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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.

Welcome to CL:AIRE's 'Register of Evidence', designed for capturing industries use, or intended use, of the Definition of Waste: Development Industry Code of Practice (CoP). Summarised updates of aggregated data from the Register will be periodically fed back to industry. The information volunteered here will only be used by CL:AIRE and its project steering group, with a view to:

A) increasing the scope of the CoP ; and
B) aid in identifying improvements in the processes and procedures within the Code of Practice and for its general promotion.

It is important that we receive this feedback on use as it strengthens the case for the Code so please fill in the appropriate form for your project and encourage others to do likewise and thank you for your time.

Links for the surveys –

URN Name Job Title Organisation Name Location Telephone Number Email Address
QP001 Ged Duckworth   Ged Duckworth Ltd West Sussex 07733 363 136
QP048 James Potter Technical Specialist Parsons Brinckerhoff Surrey 07800 667 957
QP065 Maxine Alton Waste Manager South East Electricity Substation Alliance (SEESA) Buckinghamshire 07867 501 175
QP136 Richard Stockwell Associate Director Waterman Energy Environment and Design Ltd Bristol 0117 937 8200
QP159 Jamie Bardot Principal Environmental Advisor Mogan Sindall PLC Preston 07837 034 717


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.

CL:AIRE is keeping a register of materials and services which may fall within the Definition of Waste Code of Practice (DoWCoP). We aim to link material holders with service providers or organisations requiring materials in order to make the process of finding project partners an easier and quicker process.

Organisations involved in the management of development sites are urged to register key information on materials and services which fall within the DoWCoP which will be held confidentially by CL:AIRE.  For example - which sites are being or are due to be remediated/developed?  What treatment options are in use or available in an area of the country? Where are there site imbalances of soils or fill materials?

CL:AIRE will review the information provided against the Register and contact organisations where we see possible project partnerships for 'finding homes' for materials.  The information submitted to the Register will be circulated amongst all members on a regular basis; should an entry be of particular interest to a member they should notify CL:AIRE who will act to make the necessary introductions such that further discussions and information transfer can take place. 

CL:AIRE's independence in the market and its familiarity with the DoWCoP positions it perfectly to act as a trusted administrator of such an initiative.

What Information is Required?

Nothing above and beyond what will already exist - site details, information surrounding the materials for example analysis data, information on treatment capabilities or reuse criteria. CL:AIRE will only circulate information which members are willing to distribute; CL:AIRE will not amend any submissions, the information contained on the register remains the responsibility of the submitting organisation for its accuracy.

To add an entry to the Register simply email - Mark the Subject line as either ROM Donor / ROM Receiver / ROM STF depending on the nature of the site you would like to add. Then in the email body provide the following details -

Donor Site Example

Location - Middlesex

Quantity - 20,000m3

Availability From / To - Nov 2013

Material Type - Soils & stones

Chemical Analysis Available? - Available on request


Receiver Site Example

Location - Chippenham

Quantity needed - 40,000 m3

Availability From / To -Late 2011/Early 2012

Material Type - Clay


Specified End Use - Clean materials for an engineering fill

Soil Treatment Facility Example

Location - Derby

Yearly Intake - 100,000 m3

Timescale - Immediate

Treatable Material/ContaminantsNotes - Excavated fill / VOCs, PAHs

For clarification, sections 1.10 and 1.11 of the Code of Practice outline clearly which materials are covered by the CoP and which are not. It is the responsibility of the users of the Register to make the decision on whether the CoP applies; CL:AIRE only act to support the linking of possible project partners. Inclusion of materials on the register is not an indication that they are suitable for reuse following the CoP.  For information on the CoP pleaseclick here>>

How Much Does it Cost?

To submit details to the register costs nothing. CL:AIRE as a charity and NGO relies heavily on various organisations for funding and support amongst its many projects and initiatives. We strongly encourage all users of the Register to consider CL:AIRE Membership; money raised from the scheme covers the cost of running the Register. Should CL:AIRE be successful in assisting in developing project partnerships we would request a discussion with project partners upon successful completion to agree a possible financial donation appropriate to the benefits gained by the project.

Who Should Use the Register?

  • Anyone involved in the management of development sites for example site owners, consultants or contractors.
  • Soil Treatment Providers who wish to link their facilities using the Cluster approach.
  • Large development site owners with on site treatment facilities which could form the Hub of the Cluster network.

How Long Will it Take to Find Partnerships?

As CL:AIRE cannot guarantee that sites or materials will be available at any one time or location, an answer cannot be given. The more organisations linking with the scheme however will increase the likelihood of finding possible partnerships as such we encourage as many individuals and organisations to join the scheme as possible.

Who Do We Contact?

If you are interested in any of the sites, please contact Nicholas Willenbrock on 0207 299 4250 or email









Ref #Date of SubmissionLocationQuantityAvailability From - ToMaterial TypeChemical Analysis Available?
D051 Sept 2014 Oxford >100,000m3 From January 2015 to December 2015 Oxford clay Available on request
D050 July 2014 Mill Hill, North London 25,000m3 Immediately Reworked London Clay Available on request
D049 June 2014 South Coventry 300,000m3 January 2015 Clay and Mercia Mudstone Available on request
D048 May 2014 Harlow 200m3 Immediate Sub Soil and Rocks Available on request
D047 April 2014 Bridgend 10,000m3 Immediate Silty/Sandy Dredged Material Available on request
D046 April 2014 Swansea 2,000m3 April 2014 Clean/inert Glacial Till Soils Available on request
D045 April 2014 Swansea 10,000m3 April 2014 Clean General and Engineering Fill Available on request
D044 March 2014 Sandwell, West Midlands 830m3 Late April 2014 Gravelly sand (slightly silty) Available on request
D043 Feb 2014 Sheffield 20,000m3 Immediate Clayey soils - greenfield site Available on request
D042 Dec 2013 Wandsworth 8,000m3 April/May 2014 Alluvium and River Terrace Gravels Available on request
D041 Nov 2013 Cambridge 400m3 March April 2014 Virgin topsoil, slightly silty clay characteristics Available on request
D040 Sept 2013 Lambeth 2,000m3 Oct 2013 Soils & stones Available on request
D039 June 2013 Rochdale 8,000m3 July 2013 Clayey made ground Available on request
D038 04/06/2011 High Wycombe Between 1,000 & 250,000m3 April 2011 onwards Clean chalk fill Full chemical and geotechnical analysis can be made available on request
D037 05/03/2011 Fulham 90,000 m3 2013-2021. Approximately 10,000 m3 per year 50-75% material is granular made ground, 25-50% are gravels Majority is non-hazardous although does have some coal tars. Full analysis on request
D034 07/11/2011 Holmer, Hereford 8,000 m3 Immediate - July 2013 As dug topsoil Available on request
D029 15/03/2012 Northamptonshire 175,000 m3 July 2013 onwards High-quality, cohesive virgin clay Permeability testing and full analysis on request
D028 19/03/2012 Chatham 20,000t Immediate Inert soils processed into aggregates including hydraulically bound materials -
D027 19/03/2012 Woolwich, South London 100,000 t Apr-12 Sand -
D026 22/03/2012 North Nottinghamshire >50,000 m3 Oct-12 Greenfield Topsoil Available on request
D021 24/07/2012 Canalside in England 35,000 t Yearly Wet sediment dredgings -
D024 27/07/2012 Tankersley 1480 m3 Sept-12 Topsoil/organic material Available on request
D023 27/07/2012 Tankersley 2000 m3 Sept-12 Brown slightly gravely silty clay. Firm to very stiff orange/brown/grey clay Available on request
D020 01/08/2012 Bridgend 8000 m3 Immediately Clean tested subsoil -
D019 24/08/2012 West/Central London 40,000 m3 Now, for 1 year London Clay (Brown and Blue) Available on request
D017 16/10/2012 South Cambridge 10,000 m3 Immediate Naturally occurring topsoil -
D011 29/10/2012 Colchester 100,000 m3 Immediate London Blue clay -
D010 12/01/2013 South West London 100,000 m3 January 2014 - May 2014 Mostly Made Ground, some River Terrace Gravel Available on request
D009 18/01/2013 Wilmslow 1,000 m3 Immediately Clean sandy clay Available on request
D008 01/03/2013 West Hendon 15,000 m3 January to December 2013 Subsoil class 2C Available on request
D007 18/03/2013 Manchester 150,000 m3 Late 2013 Granular subsoil and made ground Available on request
D006 03/04/2013 Ashford 55,000 m3 Oct-13 Non-haz soils Available on request
D005 10/05/2013 Saffron Waldon 4,000 m3 Immediate Gravelly clay Available on request
D004 30/05/2013 Canning Town 12,000 t Immediate Inert Available on request
D003 31/05/2013 Solihull 1,000 m3 Immediate Excated fill Remediated - analysis
D001 11/06/2013 Mill Hill 35,000 m3 Jul-13 Clean London clay Available on request







