This fact sheet summarizes the activities of the Federal Remediation Technologies Roundtable (FRTR) over the last year. The FRTR is an interagency working group that promotes cooperation among member agencies to promote development and use of new technologies for improved remediation of hazardous waste sites. Primary members of the FRTR include the U.S. Department of Defense (DoD), the U.S. Department of Energy (DOE), the U.S. Department of the Interior (DOI), the U.S. National Aeronautics and Space Administration (NASA), and the U.S. Environmental Protection Agency (EPA). This factsheet highlights work that the FRTR member agencies are doing on VI issues. VI refers to the condition when vapors and gases from contaminated groundwater and soil seep into indoor spaces; these vapors may have the potential to cause health problems. Federal agencies are actively working on understanding the potential for VI at sites, as well as the cleanup and possible health issues raised by VI.