Cwm Rhediol soil stabilisation trials

The Coal Authority
Wales
Selective procedure
18 August 2025 to 31 March 2026

The contract involves conducting ex situ soil stabilisation trials on legacy filter bed materials from the 1960s. The objective is to process excavated material to create a geotechnical and geochemically suitable fill for a future mine water treatment scheme. This is a technical feasibility and testing project focused on material suitability for ground engineering.

Open the official notice

Awarded value: £58k; As published
Published: 18 August 2025
Awarded: 18 August 2025; CE Geochem
Contract length: 7 months; Ends 31 March 2026

What the contract covers

Call-off from a dynamic purchasing system

Provision of specialist geotechnical and geochemical soil stabilisation trials to support the remediation of industrial filter bed sites.

Undertake stabilisation trials connected with remediation of the Cwm Rheidol filter beds
Excavate and process current filter bed material, including ex situ stabilisation as a ground engineering technique, to provide a geotechnical and geochemically suitable fill

Terms and requirements

Contract type: Call-off from a dynamic purchasing system
Procedure: Selective procedure
Initial term: 7 months
Contract dates: 18 August 2025 to 31 March 2026
Certifications asked for: None stated
Suitable for SMEs: Yes
Category: Services
CPV codes: 71356000

Services in this contract

Contaminated land and groundwater remediationMain service£259k typicalSoil stabilisation trials for filter bed remediation

Lifecycle

Published
18 August 2025
Contract awardedto CE Geochem
18 August 2025
Contract starts
18 August 2025
Contract ends
31 March 2026

The buyer

The Coal Authority

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The supplier

CE Geochem

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Cite this contract

Link: https://bidskim.com/tender/58255/cwm-rhediol-soil-stabilisation-trials
Buyer reference: CA18/2/14/22/22
Open contracting ID: ocds-b5fd17-2ec12a8f-8a68-4d65-a5e4-45699042c226
Last checked: 5 November 2026

The Coal Authority. Cwm Rhediol soil stabilisation trials. Contract award, 18 August 2025. BidSkim, https://bidskim.com/tender/58255/cwm-rhediol-soil-stabilisation-trials (accessed 5 November 2026).