Ref #Date of SubmissionLocationQuantity neededAvailability From - ToMaterial TypeSpecified End Use
R038 August 2014 Macclesfield 20,000 m3 August 2014 - October 2014 “as dug” soils excluding topsoil Clean materials for an engineering fill
R037 June 2014 Whitehaven 60,000 m3 Early 2014/Late 2015 Clay/Soils & Stones Profiling for biomass plantation
R036 June 2014 Thornton-Cleveleys 40,000 m3 Early 2014/Late 2015 Clay/Soils & Stones Landfill restoration/public park creation
R034 Mar 2014 London E4 35,000 m3 late 2014 To early 2015 Clay / soil & stones Clean materials for engineering fill
R033 Mar 2014 Slough 50,000 m3 late 2014 To early 2015 Clay / soil & stones Clean materials for engineering fill
R032 Mar 2014 Llanwern, Newport 400,000 t Now/2018 (large donors only) Soils Soils for landfill restoration
R031 Mar 2014 Pickering, Yorkshire 35,500t Immediate Clay (Class 2A,2B or 2C) Flood embankment
R030 Dec 2013 Hull 11,500m3 Early 2014 Soils & stones Clean materials for an engineering fill
R028 Nov 2013 Aylesford, Kent 17000m3 06/01/2014 to 02/05/14 Class 1C General Fill -
R027 Sept 2013 Reading area 3000T of recycled General Fill class 1A Oct 2013 SHW in accordance with extract page 31 attached. Compliance certification would be required. -
R026 12/09/2013 Summerslade, BA12 7EL 5000 m3 Apr 2015 clean bulk non-structural fill Site bund
R025 12/09/2013 Sturminster, BH21 4AJ 10000 m3 Apr 2015 clean bulk non-structural fill Site bund
R024 12/09/2013 Little Down, Blandford Forum 8000 m3 Jul 2016 clean bulk non-structural fill Site bund
R023 12/09/2013 Camphill, SP3 4UF 4000 m3 Jul 2016 clean bulk non-structural fill Site bund
D022 12/09/2013 Codford, BA12 0JX 5000 m3 Apr 2015 clean bulk non-structural fill Site bund
R021 21/08/2013 Cheshire 3000m3 + 1000m3 (topsoil) Immediate / topsoil October 6F2 (100%) or 50% other approved granular fill (sand/gravel), topsoil -
R020 11/06/2013 East Cheshire 1,000 m3 Jul-13 Granular Fill -
R019 11/06/2013 East Cheshire 4,000 m3 Jul-13 Granular Fill -
R018 13/06/2013 Selby, North Yorkshire 40,000 m3 Summer 2013 Clean, cohesive or granular soils Residential
R017 21/06/2013 West Sussex 6,800 t Summer 2013 Clay Fill Residential
R016 03/07/2013 Luton 700,000 t Immediate Concrete, brick, excavated soils -
R015 23/03/2011 Oxfordshire 1,000 t - Inert fill/sub soil -
R014 23/03/2011 Essex 40,000 m3 - Inert fill -
R013 23/06/2011 Chesterfield 160,000 m3 - Quality subsoil >5% Organic Matter and 2 mm diameter) Woodland areas/meadow grassland
R012 08/02/2011 Queenborough 200,000 m3 Sept 2012 - Sept 2013 Inert soils (clays, sand and chalk) Engineering purposes
R011 08/02/2011 Northampton 90,000 m3 Open - Sept 2013 Inert soils Engineering purposes
R009 08/02/2011 Leicester/Northamptonshire 220,000 m3 Jan 2012 - Sept 2013 Restoration soils including made ground -
R007 15/03/2012 Dartford, Kent 2,995,500 m3 April 2012 - May 2022 Inert fill/sub-soils/hard-core Creating an engineered platform for the development of 1200 houses
R006 16/03/2012 Fareham 2,000 m3 - Require uncontaminated, preferably clayey rather than granular soil -
R005 16/07/2012 Birchington 300,000 m3 Immediate Inert soils Construction of golf course
R003 01/08/2012 Llanelli 200,000 m3 Immediate Inert fill For engineering fill
R002 07/09/2012 Sandwich, Kent 25000 m3 Required 2013 Clay Fill Embankment Construction
R001 17/10/2012 Lewes 14,00 m3 11/12/2013 Clean, unimpacted soils General fill



Annual capacity split between soil washing, bioremediation and stabilisation

Ref #Date of SubmissionLocationYearly IntakeTimescaleTreatable Material/ContaminantsNotes
F008 Aug 2014 Cornwall 300,000t Immediate “Hazardous / Non Hazardous soils and dredging spoil Treatment of a broad range of contaminants including hydrocarbons (petrol, diesel, oils, etc.), heavy metals, asbestos and soils contaminated with invasive plant species. Treatment can achieve 100% reuse thereby avoiding landfill disposal costs.
F007 Sept 2013 Swansea 40,000 to 80,000 t Immediate Hazardous and Non-Hazardous soils. Materials described under EWC Codes 11, 17 (including 17 05 03) and 19. Heavy metals.Hydrocarbons – BTEX and fuel to oil range organics. Chlorinated solvents – VOCs and SVOCs. Polyaromatic Hydrocarbons (PAHs). A 30% to 70% saving on the cost of landfill disposal, depending on the nature of the soils and contamination profile. Removal of the landfill tax charge of £72 per tonne (as at April 2013). Significant reduction in haulage costs to hazardous landfills from Wales and the west. Improved sustainability and regeneration through enabling of previous difficult development prospects. Suitability for large volumes from various sources with active weighbridge and security. Inclusive research and development for difficult soils, projects and geo-environments. Industry leading QEHS procedures and standards.
F006 13/06/2013 Peterborough 450,000 t Immediate Hazardous/Non-Hazardous soils and dredging waste Annual capacity split between soil washing, bioremediation and stabilisation
F005 02/11/2011 South East - M3/M25 Soil Treatment Centre Up to 50,000 m3 Immediate Contaminants Capable of Treatment - VOC’s, SVOC’s, PAH’s, Bituminous Compound (Tar’s etc), Heavy Metals, TPH’s, TBT’s and other contaminants. -
F004 15/11/2011 East Midlands 75'000 t Immediate Variable Waste Streams TPHs, PAHs, PCBs
F003 15/03/2012 Southampton 600,000 m3 Immediate Inert and Non-Hazardous material Price per 9m3 load dependant on soil analysis but always highly competitive, cheaper than landfill and discounted rates on larger projects
F002 31/05/2013 Middlesbrough 450,000 t Immediate Hazardous/Non-Hazardous soils and dredging waste Annual capacity split between soil washing, bioremediation and stabilisation
F001 31/05/2013 Solihull 2,000 m3 Immediate Hazardous waste with hydrocarbons Current MTL but looking to increase limits

Definition of Waste: Development Industry Code of Practice

DoWCoP Version 3 sponsorship opportunity>>>

Download Definition of Waste: Development Industry Code of Practice - Main Document>>>

Download Guidance Bulletin (GB3) - Definition of Waste: Development Industry Code of Practice>>>

Terms & Conditions >>> (For use after 1st Oct 2014)

The Definition of Waste: Development Industry Code of Practice (DoWCoP) is an initiative to improve the sustainable and cost effective development of land. The DoWCoP provides a clear, consistent and streamlined process which enables the legitimate reuse of excavated materials on-site or their movement between sites with a significantly reduced regulatory burden. In many instances the DoWCoP can provide an alternative to Environmental Permits or Waste Exemptions when seeking to reuse excavated materials.

The DoWCoP enables the direct transfer and reuse of clean naturally occurring soil materials between sites. It creates the conditions to support the establishment and operation of fixed soil treatment facilities, which have a key role to play in the future of sustainable materials management. It allows the reuse of both contaminated and uncontaminated materials on the site of production and between sites within defined Cluster projects.

A full version of the updated DoWCoP is available for download above.

Success to Date

The original Definition of Waste: Development Industry Code of Practice (Version 1) was released in September 2008 and covered the reuse of materials on site and as part of a defined Cluster Projects. This allowed significant cost and environmental benefits to be realised; the DoWCoP has been applied on more than 450 projects ranging from landmark developments through land remediation schemes to more routine infrastructure and utility works.

The DoWCoP has allowed the Environment Agency to step back from the detailed auditing and quality assurance of many earthworks projects which pose little or no risk to the environment. An appropriate degree of scrutiny is still applied to higher risk schemes, but the public resources saved by this initiative allow the Agency to focus on more damaging illegal activities. In establishing a role for a “Qualified Person” the Environment Agency has enabled the private sector step up and take responsibility for implementing good practice and promoting sustainable materials management.

Requirements for Qualified Persons

The role of Qualified Persons in ensuring that best practice is consistently and demonstrably applied is key to the success of the DoWCoP. It is essential that all Qualified Persons update and maintain their knowledge of waste and contaminated land management.

Register of Environmental Benefits

The success of the DoWCoP to date and it future use and development relies on a strong portfolio of successful projects. Improvement of the DoWCoP can only be achieved on the basis of practitioner’s experiences. It therefore remains vital for the industry to provide feedback on their experiences and the benefits in using the DoWCoP. Consequently we continue to provide online pro-formas to collate this information to act as the Register of Environmental Benefits; this will also allow
CL:AIRE to feedback aggregated data back to the industry.

To this end, following use of the DoWCoP we would be grateful if you could complete the relevant of the pro-formas.

  • Site of Origin Use Register of Environmental Benefits
  • CLUSTER Site Use Register of Environmental Benefits
  • Direct Transfer Use Register of Environmental Benefits

Register of Materials

CL:AIRE is keeping a register of materials and services which fall within the DoWCoP. We aim to link material holders with service providers or organisations requiring materials in order to make the process of finding project partners more efficient.

Organisations involved in the management of development sites are urged to register key information on materials and services which fall with the DoWCoP to be held confidentially by CL:AIRE. For example - which sites are being or are due to be remediated/developed? What treatment options are in use or available in an area of the country? Where there are site imbalances of soils or fill materials? CL:AIRE will review the information provided against the register and contact organisations where we see possible project partnerships. The register is not publicly available; CL:AIRE will act to make the introductions and offer any further services as required in order to ensure successful partnerships are achieved.

CL:AIRE's independence in the market and familiarity with the DoWCoP means it is well positioned to act as a trusted administrator of such an initiative. More information is available at

For any technical queries relating to the Definition of Waste: Code of Practice please contact Nicholas Willenbrock at

1. The DoWCoP can provide an alternative to the use of an Environmental Permit or Waste Exemption in certain circumstances. Increase in the use of the DoWCoP is already being seen since the effective removal of widely used waste exemptions (e.g. para 9 and 19) in April 2010. This trend is expected to continue as Developers face decisions as to whether or not they require an Environmental Permit to cover the reuse of excavated materials.

2. The Steering Group is made up of site owners, industry groups, regulators, consultants and contractors facilitated by CL:AIRE. The members are:

  • Clive Boyle (Chair) - Environmental Industries Commission
  • Phil Crowcroft - Environmental Industries Commission
  • Nicholas Willenbrock - CL:AIRE
  • Matthew Whitehead - Environment Agency
  • Jonathan Atkinson - Environment Agency
  • Ged Duckworth (Lead Author) - GD Environmental
  • Richard Boyle - Homes and Community Agency
  • Peter Witherington - Home Builders Federation
  • Lisa Hathway - National House Building Council
  • Frank Evans - Soil & Groundwater Technology Association
  • Doug Laidler - Soil & Groundwater Technology Association
  • Mike Higgins and Roger Dunn - representing fixed Soil Treatment Facility operators
  • Charlie Law - UK Contractors Group (UKCG)
  • Peter Johnson - UK Contractors Group (UKCG)
  • James Parr - UK Contractors Group (UKCG)
  • Steve Livingston - The Civil Engineering Contractors Association (CECA)

3. CL:AIRE has trained over 600 individuals through it’s DoWCoP course.

4. Financial sponsorship for this version has been received from the Homes & Communities Agency (HCA), DEC UK Ltd, and Hydrock.


In 2011 we launched our Definition of Waste: Development Industry Code of Practice (DoWCoP) version 2. This featured a significant extension to the scope of scenarios which could benefit from this approach to reusing excavated materials. Since April 2012 over 259 projects have diverted approximately 5,242,128m3 tonnes of excavated material from landfill. This equates to an average of over 20,000m3 per project.

In order to maintain and improve this successful initiative, a new sponsorship opportunity has arisen for the creation of version 3 of the code. With the support from the Environment Agency and the DoWCoP steering group, CL:AIRE will lead the development for this new version. This will be a further significant development of the use and recognition of a best practice framework in ensuring quality products come to the marketplace and waste disposal to landfill is substantially reduced. There has been interest in the DoWCoP framework for soils re-use internationally, so sponsors will get wide coverage as CL:AIRE promotes the finalised version 3 with all its contacts. The aim of the project is to draft documents and undertake the relevant negotiations with the regulators and industry to introduce the  potential extensions and improvements as outlined below.

  • A more streamlined procedure for small quantities of material arising from recovery of soils type materials at permitted facilities (e.g. 1000m3 - 5000m3);
  • An expansion of the scope of the Direct Transfer scenario to include excavated materials that are not clean or naturally occurring (with appropriate limitations);
  • Allow for the reuse of manufactured soils e.g. with the addition of PAS 100 compost, under the DoWCoP if to be blended at site of production, i.e. permitted site already covered for this process under permitted treatment to create soils type products;
  • Qualified Person involvement with particularly large receiver sites e.g. soil treatment facilities on former landfills e.g. threshold approach - declaration following the treatment of an agreed volume;
  • Review the role of the Qualified Person relating to Verification Reports (to provide greater confidence that best practice has actually been followed in reusing the excavated material);
  • Detail the minimum information requirements e.g. Desk Top Study information (particularly for Direct Transfer of clean naturally occurring soils where speed of production is key), tracking system, delivery ticket.
  • Provide greater context of where the DoWCoP fits with other documents / guidance e.g. schematic showing WRAP Quality Protocol / recent Defra guidance on Definition of Waste on “by products”, exemptions and Standard Rules Environmental Permits. Highlight other mechanisms for reuse other than in accordance with the DoWCoP;
  • Provide background and further explanation to Watch-point 15;
  • Expand on the definition of clean;
  • Explain how topsoil is sold as a non-waste; and
  • Storage of excavated material at a source site or alternative facility with no identified certainty of use e.g. good quality material for which a beneficial use would be reasonably expected to be found (including suitable timeframes).

CL:AIRE expects the development work for the above to be carried out throughout 2013. In order to begin this process sponsorship for this work is required upfront. CL:AIRE no longer receives Government funding, as such, project funds must be raised in advance of work commencing.

If your organisation is looking to link to and gain brand coverage with a successful, widely used initiative we hope this offer is of interest. Perhaps your organisation has benefited from using the DoWCoP and you’d like to support its ongoing administration and development. CL:AIRE is not able to support the ongoing maintenance and development of this initiative without the support of the industry. If the DoWCoP is valuable to your organisation please take the time to consider this opportunity.

The Offer -

All previous versions of the DoWCoP have carried branding of organisations who have provided financial assistance. This version will be no different, except that CL:AIRE intends to make supporters logos even more prominent.

Version 2 of the document has been downloaded from the CL:AIRE website nearly 7,000 times since its launch. A further print run of 1,000 copies have also been circulated. There are a number of supporting documents associated with the DoWCoP such as Guidance Bulletin 3 which has been download 1,000 times in the last year. Finally, sponsor logos are also given coverage on all DoWCoP training materials. Since the launch of version 2, CL:AIRE has trained over 300 professionals from the industry.

For this new version of the DoWCoP CL:AIRE requires a minimum of £50,000 sponsorship. This will allow the necessary work to be carried out writing the new version but will also contribute to the ongoing cost of administering the initiative.  To achieve this amount CL:AIRE proposes 5 branding berths be made available with exclusivity provided to organisations from different sectors e.g.

  • x1 berth available for a consultant
  • x1 berth available for a remediation contractor
  • x1 berth available for a house builder
  • x1 berth available for a civils contractor
  • x1 berth available for a government / industry leading organisation or department.

The above suggestions are not fixed, other companies from other sectors may wish to sponsor; this is to illustrate how exclusivity of the branding opportunity will be maintained.

Each berth will be available for a total of £10,000 +VAT. In return for this amount, sponsoring organisations will receive.

  • Their logo’s prominently and located centrally on the front outer cover of the final PDF document;
  • Acknowledgment inside PDF document and a one page A4 advert or comment section within the final version of the document;
  • Logo branding on supporting literature e.g. new guidance bulletin 3;
  • Logo on PDF programme promoting the one day training course;
  • Logo in the PowerPoint presentation delivered to delegates on the one day training course (planned: 9 courses per year, ~ 15 delegates per course);
  • Logo with URL to sponsoring organisation’s website on related pages on CL:AIRE website (approx 4 pages + event calendar pages promoting the DoWCoP training course);
  • A PDF personalised certificate of sponsorship; and
  • Trade press publicity from CL:AIRE press releases announcing the launch of DoWCoP version 3.

