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Quantification of landfill emissions to air: a case study of the Ano Liosia landfill site in the greater Athens area

Department of Environmental Engineering, Technical University of Crete, Chania, Greece

Mihalis Lazaridis

Department of Environmental Engineering, Technical University of Crete, Chania, Greece, lazaridi{at}mred.tuc.gr

Fugitive pollutant emissions from municipal solid waste landfills have the potential to cause annoyance and health impacts in the surrounding residential areas. The overall objective of this research was to perform an assessment of fugitive pollutant emissions and a dispersion analysis down-wind of a specific landfill site. The study was performed at the closed Ano Liosia landfill site which is located in the greater Athens area. The human exposure from priority to health-risk pollutants emitted from landfill, such as vinyl chloride and benzene, was estimated by the landfill gas emission LandGEM 2.01 software combined with the atmospheric long-term dispersion model ISC3-LT. The emission and meteorological conditions under which the models were applied referred to the worst-case scenario. This scenario was used for the evaluation of the maximum human exposure assessed beyond the Ano Liosia landfill towards the residential areas. The above scenario provides the minimum down-wind distance of the health-risk zone which is calculated to be equal to 1.5 km from the landfill. Within this distance the assessed air pollutant concentration for several air pollutants was significantly above the World Health Organization reference lifetime exposure health criteria. Finally, the applied methodology was used in the Ano Iiosia landfill, where atmospheric concentrations of pollutants measured in the field were compared with model predictions.

Key Words: Landfill gas emission • dispersion • exposure • vinyl chloride • benzene • wmr 805-9

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