Redmore Environmental was instructed to undertake an Air Quality Assessment in support of a residential development on land to the west of Close Lane, Alsager, Cheshire. The proposals included 50 residential dwellings and associated infrastructure to be constructed as Phase 2 of the site.
Cheshire Air Quality Assessment
Given the size of the development, the proposals had the potential to cause air quality impacts during both the construction and operational phases. Further to this, the proposals were located close to the M6 motorway, which could lead to exposure of future residents to poor air quality. It was therefore necessary to determine pollutant levels at the proposed site, assess impacts from the development and ensure that air quality was appropriate for future residents.
Large developments can cause dust emissions during construction. The impacts were considered in accordance with the relevant Institute of Air Quality Management guidance. Following the analysis, it was concluded that good practice control measures would reduce dust emissions to an acceptable level during construction.
Flow of traffic to and from the site can lead to an increase in pollutant levels at sensitive locations. These impacts were analysed by comparing the anticipated trip generation from the development with the relevant screening criteria. This indicated effects were unlikely to be significant and mitigation was not necessary.
A dispersion modelling assessment was carried out using ADMS-Roads in order to assess whether or not residents would be exposed to unacceptably poor air quality. The results revealed that pollutant concentrations across the site would fall within safe standards, based on government guidance. The report produced by Redmore Environmental was subsequently used to support a planning application for the development.
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