Atkins ATRISKsoil SSVs have been derived using CLEA v1.071 software and up to date exposure assumptions based on the principles of minimal toxicological risk at 1% and 6% soil organic matter for the following standard land uses:


  • residential with consumption of home-grown produce;
  • residential without consumption of home-grown produce;
  • commercial;
  • public open space (residential);
  • public open space (parks); and,
  • allotments (6% SOM sandy loam only).


The WSVs have been derived for volatile contaminants in groundwater for the standard commercial and residential land uses in accordance with Environment Agency SR3 guidance using the RBCA model.


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