Marksanering vid gamla handelsträdgårdar och plantskolor : En jämförelse av Sveriges kommuners efterbehandlingsarbete

Currently there are about 3 700 contaminated sites that used to host commercial- and nursery gardens. Mainly due to the extensive use of pesticides at these sites a great part of them now pose a significant environmental- and health risk. This study aimed to compare how Swedish municipalities has worked with the clean-up of contaminated soil at these kinds of sites. This has been done by sending out a questionnaire to the municipality’s environmental management office. This study’s results have indicated that the most used remediation technology was excavation. The methods relative speed and simplicity was the usual motivation behind this choice. The results also showed that mostly Swedish guideline values where used in the remediation process. Furthermore, the most common remediation goal at these sites was that the remediated soil would live up to the Swedish environmental protection agency’s guideline values for sensitive land usage. The most common answer regarding why their remediation goal was set was because of the planned or present land usage at the site. The most common method for initial risk assessment was the comparison of contamination levels from soil samples to relevant guideline values or based on previous risk classification. Finally, the results showed that in most cases where remedial action had been taken, contaminants had been left in the soil. The most common reason for this was because the remaining pollution levels did not exceed the guideline values. For the most part, Swedish municipalities have a coherent way of working with these problems