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BAT is defined in Section 5(1) of the EPA Act 1992, as amended as the “the most effective and advanced stage in the development of an activity and its methods of operation, which indicate the practical suitability of particular techniques for providing, in principle, the basis for emission limit values, and in the case of an industrial emissions directive activity other additional licence conditions, designed to prevent or eliminate or, where that is not practicable, generally to reduce an emission and its impact on the environment as a whole”, where:
'best', in relation to techniques, means the most effective in achieving a high general level of protection of the environment as a whole;
'available techniques' means those techniques developed on a scale which allows implementation in the relevant class of activity specified in the First Schedule to the EPA Act 1992, as amended, under economically and technically viable conditions, taking into consideration the costs and advantages, whether or not the techniques are used or produced within the State, as long as they are reasonably accessible to the person carrying on the activity;
'techniques' includes both the technology used and the way in which the installation is designed, built, managed, maintained, operated and decommissioned.
In the absence of BAT conclusions, installations should continue to have regard to BREF and national Best Available Techniques Guidance notes available on the EPA website:
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