A rendering of the 5ha site near the former colliery at Thorpe Hesley. Credit: WSP/Kier Group plc.

Kier has secured a contract to design and build a new water treatment scheme at Thorpe Hesley in Rotherham, South Yorkshire, UK.  

The scheme is a pumped-passive mine water treatment system, spanning a 5ha site near the former colliery. 

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The treatment process will involve an aeration cascade, settlement ponds, reed beds and associated pipework, with the clean water discharged into local watercourses.  

This project, awarded through the Pagabo public sector procurement framework by the Coal Authority, aims to manage the risk of rising mine water from old coal workings. 

Kier’s Natural Resources, Nuclear & Networks division will undertake the stage one design and enabling works, leading to the construction for stage two phase.  

Coal Authority Coal Programme lead James Bagnall said: “We are looking forward to working with Kier to deliver this important environmental scheme at Thorpe Hesley, as part of our work to provide long-term management of rising mine waters.” 

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The design phase commenced in August 2024. The site will see new trees, bushes, and wildflowers planted to enhance biodiversity and create wildlife habitats, upon completion of construction. 

In addition, Kier plans to integrate access tracks around the reed beds with existing footpaths.  

Kier’s Natural Resources, Nuclear & Networks’ Environment business managing director Eddie Quinn said: “We’ve been working closely with the Coal Authority and applying our skills and experience designing and building engineering schemes with vital long-term habitat creation to support the needs of this scheme in Yorkshire.” 

This development follows Kier’s recent announcement of its partnership with Leeds City Council for the redevelopment of the Leeds Town Hall.