This fact sheet, developed by the U.S. EPA Federal Facilities Restoration and Reuse Office (FFRRO), provides a brief summary of the emerging contaminant 1,2,3-trichloropropane (TCP), including physical and chemical properties; environmental and health impacts; existing federal and state guidelines; detection and treatment methods; and sources of additional information. TCP is an emerging contaminant of interest to the government, private sector, and other parties. It is recognized by the State of California to cause cancer and is a known toxin. The State of Hawaii has established a state maximum contaminant level (MCL) of 0.6 micrograms per liter (µg/L). This fact sheet is intended for use by site managers and other field personnel in addressing TCP contamination at cleanup sites or in drinking water supplies. |