Air quality reviews
This page is about the way in which we monitor air quality in the borough.
We have a duty by law to review and assess air quality in the borough on a regular basis, to ensure that the various pollutants are below their respective limit values set by the Government.
Updating and Screening Assessment exercise
This review is called an Updating and Screening Assessment exercise and examines what, if any, factors have changed in the borough since the last assessment that might have led to a deterioration in air quality (e.g. new roads, increased traffic flows on existing roads, new industry etc.).
If this assessment identifies any areas where there are potential breaches of the air quality standards, then a detailed assessment must be undertaken of the area(s).
If after this review is completed the results still indicate that pollution levels are likely to exceed government limits local authorities declare Air Quality Management Areas.
An Action Plan is then produced which details how the Council will go about reducing the levels of that pollutant.
Levels below government limits
In Reigate and Banstead, we found that air pollution in most areas of the borough is well below the government limits for all pollutants.
The pollutant identified as a potential problem in certain areas of the borough was Nitrogen Dioxide (NO2), and following computer modelling and subsequent monitoring the council has nine Air Quality Management Areas.
Air Quality Management Areas
- Along the M25 (AQMA Order 1 and Map PDF)
- An area of south Horley near to Gatwick Airport (AQMA Order 3 and Map PDF)
- An individual property on the A217 near Blackhorse Lane (AQMA Order 6 and Map PDF)
- Junction of the A2022, A240, B291 (Drift Bridge) in Banstead (AQMA Order 8 PDF)
- Reigate High Street, including sections of Church Street, Bell Street, West Street, and London Road (AQMA Order 9 PDF). Note: This replaces order number 7 which covered only Reigate High Street, and the section of Church Street between the High Street and Bancroft Road.
- A23 Merstham High Street (AQMA Order 10 PDF)
- A217 Reigate Hill (AQMA Order 11 PDF)
- A23 / Redhill Town Centre (AQMA Order 12 PDF)
- A23 Hooley (AQMA Order 13 PDF)
The air quality management areas covering the M23 to the south of the M25, A217 / Rushworth Road, and the A23 near Dean Lane, orders 2, 4, and 5 respectively, were revoked on 4th September 2013 (Revocation order PDF) as the air quality standards for nitrogen dioxide are now being met at these sites.
- Tell me about Air quality pollutants and their limit values.
The following are available in PDF on the reports download page:
- Stage 1 - Review and Assessment of Air Quality
- Stage 2 - Review and Assessment of Air Quality
- Stage 3 - Air Quality Review and Assessment - N02 & PM10
- Stage 4 - Further Assessment of Air Quality (M25, A217, A23, northern M23)
- Stage 4 - Further Assessment of Air Quality (Horley, southern M23)
- Stage 4 - Further Assessment of the Horley Air Quality Management Area - 2010 Addendum
- Action Plan for the M25 Air Quality Management Area
- Updating and Screening Assessment 2003
- Detailed assessment of Rushworth Road 2004
- Progress Report 2005
- Detailed Assessment of Drift Bridge (A240 / A2022) - August 2006
- Further Assessment of Drift Bridge (A240 / A2022) - July 2007
Further Assessment of Reigate High Street and A217 (Blackhorse Lane) - November 2006
- Updating and Screening Assessment 2006
- Detailed Assessment of A23 Merstham 2007
Further Assessment of A23 Merstham 2008
Progress Report 2008
- Updating and Screening Assessment 2009
- Detailed Assessment of Reigate Hill and Redhill Town Centre 2010
- Further Assessment of Reigate Hill 2011
Further Assessment of Redhill 2011
- Detailed Assessment of Hooley 2011
- Further Assessment of Hooley 2013
- Progress Report 2011
- Annual Status Report 2016
- Annual Status Report 2017
- Annual Status Report 2020
Research Work Supporting Current and Future Action Planning Measures
- Combining Instantaneous Vehicle Emission Calculations with Dispersion Modelling to Identify Options to Improve Air Quality at Drift Bridge (2014)
- Surrey Wide Air Quality Modelling - 2017 Model year (2020)
- Reigate and Banstead Borough Modelling - 2017 Model year (2020)