Further recommended reading
Dermal Exposure Assessment: Principles & Applications. EPA/600/891/011B; US EPA; 1992., which was only partially susperceded by US EPA (OSWER) 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E Supplemental Guidance for Dermal Risk Assessment. EPA/540/R/99/005.
UK DEFRA, Environment Agency, 2004. Model Procedures for the Managment of Land Contamination CLR11. Although a slight change away from general international practice, includes lists of good sources of reference materials.