Air quality monitoring - Cromwell Road

MQT on 2010-10-13
Session date: 
October 13, 2010
Question By: 
Mike Tuffrey
Liberal Democrats
Asked Of: 
The Mayor


In respect of the monitoring of concentrations of nitrogen dioxide and/or particulate matter by the London Air Quality Network in Cromwell Road: (i) why is no data reported from around May 2010 to around September 2010?; (ii) what investigations has the GLA Group made into the omission of this data?; (iii) what did the GLA Group know about the omission of this data and when?; (iv) what efforts have the GLA Group made to rectify it?; and (v) what consequences might there be for the ratification of calendar year 2010 data?


Answer for Air quality monitoring - Cromwell Road

Answer for Air quality monitoring - Cromwell Road

Answered By: 
The Mayor

The infrastructure and associated equipment for the Cromwell Road site is operated and maintained by Department for Environment, Food and Rural Affairs (Defra). In addition to Defra's equipment, including an NO2 monitor, Kensington and Chelsea own a particulate matter monitor within this station.

• Following your query, the GLA have determined that there was a fault at the site which affected the overall operation of the monitoring site. I understand the fault occurred in May, and was rectified in September, but that there has been a loss of data during the maintenance period.

• The GLA were not informed of any issues at the site which it does not operate.

• Defra and operators of the London Air Quality Network are responsible for the ratification from this site.