This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Washington version of Plume Plotter.
Building measurements are taken from drawings in the planning application (same link as  and ). We have modelled the incinerator buildings in much more detail than . This image shows the layout of the stack and buildings modelled. North is at the top; colours and numbers indicate the height of buildings and the stack:
All of these are taken from :
The following values are used for albedo, Bowen ratio and roughness length. Roughness length is as specified in :
The emission rates of pollutants are taken from :
|Oxides of nitrogen||10.06 g|
|Sulphur dioxide||2.51 g|
|Carbon Monoxide||2.51 g|
|Hydrogen chloride||503 mg|
|Hydrogen flouride||50.3 mg|
|Cadmium and thallium||2.51 mg|
|Other metals||25.1 mg|
|Dioxins and furans||5.03 ng|
The background levels of pollutants are taken from . These are:
concentration per m3
|Oxides of nitrogen||19.6 μg|
|Sulphur dioxide||21.8 μg|
|Carbon Monoxide||169 μg|
|Cadmium and thallium||175 pg|
|Other metals||38.91 ng|
|Dioxins and furans||N/A|
Wind speed, wind direction, temperature, pressure, and solar radiation are the latest values reported by one of two weather stations. If a value is not available from the primary weather station it is obtained from the secondary weather station. (Some weather stations do not measure solar radiation at all.) The primary weather station is and the secondary weather station is .
Upper air data is the latest reported by the Albemarle upper air station.
1. Environmental Statement: Chapter 5 - Air Quality. Air Quality Consultants Ltd. October 2017.
2. Environmental Statement: Appendix 5 - Air Quality Appendices: Sunderland REC. Air Quality Consultants Ltd. October 2017.