Published date: 9 July 2018
Awarded contract - This means that the contract has been awarded to a supplier.
Contract summary
Industry
Primary water systems - 31161400
Cooling-water pumps - 42122161
Water-treatment work - 45232430
Water-treatment plant construction work - 45252120
Wastewater treatment plant construction work - 45252127
Water purification plant construction work - 45252210
Wastewater-plant repair and maintenance work - 45259100
Location of contract
SN2 2EH
Value of contract
£0 to £525,000
Procurement reference
P/REF 00000886 - AWARD
Published date
9 July 2018
Closing date
26 April 2018
Contract start date
1 August 2018
Contract end date
31 March 2021
Contract type
Service contract
Procedure type
Restricted procedure
A two-stage procedure, where the first stage is used to select suppliers, who are then invited to bid in the second stage.
Contract is suitable for SMEs?
Yes
Contract is suitable for VCSEs?
No
Description
Stonehenge is a prehistoric monument located in Wiltshire, approximately 2 miles west of Amesbury and 8 miles north of Salisbury. One of the most famous sites in the world, Stonehenge is the remains of a ring of standing stones set within earthworks. It is in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.
The site and its surroundings were added to the UNESCO's list of World Heritage Sites in 1986 in a co-listing with Avebury Henge. It is a national legally protected Scheduled Ancient Monument owned by the Crown and managed by English Heritage. Surrounding land is owned by the National Trust.
A new visitors centre, located at Airman's Corner approximately 1.3 miles from the stones, opened in December 2013. The centre houses permanent and temporary exhibitions, as well as a gallery, a gift shop, café, office space and toilet facilities. Also located on site is an ancillary building with site offices and essential services equipment. Given the distance between the coach drop off zone and the visitor centre toilet facilities, a new toilet block was built and commissioned in 2017.
Under the provisions of an Environment Agency abstraction consent, the potable water supply (PWS) on site is provided by a private borehole. It is subsequently treated for nitrogen and pathogen removal prior to storage and distribution. A second borehole provides the heating and cooling energy required for the ground source heating and cooling system (GSHC). This is an open loop system with the abstracted water being returned to a third borehole.
In an effort to reduce the volume of water abstracted for use on site, a n activated sludge membrane bioreactor (MBR) wastewater treatment plant is designed to treat wastewater to an extremely high standard in order that it may be re-used in the two toilet blocks for toilet flushing. As a secondary means of discharge, treated effluent may also be dispersed to a soakaway for infiltration to groundwater.
Vacuum drainage systems (VDS) installed at both toilet blocks reduce the volume of water required for each flush.
Whilst all of these systems are independent systems, they all work together to achieve the provision, distribution and treatment of water on site. Historically, these systems have been managed and operated independently without cross-communication between O&M providers, which has not allowed for the optimisation of their operation or the efficiencies afforded by bringing the management of these systems under a single point of operation responsibility.
As a part of three year cycle, English Heritage are re-visiting the operation and maintenance contracts that manage the potable water, ground source heating/cooling, vacuum drainage and the wastewater treatment plant. Given the critical importance of delivering safe drinking water, protection of the environment and the challenges of complian...
Award information
Awarded date
9 July 2018
Contract start date
1 August 2018
Contract end date
31 March 2021
Total value of contract
£409,067
This contract was awarded to 1 supplier.
Nijhuis Industries
Address
Nanjerrick Court, Allet, United Kingdom, TR4 9DJ
Reference
None
Supplier is SME?
No
Supplier is VCSE?
No
About the buyer
Contact name
Stuart Kenhard
Address
Firefly Avenue
Firefly Avenue
Swindon
SN2 2EH
United Kingdom
stuart.kenhard@english-heritage.org.uk
Website
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Closing: 26 April 2018
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