Contaminated land
Investigation strategy, risk assessment and pragmatic remediation advice for complex brownfield and operational sites.
- Soil
- Groundwater
- Risk
Independent environmental advisory
Clarity for
complex ground.
Independent contaminated land and PFAS consultancy for developers, landowners and environmental teams across the UK and Europe.
Core expertise
Technical depth.
Commercial focus.
Advice is only useful when it helps a project move. Lencois combines specialist technical understanding with the practical realities of programmes, permits, budgets and delivery.
PFAS
Specialist support from site characterisation and regulatory strategy through treatment selection, trials and full-scale delivery.
- Assessment
- Treatment
- Remediation
Permitting & delivery
Clear technical cases, regulator engagement and delivery plans for environmental, industrial and infrastructure projects.
- Permits
- Regulators
- Delivery
How we help
Senior input where it matters most.
Flexible support for an individual decision, a difficult workstream or the full technical path from early strategy to delivery.
Site strategy
Focused scopes for investigation, monitoring, risk assessment and remediation — built around the decision the project needs to make.
PFAS advisory
Independent review of data, conceptual site models, remediation options and emerging treatment technologies.
Environmental permitting
Applications, management plans and regulator-facing technical documents for complex construction and operational activities.
Remediation delivery
Procurement support, contractor challenge, technical assurance and practical troubleshooting from design to completion.
Programmes & proposals
Technical and commercial development for innovation programmes, collaborative bids and multi-partner environmental projects.
Our approach
Find the signal.
Make the decision.
Complex projects often have more information than clarity. The work is structured around three simple questions.
What is actually happening?
Build a defensible picture of the site, the risk and the constraints.
What matters to the project?
Separate material issues from noise and test the viable routes forward.
What should happen next?
Turn evidence into a clear technical, regulatory and commercial plan.
About Lencois
Independent advice, close to the work.
Lencois Consultancy is led by Jan De Vos, an environmental consultant with more than 15 years’ experience in contaminated land, PFAS, remediation and complex project development.
We work as an experienced extension of the client team: shaping the strategy, challenging assumptions, coordinating specialists and turning technical detail into decisions that can be explained and delivered.
Developers & landownersContractors & operatorsTechnology providersProject consortia
Start a conversation
Bring us the difficult part.
If you are working through a contaminated land, PFAS, permitting or remediation challenge, send a short outline of the site and the decision you need to make.
Email Jan