Scope
Reference
CA18/2/1/117
Description
The Authority invites you to tender for a contract for the provision of the construction of a flow monitoring structure at the outfall of a historic culvert. This culvert drains the dressing floor of a former mine site.
The purpose of the structure is to enable accurate measurement of water flows entering a recently lined stream.
The construction of a flow gauging structure at Frongoch is necessary to measure the volume of water discharging from the culvert beneath the Frongoch dressing floor.
This will enable accurate quantification of heavy metal loading into the Frongoch stream, and subsequently into the Nant Cell and Afon Ystwyth.
Accurate flow measurement is essential for a comprehensive assessment of the need for a mine water treatment scheme, and future design. Future flow monitoring, assessment or design does not form part of this contract.
The works associated with the Frongoch Culvert Flow Monitoring are inclusive of breaking into the existing below ground culvert, as shown on drawing FCFM-AEC-XX-XX-DR-C-0003, the installation of approximately 80m of pipework, a headwall with associated access steps and V-notch weir to allow for flow monitoring.
Contract 1. Culvert Flow Gauging Structure - Ceredigion
Supplier
Contract value
- £211,574.91 excluding VAT
- £253,889.89 including VAT
Below the relevant threshold
Award decision date
22 December 2025
Earliest date the contract will be signed
14 January 2026
Contract dates (estimated)
- 19 January 2026 to 30 April 2026
- Possible extension to 30 September 2026
- 8 months, 13 days
Description of possible extension:
Contract date contingent upon external factors and may also be subject to delays on site once work has commenced
Main procurement category
Services
CPV classifications
- 71300000 - Engineering services
Contract locations
- UKL1 - West Wales and the Valleys
Information about tenders
- 5 tenders received
- 5 tenders assessed in the final stage:
- 5 submitted by small and medium-sized enterprises (SME)
- 0 submitted by voluntary, community and social enterprises (VCSE)
- 1 supplier awarded contracts
- 4 suppliers unsuccessful (details included for contracts over £5 million)
Procedure
Procedure type
Below threshold - open competition
Supplier
FIVE RIVERS ENVIRONMENTAL CONTRACTING LTD
- Companies House: 05084974
- Public Procurement Organisation Number: PCZJ-2138-MXRQ
Suite 2 Healey House, Dene Road
Andover
SP10 2AA
United Kingdom
Email: sales@five-rivers.com
Website: https://five-rivers.com/
Region: UKJ36 - Central Hampshire
Small or medium-sized enterprise (SME): Yes
Voluntary, community or social enterprise (VCSE): No
Contract 1. Culvert Flow Gauging Structure - Ceredigion
Contracting authority
Mining Remediation Authority
- Public Procurement Organisation Number: PRPD-5825-QDVY
200 Lichfield Lane
Nottinghamshire
NG18 4RG
United Kingdom
Contact name: Peter Kobryn
Region: UKF15 - North Nottinghamshire
Organisation type: Public authority - central government