Air pollution - targeted measures (2)

MQT on 2010-09-15
Session date: 
September 15, 2010
Question By: 
Mike Tuffrey
Liberal Democrats
Asked Of: 
The Mayor


Your Air Quality Strategy proposes targeted measures at locations at risk of breaking the PM10 limit value such as Victoria Embankment through Upper Thames Street to Tower Hill. What has been done to: a) quantify the aggregate impact of such measures at each such location? b) test that these targeted measures will have sufficient impact to bring PM10 within the limit values at each location? c) the NO2 hourly limit value would be exceeded in some places in 2011 having been attained at them in 2010 d) investigate whether measures need to be taken at other hotspots?


Answer for Air pollution - targeted measures (2)

Answer for Air pollution - targeted measures (2)

Answered By: 
The Mayor

Modelling shows that all of London is expected to meet PM10 limit values in 2011. Nevertheless, my draft Air Quality Strategy includes local measures that will deliver air quality improvements at the small number of locations in central London that are at risk of not meeting the PM10 limit values. These measures, including the application of dust suppressants will start to be implemented from October 2010. Evidence from other cities suggests that reductions of 10% to 20% in PM10 concentrations can be expected at these locations. It is likely that some of these measures will be applied in other locations depending on their effectiveness.

The targeted measures are designed to tackle the problem of PM10, not NO2 which is a problem across a much wider area of London. However, some of the proposed measures, such as reducing vehicle idling, will also reduce emissions of NOx.