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. UKHSA human biomonitoring study to include PFAS

    UKHSA human biomonitoring study to include PFAS

     November 2026
    The UK Health Security Agency (UKHSA) has launched a human biomonitoring study as part of a programme of work to improve understanding of levels of PFAS and other chemicals such...
  2. Proposed CL:AIRE Third-Party Accreditation Scheme for Secondary Aggregate Production

    Proposed CL:AIRE Third-Party Accreditation Scheme for Secondary Aggregate Production

     October 2026
    Subject to approval by the Environment Agency, CL:AIRE intends to operate an independent third-party accreditation scheme to support implementation of the Aggregates From Inert Waste: Resource Framework. Additional information about...
  3. Save the date for ESS Expo 2027

    Save the date for ESS Expo 2027

     October 2026
    Please put 15-16 September 2027 in your calendars for the return of Contamination & Land Remediation (CLR) Expo, part of the Environmental Services & Solutions (ESS) Expo. There is also...
  4. Third International Soil Reuse Forum meeting

    Third International Soil Reuse Forum meeting

     October 2026
    CL:AIRE was delighted to attend the third annual meeting of the International Soil Reuse Forum (ISRF) in Orléans, France, hosted by BRGM. The meeting, held on 22 September, included colleagues...
  5. RBKC publishes guidance for radon in basements

    RBKC publishes guidance for radon in basements

     October 2026
    Royal Borough of Kensington and Chelsea has recently published guidance for radon in basements. The guidance is geared towards developments through planning and building control, but has wider environmental application. The...
  6. Environment Agency consults on draft Resource Framework for Aggregate from Inert Waste

    Environment Agency consults on draft Resource Framework for Aggregate from Inert Waste

     October 2026
    The Environment Agency is consulting on the draft Resource Framework (previously known as Quality Protocol) for Aggregate from Inert Waste. The Environment Agency is consulting on the proposed framework, the...
  7. CL:AIRE's members enjoy networking event and dinner

     October 2026
    CL:AIRE recently hosted two member events, both were well attended with the opportunity to network and develop new contacts. The first event was the third networking event of 2026, this...
  8. Defra publishes updated plans to introduce mandatory digital waste tracking

    Defra publishes updated plans to introduce mandatory digital waste tracking

     October 2026
    Department of Environment, Food & Rural Affairs (Defra) has published its updated plans to introduce mandatory digital waste tracking, the benefits of this change, the timelines and impacts. Further information...
  9. SoBRA publishes new guidance on bulk earthworks and ground gas

    SoBRA publishes new guidance on bulk earthworks and ground gas

     October 2026
    The Society of Brownfield Risk Assessment (SoBRA) has published new guidance on bulk earthworks and ground gas. It is available to download for free here.
  10. Defra publishes updated ENCA Guidance

    Defra publishes updated ENCA Guidance

     October 2026
    Department of Environment, Food & Rural Affairs (Defra) has published updated Enabling Natural Capital Approach (ENCA) guidance to bring it in line with current government policy. It is available to...
  11. Defra requests for information on substances proposed as POPs 2026

    Defra requests for information on substances proposed as POPs 2026

     October 2026
    Department of Environment, Food & Rural Affairs (Defra) has requested information to feed into the draft risk profiles and draft risk management evaluations for three chemical substances proposed as Persistent...
  12. Environment Agency publishes reforms to waste exemption guidance coming into effect from January 2027

    Environment Agency publishes reforms to waste exemption guidance coming into effect from January 2027

     October 2026
    The Environment Agency has published reforms to waste exemption guidance that will be coming into effect from 6 January 2027.  These reforms are subject to parliamentary approval and are expected...
  13. OEP calls for evidence on barriers to nature recovery

    OEP calls for evidence on barriers to nature recovery

     October 2026
    Office for Environmental Protection (OEP) has opened up a call for evidence seeking specific examples of actual or potential blockers that prevent, delay or discourage the on-the-ground delivery of nature...
  14. Register for CL:AIRE webinar to support PFAS Remediation Technology Evaluation Framework

    Register for CL:AIRE webinar to support PFAS Remediation Technology Evaluation Framework

     September 2026
    Webinar: 1:00pm - 2:00pm (BST), 21 October 2026 CL:AIRE is hosting a 1 hour webinar on the PFAS Remediation Technology Evaluation Framework. Familiarity with the materials above would be beneficial to...
  15. Environment Agency updates BAT guidance

    Environment Agency updates BAT guidance

     September 2026
    The Environment Agency has updated its ‘Best available techniques’ (BAT) guidance. BAT means the available techniques which are the best for preventing or minimising emissions and impacts on the environment.  The...
  16. UKHSA publishes two new pieces of PFAS research

    UKHSA publishes two new pieces of PFAS research

     September 2026
    UK Health Security Agency (UKHSA) has published two new pieces of PFAS research. One is a rapid review of the health impacts from industrial sources of PFAS, available to download here.
  17. CL:AIRE publishes PFAS Remediation Technology Evaluation Framework and supporting materials

    CL:AIRE publishes PFAS Remediation Technology Evaluation Framework and supporting materials

     September 2026
    CL:AIRE is pleased to announce the publication of the PFAS Remediation Technology Evaluation Framework. The framework was developed by Geosyntec Consultants for the Environment Agency as part of a project...
  18. Three weeks to go until Contamination & Land Remediation Expo!

     August 2026
    We’re excited to be at Contamination & Land Remediation (CLR) Expo in just three weeks, returning to the NEC Birmingham on 16–17 September. Join us for two high-impact days of knowledge...
  19. RemTech Europe and Sustainathon programmes now live

    RemTech Europe and Sustainathon programmes now live

     August 2026
    RemTech Europe, International Conference and Exhibition on land and water remediation markets and technologies is taking place between 14-18 September 2026 and has now published its programme. The first two...
  20. MHCLG publishes new NPPF following consultation

    MHCLG publishes new NPPF following consultation

     August 2026
    The Ministry of Housing, Communities and Local Government (MHCLG) has published its new National Planning Policy Framework (NPPF). It sets out the government's policies for plan-making and for making decisions...
  21. National Brownfield Forum July 2026 meeting notes published

    National Brownfield Forum July 2026 meeting notes published

     August 2026
    The National Brownfield Forum July 2026 meeting notes have now been published and are on the dedicated web page National Brownfield Forum. The notes can be downloaded directly here.