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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

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.


Steering Group

The CLN is a virtual global network, operating mainly by email. However, the steering group meets on a regular basis to discuss topics of interest and concern in the sector and steer the activities of the network.

Steering group members:

Gary Winder - Chair

Gary is a Chartered Engineer and currently a Director within the Geo-Environment discipline of WYG.  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.


Jonathan Abra

Jonathan Abra works for the Environmental Sustainability Knowledge Transfer Network. The Network, funded by the Technology Strategy Board, exists in order to accelerate the UK's transition to a low carbon, resource and energy efficient economy by connecting businesses, universities, other research organisations and government agencies, and catalysing innovation across a wide range of environmental technologies. ESKTN is the co-ordinator of the European Triad Community of Practice - an on-line forum / monthly telephone conference relating to decision-making and management of uncertainty in the investigation and remediation of contaminated land. It also acts as the link between European Triad and US Triad Communities of Practice.

Within the ESKTN Jonathan has responsibility for the Water sector and also In-situ Remediation of Contaminated Land.

A hydrogeologist by training, Jonathan started his career in environmental consultancies investigating groundwater contamination at industrial sites and landfills before moving to the mineral industry where landfill became a much more significant part of what he worked on. Returning to consultancy, he worked in new technology innovation for the water and wastewater sectors before moving to the ESKTN in 2009. His interests lie in sniffing-out innovative technologies for identification, monitoring and remediation of contaminated land and helping them to see the light of day by partnering with academics/industrial partners and appropriate funding. He is currently working with the Gas Distribution Network Operators to help identify ways to clean up old gas works, gas storage sites and pipeline infrastructure.


Natalyn Ala

Natalyn Ala is a Technical Director for Atkins Ltd advising on ground and groundwater contamination, remediation, waste characterisation and environmental risks and liabilities associated with infrastructure, energy, land regeneration, mergers and acquisitions and litigation projects. Her technical specialism is as an international hydrogeologist. She is currently a Council member of the London Geological Society and a member of the Atkins Women's Leadership Council.


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.


Sarah Dack

Sarah Dack is an experienced environmental risk assessor and Technical Director with Hyder Consulting Ltd.  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 and UNIDO.


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.

  • Dr. Nick Voulvoulis - Imperial College, London
  • Mark Hill - Central Government
  • Joanne Kwan


Policy Position Statement


The Network produced CIWEM's Contaminated Land Policy Position Statement, which was published in September 2013 and can be viewed here. 



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


Seeking Members

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