RemBac Environmental develops and deploys patented, in situ bioremediation technology for PCB-contaminated sediments and soils, combining naturally occurring PCB-degrading microorganisms with activated carbon. Baltimore-based co-founders Kevin R. Sowers and Upal Ghosh bring decades of anaerobic microbiology and environmental engineering experience to a method designed to degrade and sequester PCBs while avoiding the disruption of conventional dredging. The company’s work includes pilot treatments at Superfund and other contaminated sites, including documented reductions in PCB mass and bioavailable PCBs.