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Spatial distribution of heavy metals in soils and groundwater at the 2000 Olympic Games site, Sydney, Australia  

Suh, Jeong-Yul (School of Geosciences, Division of Geology and Geophysics, University of Sydney)
Publication Information
Journal of Soil and Groundwater Environment / v.9, no.1, 2004 , pp. 70-78 More about this Journal
Abstract
The current study was undertaken to evaluate the hydrogeochemical implications of heavy metals (Cr, Cu, Pb, Zn) in both soils and groundwater in reclaimed lands of Sydney's 2000 Olympic Games site at Homebush Bay in Port Jackson, Sydney. The Olympic Games site can be divided into three areas, i.e. 'reclaimed areas' were previously estuarine, and were filled with waste materials and are now above present high tide level, whereas 'landfill areas' are areas where deposition of waste materials occurred above sea level. No deposition of waste took place in 'non-infilled areas'. 4513 soil core samples and 101 groundwater samples were analyzed for Cr, Cu, Pb, Zn. The mean heavy metal (Cr, Cu, Pb, Zn) concentrations in soils of the study area revealed the order of reclaimed (greatest), landfill and non-infilled area (smallest), whereas in groundwater it is all shown the order of landfill, reclaimed and non-infilled area, except for Pb. Mean Pb concentration in soils derived from the three land types at the Olympic Games site revealed the order of reclaimed area(174 $\mu\textrm{g}$/g), landfill area (102 $\mu\textrm{g}$/g) and non-infilled area (48 $\mu\textrm{g}$/g). Results reveal that soils contaminated by Cr, Cu, Pb and Zn in reclaimed/landfill areas are associated with dumped materials. No relationship could be established between soil and groundwater concentrations of heavy metals (Cr, Cu, Pb, Zn) in the landfill, reclaimed and non-infilled areas of the Olympic site, probably due to the varied nature of the materials deposited at the Olympic site.
Keywords
2000 Olympic Games site; reclaimed land; waste materials; soil; groundwater;
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