Environmental Toxicology Expert Witness & Oregon Guard Case

Environmental toxicology expert witness Dr. Herman Gibb testified for Oregon Guard soldiers in their case against KBR, defense contractor at an Iraqi water treatment plant. The soldiers say they were exposed to unsafe levels of the carcinogen hexavalent chromium. Dr. Gibb is the President of Tetra Tech Sciences, a health risk assessment company located in Alexandria, VA, and previously worked for the EPA.