Sponsorship berths will be allocated on a first-come-first-served basis; if this is of interest to your organisation we encourage you to register an expression of interest promptly with

CL:AIRE plans to run a DoWCoP related conference in 2013 which as well as providing information on the initiative and its use, will aim to raise further funds. Sponsorship opportunities will be made available relating to this event. Other large, one-off guidance documents might be developed throughout the lifetime of DoWCoP version 3. This agreement would not cover such ancillary documents. Sponsoring organisations will be kept appraised of developments relating to the initiative.

Below is a mock-up of the potential front cover of DoWCoP version 3 to give an indication of the level of coverage expected.


The Definition of Waste: Development Industry Code of Practice. Becoming a Qualified Person - Training and experience requirements

Download Qualified Person Project Declaration>>>

To become a New Qualified Person please complete the registration form here>>>

To renew your Qualified Person Subscription please complete the form here>>>

To pay for your subscription online please click here>>>

CL:AIRE continues to offer its one-day training course for the Definition of Waste: Development Industry Code of Practice (DoWCoP). This course is mandatory for all new Qualified Person applicants and is also particularly useful for those wishing to implement the use of the DoWCoP. It also useful for those wishing to update their knowledge or individuals wanting a better understanding of the DoWCoP.

The scheduled dates and locations for this course will be confirmed shortly.

Requirements for becoming a Qualified Person

Corporate Authority
The applicant must be authorised to sign on behalf of their company in this area of activity.

Professional Standing
The applicant must have chartered status, awarded by and recognised with a body that sets restrictions on areas of activity and has the capacity to apply sanctions in the event of unprofessional conduct.

Relevant Qualifications
It is expected that the applicant will have academic qualifications relevant to the area of activity.

The application must have a minimum of 5 years experience and be currently engaged in the planning or oversight of remediation projects, or projects involving site materials management. Evidence of this experience is to be provided by means of a detailed CV with references.

The Qualified Person should not be directly involved in the management or execution of the project.

The applicant must have attended a recognised minimum one-day Definition of Waste: Development Industry Code of Practice training course. Evidence of attendance will be provided by an Attendance Certificate.

Not barred from acting
The applicant must not have any individual convictions under waste or environmental legislation, or be barred from acting in the capacity as a result of previous activities in the role of the Qualified Person.

Registered with CL:AIRE
All Qualified Persons are required to register with CL:AIRE on an annual basis. An annual fee of £150 is required in order to maintain the public register and support the ongoing administration of the DoWCoP. Renewals are carried out at the start of each calendar year. Individuals who register later in the year will pay pro rata up to the year end.



In association with:



Materials Management Plan (MMP)

Download Materials Management Plan (MMP) Form>>>

Download Materials Management Plan (MMP) Form Oct 2014>>> (For use after 1 Oct 2014)

This form should be completed once the lines of evidence have been marshalled in relation to suitability for use, certainty of use and quantity required. The answers to the questions posed within this form together with the supporting information will constitute the Materials Management Plan and must be provided to the Qualified Person.

Cluster Guide

Download Cluster Guide 2012>>>

The Cluster approach is designed to facilitate the remediation and / or development of a number of sites that are located in relative close proximity and share a decontamination / treatment facility located on a single site – the Hub site.

Cluster projects have three guiding principles in that they are:

  • Temporary – operate only as long as the sites defined within the Cluster are being remediated / developed.
  • Local – demonstrably appropriate in terms of geographical distance, relative savings, practical issues etc. for each of the participating sites.
  • A more sustainable way of developing land.

The Cluster concept has been proven at the commercial and full-scale and subsequently at a number of sites since the Definition of Waste: Development Industry Code of Practice (DoWCoP) was launched in September 2008. The lessons learnt from those projects have been used to develop this guide which will aid others in identifying the various benefits, challenges and solutions in establishing a Cluster and how to make it work effectively.

The guide introduces the terms “Hub site”, “Donor site” and “Receiver site” as a way of identifying and distinguishing whether sites in a Cluster are acting, respectively, as the treatment Hub, donating wastes or materials to be treated / reused or receiving treated materials for use within a development. Sites can act as both Donor and Receiver sites.

This guide sets out the various indicative roles and responsibilities of people and organisations within a functioning Cluster. The inter-relationships of different parties and the documentation that has to be produced are illustrated by comparing the documentation associated with a Cluster project and a standalone remediation project, which is not dissimilar.

Stakeholders may benefit from Cluster in different ways as discussed within this document. The main benefiting parties could include:

  • Landowners
  • Developers
  • Contractors
  • Consultants
  • Local authorities
  • Local communities

This guide also identifies the issues associated with the conceptualisation of a project and the considerations that will influence the choice of remediation technology located at the Hub site.

Town and Country Planning issues have been reviewed and different scenarios are illustrated. The need for flexibility in relation to relative timing of import, export and phasing of operations has been highlighted. This is seen as being a particularly important factor if the true sustainable benefits of operating Clusters are to be realised.

Cluster represents a significant step forward in terms of options for managing land contamination and developments. The concept is explicitly covered in “The Definition of Waste: Development Industry Code of Practice (CL:AIRE Version 2 March 2011)” which is freely available at and is referred to as the “CoP” within this document. The DoWCoP provides a mechanism to identify that excavated and treated materials have ceased to be waste and hence can be used at Receiver sites within a Cluster without the need for an Environmental Permit or waste exemption.

The different contractual arrangements that may have to be entered into, dependent on the Cluster make-up are identified and explained, as well as insurance products that are currently available in the market place.

The lessons learnt from previous projects illustrate that whilst all of the pre-operational matters can be largely addressed by good preparation and planning, the true potential of Cluster will rely on all stakeholders recognising the importance of flexibility, particularly in relation to timeframes. Appropriate risk-based decision making will also be critical to unlocking the true potential of the Cluster concept.


Code of Practice FAQs

These FAQs have been developed to aid those using the Definition of Waste Code of Practice (DoWCoP) and may be subject to change periodically. Therefore, reference to the most up to date version on CL:AIRE’s website is recommended.

Latest update and summary of changes:

1. The current version of the DoWCoP was launched on 30th March 2011. It features an extended scope of scenarios which can now be applied -

‘This document applies to both uncontaminated and contaminated material from anthropogenic and natural sources excavated

  • For use on the site from which it has been excavated, either without treatment or after on-site treatment as part of the development of that land (i.e. Site of Origin scenario)
  • For use directly without treatment at another development site subject to the material meeting the requirements set out in Appendix 2 (i.e. Direct Transfer scenario)
  • For the use in the development of land other than the site from which the material has been excavated, following treatment at an authorised Hub site including a fixed Soil Treatment Facility acting in this capacity (i.e. Cluster Project scenario)
  • Or combination thereof’

2. A template Materials Management Plan has been prepared for use on all DoWCoP projects. The template is available from the CL:AIRE website –

General Questions

(Q1) Which team in the Environment Agency will carry out the Audits?
Audits will be arranged by the relevant National Environment Agency team and carried out with assistance of local Area staff. Staff carrying out audits will be fully conversant with relevant waste legislation and the content and aims of the DoWCoP. For consistency purposes any queries on interpretation including issues such as bulking and consolidation will be resolved in consultation with the National team.

(Q2) How long after submission of a Declaration might the Environment Agency carry out an audit?
Concern was expressed that if undertaken 5 years after completion and some problem is found, then there may be houses on what might be classified as a waste site.A: Most audits will be undertaken within 6 months of the submission of a Declaration. However audits can be triggered at a later date if complaints are received about a site or a pollution incident is subsequently reported. A risk based decision will be taken as to whether to retrospectively enforce the requirements for an environmental
permit if problems are found at any site.

(Q3) Can the DoWCoP be applied to fixed Soil Treatment Facilities?
Yes. The Soil Treatment Facility can either act as part of a pre-defined Cluster project or approach the Environment Agency again to gain approval for further transfer of stockpiled, treated materials, via the establishment of new Cluster projects. The simplest form of project is likely to be the most appropriate for such operations i.e. a 2 site Cluster with the Soil Treatment Facility acting in the capacity of a Donor/Hub site. See section A3.3 Fixed Soil Treatment Facilities of the Version 2 of the DoWCoP.

(Q4) Could the DoWCoP be used to bring material such as Pulverised Fuel Ash (PFA) on to a site, for example a former mine.
Potentially: The Pulverised Fuel Ash would have to constitute madeground and be excavated and re-used as earthworks materials as part of a defined Hub and Cluster development. However the filling of mineral voids is commonly regarded by the Environment Agency as a landfilling activity which would rule out the use of the DoWCoP.

