Spatial distribution of pollution in an urban stormwater infiltration basin

Journal of Contaminant Hydrology
Magali DechesneJean-Pascal Bardin

Abstract

Infiltration basins are frequently used for stormwater drainage. Because stormwater is polluted in highly toxic compounds, assessment of pollution retention by infiltration basins is necessary. Indeed, if basins are not effective in trapping pollution, deep soil and groundwater may be contaminated. This study's objective is to investigate soil pollution in infiltration basins: spatial distribution of soil pollution, optimisation of the number of soil samples and a contamination indicator are presented. It is part of a global project on long-term impact of stormwater infiltration on groundwater. Soil sampling was done on a basin in suburban Lyon (France). Samples were collected at different depths and analysed for nutrients, heavy metals, hydrocarbons and grain size. Pollutant concentrations decrease rapidly with depth while pH, mineralisation and grain size increase. Sustainable metal concentrations are reached at a 30-cm depth, even after 14 years of operation; hydrocarbon pollution is deeper. Principal component analysis shows how pollutants affect each level. The topsoil is different from other levels. Three specifically located points are enough to estimate the mass of pollution trapped by the basin with a 26% error. The pr...Continue Reading

Citations

Jun 6, 2009·Archives of Environmental Contamination and Toxicology·Kevin D CrawfordGavin Globensky
Apr 3, 2013·Environmental Science and Pollution Research International·Jianghua YuLiqiang Xu
Jun 25, 2008·The Science of the Total Environment·Anne-Laure BadinCécile Delolme
Jun 26, 2004·Journal of Environmental Management·Magali DechesneJean-Pascal Bardin
Aug 11, 2005·Journal of Contaminant Hydrology·Florian MalardJanine Gibert
Mar 30, 2010·Environmental Pollution·Kimberly M CamponelliRyan E Casey
Apr 20, 2016·The Science of the Total Environment·Nils HorstmeyerBrigitte Helmreich
Mar 11, 2008·Water Research·Michio MurakamiHiroaki Furumai
Jun 17, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Chao GuoYajiao Li
Jul 23, 2018·The Science of the Total Environment·M WalaszekA Wanko
Jul 22, 2017·Environmental Science & Technology·Rachel S GaborPaul D Brooks

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