Action plans for remediating three heavily polluted areas, Serbia

In cooperation with the Regional Environment Centre for Central and Eastern Europe, NIRAS and Witteveen+Bos completed a project for the preparation of action plans for the remediation of three heavily polluted areas (hot spots) in Serbia.

The project was funded by the European Commission. The project started with the development of a stepwise system for ranking and classification of polluted sites based on actual risks for the specific Serbian situation with limited information available and high time constraints. This ranking system was validated and used for the assessment of heavily polluted hotspots in various Serbian river sheds. Out of the long list of 350 potentially contaminated sites, which were identified during the project inventory period, ten sites with the highest potential risks were selected using a multi-criteria analysis. In the next phase, the actual soil and groundwater quality of the selected sites was determined through on site investigations. This verification showed that each selected site was significantly polluted and that remediation was required. Finally three sites were selected for which a remediation plan was elaborated. In the last phase a Tier II Risk Assessment was performed for these 3 selected sites to determine the actual human and environmental risks. The most critical exposure pathways were determined by calculating the human and environmental exposure, using risk models (i.e. RBCA, RISC4 and Sanscrit). These risk analyses were used to design risk based and cost-effective remediation action plans. The final remediation approach is validated with trial tests.

The actual services provided during the project consisted of:

  • desk study and interviews to identify polluted sites
  • development of ranking and prioritisation tools
  • ranking and prioritising of sites
  • field investigations
  • preparation of environmental baseline reports
  • health and safety risk modelling
  • on-site feasibility tests