(Q5) What about the case where impact to groundwater remains after human health issues are dealt with, but Environment Agency takes the view that it is unreasonable to require further work (e.g. aquifer already compromised). Would the material strictly not be suitable for use?
Suitability is determined on a site by site basis with reference to the achievement of agreed risk based targets which take into account the environmental setting of the site.

Q6) Why does the methodology behind the assessment of “suitability” differ when considering the three scenarios of onsite use, direct transfer and hub & cluster within the DoWCoP? Why isn’t suitability defined by a simple risk assessment at the site of use?
Article 14 of the Waste Framework Directive requires the necessary measures to be taken to ensure that waste is recovered or disposed of without endangering human health and without using processes or methods which could harm the environment, and in particular:
a) without risk to water, air or soil, or to plants or animals;
b) without causing a nuisance through noise or odours;
c) without adversely affecting the countryside or places of special interest.

In assessing the suitability of materials (and hence waste status) one has to consider not only the circumstances in which they arise but also the circumstances in which they are to be used. When considering “site of origin” scenarios, an acceptable level of risk to the environment is defined in the context of the sites current/baseline condition. This enables the re-use of otherwise contaminated materials on the basis of waste minimisation; land quality is being maintained or enhanced, thus achieving the objectives of the Waste Framework Directive.

When considering the importation of foreign materials to a site it is important to ensure that the materials will be used in a way that achieves the same goals. If materials were imported to a site so that new hazards were created, or existing hazards increased the net effect would be to increase the level of risk posed to human health and the environment at that site. This would be contrary to the objectives of the waste framework directive. It should be remembered that land-use can and does change over time meaning that any new hazards created by importation of materials will have to be dealt with in due course. The net effect is that land quality would have been degraded rather than maintained or enhanced; this is not considered sustainable.

The differential between the costs of disposal of hazardous vs. non-hazardous materials also make it attractive to criminals to undertake “sham recovery” operations whereby the development itself is secondary to the profits to be made in circumventing legal controls on disposal. By providing clear guidance in the DoWCoP regarding such matters the Environment Agency hope to dissuade its potential exploitation in this manner.

Q6 a.) How should I approach the assessment of chemical suitability in Cluster Projects given the restrictions imposed on reuse highlighted in Watchpoint 15?
The following simple approach can be used to ensure that you do not inadvertently introduce new hazards to a receiver site OR significantly increase the hazards that are already present:

1.) Define the quality of the material you need at your receiver site by reference to a site specific risk assessment as normal. Remember that in order to be suitable, any materials must not cause pollution or harm to human health or the environment (including controlled waters) at the location at where they are to be used.
2.) Check whether the values derived would fall above the current thresholds used for hazardous waste classification purposes.
3.) If any of the values are above these thresholds then alter the materials specification to limit the allowable levels of these substances to below the thresholds.

In most cases this conservative approach will be sufficient to prevent the importation and reuse of materials in a way that the Regulator may consider to be “Sham Recovery”. It should also prevent the inadvertent creation of any significant problems for any future regeneration of the site.

In the very unlikely event that the concentration of some substances at your receiver site are already above the hazardous waste classification thresholds but are not posing any unacceptable risks (as demonstrated by your site specific risk assessment agreed with the regulators), then raise the issue with the Environment Agency when seeking approval for the Cluster Project. In exceptional circumstances you may be allowed to import materials with levels of substances equal to or below the levels already existing at the receiver site. To do this the Environment Agency will need to be wholly satisfied that the proposal is not unnecessarily substituting hazardous materials for non-hazardous alternatives (i.e. Sham Recovery).

(Q7) Why is there not a short form Materials Management Plan for small volumes of lower risk materials?
The new Materials Management Plan form is designed to be used for all scenarios covered by the DoWCoP. Once used it will become clear that not all fields within the form need to be completed for every scenario.

(Q8) Why is the term ‘adequate site investigation’ used over ‘ground investigation’?
Version 1 of the DoWCoP stated “comprehensive Site Investigation” which was considered too onerous for every site, for example at some sites no investigation would be necessary. However, in other situations more than just a Ground Investigation will be required e.g. Desk Top Study, therefore the steering group suggested the term “adequate Site Investigation” as an appropriate compromise.

Aggregates Protocol

(Q9) The DoWCoP scope excludes “excavated infrastructure material such as pipework and storage tanks” Does this exclude the use of excavated infrastructure such as road bases, car parking areas etc…? And if this is the case will operators need to use the DoWCoP and the WRAP Aggregates Quality Protocol on the same site?
The Environment Agency’s concerns centre on potentially polluting substances that can be associated with infrastructure e.g. pipes and tanks that may have residue products within them, concrete with adhered asbestos etc…. Other excavated infrastructure can be reused under the DoWCoP on the site of origin and receiver sites within a CLUSTER. If fully complied with the Aggregates Protocol allows for inert materials to be used at any site, including those currently not within the scope of the DoWCoP.

(Q10) Why did a DoWCoP emerge from this process rather than a BREW Quality Protocol for soils?
BREW looked at this, but it was felt that the inherent multifunctionality elements of the programme contradicted the Governments suitable for use and risk based approach. The recommendation from that work was to build upon the Environment Agency guidance “Definition of Waste: Developing on greenfield and brownfield sites”, which the DoWCoP does. In effect, there is no single definition of what is "clean" that can be provided for soil that would allow it to be used at all sites and in all circumstances, unless of course it is inert and linked to a Quality Protocol.

Qualified Person (QP)

(Q11) I trained and was registered as a Qualified Person under version one of the Definition of Waste Code of Practice. Can I re-register as a Qualified Person for the current version of the DoWCoP.No. Individuals will, as of January 2013 be expected to attend the one day training course again. This is required due to the amount of time which has passed since the versions changed.

(Q12) For the on-site reuse scenario the Qualified Person submits the Declaration to the Environment Agency and then excavation begins. For Cluster projects the Environment Agency still wants to agree the point that treated materials cease to be waste on a project by project basis.
a. At what point in the process should these discussions take place?
At project planning stage.
b. Who is the point of contact?
Enquires should be directed to the local Environment Agency office in the first instance. Where a Cluster project straddles Environment Agency area boundaries then the area where the Hub site is located should be contacted. Assistance will be given by NTS – Geoscience team if required by the local team 
c. What information needs to be submitted to get this agreement?
A Material Management Plan covering the sites concerned which contain the lines of evidence such as Hub site permit, contractual inter-relationships and responsibilities, mass balance calculations etc. (also see paragraph A3.14 - DoWCoP Version 2)

(Q13a) Why is there a need to consult with the Environment Agency and Local Authority if contamination is not suspected i.e. a project progressed via Route B of the DoWCoP. Such consultation did not exist prior to the publication of the DoWCoP and it adds an administrative burden on to the regulators.
Given that there is no suspicion of contamination there should be no need to consult. The Qualified Persons should satisfy themselves prior to signing the Declaration that there is evidence to support this e.g. Desk Top Study.

It will be good practice for the Qualified Person to include a clear request to see all relevant documents and to record those documents provided to them that formed the basis for the signed Declaration. It would be prudent to have a “full disclosure” clause in any contractual agreement between the Qualified Person and the person commissioning the works.

Under Route B – Direct Transfer – would there now be a need to consult?
Liaison with regulatory authorities regarding any development should continue as normal (e.g. discussions with local planning authority etc.) however there is no need to specifically consult the Environment Agency / Local Authority about remediation objectives or suitability of materials if such materials fit the description set out in Appendix 2 of the DoWCoP relating to Direct Transfer.

(Q13b) How does the Qualified Person know that there are “no objections”, as stated in the Declaration, from the Environment Agency or Local Authority, particularly if they are not expected to enter into dialogue with them?
The purpose of this requirement is to avoid the application of the DoWCoP in situations where there is already an ongoing dispute regarding the proposals at the site, for example where the remediation proposals do not satisfy the requirements of the regulator(s). The person commissioning the Qualified Person needs to provide evidence so that the Qualified Person can be confident in signing the Declaration. This can take the following forms:

Route A – where contamination is present or suspected:

  • Actual correspondence (e.g. letters, e-mails, minutes of a meeting etc…) clearing stating this.
  • Correspondence showing that the regulator has been approached but has declined to comment in detail on the proposal or has provided generic advice only.
  • Correspondence showing that a real attempt has been made to engage with the regulator but that no response has been received (a minimum 21 day period should have elapsed before this could be demonstrated).
  • The planning permission provides a clear link to the approved Remediation Strategy (where planning is applicable).

