Ground Gas


Director of Site Services, GeoShield

Paul has been in construction for over 30 years. Paul has a BSc Hons in Construction Management. Paul is a director of GeoShield a verification company which has been verifying gas remediation systems for 6 years.


Paul is an assessor for NVQ 2 gas installers and the NVQ 4 in verification of ground gas protection systems. Paul assisted on creating the NVQ 4 through to its launch. In 2018 Paul was a founder member in creating the British Verification Council which Paul currently is Chairman.


Paul also has his CSSW qualification (Surveyor in Structural Waterproofing) which is especially relevant in today’s verification strategy. Paul’s combination of experience in construction and ground gas strategy has allowed him to create quality assurance programs in Europe, Middle East and Asia.


Principal Scientist, Cox-Colvin & Associates

Craig Cox serves as President and Principal Scientist for Cox-Colvin & Associates Inc., and is

responsible for providing managerial and technical oversight on major environmental projects

conducted by the firm. Mr. Cox is the inventor of the Vapor Pin®, a sub-slab soil gas sampling

device used worldwide, and is the primary architect of a variety of environmental database

applications, including Data Inspector TM.


Project Director, CL:AIRE

Nicola Harries is a chartered geologist and scientist and has over 25 years’ experience within the environmental industry. She is a project director at CL:AIRE and has responsibility for managing a number of industry initiatives. Nicola co-ordinates the National Brownfield Forum, the National Quality Mark Scheme for Land Affected by Contamination, Sustainable Remediation Forum UK (SuRF-UK) and SuRF - International.

Nicola has developed recently a series of different training courses on working with asbestos in soil in line with CAR-SOIL and Verification of Gas Protection Systems. In January 2018, CL:AIRE was awarded the project management of the Phase 2 of Category Four Screening Level Project, which she is leading.  More recently, she has been working closely with a cross industry working group to develop an accreditation scheme for gas verifiers.


Director - Geosciences, RSK

Dr. Tom Henman has over 20 years’ experience of contaminated land assessment and
remediation, gained in both consultancy and for a problem-holder. He is a Director based in RSK’s Glasgow office and is also responsible for leading technical quality within RSK’s 200- strong Geosciences business. Tom is a Chartered Chemist and a Chartered Scientist. He is also a registered Specialist in Land Condition (SiLC), a Suitably Qualified and experienced Person (SQP) under the National Quality Mark Scheme (NQMS) and a SiLC assessor. He has a keen interest in developing and promoting technical excellence and has been actively involved in industry initiatives led by AGS, CIRIA and CL:AIRE furthering the development of industry standards. He has represented the environmental consultancy sector on the Scottish Government Contaminated Land Advisory Group. Tom has collaborated with a number of universities, including the University of Strathclyde and the University of West of Scotland amongst others, on innovative research projects, co-authoring research papers.


Contaminated Land Consultant, Arup

Amy is a Chartered Geologist and Contaminated Land Consultant with seven years’ experience in the brownfield redevelopment industry. Amy was awarded the Best Young Brownfield Professional at the September 2019 Brownfield Briefing Awards. Amy has specialist skills in site conceptualisation, geoenvironmental ground investigation, and contaminated land risk assessments, including for ground gases. Amy is a member of the SoBRA working group for asbestos in soils. She is an Early Career Professional member of the CL:AIRE Technology and Research Group, and serves as Treasurer of the Geological Society Contaminated Land Group. Amy has had a key role in the design and project management of the ground contamination, risk assessment and other land quality aspects of the Whitecliffe development project since 2016.


Technical Director, BuroHappold

I am a Chartered Geologist and registered SiLC with over 40 years professional experience including 25 years on contaminated land. I spent the first ten years carrying out geological and geotechnical investigations and assessments followed by four years advising on minerals planning at the DoE. I have provided expert witness evidence, written best practice guidance, delivered training and am a guest lecturer at several Universities. I currently chair the AGS Loss Prevention Group and am a member of the SiLC PTP.


Technical Director, The Environmental Protection Group Ltd (EPG)

Steve is a Chartered Engineer and Environmentalist with 30 years professional experience of geotechnical and environmental engineering. Steve has helped to shape much of the UK guidance on ground gas assessment and remediation.  He is widely recognised as a leading expert in ground gas and provides advice and designs for remediation schemes on sites around the world. He has successfully applied quantitative risk assessment to ground gas for both development and Part IIA sites over 20 years.  He is co-author of the Local Authority Guide to Ground Gas and was a member of the drafting committee for British Standard BS8576 on ground gas investigation. He was also a member of the research team for a recently completed CIRIA project on the verification and integrity testing of gas protection systems.

Steve also presents training courses on ground gas for the Chartered Institution of Environmental Health and CIRIA.




