Summary: This guidance note seeks to present general principles and suitable methods that may be used to assess and report on the impact of air emissions from EPA licensed industrial installations. The original version of this guidance note was published by the EPA in 2010. This document is a revision of that original that has been prepared to reflect the changes in regulatory and modelling practices that have occurred in the interim. The document is aimed at practitioners, and as such, assumes a general understanding of the theory of air dispersion modelling and the tools available to undertake an assessment.
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