Route B –contamination not suspected

  • Actual correspondence (e.g. letters, e-mails, minutes of a meeting etc…) clearing stating this.
  • Correspondence showing that the regulator has been approached but has declined to comment in detail on the proposal or has provided generic advice only.
  • Correspondence showing that a real attempt has been made to engage with the regulator but that no response has been received (a minimum 21 day period should have elapsed before this could be demonstrated).
  • Desk Top Study clearly indicates that no contamination is suspected, hence no need for consultation (see FAQ 9a above) and therefore it is reasonable to conclude that there is no objection in relation to the use of the materials in accordance with the Material Management Plan.
  • The planning permission provides a clear link to how the materials are to be dealt with (where planning is applicable).
  • The Design Statement clearly sets out how the materials are to be dealt with and the Statement has been agreed e.g. correspondence, minutes or there is a clear link from a planning permission (where planning is applicable).

There is some confusion over the subject of “agreement” and reference to the “no objections” statement in the Declaration. It is the Declaration wording that is most important. The reference to “no objections” is relevant to objections to waste management issues and the detail of the DoWCoP documentation – rather than objections to other aspects of a planning submission e.g. flooding.

(Q14) What is the distinction between reviewing and checking (in the context of Qualified Person actions)?
Reviewing in this context means making sure that all documents are there and that e.g. risk assessment conclusions align with specification and the Remediation Strategy. Checking means working through the risk assessment, for example, to check that conclusions are right – this is deliberately not required in the DoWCoP as the Qualified Person would be straying into territory of others. The Steering Group did not want to have work paid for twice and did not want confusion in relation to roles and responsibilities. It was a deliberate decision to limit the role of the Qualified Person and hence liabilities remain as they were before the introduction of the DoWCoP.

(Q15) Does the Qualified Person just check the existence and conclusions of the Risk Assessment not the detail?
Yes. The role of the Qualified Person is deliberately limited to that set out in the DoWCoP. If the Qualified Person was to come across any fundamental error in any of the documentation (this is not just restricted to the Risk Assessment) then it is expected they would raise the issue with the person who commissioned them as a Qualified Person. However that would be done outside of the requirements of acting as a Qualified Person.

(Q16) Contracts can be extremely large, to what depth should they be reviewed?
The expectation is that the person commissioning the Qualified Person should provide a summary which only details the parts relevant to the DoWCoP. It would be prudent for the Qualified Person to provide a pro-forma / questionnaire to the employer setting out what aspects need to be presented e.g. roles and responsibilities of the various parties relating to the reuse and treatment of excavated materials, contingency arrangements etc...

(Q17) How long will the process (Production of Declaration) take and what will it cost?
This will depend on the complexity of the project, how the information is to be presented and the market rate of the individual Qualified Person.

(Q18) How rigidly will the DoWCoP Qualified Person requirements be applied e.g. will there be flexibility if someone has more than adequate experience, but is not chartered?
Chartered status is required. Experience and chartered status are tackling two different aspects.Chartered status supports the statements made in the DoWCoP relating to self-regulation and a high level of professional integrity. That is not to say that the criteria may not change in the future following a sufficient period of the DoWCoP being used. Note that in terms of experience Qualified Persons should have a track record in site investigation / remediation and waste management issues.

(Q19) Can a Specialist in Land Condition (SiLC) act as a Qualified Person?
Yes provided that they attended a recognised training course, and meet the other requirements, such as registration set out in Appendix 6 of the DoWCoP.

(Q20) The DoWCoP (Appendix 6) states that the Qualified Person should not be directly involved in the management or execution of the project. Is it acceptable for the Qualified Person to have had some direct role in the early stages of the project (e.g. management of site investigations or setting up the project under planning) and equally – could a Qualified Person become involved in project management or execution once the Declaration is completed and signed?
The principle here is that there should be no possibility of Qualified Persons checking their own work. As such, it is considered that any direct involvement in the initial stages of the project, or its establishment, will exclude someone from acting in the Qualified Person role on that project. Once the Declaration is completed, signed and submitted, the Qualified Person role is finished and that person could go on to take a direct role in the management and execution of the project. Note, however, that in a Cluster project, there may be a number of Declarations to be completed and also the possibility of adding to that number if further sites join the Cluster. If the Qualified Person has become involved in the management and execution of the Cluster project having completed the initial Declaration(s) then a new Qualified Person will be required to deal with such additions.

(Q21) If there is no hope of recovery of materials and it is definitely going to be classified as waste, is there merit in notifying the Environment Agency centrally of a “nil Declaration”
No. The system has been established for those who intend to operate under the DoWCoP and recover excavated materials.

(Q22) What happens to Declarations when received?
They are scanned and put into a document management system – this is then available centrally and at the local Environment Agency office.

(Q23) Is it recommended to send a further copy of the Declaration to the local office of the Environment Agency?
No, neither required nor desirable. The Environment Agency will disseminate and manage decisions regarding audits etc. from the centre.

(Q24) When will the more formalised arrangements for the Qualified Person to be registered be enacted?
CL:AIRE is the recognised Registration Body. Details of those requesting to be registered as a Qualified Person should complete the Qualified Person Declaration and submitted it to CL:AIRE who will then act as a “one stop shop” for anyone wanting to employ a Qualified Person.

(Q25) Can the Qualified Person change their mind over a submitted Declaration if new information comes to light?
There is no requirement for the Qualified Person to be further involved with the project once the Declaration is submitted. There is no mechanism for retracting a Declaration within the DoWCoP, even when there is a material change to the project. It is important that people involved with the excavation and reuse of materials understand the requirements of the DoWCoP e.g. they would be responsible for amending the Materials Management Plan and recording what actually happened to that material in the Verification Report.

(Q26) Are there any long term liabilities that may arise from the actual use of unsuitable material to the Qualified Person who signed the Declaration?
No – liabilities remain as they currently are without the use of the DoWCoP. The Qualified Person is signing the Declaration confirming everything is in place, as it should be. The actual use of materials outside of the agreed specification would occur after the Qualified Person’s involvement. However if a Qualified Person is found to have fraudulently completed a DoWCoP Declaration then their registration will be reviewed.

(Q27) Will the Environment Agency acknowledge receipt of Declarations?
The Environment Agency has revised their position and an acknowledgement will be sent after submission of the Declaration.

(Q28) What records should the Qualified Person keep?
The Qualified Person should keep a record of all of the documents that were provided to them for review.

(Q29) How far back do you go in relation to the “relevant individual convictions” exclusion for Qualified Person’s status?
5 years.

(Q30) Could an individual acting as a peer reviewer of certain aspects of the project act as Qualified Person?
Yes. Provided that it was strictly review, with no detailed involvement. Independence from the running of the project would need to be very clearly demonstrated.

(Q31) Who is responsible for sending the DoWCoP declaration to Environment Agency?
The DoWCoP is silent on this. However the Environment Agency Position Statement anticipates that it is the Qualified Person.


(Q32) Can a Cluster involve 2 sites only?
Yes - That is the simplest Cluster model.

(Q33) Does the Hub site need to be covered by an Environmental Permit?

(Q34) Given the Hub site has an Environmental Permit can the site be used at the same time to treat hazardous waste to non-hazardous waste?
Yes – provided the Environmental Permit allows for that particular treatment and that the wastes are adequately separated from treated materials associated with the Cluster project. Any particular activity must not extend beyond what was reasonable for the Cluster project, remembering that Cluster is a temporary activity.

(Q35) Is the Sheffield pilot Cluster project written up in any form?
No, but the work on it has fed into the DoWCoP and the Cluster Guide.

(Q36) Does material need to be treated at the Hub site or could it just go in and then out to a site where it is suitable for use?
Yes it could pass through the Hub site without treatment if all in line with the DoWCoP i.e. suitable for use is just one factor that has to be satisfied. The rationale for this is that the Hub site operator becomes the holder of the waste as it is accepted at the Hub site. As the holder of waste the Hub site operator can not allow it to leave the site as non-waste unless he/she is satisfied that the DoWCoP has been followed in relation to the receiving development site.

(Q37) What happens if out of specification material is received at a Receiver site?
It should be returned to the Hub site (see DoWCoP paragraph A3.13). It would be prudent to use a registered waste carrier in transporting non-wastes from the Hub site to aid in this scenario i.e. it is easier to raise Duty of Care transfer notes than enter in to a new contract with a registered waste carrier to return the load. (There is no need to use transfer notes for material considered to be non-waste – it is recommended that you do not use transfer notes as Delivery tickets).

(Q38) Can material with different contaminant concentrations be blended?
Yes to facilitate treatment, but not for disposal. Blending should only be for operational reasons, not to achieve dilution.

(Q39) Is material waste while in stockpile on the Hub site?
Yes – before and after treatment. It can cease to be waste upon other DoWCoP criteria also being satisfied (see Watch Point 16).

