Sites impacted by even extremely high concentrations of chlorinated solvents (indicative of dense non-aqueous phase liquid, i.e. DNAPL) are being closed using a specially-prepared, activated carbon impregnated with an iron salt that is pyrolized into nano-sized deposits of porous, metallic iron. Contaminants are adsorbed by the carbon catalyst and quickly and efficiently treated via reductive dechlorination by the iron. LT Environmental, Inc. (LTE) has pioneered the TerraCert® program for implementing remedies using this carbon-iron injectate, known as BOS 100®. Three case studies are presented to document the effectiveness of this innovative technology.