The Glos (UBB+Smiths) plume plotter shows a prediction of the current amount of air pollution (at ground level) caused by emissions from the two incinerators at Javelin Park (UBB) and Moreton Valence (Smiths).

Plume Plotter predicts this fallout using AERMOD, which is one of the most widely used modelling systems for air pollution. It uses the latest local weather conditions and upper air data, which are obtained in real time. Since the incinerators are not yet polluting, Plume Plotter does not use real-time information about their emissions. Instead, it assumes that they operate continuously (8760 hours per year) and emit pollutants at a constant rate. The emission rates assumed are the long-term planned emission rates that were specified by the incinerator developers in their planning application; the other parameters (e.g. emission velocity and temperature) used are also taken directly from the planning application.

This is a combination of the two existing plume plotters. In order to combine them, we have assumed the IED limit of 200 μg/m3 for emissions of oxides of nitrogen for both incinerators. This limit is assumed for almost all planned UK incinerators. The Smiths incinerator at Moreton Valence claims to emit only 70 μg/m3 of oxides of nitrogen; this lower emission rate is used in the separate Smiths plume plotter.

Plume Plotter's model takes account of the real terrain in the vicinity of the incinerator and the shape of the incinerator buildings.

For detailed information, please see the separate web pages for the two incinerators.

Disclaimer: While we believe that our predictions are as accurate as possible using the resources and information available to us, we make no claims or guarantees made about the correctness of the information presented on this website.

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