CL:AIRE is a UK charity committed to providing a valuable service for all those involved in sustainable land reuse.
We develop training resources, disseminate information and act as a credible resource for all stakeholders, ensuring we remain at the cutting-edge of best practice and innovation.

 

Improving efficiency & raising standards
Improving efficiency & raising standards
Definition of Waste Code of Practice (DoWCoP), National Quality Mark Scheme for Land Affected by Contamination (NQMS), Asbestos in Soil, SuRF...
Supporting our Members
Supporting our Members
Find out about the benefits of becoming a CL:AIRE Principal or Supporter Member:- Member discounts, Networking, Working Groups, ...
Sharing Knowledge & Developing People
Sharing Knowledge & Developing People
Water and Land Library ( WALL), Continuing Professional development through Training and workshops...
CL:AIRE Membership
CL:AIRE works with its Members to raise awareness and pursue shared objectives in land, water and environmental management by collecting strategic industry information and developing industry initiatives that improve efficiency and save money.
Gas Protection Verification Scheme (GPVS)
The GPVS seeks to raise standards in membrane inspection, verification and reporting and provide confidence that risks associated with ground gases have been adequately managed.
Definition of Waste Code of Practice
The Definition of Waste Code of Practice (DoWCoP) provides a clear, consistent and efficient process which enables the reuse of excavated materials on-site or their movement between sites.

Find out more...Register of materials...
Make a declaration...
NQMS for Land Contamination Management
The National Quality Mark Scheme for Land Contamination Management (NQMS) is developed by the National Brownfield Forum to provide visible identification of documents that have been checked for quality.

 

CLUSTER Initiative

Developed by CL:AIRE and funded by Grantscape, The Homes and Communities Agency, National Grid, Sheffield City Council, SAGTA (Soil and Groundwater Technology Association), and VHE to establish a systematic and sustainable approach to dealing with certain types of contaminated sites.

Cluster is a method for developing and remediating a group of sites that are relatively close to each other that would be either uneconomic to develop on their own or represent an opportunity to act in a more sustainable manner, for example to save on costs, reduce resource consumption and environmental impacts. In addition, significant reductions in the timescale of projects may be achieved. With the added advantage of bringing a number of contaminated and derelict land back into beneficial use with associated community gains.

After treatment on the hub site, some or all of the material may be suitable for use on either the originating site or on another site within the Cluster group. In addition, some materials may be treated to enable their reclassification from hazardous to non-hazardous, thereby providing the opportunity to dispose of materials with no reuse potential in local waste management facilities.

Cluster projects have three guiding principles in that they are:

  • Temporary – operate only as long as the sites defined within the Cluster are being developed
  • Local – in terms of being demonstrably appropriate having regard to participants and their sites, geographical distance, relative savings and practical issues
  • Provide a more sustainable way of developing land

 

Cluster is an excellent vehicle to deliver:

  • Cost savings
  • Reduced waste production and diversion of waste from landfills
  • Reduced resource consumption
  • Reduced vehicular emissions

 

All of which supports Government policies relating to sustainable development underpinned by a risk based decision framework and “suitable for use” approach. It furthers the “proximity principle” and supports bringing land back into beneficial use as set out in the National Brownfield Strategy.

There are a number of organisations and individuals that can benefit from developing land via the Cluster approach. These include:

Landowners / Developers

A single landowner/developer may provide the Hub site and the Donor and Receiver site(s), particularly those with sites with similar contaminant profiles.Alternatively other landowners/developers may consider putting their site forward as a Hub site with a view to developing a commercial short-term venture with a contractor. Owners/developers of other sites may subsequently become part of a larger Cluster, with the treated materials providing a source of imported materials.

Local Authorities

Cluster may provide a more effective solution whereby a number of sites in a single local authority boundary, or in partnership with neighbouring local authorities, can be developed. For example, town centre regeneration schemes or facilitating a regional master plan.

Contractors and Consultants

Cluster may represent a method whereby a contractor or consultant can deliver a cost effective solution to developing a number of sites in the same locality and hence delivering greater value, or furthering their clients environmental and social policies. For contractors it may also represent an opportunity to develop a short term commercial venture with a landowner.

In effect, Cluster encourages a joint and voluntary approach to the remediation of land affected by contamination and cost efficient development of other land.

For further information of the Cluster project, please contact us via the Help Desk.


Reconnaissance Call for Potential New Cluster Projects

As the Sheffield Pilot Project nears completion, Cluster is now looking for potential groups of sites to which the expertise and experience of your organisation and the Cluster partners can be applied. These groups of sites will be assessed for their suitability for application of the Cluster approach. The Cluster team would be grateful if you could consider whether this approach might be valuable to your organisation.


 

Reconnaissance call for new CLUSTER sites


As the Sheffield Pilot Project nears completion, CLUSTER is now looking for potential groups of sites to which the expertise and experience of your organisation and the CLUSTER partners can be applied. These groups of sites will be assessed for their suitability for application of the CLUSTER approach. The CLUSTER team would be grateful if you could consider whether this approach might be valuable to your organisation.