(Q40) If a Cluster was established and operating, when an opportunist site appeared, should the introduction of the new site be discussed with the Environment Agency?
Yes. The Cluster concept recognises that opportunist sites may appear once the Hub site is established and provides a lower cost opportunity for developing land, this may include Donor and / or Receiver sites. The defined Cluster project would then have to be re-defined to include the opportunist site (or sites). See Watch Point 17.

(Q41) The exercise within the CL:AIRE one day training resulted in a surplus of material located at the Hub site. Would the Environment Agency agree to such a proposed Cluster project?
Yes – provided the contingency arrangements and contracts identify who is responsible for it, what will happen to it and that sufficient funds are in place to deal with it satisfactorily. The mass balance across the sites needs to aim for this surplus amount to be as small as possible in the first instance (see paragraph A3.10). The Cluster concept recognises that new sites may be subsequently added to a project and this can include an additional Receiver site that has a need for it.

(Q42) How would the DoWCoP be applied to a phased project where material from one phase may not be returned until a subsequent phase?
This would hinge on the certainty of use and the time scale involved, but does fit within the scope of the DoWCoP. The Materials Management Plan should clearly identify the phased approach.

(Q43) How do the economics get sorted out, i.e. price for treatment at Hub and “value” of material delivered to Receiver?
It is determined on the basis of the local market and contractual arrangements (including risk and profit sharing).

(Q44) Can I transfer materials which are above hazardous waste thresholds?
No. See Watch Point 15. The process should -
a.) Set your specification for suitability based upon a site specific risk assessment for the receiver site.
b.) Check whether or not the levels of any contaminants in that spec are above hazardous waste
c.) If they are then modify the specification to reduce the acceptable level for those contaminants to
below the hazardous waste threshold.

Verification Reports

(Q45) Is the Verification Report the same as that prepared for other purposes?
Contaminated land practitioners think of a document that has a much wider scope. The DoWCoP relates specifically to the reuse of excavated materials and demonstrating how the reuse has achieved or furthered the objectives relating to that use. In relation to the DoWCoP it is anticipated that it is a subset, or specific section, of a verification report. For the Design Statement route (where contamination is not suspected) it may only cover the reuse of excavated materials and nothing else. It is a new requirement for these types of projects (it is anticipated that it will be a very small document).

(Q46) Is the Verification Report sent to the Environment Agency?
No. The Environment Agency does not require the submission of the Verification Report. However, they may request to see a copy in carrying out an audit.

(Q47) Does Verification Report need to include a requirement for ongoing monitoring?
Not in the context of the section of the Verification Report that deals with materials handling under the DoWCoP. It may do elsewhere for other reasons.

Relevant Factors

(Q48) Does certainty have to be demonstrated by planning permission?
No – that is just one route. The planning permission can be seen as a key piece of the picture, but it is a complete picture that has to be developed. There may be sites where no planning permission is involved e.g. remediation following a chemical spill. The agreed Remediation Strategy would be the key piece of evidence. Other lines of evidence would include contracts and Design Statements.

(Q49) Is material that meets specification and reused non waste, even if it would be classified as hazardous waste if sent off site for disposal?
Correct – If appropriate volumes are suitable and certain to be used and would not cause pollution of the environment or harm to human health. If it is not waste there is no need to classify it as inert, non- hazardous or hazardous.

(Q50) Would excavated contaminated ash if reused still be legally waste?
No - not necessarily if dealt with in accordance with the DoWCoP and all the factors are demonstrated. (The DoWCoP does not relate to ash generated at a power plant – the DoWCoP is specific to that which may be found deposited historically)

(Q51) If material requires some work to meet geotechnical properties what happens?
Refer to the Environment Agency FAQs webpage.

(Q52) If material is used as suitable for one use (e.g. commercial/industrial), under the DoWCoP and a later development has a more exacting standard for which it would not have been suitable (e.g. houses/gardens) does it revert to its waste status?
No. The material has by that time been fully incorporated in to the earthworks and hence fully recovered. The question is then if the holder of that land discards it again.

(Q53) Can material be stockpiled on site for use in a later phase of project if using the DoWCoP?
If the stockpile is anticipated to be in place for longer than 12 months then agreement from Environment Agency should be sought (see DoWCoP paragraph 4.1). The longer the storage time the less “certainty” of reuse.

Materials Management Plans and Site Waste Management Plans

(Q54) How do the Site Waste Management Plans and DoWCoP overlap?
If the project relates solely to the earthworks the Materials Management Plan will in essence cover the bulk of the requirements of a Site Waste Management Plan (to be compliant with the Site Waste Management Plans requirements the Materials Management Plan would have to be top and tailed). Where the project is larger than just earthworks the detail within the Materials Management Plan would be a sub set of the Site Waste Management Plans i.e. dealing with one waste stream – excavated

(Q55) On a Greenfield site, covered by a Site Waste Management Plan, why use the DoWCoP and add further bureaucracy?
The DoWCoP does not have to be used, it is voluntary. However, it should be noted some people do not realise that they are dealing with waste on Greenfield sites and hence require an Environmental Permit or exemption, even where a Site Waste Management Plan has to be produced. (A Site Waste Management Plan does not remove the need for an Environmental Permit)

(Q56) Does the Qualified Person need to check that the treatment contractor has appropriate licences in place?
Yes (see Box B of the DoWCoP)

(Q57) We have developed our own templates for the Materials Management Plan, do we have to use the new template?
Yes. However it should be noted that the new form can be used not only as a template but as an index to the relevant facts contained within other supporting documents. It’s therefore possible to maintain any in-house reporting style provided the Materials Management Plan form is used as a cover sheet to assist cross referencing.

The steering group realise some individuals and organisations will have taken significant time to develop their own templates, however following many requests for a standard template the decision has been taken to make its use mandatory. The steering group hope all users will recognise the extra benefit of clarity this standard form will bring to the administration of the DoWCoP and hope that individuals and organisations are not too inconvenienced by this requirement.


Register of Environmental Benefits

We would also like to take that opportunity to improve and streamline the Definition of Waste: Development Industry Code of Practice (DoWCoP) on the basis of practitioner’s experiences. In order to do this industry feedback on the experiences and the benefits in using the DoWCoP is needed. On-line pro-formas to collate this information have been created to act as the Register of Environmental Benefits of the DoWCoP. This will allow CL:AIRE to feedback aggregated data to the industry. To this end we
would be grateful if you could complete the relevant of the two pro-formas when you are ready to report your use, or intended use.

This will provide us with information relating to:

  • The volume of waste reused on the site of origin
  • The volume of waste reused following treatment at a Hub site within a defined CLUSTER
  • Reduction in raw material consumption
  • Vehicle emissions*

*(derived from distances provided to the most appropriate facility that would have otherwise been used for treatment or disposal of the wastes and distances provided to where virgin materials would have been sourced) 

Main downloads


Terms & Conditions for Declaration Fee


Content: any material submitted or created by the Users;

Declaration: the Declaration submitted on behalf of the Users to CL:AIRE by a Qualified Person;

Intellectual Property Rights: patents, rights to inventions, copyright and related rights, trade marks, business names and domain names, rights in get-up, goodwill and the right to sue for passing off, rights in designs, database rights, rights to use, and protect the confidentiality of, confidential information (including know-how), and all other intellectual property rights, in each case whether registered or unregistered and including all applications and rights to apply for and be granted, renewals or extensions of, and rights to claim priority from, such rights and all similar or equivalent rights or forms of protection which subsist or will subsist now or in the future in any part of the world;

Qualified Person / QP: a suitably qualified person as listed on the register hosted by CL:AIRE here>>> see DoW CoP Appendix 6, pg 41.

Services: the services detailed in clause 1.2

Users: defined in clause 1.1;

We / us: CL:AIRE; and

You: the Users.

1. Outline of Process & Roles

1.1 DoW CoP users (Project teams & Qualified Person) ("Users") shall:

(a) Prepare all site information and planning documents in-line with the DoW CoP guidance document;
(b) Employ the services of a QP; and
(c) Arrange the QP to submit a Declaration document to CL:AIRE.

 1.2 CL:AIRE shall:

(a) Provide Users (specifically QPs (as applicable)) with a receipt of Declaration;
(b) Collect Declaration fees from DoW CoP Users (identified in the Declaration form);
(c) Hold information from the Declaration and report it to the Environment Agency and Natural Resources Wales;
(d) Verify QP status as active at time of the Declaration submission;
(e) Host guidance information on use and application of the DoW CoP on the CL:AIRE website; and
(f) Provide wider general industry guidance on the management of land, contaminated land and groundwater.

