What are the main changes to the CLEA model?
The CLEA model published in January 2009 incorporated changes made to address feedback we received towards the end of 2009. We have: • added a new soil type • revised the default soil gas ingress values; • revised the soil-to-indoor dust transport factor; • revised the indoor dust loading factor; and • revised the definition of surface soil for outdoor vapour modelling. Details of these amendments can be found in the CLEA report, and in the summary of amendments document available to download from the CLEA framework reports page.