 

What is CLUSTER?

A typical CLUSTER donor/receiver site



CLUSTER is an initiative that is establishing a systematic and sustainable approach to dealing with certain types of land affected by contamination. Such land contains insufficient volumes of contaminated material to justify the use of on-site decontamination technologies, leading inevitably to decontamination by landfill disposal. There is an increasing body of evidence to suggest that such land represent the majority of sites affected by contamination in the United Kingdom.


FIGURE 1: A simple CLUSTER schematic

A CLUSTER is a group of sites that are categorised as land affected by contamination that includes shared exsitu decontamination capacity located at one site (the hub), supplied by sites that contain contaminated materials (donors) to produce recovered materials that are reused by itself and by the other sites in the group (receivers). This includes the potential use of untreated materials deemed unfit for purpose at their site(s) of origin, on a site or sites where their use would be acceptable within an agreed Remediation Strategy. In addition, some materials may be treated to enable their reclassification from hazardous to non-hazardous, thereby providing the opportunity to dispose of materials with no reuse potential in local waste management facilities. A schematic of a simple CLUSTER is shown in Figure 1

English Partnerships are working with CL:AIRE (Contaminated Land: Applications In Real Environments) and other partners to develop this concept. A Stage 1 Pilot project is underway (planning consent and Environment Agency authorisation in place) in Sheffield that will be used as the basis for rolling the CLUSTER approach out nationwide. This rollout is an exciting opportunity for public and private sector alike as it has the potential to:

  • Bring forward sites for development that would otherwise not be released
  • Deliver substantial cost savings of decontaminating such sites
  • Underpin the adoption of more sustainable remediation practices, thereby reducing the impact on the environment.

 

FIGURE 2: A complex CLUSTER schematic


The Sheffield Pilot is, by necessity, a simple project. It has focused on developing the tools necessary to surmount the institutional barriers that have prevented CLUSTER from being realised. Future comprehensive CLUSTER site projects will be more closely identifiable with market needs and will, therefore, be more complex and involve more parties, contamination scenarios, land end-uses etc. An example of a complex CLUSTER is shown in Figure 2 and we are now calling for new sites to help launch additional, more complex projects throughout the UK.


 

Potential Site Form and Screening Tool


As the Sheffield Pilot Project nears completion, CLUSTER is now looking for potential groups of sites to which the expertise and experience of your organisation and the CLUSTER partners can be applied. These groups of sites will be assessed for their suitability for application of the CLUSTER approach. The CLUSTER team would be grateful if you could consider whether this approach might be valuable to your organisation. If so, we will arrange to discuss the implications for you in taking this opportunity forward in your local area.

Below you will find a downloadable form to indicate (with strict confidentiality) your interest in proposing a site, or sites, for further CLUSTER projects. This form also includes a screening tool to help act as a guide to match your site appropriately.

Please return in confidence to:

Nick Willenbrock
CL:AIRE
1 Great Cumberland Place
London
W1H 7AL

Or fax back on +44 (0)20 7258 5322

CLUSTER POTENTIAL S

  1. Land Remediation Pathfinder Scheme - expressions of interest closing soon

    Land Remediation Pathfinder Scheme - expressions of interest closing soon

     April 2026
    Department for Environment, Food & Rural Affairs (Defra) has announced an Expression of Interest opportunity for the Land Remediation Pathfinder Scheme (LRPS). LRPS is a £80 million pilot scheme funded by Defra...
  2. Publication of MCERTS performance standard for rapid measurement techniques for the chemical testing of soil

    Publication of MCERTS performance standard for rapid measurement techniques for the chemical testing of soil

     April 2026
    On 27 April, the Environment Agency published new guidance called MCERTS: performance standard for rapid measurement techniques for the chemical testing of soil. The guidance describes the certification process for rapid...
  3. The Environmental Monitoring & Measurement Achievement Awards (the EMMAs) - call for nominations from land remediation industry

    The Environmental Monitoring & Measurement Achievement Awards (the EMMAs) - call for nominations from land remediation industry

     April 2026
    The Environmental Monitoring & Measurement Achievement Awards (the EMMAs) will return to Birmingham this year with an expanded scope, recognising excellence within the geoenvironmental and land remediation sector for the...
  4. New CL:AIRE Research Bulletin (RB22) published on legacy wastes in the coastal zone

    New CL:AIRE Research Bulletin (RB22) published on legacy wastes in the coastal zone

     April 2026
    CL:AIRE is pleased to publish a new research bulletin RB22: Legacy Wastes in the Coastal Zone which is available to download here. Legacy Wastes in the Coastal Zone: Environmental Risks and Management...
  5. EPA Ireland consults on developing national guidance for brownfield soil and stone by-product material

