The United States (U.S.) Environmental Protection Agency (EPA) Toxics Release Inventory (TRI) program collects information on the disposal or other releases and other waste management activities for over 650 chemicals from industrial sources in all 50 states and the U.S. territories. The information has been collected annually since 1987. For 2004, the latest year for which data are available, disposal or other releases of TRI chemicals totaled over 4.24 billion pounds from over 23,600 U.S. facilities submitting almost 90,000 chemical forms. The 2004 TRI data are now available online. The time period covered for this year's data release is January 1, 2004, to December 31, 2004. These 2004 data were reported to EPA by July 1, 2005, and were released to the public in April 2006. Data for previous years back to 1988 are also available.