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View our Events and Training Listing to find out about upcoming conferences, training sessions and events in the contaminated land sector.

Validate your skills and experience using CL:AIRE's eLearning modules covering Remediation Technologies, Risk Assessment and Sustainable Remediation.


Latest Land Forum Minutes

The latest Land Forum minutes from the meeting held on the 25th June 2014 have now been uploaded onto the dedicated Land Forum website.  The minutes can be viewed here>>>


New Groundwater Monitoring Data Software Application (GWSDAT)

GWSDAT (GroundWater Spatiotemporal Data Analysis Tool) is freely available from the CL:AIRE website.  This free software application, developed by Shell, is open source, user-friendly and can be used for the visualisation and interpretation of groundwater monitoring data.  It's key features include:

  • Visualisation of site- wide trends in solute concentrations, NAPL thickness and groundwater elevation for conceptual site model development.
  • Spatiotemporal analysis: variation in groundwater solute concentration is modelled as a function of X,Y and time.
  • Automatic generation of concentration contour plots at user specified time intervals, with the option to overlay groundwater elevation contours and NAPL thickness/footprint data.
  • Automatic report generation tools with direct export of plots to Microsoft Office applications (e.g. Word, PowerPoint)

The benefits of using GWSDAT include:

  • Improved data transparency during the design and optimisation of groundwater monitoring or remediation programmes
  • Early identification of new releases, migration pathways, need for corrective action and stable/ declining trends that may aid in closure determinations.
  • Rapid analysis of complex data sets from large monitoring networks (e.g. refineries, terminals).
  • Efficient evaluation and reporting of groundwater monitoring trends via simple, standardised plots and tables created at the 'click of a mouse'.
  • Easy sharing of processed datasets as non-editable “.GWSDATData” files, thereby preserving the integrity of the underlying dataset.

To obtain access to GWSDAT click here>>>

Defra seeking views on draft European Commission Regulation that includes definitions for severely degraded land and heavily contaminated land

Details of the draft Commission Regulation, which proposes detailed definitions for severely degraded land and heavily contaminated land has been prepared and circulated to European Member States for comment. To download click here>>>

This Regulation will be voted on in the autumn, and Defra would appreciate input from stakeholders now so that they can raise issues or concerns with the Commission.

With this in mind Defra would be grateful for views on the Regulation, particularly on the following questions:

1. Overall do you think this regulation is helpful?

2. Do you think the definitions stated will be of benefit in classifying land which has been severely degraded and/or heavily contaminated; including the definitions as to when that land can be considered as converted to agriculture use?

3. Article 4 addresses when severely degraded land and heavily contaminated land could be considered as sufficiently converted to agricultural use. It covers i) increase in carbon stocks; ii) sizeable reduction in erosion phenomena; and iii) reduction in the level of hazardous substances; but it does not state what has to be done in order to achieve these. By omitting this do you think an unhelpful incentive could be created?

Please respond directly to Maggie Charnley Defra, Head of Soils and Contaminated Land by email: This email address is being protected from spambots. You need JavaScript enabled to view it. by 5th September 2014.

New C4SL Workshops Announced

CL:AIRE is delighted to announce it is running three workshops in association with the project consortium partners that developed the Category 4 Screening Levels (C4SLs) on the following dates:

London:  September 23rd 2014
Manchester: October 14th 2014
Birmingham: November 26th 2014 (In association with EP UK West Midlands Region)

For further details and to download the PDF flyer click here>>>


£150 + VAT (CL:AIRE members discounts apply)


The aim of the workshop is to:

- Explain the drivers and purpose of the C4SLs
- Understand  the methodology and approach that was taken to derive the C4SLs for all six substances
- Better understand how C4SLs should be used
- Learn what should be considered in the derivation of other C4SLs

Each workshop will have two presenters (a toxicologist and exposure modeller) to enable participants to have the opportunity to learn both key aspects.  Numbers are limited to 40 people so book your place to avoid disappointment.

Who Should Attend?

The workshop is aimed at practitioners in the public and private sector who work with land affected by contamination.


Registration will be 9.30am with teas and coffee on arrival.  The workshop will start at 10am and finish at 4pm with a buffet lunch and drinks provided.


You can pay directly for a workshop on CL:AIRE’s website here>>>

Alternatively if you cannot book on line you can call 0207 299 4250 or email: This email address is being protected from spambots. You need JavaScript enabled to view it. for further information.

