During 2006, the Sutton 5 monitoring site exceeded the Air Quality Strategy (AQS) Objective for PM₁₀. The monitoring site is located on a residential section of Beddington Lane, north of several waste management businesses.

Source apportionment of PM₁₀ at the site showed that 8 µgm-3 TEOM *1.3 or 22 % of the PM₁₀ measured at the site came from sources that were not expected at typical roadside locations. In the absence of these sources the site would have achieved the daily mean AQS Objective / EU Limit Value during 2006.

Source apportionment results for the site were combined with the results from studies of PM₁₀ around waste sites at other locations to develop an emissions profile for Beddington Lane which was in turn used in dispersion modelling.

Report co-author Stephen Hedley said, "Our previous studies of PM₁₀ around waste sites have enabled us to understand the PM₁₀ at the individual monitoring locations. For the first time we’ve combined these results with data from the London Atmospheric Emissions Inventory to model the PM₁₀ concentrations as they reduce with distance from waste sites. We found that the PM₁₀ sources extended the area that exceeded the AQS objective by up to 1.8km along roads."

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Item date 31/08/2007