Dept of Environmental Science and Technology

Dept of Environmental Science and Technology Imperial College London

Rm 4.33, Royal School of Mines Building South Kensington Campus Prince Consort Road London SW7 2BP Tel: +44 (0)207 594 6394 Fax: +44 (0) 207 594 9266

[email protected] Mobile Tel: +44 (0)771 218 6921 www.imperial.ac.uk

2018 年 4 月 27 日星期五

Alan Collis Traffic Management Division of Met Police Euston Traffic Garage 1-15 Drummond Crescent London NW1 1LY UK

Dear Sir,

Re: DAPPLE Air Pollution Project

May I introduce myself as one of the people organising the DAPPLE (Dispersion of Air Pollution and Penetration into the Local Environment) air pollution experiment. DAPPLE is a collaboration of 6 UK Universities, Transport for London and Westminster City Council. Our aim is to improve the understanding of pollution in and around road junctions. Contact with the Met Police Special Events Manager at Marylebone Police Station & the Traffic Wardens at Paddington Green Police Station have been made and they are generally happy with our plans. However, to minimise the risk of any false- alarms being raised, Nicola Cheetham and Eranga Gunawardena at TfL have also provided me with your contact details so that we may inform your team of the work to be undertaken on Marylebone Road.

The first measurement campaign of the DAPPLE project will be taking place during April and May 2003. The equipment on Marylebone Road is being deployed with the Camden contractors on Sunday 27th April. The field location is within approximately 250m of the intersection of Marylebone Road and Gloucester Place, London. We are particularly aware in the current climate of not wanting to cause a security alert or any alarm by the introduction of air pollution monitoring equipment/boxes of which you are not aware. At a basic level all of our equipment, the posts the equipment is mounted on and the boxes themselves will be labelled ‘DAPPLE Air Pollution Project’ with a contact number. Similarly all DAPPLE staff, who will be working out of a field base at Westminster City Council, will be wearing DAPPLE badges for identification and those conducting personal exposure measurements will have a high visibility jacket clearly marked ‘air pollution monitoring’.

There are 3 components to the measurement campaign:

1/ Background flow (ultrasonic anemometers and weather stations) and pollution (CO street boxes) – made using equipment mounted at height (above 3m) onto street furniture along Marylebone Road and Gloucester Place. The appropriate contacts at TfL (Eranga Gunawardena – Engineer for North Central Area Westminster) and Westminster Council (Steve Neville – Environmental Health Officer) are involved and helping to organise the safe deployment of these instruments.

2/ Personal Exposure – staff from Imperial College will be carrying hand held equipment for the measurement of pollution levels. Much of the equipment will be contained within rucksacks so as to be inconspicuous, with pedestrian, cyclists and vehicle routes conducted along Marylebone Road and parallel back streets. Up to 4 staff at any one time may be making such measurements. They will be working in pairs and wearing high visibility jackets marked ‘air pollution monitoring’ to avoid any suspicions.

3/ Tracer experiment – standard procedure for air pollution work using a discreet release of an inert tracer from a parked vehicle. This tracer is the monitored around the study site using air bag sampling. Again, approval from both Westminster City Council (Steve Neville – Environmental Health Officer) and

Imperial College of Science, Technology and Medicine . the Health & Safety Executive (Dr Adrian Bevan) has been gained. The location of the vehicle for this work will be York Street, but the exact dates and timing is dependant on weather conditions.

A location map and images of instrumentation can be provided, if helpful, once TfL and Westminster City Council have confirmed all sites. Similarly, full risk assessments and appropriate COSHH forms for the equipment and the measurement campaign are available. If you could confirm receipt of this letter I would be most grateful, and if you have any queries or would like to meet to discuss any of our plans further please do not hesitate to contact me.

Yours sincerely,

Dr Samantha Arnold (C.Geog) DAPPLE Fieldwork Manager Imperial College London

Imperial College of Science, Technology and Medicine