Hirwaun Plume Plotter
Hirwaun incinerator plume
at 07:50 on Sat, 18 May 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: 941 ng/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 µg941 ng(15%)
Sulphur dioxide2.79 µg236 ng(8%)
Carbon monoxide97.9 ng1.18 µg(1202%)
Particulates10.3 µg118 ng(1%)
TOC162 ng236 ng(146%)
Hydrogen chloride185 ng118 ng(64%)
Hydrogen flourideN/A23.6 ng
Cadmium and Thallium285 pg471 pg(165%)
Mercury21.7 pg471 pg(2172%)
Other metals25 ng7.06 ng(28%)
Ammonia1.24 µg11.8 ng(1%)
Dioxins and furans4.58 fg0.941 fg(21%)
PCBs22.2 pg1.41 fg(0%)
PAHs252 pg23.6 pg(9%)
Display parameters
Zoom:
+
Area:
Centred
Downwind
Emissions:
Planned
Latest weather data
Wind 4.7 mph (2.1 m/s) from 310°. Cloud cover: 0/10. Temp: 13°C. Pressure: 1014 mb. Data from Cardiff airport at 07:50.