Hirwaun Plume Plotter
Hirwaun incinerator plume
at 04:50 on Sun, 06 Oct 2024
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The map shows the (predicted) current state of pollution from the proposed incinerator at Fifth Avenue, Hirwaun Industrial Estate.

The red line shows wind direction. Green rings show distance (km). Colours show concentration of oxides of nitrogen at ground level. Maximum: 1.14 µg/m3. This is the concentration at the location that is most polluted by the plume.

Breakdown of pollutants at most polluted location (green = background, red = added by plume):

Oxides of nitrogen
Sulphur dioxide
Carbon monoxide
Particulates
TOC
Hydrogen chloride
Cadmium and Thallium
Mercury
Other metals
Ammonia
Dioxins and furans
PCBs
PAHs

Oxides of nitrogen
Sulphur dioxide
Carbon monoxide
Particulates
TOC
Hydrogen chloride
Cadmium and Thallium
Mercury
Other metals
Ammonia
Dioxins and furans
PCBs
PAHs

Concentration
per m3
Background
(annual mean)
Plume
Oxides of nitrogen6.16 µg1.14 µg(18%)
Sulphur dioxide2.79 µg285 ng(10%)
Carbon monoxide97.9 ng1.42 µg(1453%)
Particulates10.3 µg142 ng(1%)
TOC162 ng285 ng(176%)
Hydrogen chloride185 ng142 ng(77%)
Hydrogen flourideN/A28.5 ng
Cadmium and Thallium285 pg570 pg(200%)
Mercury21.7 pg570 pg(2625%)
Other metals25 ng8.53 ng(34%)
Ammonia1.24 µg14.2 ng(1%)
Dioxins and furans4.58 fg1.14 fg(25%)
PCBs22.2 pg1.7 fg(0%)
PAHs252 pg28.5 pg(11%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 15 mph (6.7 m/s) from 130°. Cloud cover: 10/10. Temp: 13°C. Pressure: 1000 mb. Data from Cardiff airport at 04:50.