Modeling human exposures to air pollution control (APC) residues released from landfills in England and Wales

Christopher J. A. Macleod, Raquel Duarte-Davidson, Bernard Fisher, Betty Ng, David Willey, Ji Ping Shi, Ian Martin, Gillian Drew, Simon Pollard

Research output: Contribution to journalArticlepeer-review

Abstract

Human exposures to air pollution control (APC) residues released from 6 landfills were modeled and assessed. Following a qualitative risk characterisation, direct and indirect exposures were quantified. Site-specific air dispersion modeling was conducted for PM10, PCDDs/PCDFs, Pb, Cd, As and CrVI concentrations at the closest residential points of exposure for 4 landfill sites accepting, in total, 75% w/w of the APC residues disposed of in 2000–2001 (UK). Inhalation risks, assessed by reference to air quality standards at residential exposure points, were assessed as insignificant. Preliminary modeling suggested that indirect exposures from PCDDs/PCDFs at the 95th percentile level for the site where APC deposition rates were highest could potentially exceed the tolerable daily soil intake (TDSI) but this warrants further study given the model limitations. These results offer an initial screen of the significance of potential risks from APC disposal, which is of value in addressing concerns about the uncertainty of potential risks to human health from bulk APC disposal at strategic locations.
Original languageEnglish
Pages (from-to)500-509
Number of pages10
JournalEnvironment International
Volume32
Issue number4
Early online date27 Jan 2006
DOIs
Publication statusPublished - 01 May 2006
Externally publishedYes

Keywords

  • air pollution control residues
  • risk
  • air quality impact
  • landfill
  • health

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