Source: https://tendernation.io/opportunities/01a13be0-48e4-737e-be64-3f44d2f628bd/welsh-potosi-esgair-ffriath-surface-water-management awarded GB negotiated without publication procedure # Welsh Potosi - Esgair Ffriath Surface Water Management [Mining Remediation Authority](https://tendernation.io/buyers/mining-remediation-authority) Estimated value Not stated Published 2 Jun 2026 Deadline Rolling deadline ## About this tender The Welsh Potosi project forms part of a wider programme delivered by the Wales Metal Mine Programme (WMMP), with the objective of reducing river pollution and restoring river health affected by historic metal mining. The Welsh Potosi Project comprises two mine sites - Esgair Hir and Esgair Ffriath. The works described here are located on the Esgair Ffriath mine site. Esgair Ffriath is located approximately 8.7km east of Tal-y-Bont, Ceredigion. To address the impacts of legacy mining at Esgair Ffriath, it is proposed to construct scour protection measures, modify site drainage, and erect new fencing. The primary driver for the proposed works is to keep clean water clean and reduce the mobilisation of metal-rich sediment from the former Esgair Ffriath dressing floor into the receiving watercourses of the Nant Du and Afon Lluestgota, thereby reducing impacts on the Nant-y-Moch Reservoir and ultimately the River Rheidol. The site is in an area of sensitive ecology and heritage and so measures to protect this will be incorporated into this scope and the accompany Environmental Action Plan (EAP). The site is designated as the Mwyngloddfeydd Esgair Hir ac Esgair Ffraith Mine Site of Special Scientific Interest (SSSI) and Regionally Important Geodiversity Sites (RIGS). This SSSI is designated for its assemblage of lichens associated with metal-rich habitats (metallophyte lichens); an exceptionally rich assemblage of ferns and related plants (pteridophytes); and the rare metallophyte liverwort Copperwort. The site is of archaeological significance and contains numerous heritage features associated with historic mining activity, including the former dressing floor, engine pits, shafts and adits. Read full description Source Find a Tender (UK) · Notice ocds-h6vhtk-06abcb-2026-06-02T16:27:03+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-06abcb-2026-06-02T16:27:03+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Mining Remediation Authority: past awards and live tenders](https://tendernation.io/buyers/mining-remediation-authority) ## More tenders like this [Bannister Sports Centre Athletic Track Soft Market Testing Exercise · Harrow Council · 38 days left · 26 Nov 2026](https://tendernation.io/opportunities/01a1540d-d9e4-71cb-ad57-1603e9042fec/bannister-sports-centre-athletic-track-soft-market-testing-exercise) [Engineering works and construction works – Integrated Partnerships Framework · Northern Ireland Water · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a156a9-7b9a-73c9-b710-2a5021d3fa0d/united-kingdom-engineering-works-and-construction-works-integrated-partnersh) [Hdc-1714 wadkins pavilion refurbishment · Harborough District Council · 39 days left · 27 Nov 2026](https://tendernation.io/opportunities/01a155bf-f664-72f9-9823-a85d6cddbdc6/hdc-1714-wadkins-pavilion-refurbishment) [Design, supply, and Installation of Newbiggin Skatepark Extension · Newbiggin Town Council · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15552-19a2-7348-a5cc-3f5ae51ef934/design-supply-and-installation-of-newbiggin-skatepark-extension) [Tender for the design, supply, delivery and installation of a modular UNIT and associated works at ARC healthy living, irvinestown. peaceplus funded upgrade works · Fermanagh and Omagh District Council · 14 days left · 2 Nov 2026](https://tendernation.io/opportunities/01a15552-1b74-73ec-a6f6-a1af37959997/tender-for-the-design-supply-delivery-and-installation-of-a-modular-unit-and-a) [Architectural, design and building consultancy services - Dalby Visitor Centre · Forestry Commission · 25 days left · 13 Nov 2026](https://tendernation.io/opportunities/01a15552-1b8a-7041-80fb-e4943876fc38/architectural-design-and-building-consultancy-services-dalby-visitor-centre)