The UK adopts a risk-based approach to the assessment of contaminated land regeneration and management. This means we are able to develop cost-effective and sustainable solutions for you.
A risk assessment is central to the interpretation of a site investigation’s findings, and the process can be either qualitative or quantitative depending on the amount of information available.
Several different levels, or tiers, of risk assessment exist. The purpose of a risk assessment is to determine whether significant pollution linkages exist on the site in question.
If significant pollution linkages are found to exist during generic assessments, more detailed site-specific assessments may be required.
For example, a risk assessment could involve:
• A straightforward comparison with generic assessment criteria, such as concentrations of a specific metal when compared to idealised values
• A comparison against site-specific values, generated through modelling specific on-site conditions
• Measurement of parameters – estimated or assumed in earlier tiers through analysis and monitoring – in order to generate accurate site-specific values for exposure
If pollution linkages are deemed significant following a risk assessment(s), remedial work may be required by way of mitigation.