At the beginning of the countermeasure evaluation, the user has to choose one of four pre-set radionuclide deposition scenarios and one of seven farm types. This produces a list of basically suitable countermeasures, selected by the developers of the software as appropriate in terms of the required radiological effectiveness and general suitability for the farm type. To determine the specific suitability of each countermeasure for the land being assessed, the user has to provide information on environmental and agricultural conditions, which is compared with a pre-determined set of thresholds. Once all limiting factors have been checked, the suitable countermeasures can be evaluated in terms of their potential impacts on water, soil, air and landscape quality, biodiversity, animal welfare and agricultural product quantity and quality. 

Ideal Point Analysis, a method for multicriteria decision making has been implemented to allow a formal comparison of the selected countermeasures with the option of applying user-defined preferences. This method permits the user to define the ideal objectives for each of nine assessment criteria and to apply weighting factors to each of these. The degree of compensation between poor performance on one or more criteria and good performance on others can also be chosen. The final output is a list of countermeasures ranked from best to worst with respect to their environmental and agricultural impacts taking into consideration any user-specified objectives and preferences. An economic assessment of countermeasures can be undertaken through a farm-level cost-benefit analysis. The user is given the opportunity to modify key economic variables to make the calculations as farm specific as possible.

Further details are available in the help files of the software and a report.