Citation:
Christopher Macleod, Raquel Duarte-Davidson, Bernard Fisher, Betty Ng, David Willey, Ji Ping Shi, Ian Martin, Gillian Drew, Simon Pollard, Modelling human exposures to air pollution control (APC) residues released from
landfills in England and Wales, Environment International, Volume 32, Issue 4, May 2006, Pages 500–509.
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 modelling 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
modelling suggested that indirect exposures from PCDDs/PCDFs at the 95th
percentile level for the site where APC deposition rates were highest, exceed
the tolerable daily soil intake (TDSI) but warrant further study given 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.
