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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.

Article Index

Soil Guideline Values (SGV) and supporting technical guidance are intended to assist professionals in the assessment of long-term risk to health from human exposure to chemical contamination in soil.

There are different SGVs according to land-use (residential, allotments, commercial) because people use land differently and this effects who and how people may be exposed to soil contamination.

SGV are 'trigger values' for screening-out low risk areas of land contamination. They give an indication of representative average levels of chemicals in soil below which the long-term health risks are likely to be minimal. Exceeding an SGV does not mean that remediation is always necessary, although in many cases some further investigation and evaluation of the risk will be carried out.

SGV should not be used where they are not representative of the site under investigation. They do not assess other types of risk to human health such as fire, suffocation, explosion, or short-term and acute exposures. They also cannot be used to assess risks to controlled waters, property, pets and livestock, or ecological receptors.

SGV are available only for a limited number of chemical substances. However, the framework reports and software provide a starting point for the assessment of a much wider range of chemicals.

Professionals and regulators assessing risks to health from land contamination are not required to use SGV and the supporting technical guidance. Alternative approaches can be used provided that they satisfy the legislative requirements.

Framework Reports

The principles and method used to derive SGV is described in two main framework reports:

Professionals should be familiar with the information in these reports before using SGV in site assessments.

SGV and TOX Reports

The EA published SGV Reports and TOX Reports for a small number of soil contaminants. TOX Reports describe the toxicology of specific chemicals or groups of related chemicals including a summary of expert group evaluations. They also set out the recommended health criteria values (HCV) used in SGV derivation.

SGV Reports discuss the available evidence for the presence of specific chemicals in soil and their fate and transport in soil systems. In addition to the SGV themselves, the SGV Reports contain other useful information to assist risk assessors.

CLEA Software

The EA published the calculations for deriving SGV as described in the framework reports as a spreadsheet for use by professionals in conjunction with the wider guidance. The CLEA software is written using Microsoft Excel and uses VBA macros to support functionality. In addition, a specific spreadsheet has been published to support the assessment of dioxins in soil.

FAQs

The Environment Agency compiled a list of the most frequently asked questions (PDF, 121KB).

  1. MidLE and YCLF are running a Poster/Infographic Competition

    MidLE and YCLF are running a Poster/Infographic Competition

     July 2024
    Midlands Land Events (MidLE) and Yorkshire Contaminated Land Forum (YCLF) are running a Poster/Infographic Competition on "SilotoSoil: The importance of understanding your site...
  2. Scottish Government publishes the latest vacant and derelict land survey results

    Scottish Government publishes the latest vacant and derelict land survey results

     July 2024
    The Scottish Government has published the latest Scottish Vacant and Derelict Land Survey 2023. The report shows that the amount of derelict and urban vacant land fell by 1% in...
  3. Drinking Water Inspectorate publishes its annual report for public supplies in England

    Drinking Water Inspectorate publishes its annual report for public supplies in England

     July 2024
    The Drinking Water Inspectorate has published its annual report on public supplies in England.  It is available to download here.
  4. GPVS application window open until 31 August 2024

    GPVS application window open until 31 August 2024

     July 2024
    The Gas Protection Verification Accreditation Scheme (GPVS) application window is now open and closes on 31 August 2024.  The application window is open to Technician Grade and Specialist Grade applicants.
  5. Report from Soils in the South East Workshop 19

    Report from Soils in the South East Workshop 19

     June 2024
    The 19th Soils in the South East Workshop (SSE19), jointly held by the University of Greenwich, CL:AIRE and ISCOWA on 14 June, was a great success! Delegates were treated to...
  6. Register now for Contamination & Land Remediation Expo

    Register now for Contamination & Land Remediation Expo

     June 2024
    Environmental Services & Solutions Expo (ESS) has announced registration is now open with a limited number of early-bird free tickets available, as the event returns to the NEC, Birmingham from...
  7. EiCLaR project publishes Summer 2024 newsletter

