title: Impact of runoff infiltration on contaminant accumulation and transport in the soil/filter media of Sustainable Urban Drainage Systems: A literature review.
abstract: The increasing use of Sustainable Urban Drainage Systems (SUDS) for stormwater management raises some concerns about the fate of ubiquitous runoff micropollutants in soils and their potential threat to groundwater. This question may be addressed either experimentally, by sampling and analyzing SUDS soil after a given operating time, or with a modeling approach to simulate the fate and transport of contaminants. After briefly reminding the processes responsible for the retention, degradation, or leaching of several urban-sourced contaminants in soils, this paper presents the state of the art about both experimental and modeling assessments. In spite of noteworthy differences in the sampling protocols, the soil parameters chosen as explanatory variables, and the methods used to evaluate the site-specific initial concentrations, most investigations undoubtedly evidenced a significant accumulation of metals and/or hydrocarbons in SUDS soils, which in the majority of the cases appears to be restricted to the upper 10 to 30cm. These results may suggest that SUDS exhibit an interesting potential for pollution control, but antinomic observations have also been made in several specific cases, and the inter-site concentration variability is still difficult to appraise. There seems to be no consensus regarding the level of complexity to be used in models. However, the available data deriving from experimental studies is generally limited to the contamination profiles and a few parameters of the soil, as a result of which "complex" models (including colloid-facilitated transport for example) appear to be difficult to validate before using them for predictive evaluations.
authors.affiliation: LEESU, UMR MA 102, École des Ponts, AgroParisTech, UPEC, UPE, Champs-sur-Marne, 6-8 avenue Blaise Pascal, Cité Descartes, 77455 Marne-la-Vallée Cedex 2, France; SEPIA, 53 rue de Turbigo, 75003 Paris, France. Electronic address: damien.tedoldi@leesu.enpc.fr.
authors.forename: Damien
authors.initials: D
authors.lastname: Tedoldi
authors.affiliation: LEESU, UMR MA 102, École des Ponts, AgroParisTech, UPEC, UPE, Champs-sur-Marne, 6-8 avenue Blaise Pascal, Cité Descartes, 77455 Marne-la-Vallée Cedex 2, France; Faculty of Engineering III, Lebanese University, Hadath, Lebanon. Electronic address: chebbo@leesu.enpc.fr.
authors.forename: Ghassan
authors.initials: G
authors.lastname: Chebbo
authors.affiliation: SEPIA, 53 rue de Turbigo, 75003 Paris, France. Electronic address: dp@sepia-uw.fr.
authors.forename: Daniel
authors.initials: D
authors.lastname: Pierlot
authors.affiliation: SEPIA, 53 rue de Turbigo, 75003 Paris, France. Electronic address: yk@sepia-uw.fr.
authors.forename: Yves
authors.initials: Y
authors.lastname: Kovacs
authors.affiliation: LEESU, UMR MA 102, École des Ponts, AgroParisTech, UPEC, UPE, Champs-sur-Marne, 6-8 avenue Blaise Pascal, Cité Descartes, 77455 Marne-la-Vallée Cedex 2, France. Electronic address: gromaire@leesu.enpc.fr.
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Gromaire
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D005374:Filtration; D008962:Models, Theoretical; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D012989:Soil Pollutants; D014874:Water Pollutants, Chemical
keywords: Modeling; Organic compounds; SUDS; Sampling; Spatial distribution; Trace metals