Benzo[a]pyrene data in London
Where in London the annual mean concentration of benzo[a]pyrene exceeded, exceeds or is projected to exceed the national objective.
Applies to England
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Benzo[a]pyrene EIRs: where in London the annual mean concentration of benzo[a]pyrene exceeded, exceeds or is projected to exceed the national objective of 0.25ng/cubic metre as an annual mean in the national air quality strategy.