1.3 CL:AIRE shall not:

(a) Provide detailed project advice or review specific project details; or
(b) Accept or confirm any support or approval for projects using the DoW CoP.

2. Payment

2.1 If you have requested that CL:AIRE invoice you for purchases of products or services, payment must be received within 28 days of the date of the invoice. Upon receipt of payment, an email confirmation will be issued. Please note that products and services will not be distributed or available to download until full payment has been received and your order confirmed.

3. Obligation to pay

3.1 In the event of late or non-payment by you of any sums due, future use of the DoW CoP will be restricted and/or prevented to the organisation identified on the Declaration form until all sums due are received.

3.2 If you fail to make payment due to CL:AIRE by the due date for payment, then you shall pay interest on the overdue amount at the rate of 10% per cent per annum above the Cooperative Bank's base rate from time to time. Such interest shall accrue on a daily basis from the due date until actual payment of the overdue amount, whether before or after judgement. You shall pay the interest together with the overdue amount.

3.3 You shall pay all amounts due in full without any set off, counterclaim, deduction or withholding (except for any deduction or withholding required by law). CL:AIRE may at any time, without limiting its other rights or remedies, set off any amount owing to it by you against any amount payable by CL:AIRE to you.

4. Acceptance of Terms

4.1 Users of the DoW CoP and associated websites accept the terms and conditions herewith. Use of this website and the DoW CoP constitutes the Users' agreement to all such terms, conditions and notices as provided from time to time.

5. User Content, Data Security and Intellectual Property

5.1 Users are solely responsible for any and all Content that they submit or create. CL:AIRE does not endorse, support, represent or otherwise guarantee the accuracy or reliability of such Content.

5.2 By submitting or creating Content, Users warrant and represent that they are the author of such Content and/or that they have acquired all of the appropriate rights and/or permissions to use the Content in this fashion. CL:AIRE accepts no responsibility or liability for any infringement of any third party Intellectual Property Rights in relation to such Content. Further, Users waive all moral rights in any and all Content that they submit or create to be named as its author.

5.3 By accepting these terms and conditions, the Users grant a non-exclusive, worldwide, perpetual licence to CL:AIRE subject to the source data, both in terms of the person or the organisation entering the data and the address to which the Content relates, being kept anonymous, to (i) use the Content for any purpose and (ii) copy, distribute, transmit, publicly display, publicly perform, transmit and reformat all Content for the purpose of providing the Services.

 5.4 The Users represent and warrant that they have all necessary rights, power and authority to grant the licence described in Clause 5.3

5.5 CL:AIRE own all Intellectual Property Rights in the DoW CoP and associated processes.

5.6 All content on the CL:AIRE website is protected by copyright and other applicable Intellectual Property Rights. You may use the CL:AIRE websites and display and/or download on any single computer or print a single copy of any material for your personal or professional use provided you do not further copy or modify the page including, without limitation, by removal of any copyright notices. You may not otherwise reproduce, copy, distribute or use any material from any CL:AIRE websites. Permanent copying and/or storage of material or reproduction or incorporation of any part of it in any other work in whatever media is expressly prohibited.

6. Data Protection and Use

6.1 CL:AIRE aims to improve the performance of all concerned with construction and the environment. To enable us to achieve this, we collect and hold information about users of our products and services in which they have expressed interest from their use of the DoW CoP and CL:AIRE websites. This information is used to keep our customers updated on new developments in the industry and from time to time to obtain feedback on CL:AIRE's activities.

6.2 CL:AIRE shall comply with the Data Protection Act 1998 at all times. All data is treated in confidence and is not disclosed to any third parties, other than where we are required to or permitted to by law, or where you have given us your consent in advance. If you do not wish to continue to receive information from us, or if you have any questions or concerns about the information we hold about you, please email us at

6.3 CL:AIRE holds and reports information from DoW CoP Declarations to the Environment Agency and Natural Resources Wales on a regular basis or as-and-when requested to do so.

7. Confidentiality

7.1 A party ("receiving party") shall keep in strict confidence all technical or commercial know-how, specifications, inventions, processes or initiatives which are of a confidential nature and have been disclosed to the receiving party by the other party ("disclosing party"), its employees, agents or subcontractors, and any other confidential information concerning the disclosing party's business, its products and services which the receiving party may obtain. The receiving party shall only disclose such confidential information to those of its employees, agents and subcontractors who need to know it for the purpose of discharging the receiving party's obligations under these terms and conditions, and shall ensure that such employees, agents and subcontractors comply with the obligations set out in this clause as though they were a party to these terms and conditions. The receiving party may also disclose such of the disclosing party's confidential information as is required to be disclosed by law, any governmental or regulatory authority or by a court of competent jurisdiction. This clause 7 shall survive termination of these terms and conditions.

8. Liability

8.1 CL:AIRE is not responsible for the content or reliability of the linked websites and does not necessarily endorse the views expressed within them. Listing shall not be taken as endorsement of any kind.

8.2 Users should be aware that they use CL:AIRE's website, the Services and all relevant content at their own risk.

8.3 Nothing in these terms and conditions excludes or restricts CL:AIRE's liability for:
(a) death or personal injury caused by its negligence; or
(b) fraud or fraudulent misrepresentation on the part of CL:AIRE.

8.4 CL:AIRE intends for the content of this website to be accurate and reliable. CL:AIRE does not warrant the accuracy, completeness, non-infringement, merchantability or fitness for a particular purpose of any information available through the website or referenced links.

8.5 It is the responsibility of Users to ensure that any website accessed is free of potentially destructive items such as viruses.

8.6 Notwithstanding any other provisions in these terms and conditions, CL:AIRE will not be liable to you, whether in contract, tort (including, without limitation, negligence) breach of statutory duty, or otherwise, for any loss of profit or any indirect or consequential loss arising under or in connection with these terms and conditions, use of the DoW CoP or the website or other material referenced.

9. Availability of the Website and the Services

9.1 The website and the Services are provided "as is" and on an "as available" basis. CL:AIRE gives no warranty that the website or the Services will be free of defects and/or faults. To the maximum extent permitted by law, CL:AIRE provides no warranties (express or implied) of fitness for a particular purpose, accuracy of information, compatibility and satisfactory quality.

9.2 CL:AIRE accepts no liability for any disruption or non-availability of the website or the Services resulting from external causes including, but not limited to, ISP equipment failure, host equipment failure, communications network failure, power failure, natural events, acts of war or legal restrictions and censorship.

10. Changes

10.1 CL:AIRE reserves the right to change or remove any content from the website, in whole or in part, at its sole discretion, at any time, without notice.

11. Termination and duration

11.1 The Services shall commence upon receipt by CL:AIRE of a Declaration and shall continue until [such Declaration is submitted to the Environment Agency OR the Services are deemed complete as decided by CL:AIRE in its absolute discretion].

11.2 Without limiting its other rights or remedies, CL:AIRE may terminate these terms and conditions by giving you 1 day's written notice.

11.3 Without limiting its other rights or remedies, either party may terminate these terms and conditions with immediate effect by giving written notice to the other party if:
(a) the other party commits a material breach of any term of these terms and conditions and (if such a breach is remediable) fails to remedy that breach within 5 days of that party being notified in writing to do so;
(b) the other party suspends, or threatens to suspend, payment of its debts or is unable to pay its debts as they fall due;
(c) a petition is filed, a notice is given, a resolution is passed, or an order is made, for or in connection with the winding up of that other party; or
(d) the other party suspends or ceases, or threatens to suspend or cease, carrying on all or a substantial part of its business.

11.4 Without limiting its other rights and remedies, CL:AIRE may terminate these terms and conditions with immediate effect by giving written notice to you if you fail to pay any amount due under these terms and conditions on the due date for payment and fail to pay all outstanding amounts within 14 days after being notified in writing to do so.

11.5 Upon termination for any reason, you shall immediately pay CL:AIRE any outstanding unpaid invoices.

12. Governing Law and Jurisdiction

12.1 These terms and conditions and any dispute or claim arising out of or in connection with them or their subject matter shall be governed by and construed in accordance with the laws of England and Wales.

12.2 Each party irrevocably agrees that the courts of England and Wales shall have exclusive jurisdiction to settle any dispute or claim arising out of or in connection with these terms and conditions or their subject matter or formation (including non-contractual disputes or claims).

13. Assignment

13.1 CL:AIRE may at any time assign, transfer or deal in any other manner with all or any of its rights under these terms and conditions and may subcontract or delegate in any manner any or all of its obligations to any third party or agent.

 14. No partnership / agency

14.1 Nothing in these terms and conditions is intended to, or shall be deemed to, establish any partnership or joint venture between the parties, nor constitute either party the agent of the other for any purpose. Neither party shall have authority to act as agent for, or to bind, the other party in any way. 

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