Why can’t I use the CLEA software v1.06 to derive soil assessment criteria for dioxins?
The toxicity of compounds showing dioxin-like modes of action is considered additive. The CLEA software does not account for additivity between chemicals and therefore cannot be used directly for calculating soil assessment criteria for dioxins, furans and dioxin-like PCBs. We have made available on this website, dioxins site-specific spreadsheets that you can use, in conjunction with Science Report SC050021/ Dioxins SGV ‘ Soil Guideline Values for dioxins, furans and dioxin-like PCBs in soil’ to derive assessment criteria: • for standard or non standard land uses and/or, • contamination based on a different profile of dioxins in soil (e.g. from a transformer oil spill) to that used to derive the SGVs. To use the worksheets you enter soil concentration data for all 29 congeners. For non-standard land uses, you are required to enter exposure factor data derived using the CLEA software v1.06. Science Report SC050021 / Dioxins SGV explains how to use these worksheets.
Related Questions
- Why does the CLEA software v1.06 not include all the chemical data contained within Science Report SC050021/SR7 ‘Compilation of chemical data for the derivation of Soil Guideline Values’?
- The ‘bioaccessible fraction’ has changed to ‘relative bioavailability’ in the CLEA software v1.06, is the data that I previously used for arsenic incorrect?
- Why can’t I use the CLEA software v1.06 to derive soil assessment criteria for dioxins?