     April 2026
    The Environmental Protection Agency (EPA) Ireland has published a position paper for consultation as part of the development of national guidance for brownfield soil and stone by-product material. The guidance...
  6. UK Parliament's Environmental Audit Committee publishes its PFAS report

    UK Parliament's Environmental Audit Committee publishes its PFAS report

     April 2026
    The UK Parliament Environmental Audit Committee has now published its report Addressing the risks from Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) following its inquiry and call for evidence in April 2025.
  7. National Brownfield Forum March 2026 meeting notes now published

    National Brownfield Forum March 2026 meeting notes now published

     April 2026
    The National Brownfield Forum March 2026 meeting notes have now been published and are available to download here.
  8. Defra consults on BNG and targeted exemptions for brownfield residential developments

    Defra consults on BNG and targeted exemptions for brownfield residential developments

     April 2026
    Department for Environment, Food & Rural Affairs (Defra) is consulting on a possible exemption from biodiversity net gain (BNG) for certain residential developments on brownfield land. Further information is available here.
  9. HSE launches consultation on Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (RIDDOR)

    HSE launches consultation on Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (RIDDOR)

     April 2026
    The Health and Safety Executive (HSE) has launched a consultation on the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR) and it is now open for comments. The consultation seeks...
  10. Phase 2 of DoE Industry Profiles project is now complete

    Phase 2 of DoE Industry Profiles project is now complete

     March 2026
    A project to update 15 of the Department of Environment (DoE) series of 47 industry profiles has now finished with funding from the Environment Agency, Association of Geotechnical & Geoenvironmental...
  11. Defra publishes Land Use Framework for England

    Defra publishes Land Use Framework for England

     March 2026
    Department for Environment, Food & Rural Affairs (Defra) has published the Land Use Framework for England. It sets out how England can use its land more effectively. The Framework has...
  12. CL:AIRE connects the industry: Bristol networking evening sets the scene for summer event

     March 2026
    CL:AIRE hosted another successful members' networking event, this time in Bristol at Racks Bar and Kitchen. The evening brought together professionals from across the sector for relaxed, informal conversation. CL:AIRE Members...
  13. Environment Agency publishes national groundwater nitrogen inventory for England

    Environment Agency publishes national groundwater nitrogen inventory for England

     March 2026
    The Environment Agency Chief Scientist's Group has published outputs from a research project: National groundwater nitrogen inventory for England (SC210008). The project developed and tested new approaches to assess national-scale...
  14. Defra consults on amendments to the POPs regulation 2026

    Defra consults on amendments to the POPs regulation 2026

     March 2026
    Department for Environment, Food & Rural Affairs (Defra) is seeking views on proposed changes to the Persistent Organic Pollutants (POPs) Regulation, including drafted legislation to prohibit five new POPs to...
  15. RBKC Lead Modelling Tool published on WALL

    RBKC Lead Modelling Tool published on WALL

     March 2026
    The Royal Borough of Kensington and Chelsea (RBKC) Lead (Pb) values and modelling tool has been made available for all to use on the CL:AIRE Water and Land Library (WALL).
  16. BSI publishes document on ecological soil functions

    BSI publishes document on ecological soil functions

     March 2026
    British Standards Institution (BSI) has recently published PD ISO/TS 18721:2026 Ecological soil functions - Characteristics, indicators and methods. Further information and purchase options available here.
  17. SoBRA publishes two new NAPL guidance documents

    SoBRA publishes two new NAPL guidance documents

     March 2026
    The Society of Brownfield Risk Assessment (SoBRA) has published two new documents from the Non Aqueous Phase Liquid (NAPL) Subgroup. NAPL Document 6 - Advice Towards Understanding the Potential for LNAPL...
  18. Assessing risks to controlled waters in relation to climate change: SoBRA publishes updated guidance

    Assessing risks to controlled waters in relation to climate change: SoBRA publishes updated guidance

     March 2026
    The Society of Brownfield Risk Assessment (SoBRA) has updated its 2022 document, Guidance on assessing risk to controlled waters from land contamination under conditions of future climate change, to align...
  19. GWSDAT v.3.3 released

    GWSDAT v.3.3 released

     March 2026
    The GroundWater Spatiotemporal Data Analysis Tool (GWSDAT) has been updated and v3.3 has been released. GWSDAT is an open source, user friendly software application for the visualisation and interpretation of...
  20. JRC supports recently published European soil monitoring law

    JRC supports recently published European soil monitoring law

     March 2026
    The Joint Research Centre (JRC) is the science and knowledge service of the European Commission. The JRC has recently published a report on existing international and European standards relating...
  21. BSI publishes draft standard on ecological risk assessment of soil contamination (TRIAD approach) for comment

    BSI publishes draft standard on ecological risk assessment of soil contamination (TRIAD approach) for comment

     February 2026
    British Standards Institution (BSI) has published the draft International Standard Procedure for site-specific ecological risk assessment of soil contamination (soil quality TRIAD approach). Comments on the draft should be submitted...