The CLEA Model

Ferguson and Denner12 described CLEA as a generic computer model of human exposure to soil contaminants which  

CLEA is a probabilistic model of human exposure to contaminants in soil. It is 

CLEA considers a number of land use scenarios. Ferguson and Denner12 reported that early versions considered  

The final version of CLEA is likely not to consider all of the above. The land use scenario determines which exposure pathways are relevant, who the critical receptor is, and what their activity patterns are. Guideline values are derived for each land use scenario. The Residential with gardens land use scenario is the most sensitive scenario and the Commercial and industrial scenario the least sensitive because of which pathways are considered. As the guideline values are generic, a reasonable worst case is assumed. They may not therefore be suitable for every site. For instance, the Parks, playing fields and open spaces land use has the same 

Ferguson and J. Denner, UK Action (or Intervention) Values for Contaminants in Soil for 

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