Tees Pipeline

Northumbrian Water Limited are looking to appoint a contractor to design and construct a new water pipeline. The existing water pipelines between Lartington Water Treatment Works (WTW) and Long Newton Service Reservoir (SR) require replacing due to them approaching the end of their operational life.

The Treated water conveyance system is approximately 54km long and is proposed to be built in two phases.

Phase 1 (to be built under this contract) shall transfer up to 84MLD water from the existing water treatment plant at Lartington to Whorley Service Reservoir and up to 55MLD from the Inlet of Whorley Service Reservoir to Shildon Service Reservoir. Part of the route from Whorley to Shildon is dualled with two 800mm diameter pipes to be laid in the same trench.

There is also the option to include the pumping station (circa £3m) at Shildon Service Reservoir in the scope of this Phase 1 contract and this will be subject to agreement on requirement, cost and programme being acceptable to the Employer. Phase 1 is to be in service by 31st March 2025.

Estimated Value of Phase 1 (not including Shildon Pumping Station) - £62m

In addition Subject to clause 50(1)(f) of the Utilities Contract Regulations it is the intention that NWG will direct award Phase 2 of this project to the successful tenderer for Phase 1, due to it being an extension of the original work and consist of similar work activity. Phase 2 is of similar size and is planned to start in April 2025 and is required to convey up to 84MLD from Gainford to Long Newton Service Reservoir. Phase 2 requires completion by December 2028.

The estimated value of Phase 2 is £40m.

Any award of phase 2 would be subject to the satisfactory performance of the successful tenderer for Phase 1 and the ability to agree the price and programme for Phase 2. NWL would retain sole discretion on whether Phase 2 would be directly awarded to the successful tenderer or an alternative procurement was carried out.

The Phase 1 and 2 works will require a number of strategic river, rail and road crossings, strategic connections and a number of abandonments.

NWL reserve the right to award either all or part of each phase of the proposed contracts subject to budget constraints. NWL expects any shortlisted contractors to engage in value engineering with NWL to ensure maximum value can be delivered for the available budget.

NWL are looking to appoint a contractor to work collaboratively in line with NWG's vision and values while driving innovation and efficiency throughout the lifecycle of this project.