Closed

Construction of tilting weirs at Hatfield SAC part of Humberhead Peatlands NNR

Defra Network eTendering Portal · Value not published · closes 13 Feb 2018

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Estimated value

Closed

Deadline

15 Jan 2018

Published

This tender has closed.

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About this contract

As part of the Hatfield Moor restoration project it is proposed to incrementally increase local water levels to enable re-establishment of the native peatland species and return the currently drained peat land to a natural habitat. To achieve this, various manmade water channels are to be controlled to impound water and saturate the surrounding peat land. This will be facilitated by the installation of cut-off piles and the provision of adjustable tilting weirs that will enable modification of the upstream water level. Two existing weirs located in sites 3 and 4 are to be retrofitted by another sub-contractor prior to commencement. Therefore, the scope of works is as follows; to supply and install 3 tilting weirs around Natural England's Hatfield Moors Peatland site with associated water control valves across the existing drainage ditches, this includes installation of cut-off sheet piling to support the provision of the tilting weirs and installation of hand rails. Additionally, the works will include an aspect of re-profiling earthworks. NE are the 'Client' with Mott MacDonald acting as the Principal Designer and Project Manager for NE on this project,works to be carried out by the Principal Contractor, who will be the supplier appointed. Key Objectives are to deliver the project effectively and ensure that project completion and operational use is achieved by the 30th June 2018. Additional information: Please note that Defra procurement uses an E-tendering system for Procurement activities. This is currently provided by Bravo Solutions. To access appropriate tendering and contractual documents, please access the E-Tendering portal at https://defra.bravosolution.co.uk", ensuring that your registration includes "Defra". If you have any problems with this system, please contact Bravo on their telephone helpline number 0800 368 4850 or by emailing them at help@bravosolution.co.uk. "