Tender

Culvert Flow Gauging Structure - Ceredigion

Mining Remediation Authority

UK4: Tender notice - Procurement Act 2023 - view information about notice types

Notice identifier: 2025/S 000-068358

Procurement identifier (OCID): ocds-h6vhtk-055080 (view related notices)

Published 24 October 2025, 6:19pm

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.

Total value (estimated)

£125,000 excluding VAT
£150,000 including VAT

Below the relevant threshold

Contract dates (estimated)

26 January 2026 to 30 June 2026
Possible extension to 31 October 2026
9 months, 6 days

Description of possible extension:

If works are impacted by weather or other unforeseen circumstances

Main procurement category

Services

CPV classifications

71300000 - Engineering services

Contract locations

UKL1 - West Wales and the Valleys

Participation

Particular suitability

Small and medium-sized enterprises (SME)

Submission

Enquiry deadline

1 December 2025, 5:00pm

Tender submission deadline

8 December 2025, 5:00pm

Submission address and any special instructions

All relevant information with regard to this opportunity is freely available on the Mining Remediation Authority procurement portal and can be accessed under the Open Opportunities section by following this link.

- http://Inbye.coal.gov.uk/s2c/

Tender submissions must be made through this procurement portal.

Tenders may be submitted electronically

Yes

Award criteria

Technical and Cost criteria

Technical Criteria - 60% of available marks

Cost criteria - 40% of available marks

Procedure

Procedure type

Below threshold - open competition

Documents

Associated tender documents