Details of Corby Plume Plotter

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

Stacks and buildings

Building measurements are taken from [1]. This image shows the layout of the stack and buildings modelled:

Stack measurements

All of these are taken from [1]:

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

Emissions

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

Unfortunately this document [1] is inconsistent: Table 6.1 states that the normalised flow rate is 14.327 μg/m3 but Table 6.2 shows it to be 7.34 μg/m3. We have (arbitrarily) assumed the higher value (14.327 μg/m3), which gives the following emission rates:

PollutantEmission rate
per second
Oxides of nitrogen2.865 g
Particulates143.1 mg
Sulphur dioxide715 mg
Carbon monoxide715 mg
Hydrogen chloride143.1 mg
Hydrogen flouride14.31 mg
Cadmium and thallium715 μg
Mercury715 μg
Other metals7.15 mg
Ammonia143.1 mg
VOCs143.1 mg
PAHs14.31 μg
Dioxins and furans1.431 ng

Background levels

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

PollutantBackground
concentration per m3
Oxides of nitrogen17.58 μg
Particulates15.81 μg
Sulphur dioxide2.26 μg
Carbon monoxide269 μg
Hydrogen chloride257 ng
Hydrogen flourideN/A
Cadmium and thallium90 pg
Mercury1.314 ng
Other metals9.231 ng
Ammonia810 ng
VOCs359 ng
PAHs258 pg
Dioxins and furans2.49 fg

Weather data

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

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

References

1. RENEWABLE FUEL PRODUCTION & RECYCLING FACILITY, WITH ENERGY RECOVERY, GRETTON BROOK ROAD, CORBY: AIR QUALITY ASSESSMENT. Smith Grant LLP. August 2013.