Pilot-scale testing at a RCRA-regulated facility in Research Triangle Park (RTP), NC, was conducted in 2002 to test the effectiveness of in-situ injections of nanoscale zero-valent iron (NZVI) in removing chlorinated hydrocarbons from bedrock ground water. Pre- and post-treatment sample analysis indicated a 90% reduction of total chlorinated volatile organic compound (CVOC) concentrations within seven days of the injection. During the following five weeks, concentrations of trichloroethene (TCE), as the primary contaminant of concern, decreased more than 99%.