HMP Onley Watermain Replacement BPRN: 582/20/7047

The MOJ Estate Directorate commissioned the Watermain Replacement Project at HMP Onley. The works to be included within this project involve the installation of a new MDPE below ground watermain to serve the properties located in Onley Park. The new watermain, and associated isolation valves and fittings will be installed in replacement of the existing watermain which was predominantly constructed from asbestos cement with additional cast-iron pipework.

The new watermain shall be installed to serve all 89 No. Onley Park houses and the existing redundant watermain system shall be removed in its entirety. The new watermain shall be reconnected to all existing individual service pipes from every house (89 No.) at the property boundary complete with new water meter(s).

A constructor has been appointed for the design and build of the project. This is a two stage Design and Build Contract let under the PPC2000 (Amended 2013) Form of contract. The original estimated value of the contract was calculated by MOJ, and its Cost Consultants following desktop and non-intrusive surveys and was based on information reasonably known at the time and arrived at via a thorough and appropriate methodology. It is expected that the total construction cost of the project will be c£3.1.The first stage will involve the constructor providing Pre-construction surveys and design services at a cost of £253,733.00.