Print Email Facebook Twitter The grey areas in soil pollution risk mapping: The distinction between cases of soil pollution and increased background levels Title The grey areas in soil pollution risk mapping: The distinction between cases of soil pollution and increased background levels Author van der Gaast, N. Leenaers, H. Zegwaard, J. Nederlands Instituut voor Toegepaste Geowetenschappen TNO Publication year 1998 Abstract The progress of soil clean up in the Netherlands is severely hindered by the lack of common agreement on how to describe the grey areas of increased background levels of pollutants. In this study practical methods are proposed in which background levels are described as distribution functions within map units of comparable homogeneity. To stimulate large scale implementation the statistical methods are simple and robust. In most applications percentiles are preferred above averages. Applications include the trigger value for further investigation and the target values for soil clean up. Special attention has been given in developing methods which avoid high sampling costs. Aspecially the described method for evaluation of soils can be re-used can lead to considerable cost reduction, while maintaining a soil protection policy of 'stand still'. Subject PerceptionGrey areasIncreased background levelsSoil pollution risk mappingCost effectivenessLand useMappingPublic policyRisk assessmentStatistical methodsStrategic planningSoil pollution risk mappingSoil pollution To reference this document use: http://resolver.tudelft.nl/uuid:4874df11-3340-43ea-a9a0-0418a04fcafd DOI https://doi.org/10.1016/s0304-3894(98)00129-0 TNO identifier 234572 Publisher Elsevier Sci B.V., Amsterdam, Netherlands ISSN 0304-3894 Source Journal of Hazardous Materials, 61 (1-3), 249-255 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.