Principal Scientist, Cox-Colvin & Associates

Craig Cox serves as President and Principal Scientist for Cox-Colvin & Associates Inc., and is

responsible for providing managerial and technical oversight on major environmental projects

conducted by the firm. Mr. Cox is the inventor of the Vapor Pin®, a sub-slab soil gas sampling

device used worldwide, and is the primary architect of a variety of environmental database

applications, including Data Inspector TM.


Principal Hydrogeologist, WSP

Katie Gamlin is an Associate Hydrogeologist at WSP, within the Ground Risk and Remediation team in Bristol. She has 15 years of experience in environmental and engineering consultancy, covering a broad range of projects from site investigation to complex groundwater assessment and development of remedial strategies.  She has worked with a broad range of clients in both the private and public sector, providing support on projects in both the UK and abroad.

Katie is a technical specialist with respect to qualitative and quantitative groundwater risk assessment, developing remedial target criteria that are pragmatic, achievable and technically feasible. She has successfully employed monitored natural attenuation (MNA) as an appropriate remedial strategy at a number of sites through to regulatory agreement for cessation of monitoring and closure. 

Katie is a Chartered Water and Environmental Manager (MCIWEM C.WEM) and a member of the Society of Brownfield Risk Assessment (SoBRA).


Hydrogeologist & Application Development Manager, In-Situ

Adam Hobson is a hydrologist and application development manager with In-Situ, a world-leading manufacturer of innovative environmental monitoring equipment and remote data collection and data management solutions.  Adam is based in the United States and has addressed hydrologic monitoring and data collection challenges around the world for over 20 years. He specializes in the design, planning, and implementation of hydrologic and environmental investigations, characterizations, and feasibility studies.


Principal Data Scientist, Shell

Wayne Jones has a BSc (Hons) degree in Mathematics from the Bangor University of Wales, a MSc
in ‘Mathematical Modelling for Industry’ from the University of Loughborough and a PhD in Ecological Modelling from the University of Strathclyde. Prior to joining Shell in 2007, Wayne worked for EDF as
a quantitative analyst and was a senior statistician for a price optimisation consultancy. Wayne became a chartered statistician in 2008, and during his 13 years in Shell has worked on a wide variety of projects, including systematic trading strategies, fuels science, renewables production forecasting and the analysis of environmental monitoring data.


Senior Hydrogeologist, Golder Associates

Emma McAnaw is a Senior Hydrogeologist and Project Manager with over 12 years’ experience in groundwater risk assessment and contaminated land characterisation and remediation. 

Emma has specialist experience in various aspects of hydrogeology and site characterisation and remediation, including: complex contaminated land site investigation and remediation design, management, and verification; risk assessment (controlled waters, hydrogeological, and human health), and groundwater abstraction feasibility through to licensing.  Emma works across several market sectors within Golder including manufacturing, power, mining, and waste.


Technical Representative, UK & Ireland, PeroxyChem

Mike is a Chartered Civil Engineer with 45 years of experience in the planning, design & construction
of civil engineering and commercial re-development projects. A Fellow of CIWEM and its 2013/14 President, Mike is also a Specialist in Land Condition (SiLC 003), and for 40 years a Member of ICE,
as well as a long-time Trustee of the CL:AIRE organisation. Since 2017, he has been the (part-time)
UK & Ireland technical representative for PeroxyChem Environmental Solutions.


Mike began as a water/drainage engineer for Yorkshire Water, before specialising in geotechnical aspects of construction in the 1980’s, and then moving early into brownfield remediation. Mike’s employment has included periods as Head of Geo-environment for WS Atkins Epsom and General Manager of VHE Technology, before leading RSK GeoConsult’s team in their Kent office, and finally Technical Director at Ecologia Environmental. He co-authored CIRIA C557: ‘Remedial Engineering
for Closed Landfill sites’ in 2001.


Data Collection & Analysis


Account Director, Landmark Information

Piers is an Account Director at Landmark and has 19 years’ experience working with the UK’s top multi-disciplinary consultancies across environment, infrastructure and commercial property sectors.  During this time, Piers has been involved with many of the UK’s largest and most prestigious infrastructure and development/redevelopment schemes, helping ensure professionals working on these schemes are provided with the appropriate intelligence at the right time.


Director, Geo-Environmental Matters & Project Steering Group Chair

Bringing over 29 years of experience in UK land development, Claire is a contaminated land specialist (Registered SiLC) with a background in geotechnical engineering, specialising in ground risk management advice. She combines running her consultancy (Geo- Environmental Matters Ltd) with part-time lecturing at the University of Portsmouth. Formerly the UK Practice Area Lead and part of the EMEA Remediation Services Technical Team for AECOM. Over the last 19 year she has chaired over 10 CIRIA project steering groups for their contaminated land programme including all four asbestos in soils projects. Claire is a member of the SiLC PTP.


