Details of Rookery Plume Plotter

This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Rookery 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. The value of roughness length is as specified in [1]:

Emissions

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

PollutantEmission rate
per second
Oxides of nitrogen25.86 g
Sulphur dioxide6.465 g
Carbon monoxide6.465 g
Particulates1.293 g
Hydrogen chloride1.293 g
TOC1.293 g
Hydrogen flouride129.3 mg
Ammonia1.293 g
Cadmium and thallium6.465 mg
Mercury6.465 mg
Other metals64.65 mg
PaHs13.58 μg
Dioxins and furans12.93 ng
PCBs646.5 μg

Background levels

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

PollutantBackground
concentration per m3
Oxides of nitrogen23.55 μg
Sulphur dioxide4.26 μg
Carbon monoxide332 μg
Particulates19.8 μg
Hydrogen chloride710 ng
TOC670 ng
Hydrogen flouride2.35 μg
Ammonia2.87 μg
Cadmium and thallium120 pg
Mercury880 pg
Other metals18.11 ng
PaHs1.119 ng
Dioxins and furans33 fg
PCBs119.5 ng

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 and the secondary weather station is .

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

References

1. COVANTA -- ROOKERY SOUTH ENERGY RECOVERY FACILITY -- AIR QUALITY ASSESSMENT. Fichtner. October 2016.