Details of Cornwall Plume Plotter

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

Stack measurements

All of these are taken from [1]:

Emissions

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

PollutantEmission rate
per second
Oxides of nitrogen5.81 g
Sulphur dioxide780 mg
Carbon monoxide1.94 g
Particulates PM10388 mg
Hydrogen chloride388 mg
Hydrogen flouride39 mg
VOCs388 mg
Ammonia190 mg
Mercury1.94 mg
Cadmium and thallium1.94 mg
Other metals19.4 mg
Dioxins and furans3.88 ng

Background levels

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

PollutantBackground
concentration per m3
Oxides of nitrogen7.5 μg
Sulphur dioxide8.8 μg
Carbon monoxide96 μg
Particulates PM1023 μg
Hydrogen chloride1.7 μg
Hydrogen flouride1 μg
VOCsN/A
AmmoniaN/A
Mercury130 pg
Cadmium and thallium90 pg
Other metals49.74 ng
Dioxins and furans18.9 fg

Weather data

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 ICORNWAL13 and the secondary weather station is IPLYMOUT6.

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

References

1. Cornwall Energy Recovery Centre Planning Application ES Chapter 7: Air quality and climate. SITA Cornwall Limited.