National Lead - Assessing Risk in Sharing Data and Information, Environment Agency

Profile coming soon...


Data Sharing and Access Manager, Environment Agency

Profile coming soon...


Geoscience Technical Advisor (on secondment from BGS), Geospatial Commission

Holger Kessler joined the BGS in 1998 with a degree in Physical Geography and Soil Science from the University of Frankfurt in Germany. For the beginning of his career he was employed as a geological surveyor mapping glacial deposits and landscapes in North Norfolk and Yorkshire. In the early 2000s Holger became involved with a major research project at the BGS developing the capabilities for 3 dimensional geological modelling. 

Since then Holger has been instrumental in moving the BGS from a traditional mapping to a modern digital modelling organisation, working closely with stakeholders such as the Environment Agency and the geotechnical engineering sector. His main ambition is to make all BGS data and information as useful and accessible as possible to end users and policy makers in order to make more science-based decisions about the subsurface.

He is currently on full-time secondment to the Geospatial Commission at the Cabinet Office as Geoscience Technical Adviser shaping the UK’s first national geospatial strategy working alongside a team of policy experts, economists and geospatial specialists. He is responsible for stakeholder management and engagement for the National Underground Asset Register project.


Head of Consultancy, Groundsure

Ceri has over 20 years’ experience in environmental consultancy, much of which has been spent in research, utilities where she has worked on multidisciplinary consultancy working on due diligence as well as development lead projects. She is Head of Consulting at Groundsure where her team provides environmental data and support to the environmental industry and environmental searches to the financial sector. In recent years she has worked with clients to develop better ways to use data to make good land and property decisions.


She has a BSc in Biology, MSc in Environmental Management and is a Chartered Environmentalist through IEMA.


3D Geospatial Lead, British Geological Survey

I lead the development and application of 3D modelling and visualisation software to improve geological understanding of subsurface conditions for external income and science budget projects. As a Prince II practitioner, I initiate and manage projects for UK and overseas stakeholders and lead training/workshops in GIS and the use of 3D geospatial data. I innovate new technical solutions using geospatial data, particularly working in urban environments looking at harnessing geological resources (e.g. ground sourced heat) or mitigating against geological hazards (e.g. tunnelling projects such as the Lower Thames Crossing, Haweswater Aqueduct and CrossRail). As a lead practitioner in the use of GIS, 3D geological modelling and visualisation software at the British Geological Survey (BGS), I innovate in these areas (e.g. mapping and modelling of anthropogenic deposits) and demonstrate BGS capability using these software to a broad range of stakeholders using Virtual Reality and immersive 3D Visualisation Suites.


Geospatial Data Specialist, British Geological Survey

Steve is an experienced geoscientist and 3D geological modeller with 13 years’ experience at the

British Geological Survey, working with geological data, borehole information, 3D modelling and

visualisation software.  With an ethos of encouraging sharing of data he is working closely with

stakeholders to encourage the sharing of data via initiatives such as the Dig-To-Share project, aimed

at improving links between industry and BGS in the sharing and dissemination of subsurface data.

The ultimate goal is to better embed geology in the GI/SI and other planning processes. Steve is also

a Lego enthusiast and a general data tinkerer on all levels.


Director, PA Welburn Ltd

Pamela Welburn, since starting her own consultancy business in January 2018, has continued to focus on delivering integrated, practical, combined geotechnical and geo-environmental advice to the construction industry.  A Chartered Geologist with over 22 years’ experience in the contaminated land sector where Pamela has interpreted and translated data for a variety of professionals including developers, consultants, contractors, quantity surveyors, and project managers; achieving not only successful regulatory outcomes but helping achieve commercial success by being able  ‘talk the language’ of these different professionals. 


Formally Pamela was a technical expert at Arcadis focusing on solving the most challenging environmental and ground related problems which culminated in three projects being recognised as Brownfield Briefing Award-winning projects. During this time Pamela was the lead author on CIRIA C716 on remediating and mitigating risks from VOCs. Pamela has continued her involvement with CIRIA and is a member of the project steering group for the publication currently under development for retrofitting gas protection measures.


Technical Director, Site Evaluation & Restoration, Arcadis

Tony is a Chartered Scientist, Professional Engineer and brownfield risk assessment, remediation and risk management expert with over 20 years’ experience in Canada and the UK.  Tony is a technical director at Arcadis where his primary responsibilities are the technical quality of contaminated land projects and he is currently the geoenvironmental lead for Lower Thames Crossing. He is a keen advocate of the utilisation of emerging digital techniques to support the development of conceptual site models and facilitate robust ground investigation design as well as using technology to collate, manage and inform stakeholders about the risks associated with contamination issues across a scheme.

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