Aiding Proposed Development in Air Quality Management Area (AQMA)


REC completed an Air Quality Assessment in support of a planning application for a large residential development off Garstang Road East in Poulton-le-Fylde.

Air Quality Management Area

Wyre Borough Council declared an Air Quality Management Area (AQMA) along Chapel Street in Poulton, approximately 1km west of the proposed development. The AQMA was designated due to exceedences of the annual mean Air Quality Limit Value (AQLV) for nitrogen dioxide (NO2). As such, there were concerns that traffic associated with the proposed development could have an adverse impact on the AQMA as well as at sensitive receptors in the vicinity of the proposed site.

Chapel Street AQMA is a narrow one-way street in the centre of Poulton, situated on a steep gradient and flanked by tall buildings. These particular conditions restrict air flow and were therefore included within the dispersion model to increase accuracy. The model was created using the software package ADMS-Roads in order to predict pollution concentrations across the site and throughout the AQMA.

Dispersion Modelling

The dispersion model predicted exceedences of the annual mean NO2 AQLV within the AQMA and other non-sensitive areas of the local highway network. However, pollutant concentrations were not significantly increased as a result of the development traffic flows.

Predicted pollutant concentrations across the proposed development were below the NO2 annual mean AQLV and therefore the site was considered suitable for residential use without the implementation of mitigation strategies.

Due to the close proximity of the AQMA, transport related mitigation measures were suggested. These included the implementation of a travel plan, increasing awareness of public transport and promoting walking and cycling within and around the town centre.