    EiCLaR project publishes Summer 2024 newsletter

     June 2024
    The EiCLaR project (Enhanced and Innovative In Situ Biotechnologies for Contaminated Land Remediation) has produced its third newsletter that is available for downloading here. It provides updates...
  8. GPVS winter 2024 application successes

    GPVS winter 2024 application successes

     June 2024
    CL:AIRE has recently finished interviewing the first tranche of 2024 applicants for the Gas Protection Verification Accreditation Scheme (GPVS).  There were nine applicants that went forward for interview (three Technician...
  9. BGS develops first national scale groundwater model

    BGS develops first national scale groundwater model

     June 2024
    BGS has developed the first national-scale groundwater model in Great Britain. The new model provides a unique tool for simulating groundwater resources at a national scale.  Further information is 
  10. BGS collaborates with Ordnance Survey

    BGS collaborates with Ordnance Survey

     June 2024
    Ordnance Survey and BGS have teamed up to add a range of geological data products to the OS Data Hub, making it easier for users to access and use geospatial...
  11. RICS publishes second edition of whole life carbon assessment for the built environment

    RICS publishes second edition of whole life carbon assessment for the built environment

     June 2024
    Royal Institution of Chartered Surveyors (RICS) has published the second edition of its whole life carbon assessment (WLCA) for the built environment. The second edition builds upon version one extending...
  12. BGS releases updates to its online utilities tool

    BGS releases updates to its online utilities tool

     June 2024
    British Geological Survey (BGS) has released significant updates to its online tool for validating geotechnical data held as AGS files.  The update includes improvements to the tool's user interface and...
  13. EU publishes Nature Restoration Law

    EU publishes Nature Restoration Law

     June 2024
    The European Council has adopted regulations on nature restoration. This law puts measures in place to restore at least 20% of the European Union’s land and sea areas by 2030,...
  14. GPVS next application window opens 1 July 2024

    GPVS next application window opens 1 July 2024

     June 2024
    The next Gas Protection Verification Accreditation Scheme (GPVS) application window will be opening on 1 July 2024 and closes 31 August 2024.  The application window will be open to Technician...
  15. Registration opens for ESS Expo 2024

    Registration opens for ESS Expo 2024

     May 2024
    Environmental Services & Solutions Expo (ESS) has announced registration is now open with a limited number of early-bird free tickets available. ESS Expo will return to the NEC, Birmingham from...
  16. Call for abstracts - Joint SoBRA / RSC Winter Conference 2024 Current Issues in Contaminated Land Risk Assessment

    Call for abstracts - Joint SoBRA / RSC Winter Conference 2024 Current Issues in Contaminated Land Risk Assessment

     May 2024
    SoBRA/RSC are seeking abstracts for presentations for their Winter Conference on 10 December 2024 in London, either for an in-person or virtual presentation. The conference is on ‘Current Issues in...
  17. National Brownfield Forum publishes 2023/24 sector review summary report

    National Brownfield Forum publishes 2023/24 sector review summary report

     May 2024
    The National Brownfield Forum is delighted to be publishing its 2023/24 sector review summary report.  The sector review was an online survey open to the brownfield industry and interested parties...
  18. UKCEH publishes latest land cover maps

    UKCEH publishes latest land cover maps

     May 2024
    UK Centre for Ecology and Hydrology has now published Land Cover Map (LCM) 2022 and 2023. They have been produced by classifying satellite images from the respective years; each new...
  19. Interim PFAS C4SL published

    Interim PFAS C4SL published

     May 2024
    CL:AIRE is delighted to publish the next Phase 2 C4SL report on PFAS. It can be downloaded directly from the dedicated C4SL web page here. A short webinar...
  20. Environment Agency publishes water quality permit charging consultation results

    Environment Agency publishes water quality permit charging consultation results

     May 2024
    The Environment Agency has published the results of the consultation for water quality permit charging that was carried out earlier in 2024. The outcome of the consultation is
  21. Concawe publishes PFAS soil treatment processes report

    Concawe publishes PFAS soil treatment processes report

     May 2024
    Concawe has published a report titled PFAS soil treatment processes - A review of operating ranges and constraints.  The report looks at 13 treatment technologies that have been systematically evaluated. ...