six London Underground tunnels, five Network Rail tunnels, a canal tunnel and two major sewers. The contract involves also the sinking of two 50 m-deep launch and reception shafts for the TBM. Detailed design begins immediately with work on site scheduled to start in July this year. Completion is planned for spring 2010. The project forms part of a GBP90 million strategic improvement to the Ring Main, which also includes the construction of a new tunnel from the Honour Oak reservoir in Forest Hill to Brixton. Visit www.lovat.com, www.amec.com and www.thames-water.com 06/07.Morgan Est has been awarded a GBP38 million contract by Thames Water to design, construct and commission a 4.9 km tunnel in south London. The tunnel will extend the Thames Water Ring Main from an existing shaft in Brixton to a new pump out shaft at Honor Oak Reservoir. The tunnelled extension and provision of a new pump out facility at Honour Oak includes associated mechanical, electrical, instrumental, control and automation works. Work on site is due to start in March 2007 and will be completed in March 2010. Visit www.morganest.com and www.thames-water.com 07/07.