Minewater Treatment Civil Engineering, Refurbishment & Minor Works

In partnership with the Department for Energy Security and Net Zero (DESNZ), the Department for Environment, Food and Rural Affairs (DEFRA), the Environment Agency (EA), Scottish Environment Protection Agency (SEPA) and Natural Resources Wales (NRW), the Coal Authority delivers a program of Water Treatment facilities covering 70+ mine water treatment schemes across England, Scotland and Wales, ensuring that any accumulated mine water is responsibly treated before entering natural watercourses. The Coal Authority's schemes and solutions to the treatment of mine water prevents uncontrolled discharges of mine water and controls mine water levels within the underlying mine water blocks. Construction of treatment facilities are critical in preserving our natural environment from the after effects of mining, mitigating the risk of ocherous deposits smothering river beds, which impacts the ecosystem and cause's significant localised harm. The Coal Authority are seeking to appoint a number of Contractors to deliver design and construct and construct only services for new mine water treatment schemes and also to refurbish existing schemes along with associated minor works. The treatment of metal mine water will also fall within this scope to mitigate pollution caused by historical metal mining. Typical construction activities conducted within this framework may comprise of; • A brand new or major refurbishment of a mine water treatment scheme • Refurbishment and upgrade of existing mine water treatment schemes A further breakdown of the types of construction activities can be found on the additional information section of this notice. The proposal for the procurement is a framework for a total duration of 4 years. The Coal Authority are committed to becoming a more sustainable organisation (environmental and social) & want to use our work to help deliver positive change in the communities we support. We have an ambition to be a net zero organisation by 2030 and we will continue to decarbonise our activities. The delivery of the services will be critical to achieve these ambitions & our sustainable targets. Anticipated advert date: July 2024 Please note the dates and structure provided may be subject to change. Additional information: A brand new or major refurbishment of a Minewater treatment scheme, which may include; • Aeration systems - typically cascade structures • Settlement lagoons • Reed beds / wetland areas • Sludge handling facilities • Inlet and outlet structures and liner systems to the settlement lagoons and wetlands • Interconnecting channels and pipelines • Access roads and footpaths • Associated drainage works • Pumping infrastructure • Mechanical and electrical works for schemes where pumping to remote treatment area or from underground workings is required • Chemical dosing systems where required • Landscaping works, fencing and signage Refurbishment and upgrade of existing mine water treatment schemes, which may include; • Refurbish pumping infrastructure - pumps, pipework, valves • Refurbish electrical infrastructure - panels, cabling etc. • General building improvement to pumping stations including installation / refurbishment of building services • Flow monitoring structures • Mine water capture works, including collection chambers at existing discharge points • Installation of lagoons / reedbeds / sludge drying beds • Metalwork, gridding, hand railing etc. • Replacement of lagoon liners • Upgrade of existing access roads and footpaths • Refurbishment and upgrade of drainage • Refurbishment of landscaping works, fencing and signage • Refurbishment of chemical dosing systems where required. Note: This list is indicative only