SuRF International

The latest SuRF international and partners minutes from the meeting held on 10th June 2014 have now been uploaded onto the dedicated web page and can be accessed here>>>


Asbestos in Soil Progress Report

An update of the work of the Asbestos in Soils Joint Industry Working Group (JIWG) can be found here>>>


Government initiatives to help build more new homes on brownfield land

Thousands of new homes will be built on unused and previously-developed land under the government’s plans to make it easier to build on brownfield sites suitable for housing.

Ministers are clear of the need to make the best possible use of brownfield land in a way that keeps strong safeguards in place that protect our valued countryside.

Councils will play a critical role in bringing forward brownfield land and will be asked to put in place local development orders which can provide sites with outline planning permission to speed up the building of new homes.

To view the full article please click here>>>

Environment Agency Website

You are probably aware by now of the closure of the Environment Agency’s old web site and the move to .GOV.UK. This is an ongoing process and as part of the migration detailed reviews are being undertaken by Defra. In the interim you are still able to access guidance that was held on the old site. A Land Contamination Technical Guidance page has been published on .GOV.UK.

This page features many of the more popular Environment Agency land contamination documents, though others are on GOV.UK and the old archived site (a link to which is also provided on the page).

Mercury Research Project Complete

CL:AIRE would like to provide you with the final reports and documents from the SNOWMAN-funded IMaHg project. They are available to download from the SNOWMAN website: finalized projects Call 3. IMaHg was focused on enhancing knowledge in mercury fate and transport for improved management of mercury contamination. SNOWMAN is the European network for Sustainable Management of Soil and Groundwater (


Site Search for CL:AIRE RP25 Project

The Cleaning Land for Wealth (CL4W) project (approved as CL:AIRE RP25) is seeking suitable sites that have high concentrations of nickel, arsenic and Platinum Group Metals (PGMs) in soil where samples can be collected for lab trials. The site should have suitable ground conditions (no obstructions, no stiff clays, range of soils welcome) and contamination levels for nickel and arsenic ideally (but not necessarily) will be in the range of 100-5000 mg/kg, and for PGM ideally high but any level will be considered. Sites proposed should be in the UK and available for access from now until November 2015.

If you have a suitable site please email This email address is being protected from spambots. You need JavaScript enabled to view it. .

Cleaning Land for Wealth (CL4W) is an EPSRC funded collaborative project joining 5 leading UK Universities. The project examines the potential to recover valuable metals and energy from plants used for phytoremediation when cleaning land contaminated with elemental contaminants, in particularly nickel, arsenic and PGMs.  For further information click here>>>


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ALUN Griffiths (Contractors) Ltd




BAE Systems Properties Ltd
BAM Nuttall
Beech Consultants
Bone Environmental Consultant
Caerphilly County Borough Council
Cavendish Nuclear
CH2M Hill
Cranfield University
CRB Environmental Ltd
Crossfield Consulting Ltd
Deep Soil Mixing Ltd
DWL Environmental Ltd
The Environmental Protection Group Ltd (EPG)
Environmental Scientifics Group
EnviroSurveying Ltd
Firth Consultants Ltd
Foot Anstey LLP
Geo2 Remediation Ltd
Geo-Environmental Services
Ground-Gas Solutions Ltd
Hazardous Waste Management
HBR Limited
H Fraser Consulting Ltd
The Hub
Kalex Limited
LBH WEMBLEY Geotechnical & Environmental 
Listers Geotechnical Consultants Ltd
Lithos Consulting
McAuliffe Civil Engineering
MDK Environmental Ltd
Mott MacDonald Ltd
Opus International Consultants Ltd
Parsons Brinckerhoff
Paulex Environmental 
Pegasis UK
Peroxychem Environmental Solutions
Peter Brett Associates
r3 environmental technology ltd
RAW Group
Residential & Civil Construction Alliance of Ontario (RCCAO)
Rodgers Leask
Rolton Group
Roundhay Environmental Consulting Limited
RSK Group
Rural Arisings
SEnSe Associates
Soilutions Ltd
Southern Testing
Stephenson Harwood
The Sirius Group
Tamdown Group Ltd
T & P Regeneration Ltd
Universite de Liege
University of Birmingham
University of Sheffield
University of York
URS Infrastructure & Environment
VHE Construction Plc
Wardell Armstrong
Ward Homes
Waterman Energy, Environment & Design Ltd
WSP Group

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