Poster (Scientific congresses and symposiums)
A regional flux-based risk assessment approach of contaminated sites on groundwater bodies
Brouyère, Serge; Jamin, Pierre; Dollé, Fabien et al.
2010Symposium de la Meuse 2010
 

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Keywords :
regional risk assessment; groundwater body; industrial contaminants; Water Framework Directive; megasite; SEQ-ESO
Abstract :
[en] In the context of the water framework directive, management plans have to be set up about water quality in surface and groundwater bodies in the EU. One of the first steps is to evaluate the risk of contamination of these water resources, and particularly the risk posed by contaminated industrial sites. From the perspective of water resource management, each of these sites taken individually does not necessary constitute a major threat. However, in heavily industrialised and urbanised areas, the cumulative effect of multiple contaminant sources is likely to present a risk. In order to propose adequate but still economically reliable measures, the calculated risk should be based on a so-called megasite approaches using criteria reflecting the water quality deterioration, in a cumulative way, at the scale of the whole surface water or groundwater body. A GIS-based regional risk assessment approach is developed here for groundwater bodies using the SEQ-ESO currently used within the Walloon Region as indicator to reflect the quality status of the groundwater body. The approach is applied on the groundwater body RWM073 “Gravels and alluvial deposits of the Meuse river between Engis and Herstal”, identified at risk of not reaching a good quality status by 2015. The different steps of this methodology consist of an inventory of proved or potential contaminating industrial sites, a numerical modelling of pollutants behaviour at the scale of the groundwater body and the application of the SEQ-ESO that finally gives a global quality status of the whole groundwater body. This analysis also serves as basis for a socio-economic approach intending to provide indications on costs and benefits generated by total or partial remediation of the contaminated groundwater bodies according to the different management scenarios.
Research center :
Aquapôle - ULiège
Disciplines :
Earth sciences & physical geography
Geological, petroleum & mining engineering
Author, co-author :
Brouyère, Serge  ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Jamin, Pierre ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Dollé, Fabien ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Orban, Philippe  ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Hérivaux, Cécile;  Bureau de Recherches Géologiques et Minières > Eau
Popescu, Ileana Cristina
Dassargues, Alain  ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
A regional flux-based risk assessment approach of contaminated sites on groundwater bodies
Publication date :
22 April 2010
Number of pages :
A0
Event name :
Symposium de la Meuse 2010
Event organizer :
Aquapôle ULg
Event place :
Liège, Belgium
Event date :
22-23 avril 2010
Audience :
International
Name of the research project :
FRAC-WECO : Flux-based risk assessment of contaminants on water resources and ecosystems (projet SD/TE/02A)
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 30 April 2010

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