Abstract
Generic and detailed quantitative assessments of the risks posed to human health from land contamination involve the comparison of representative contaminant concentrations against relevant generic or site-specific assessment criteria respectively. Technical guidance on statistical tests to determine whether contaminant concentrations exceed relevant assessment criteria fails to recognize the effects of sample clustering and heterogeneity in ground conditions on the validity of the test results. Reference to the conceptual model should be made to determine the likely level of contamination to which the critical receptor may be exposed within an averaging area.
- © 2004 The Geological Society of London
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The use and misuse of CLR 7 acceptance tests for assessment of risks to human health from contaminated land
- Article
- Abstract
- The mean and maximum value tests in CLR 7
- Guidance in P5-066/TR
- The effect of clustering
- The effect of heterogeneity
- The effect of a targeted sampling strategy
- Measurements below the limit of detection
- Conclusions
- Appendix 1. Use of Soil Guideline Values in Part IIA (Extracted from CLR 7, DEFRA & Environment Agency 2002a)
- Acknowledgements
- References
- Figures & Data
- Info & Metrics