Review on physical and chemical characterizations of contaminated sediments from urban stormwater infiltration basins within the framework of the French observatory for urban hydrology (SOERE URBIS).
Urban stormwater infiltration basins are designed to hold runoff from impervious surfaces and allow the settling of sediments and associated pollutants. However concerns have been expressed about the environmental impacts that may be exerted by the trapped pollutants on groundwater, soils and ecosystems. In this context, sediment characterization represents a key issue for local authorities in terms of management strategies. During the last two decades, several studies were launched including either physical or chemical characterization of stormwater sediments but without real synthesis of data and methods used. Consequently, there is an important need for reviewing the current experimental techniques devoted to the physico-chemical characterization of sediment. The review is based on the outcomes of two experimental sites for which long term monitoring and data collection have been done: the Cheviré basin (near Nantes) and the Django Reinhardt basin (near Lyon). The authors summarize the studies dealing with bulk properties, pollutant contents, their potential mobility and speciation. This paper aims at promoting the significant progresses that were made through a multidisciplinary approach involving multi-scaled and combined experimental techniques.
Department of Geotechnics, Environment, Risks and Soil sciences, PRES LUNAM, French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), Centre de Nantes, Route de Bouaye CS4, Bouguenais, 44344, France, amelene.al.husseini@univ-poitiers.fr.
Amelène
A
El-Mufleh
Béatrice
B
Béchet
Véronique
V
Ruban
Michel
M
Legret
Blandine
B
Clozel
Sylvie
S
Barraud
Carolina
C
Gonzalez-Merchan
Jean-Philippe
JP
Bedell
Cécile
C
Delolme
D002947:Cities; D004323:Drainage, Sanitary; D017753:Ecosystem; D004784:Environmental Monitoring; D005602:France; D005618:Fresh Water / Q000737:chemistry; D019015:Geologic Sediments / Q000737:chemistry*; D060587:Groundwater; D062070:Hydrology; D011891:Rain; D012987:Soil; D014874:Water Pollutants, Chemical / Q000032:analysis*
D012987:Soil; D014874:Water Pollutants, Chemical