Methodology for selection of best available techniques (BAT) at the sector level

Best Available Techniques (BAT) are an essential reference element in the establishment of permit conditions for industrial installations in the European Union and elsewhere. BAT are the techniques with the lowest impact on the environment without compromising the economic health of the (industrial) enterprises concerned. BAT can be selected at the plant level but in many European regions, including the Flanders region of Belgium, BAT need to be determined at the sector level. BAT evaluation is usually done by expert judgement. Here, a methodology is described that allows expert judgement in a straightforward and transparent way. Central to this methodology are scores given on technical feasibility, on cross media environmental performances and on economic feasibility. The practicality of this approach was shown in 10 BAT studies of which 2 are discussed in more detail here.