Details of Buttington Plume Plotter

This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Buttington version of Plume Plotter.

Stacks and buildings

Building measurements are taken from [1].

The image below shows the layout of the stack and buildings modelled. North is at the top; colours and numbers indicate the height of the buildings and the stack:

Stack measurements

These are taken from [1]:

The following values are used for albedo, Bowen ratio and roughness length. Albedo and roughness length are as specified in [1]:

Emissions

The emission rates of pollutants are taken from [1]:

PollutantEmission rate
per second
Oxides of nitrogen3.12 g
Sulphur dioxide1.301 g
Carbon monoxide1.301 g
Particulates260 mg
VOCs260 mg
Hydrogen chloride260 mg
Hydrogen flouride26 mg
Cadmium and Thallium1.3 mg
Mercury1.3 mg
Other metals13 mg
Ammonia260 mg
Dioxins and furans1.04 ng
PAHs2.6 μg
PCBs260 ng

Background levels

The background levels of pollutants are taken from [1]:

PollutantBackground
concentration per m3
Oxides of nitrogen18.87 μg
Sulphur dioxideN/A
Carbon monoxideN/A
ParticulatesN/A
VOCs170 ng
Hydrogen chlorideN/A
Hydrogen flourideN/A
Cadmium and ThalliumN/A
MercuryN/A
Other metalsN/A
AmmoniaN/A
Dioxins and furansN/A
PAHsN/A
PCBsN/A

Weather data

Weather data is taken from METAR reports from a local airport: Shawbury.

Upper air data is the latest reported by the Nottingham upper air station.

References

1. Environmental Statement: Chapter 6 - Air Quality. ECL. August 2020.