Dispersion Modelling Assessment – Riverside Transfer Station, Fleetwood

19.12.15

EC was commissioned to undertake a Dispersion Modelling Assessment of potential atmospheric emissions from a proposed energy recovery facility at Riverside Transfer Station, Fleetwood. Combustion gases produced by the process have the potential to cause increases in ground level pollutant concentrations and therefore a Dispersion Modelling Assessment was required to quantify impacts in the vicinity of the site.

The baseline work included the identification of all ecological designations within 10km of the site. This included Morecambe Bay Special Area of Conservation, Special Protection Area and Ramsar Site, Wyre Estuary Site of Special Scientific Interest (SSSI) and Lune Estuary SSSI. The relevant habitat and associated critical load was subsequently determined for each location for use in the assessment. Existing pollution concentrations and deposition rates were also defined from local pollution monitoring results and public data sources.

Dispersion modelling of all pollutants controlled under the Waste Incineration Directive was undertaken using ADMS4 and impacts at both human and ecological receptors quantified. The model included consideration of building effects and five years of meteorological data were assessed to provide analysis of differences in predicted concentrations. Other sources of uncertainty were also identified and accounted for through the use of robust assumptions where necessary.

The model outputs indicated that there would not be any exceedences of the relevant air quality standards as a result of emissions from the facility.

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