Royal HaskoningDHV has an established reputation for developing innovative and cost-effective solutions for all aspects of contaminated land investigation and brownfield remediation.
We draw on expertise in a comprehensive range of brownfield services which stretches back over 20 years both nationally and internationally.
Our services include all stages of contaminated land investigation and remediation; namely
- Phase 1 - Preliminary Risk Assessment (PRA) Desk Study Report;
- Phase 2 - Intrusive Ground Investigation; and
- Phase 3 – Remediation.
For further details, please see below.
Phase 1 - Preliminary Risk Assessment (PRA) Desk Study Report
We support our Client’s by tailoring a the scope of a Phase 1 to meet their needs. Typically, a PRA is the first step in the phase approach of brownfield development and are required to comply with planning conditions; to assess environmental liability associated with the acquisition or divestment of any property; or to establish the current environmental status and liabilities associated with a development sites portfolio.
Phase 2 – Intrusive Ground Investigation
Royal HaskoningDHV has considerable experience in the design, procurement and supervision of ground investigations in accordance with current best practice, including:
- Soil, groundwater and sediment sampling
- Soil logging
- Ground gas and vapour monitoring surveys
- Hydrogeological assessment
- Scheduling & assessment of chemical analysis
- Waste classification
- Preparation of tender documentation and tender evaluation
- CDM compliant H&S plans, risk assessments and method statements
- Factual and interpretative reporting
- Regulatory liaison
Quantitative Risk Assessment
Human health and hydrogeological quantitative risk assessment are at the heart of contaminated land management. We aim to develop and implement risk-based and cost-effective solutions for all our projects. Highly qualified professionals in our Risk Assessment Team can ensure that projects undertaken for our clients benefit from full compliance with regulatory guidance such as the Environment Agency’s Land Contamination Risk Management (LCRM) guidance.
Our team has experience in the use of a range of detailed quantitative risk assessment models including CLEA for human health risk assessment, the Johnson and Ettinger model to assess vapour risks, Remedial Targets Methodology for assessing risks to controlled waters and the Wilson approach to vapour risk assessment for UK building types. Our robust human health and controlled waters risk assessment ensures remediation works are appropriately proportionate to the risks presented to receptors at sites.
Phase 3 - Remediation
Royal HaskoningDHV has developed remedial strategies involving the treatment of soil and groundwater for both large and small scale projects both internationally and within the UK using varied remediation technologies.
The types of service we can offer are:
- remediation options appraisal
- development of remediation strategies
- feasibility studies pilot scale schemes
- cost benefit analysis
- regulatory liaison
- permitting for use of waste, abstraction licensing, and discharges to surface water
- supervision and monitoring offering our service as verification engineer
- verification reporting
We have well established relationships with UK based analytical laboratories, ground investigation and drilling contractors and remediation contractors.
We are members of the Association of Geotechnical and Geoenvironmental Specialists (AGS), Society of Brownfield Risk Assessment (SoBRA), Environmental Industries Commission (EIC), Institute of Environmental Management and Assessment (IEMA) and a number of our team are fellows of the Geological Society. Being part of these professional bodies allows our team to keep up to date with relevant guidance and technologies.
Our human health technical specialist is part of the collaborative industry initiative with the Soil and Groundwater Technology Association (SAGTA), Contaminated Land: Applications in Real Environments (CL: AIRE) and SoBRA developing 20 new ‘category 4 screening levels’ (C4SLs) for a range of contaminants for use in human health risk assessment.
We are also part of a the IEMA land and soils working group which is working towards better sustainable use of soils on development sites.