Putting risks in perspective
The objectives for the megasite management are derived as the result of the risk assessment. This is done regarding groundwater and other receptors located both inside and outside the Risk Management Zone (RMZ).
In terms of the risks to all identified receptors outside and inside the RMZ, its boundaries are re-adjusted according to the results of the risk assessment (see figure below). After the approval of stakeholders the evaluation and selection of the risk reduction measures at a cluster level should be carried out.
The necessity of the risk reduction measures regarding the protection of receptors can be assessed based on planes of compliance and site-specific threshold values, which are determined for each receptor. Measures are required if the receptor-specific local threshold values are not complied with.
Output
As a result of this step the final risk clusters and RMZ boundaries are defined for the megasite.
