Toxmap displays
EPA's 2007 TRI (Toxic Release Inventory)data on interactive mode and includes the mapping of superfund sites and other chemical environmental health data. See more about Toxmap at
http://www.nlm.nih.gov/pubs/factsheets/toxmap.html. Explore also
Toxnet (Toxicology Data Network), a collection of databases for health and environemntal professionals. Source: National Library of Medicine.