NOTE: The purple shaded area (57 dBA Leq 16h, relating to 2004) is where the Government
says the noise problem is - while the identified locations show where the complaints actually
came from - an area of approximately 37 x 60 miles! Note the spread of new locations across
the north of the area following the increase of flights during the intervening four years.
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Maps showing the official predictions of average annual Nitrogen Dioxide concentrations in 2030
Two Runways
Three Runways
Four Runways

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