Hence, this plot summarises the cost effectiveness of all alternatives with respect to each other for a certain site. E.g. in the figure below, alternative A1 scores best on effectiveness and A3 on costs. The plots highlight the trade offs among the alternatives, such as the price paid for preventing pollution spreading. In addition, it gives an overview on which the choice of the most cost effective alternative can be based. Env.' means 'environmental'.
Case studies The methodology described here has been tested on several case studies.
The performance table gives a particularly clear insight into the advantages and disadvantages of the alternatives investigated. The performance table provides good arguments for choosing the most cost effective alternative. The weights of the aspects were varied, in one case study. It appeared to be difficult to gather all information for quantifying the aspects. The remediation investigations, which summarise the expected results of the alternatives, often provide insufficient information, especially for relatively small sites.