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Chartered Institution of Water and
Environmental Management (CIWEM)

106-109 Saffron Hill, London, EC1N 8QS  
Tel: 020 7831 3110   Fax: 020 7405 4967

Contaminated Land Network

CIWEM's Contaminated Land Network (CLN) supports professionals in the contaminated land sector.

The function of the CIWEM Contaminated Land Network is to provide expert views for the Institution and to be a sounding board for current and new initiatives.


Role and Remit

Contaminated land is a global issue and many countries have a legacy of contaminated land resulting from historical industrial activity, waste management and from the previous regeneration of land. Contamination is still occurring across the world, due to inadequate or inappropriate operational controls and regulation in industry and in the management of waste. The presence of contamination can represent an unacceptable risk to human health or the environment.  

The role of the CIWEM CLN is to bring together government/non-governmental bodies, industry, academia and other stakeholders to stimulate sharing of knowledge and good practice in the management of contaminated land. The network aims to support the relationship between academic research and practice.

The CLN has a number of strategic linkages with CIWEM's waste management technical panel as well as through our status as a founding body of SiLC.  The SiLC Register brings together professionals from a broad range of backgrounds who advise on land condition matters.



The Network produced CIWEM's Contaminated Land Policy Position Statement which outlines CIWEM's views and policy position with respect to the assessment, management, remediation and development of contaminated land. It can be viewed here. 

The Network provided input to CIWEM's Policy Position Statement on Brownfield Development which sets out the position of CIWEM on brownfield development and issues around the legacy of contaminated land and its redevelopment. 


Steering Group

The CLN is a virtual global network, operating mainly by email. There is a steering group which meets on a regular basis to discuss topics of interest and concern in the sector and steer the activities of the network as a whole. The Steering Group is chaired by Sarah Dack, Specialist Environmental Public Health Scientist at Public Health England. 

Steering group members:

Sarah Dack - Chair

Sarah Dack is an experienced environmental risk assessor and Specialist Environmental Public Health Scientist at Public Health England.  She has 25 years' experience in the contaminated land sector as contractor, regulator and consultant.  Sarah has extensive experience in human health, waters and gas risk assessment, including food chain modelling for a large number of contaminants and scenarios.  She has previously carried out work in this field for the Environment Agency, European Union, World Bank, Technical Director with Hyder Consulting Ltd and UNIDO.


Gary Winder

Gary is a Chartered Engineer and currently a Managing Director at REC Ltd.  He has over 20 years experience in Environmental and Engineering Consultancy including the investigation, assessment and remediation of brownfield and contaminated land.  His particular specialism is in the redevelopment of such sites, advising developers on optimum solutions that collectively address contamination and geotechnical matters whilst maximizing the on site reuse and retention of soils and secondary aggregates.


Richard Boyle

Richard has a varied background starting within academia, where he gained a BSc, MSc and PhD in earth and environmental sciences and remediation, which has been followed with several years in environmental consultancies.  Richard is now a Senior Technical Manager within the Land & Regeneration Team at the Homes and Communities Agency (HCA), the UK Governments national housing and regeneration agency for England.  Richard advises central Government Departments on brownfield and contaminated land issues and assists on the HCA and partners (such as local authorities, registered social landlords, and developers) most challenging projects to understand and overcome technical issues.  He is also a lead for new Government initiatives and programmes and is the Programme Manager for the Land Stabilisation Programme.


Mengfang Chen

Prof. Chen has more than twenty years experience working in the UK and Chinese Contaminated Land Industry and specialises in hydrogeology, applied groundwater modelling, and quantitative human health and environmental risk assessment for industrially contaminated sites. He is the author of HERA (Health and Environmental Risk Assessment) model for the assessment of soil and groundwater risks and currently director for the Center of Site Remediation within the Institute of Soil Science, Chinese Academy of Sciences.


Danny Hope

Danny is Land Quality Technical Director at Hydrock, based in Manchester.  Danny is a Chartered Environmentalist, Chartered Water and Environmental Manager and registered Specialist in Land Condition (SiLC) with over 15 years' experience of land contamination and remediation work.  He has designed, managed and supervised ground investigations and remediation projects across a wide range of sites concerning contamination risks to human health and the environment. Danny has managed numerous site investigation and remediation projects on a variety of sites such as airports, docklands, landfill sites, waste transfer stations, colleges, manufacturing facilities and other derelict land.  Danny has worked with a range of clients in both the private and public sector. He is experienced in the implementation of both the Planning and Part 2A regimes.

Danny is part of CIWEM's Contaminated Land Network Steering Group and prior to its abolishment in 2012, was a member of the Environment Agency's North West Environmental Protection Advisory Committee. He is a Qualified Person in the use of the CL:AIRE Definition of Waste: Development Industry Code of Practice.




Trevor Howard

Trevor Howard is a Senior Advisor in the Environment Agency's national Groundwater and Contaminated Land team.  His work involves defining the organisation's priorities and approaches, advising Government and working with national industry stakeholders. 

Trevor's focus is on measures that prevent contamination or enable the sustainable management of land and water already affected.  This includes work on the Environmental Permitting, Environmental Damage, Part 2A and land use planning regimes.

Trevor was previously a technical specialist for the EA's Midlands region working on contaminated land, waste regulation and landfill science.  He transferred into the Environment Agency on its formation from Staffordshire County Council's Waste Regulation Authority.


Andrew Wiseman

Andrew is a lawyer specialising in environmental law and is listed in both the Chambers Guide and the Legal 500 as one of the country's leading environmental lawyers.

Andrew is a former chair of the UK Environmental Law Association. He a Vice Chair of Environmental Protection UK's Land Quality Committee, a trustee of CL:AIRE and Chairman of the CIWM Corporate Governance and Professional Ethics Committee.

He was recently appointed as Chairman of DEFRA's Contaminated Land National Expert Panel (the only lawyer on the panel).

Andrew is a joint editor of the Law Society's Environmental Law Handbook  and been interviewed on television and radio including BBC News 24, the 6 and 10 O'clock news, LBC business news, Watchdog, Radio 4 and 5 in relation to contamination issues.

Andrew was awarded an OBE in the 2013 New Year's honours list.

He had advised numerous organisations in relation to land contamination including various local authorities around the country including providing specialist support and training. This included acting for the first local authority in the country to identify a site under Part 2A in April 2000.

  • Mike Summersgill - SEnSe Associates
  • Dr. Nick Voulvoulis - Imperial College, London
  • Joanne Kwan - CIRIA
  • Sally Shaw - Cheshire East Borough Council
  • Nicola Slade - Epsom and Ewell Borough Council
  • Jonathan Steeds - Atkins 
  • May Chan - Atkins
  • Lucianno Butti - University of Padua


If you have contaminated land as an element of your post, are interested in contaminated land issues or require further information on joining the network or steering group please contact Alastair Chisholm.

Membership of the network is not a major commitment - it is a good way to keep in touch with CIWEM's work on contaminated land issues.  


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Chartered Institution of Water and
Environmental Management (CIWEM)

106-109 Saffron Hill, London, EC1N 8QS  
Tel: 020 7831 3110   Fax: 020 7405 4967