Shaw Environmental, Inc., under contract to the U.S. Army Corps of Engineers (US ACE), Nashville District, conducted a treatability study at the former West Virginia Ordnance Works (WVOW) near Point Pleasant, West Virginia. The former WVOW was a TNT-manufacturing facility that operated from 1942 to 1945. Facility operation resulted in soil and groundwater contamination, some of which still remains. The treatability study was conducted to test the effectiveness of in situ enhanced bioremediation for promoting biotransformation of TNT and other nitroaromatic compounds into innocuous reaction by-products in groundwater. Hydrogen Release Compound (HRC®), manufactured by Regenesis, was used as a carbon and energy source for indigenous microorganisms. HRC was injected into the shallow groundwater aquifer via direct-push rods. The study was conducted over an 11-month period and exhibited promising results for potential full-scale application as a treatment technology at this site. © 2005 Wiley Periodicals, Inc.