Tillämpning av SCORE-metoden på f.d BT Kemis södra område

Sammanfattning: Remediation of contaminated sites may cause adverse negative effects like usage of non-renewable resources, high monetary cost, air emissions and an increased risk of accidents. Therefore, interest in sustainable remediation has increased in recent years. The aim with sustainable remediation is to integrate a holistic perspective on remedial projects and find the alternative that is considered best in the long term. A sustainability assessment is characterized of a wide variety of information and uncertainties though. One suitable method to handle sustainability assessment is multi criteria analysis (MCA). A MCA is a decision support tool which assesses to which extent different alternatives fulfils a set of performance criteria. This Master´s thesis has applied SCORE, a new MCA, to evaluate three remedial options proposed for the remediation of the southern part of the former BT Kemi in order to investigate which most favors sustainable development. The results showed that alternative 2 - containment of the contaminants within a barrier at site - most favoured sustainability. But all the results were associated with high uncertainties and no alternative were statistically significant better than the others. This report concludes that the main strength of the method lies in its ability to handle both quantitative and qualitative data in a structured way while it at the same time can deal with input uncertainties. Another positive aspect with the method is that decision makers and stakeholders openly discuss aspects that are often ignored in remediation projects. To develop the SCORE-method further it is recommended that all statistical calculations are integrated in the SCORE software which is under development. Better guidance on how to conduct the cost benefit analysis would also benefit the method.