NDLI: Risk assessment of contaminated sediments in river basins—theoretical considerations and pragmatic approach

Content Provider	Royal Society of Chemistry (RSC)
Author	Förstner, Ulrich Heise, Susanne
Copyright Year	2007
Abstract	In order to ensure chemical quality of river basins, measures as required in the Water Framework Directive will also have to address contaminated sediments with subsequent monitoring of their successful application. Financial resources need to be allocated as part of a river basin plan to those contaminated sites that pose the biggest risk to the river basin. In order to differentiate between areas with elevated contaminant levels (“areas of concern”) and those sites from which contaminated sediments can become resuspended and transported with the river, affecting the water phase and downstream sites in the catchment (“areas of risk”), the dynamics of sediment and suspended matter need to come into focus. Hydrological data have to be combined with concentration of suspended matter and its contaminant concentration to allow assessment of particle bound contaminant load. Each of these kinds of data, however, are subject to uncertainties—e.g. due to natural variability, heterogeneity of the matrix, challenges during sampling and chemical analyses of the suspended matter. Considering these uncertainties throughout the traceability chains of data collection, use of different lines of evidence and tools like fuzzy logic will increase the confidence of potentially costly management decisions.
Starting Page	943
Ending Page	952
Page Count	10
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	9
Issue Number	9
Journal	Journal of Environmental Monitoring
DOI	10.1039/b704071g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Water Framework Directive Sediment Composite material Fuzzy logic
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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