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The medium combustion plant requirements of the PPC regulations are designed to control emissions of sulphur dioxide (SO2), nitrogen oxides (NOx) and dust into the air from plants with a net rated thermal input of between 1 and 50 megawatts (MW), contributing to better air quality and reducing the potential risks to human health and the environment. If you operate your own boiler, engine or genera

Good air quality is essential for a good quality of life, helping to maintain human health and wellbeing, the climate, habitats and achieve sustainable economic development. This page/document provides guidance on the air emissions risk assessment required for a Pollution Prevention Control (PPC) Part A or Part B permit application or to vary an existing permit if air emissions are affected by the