The UK Environment Agency and Defra have published R&D Publication TOX 20 - Contaminants
in Soil: Collation of Toxicological Data and Intake Values for Humans: Naphthalene.
This is the latest report supporting the development of Soil Guideline Values protective of
human health. The report, along with all publications supporting the CLEA model, are
available as free downloads from the Defra web site at: