Air Quality Environmental Impact Assessment – Poultry Farm, Swansea


Kittle Hill Farm, Swansea

REC’s Air Quality Consultants recently undertook an Air Quality Environmental Impact Assessment in support of the proposed extension to the number of poultry places at Kittle Hill Farm, Swansea.

Stonegate Ltd submitted a planning application to increase the capacity of Kittle Hill Poultry Farm from 295,680 to 400,000 birds. As the number of birds exceeded 60,000, an Environmental Impact Assessment was requested by the City and County of Swansea Council. REC’s Air Quality Consultants were therefore instructed to provide the Air Quality Assessment chapter, which considered potential effects associated with increased emissions from the proposals.

Air Quality Assessment Chapter

Potential impacts during the operation of a poultry farm were identified from additional ammonia, odour and dust emissions associated with poultry breeding. These have the potential to cause air quality impacts at ecological receptors, as well human receptors.

Dispersion Modelling Assessment

Atmospheric emissions of ammonia and odour were assessed through a dispersion modelling assessment. The Air Quality Assessment took account of three separate scenarios to provide consideration of different pollutant emission rates and dispersion patterns originated from the facility prior to and after redevelopment. Predicted ammonia concentrations and nitrogen deposition rates were then compared with the relevant Environment Agency criteria in order to determine the potential for impacts.

Although the results of the dispersion modelling assessment showed an increase in pollutant concentrations as a result of operational phase ammonia and odour emissions at a small number of sensitive locations, impacts were not considered to be significant.

Potential sources of fugitive dust, control measures, prevailing meteorological conditions and receptor locations were also considered in order to predict the likelihood of impacts at ecological and human receptors. This indicated that subject to implementation of relevant site management measures, potential impacts were not predicted to be significant.

Conclusions from Air Quality Assessment EIA

REC’s comprehensive Air Quality Assessment also identified potential emission reduction measures, which were based on Environment Agency guidance, and adapted for the proposals.