Dr. Mark Ballentine has been a research biologist at the U.S. Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC), Environmental Laboratory in Vicksburg, Mississippi since May 2016. Prior to his work at ERDC, he obtained his bachelor’s degree in biology from Indiana University and Ph.D. in oceanography from University of Connecticut. Dr. Ballentine is currently serving as a principle investigator where his research focuses risk assessment, toxicity, and remediation of emerging contaminants. Current research includes using additive manufacturing (3D printing) as a tool by combining environmentally friendly polymers with advanced materials and printing complex high surface area structures to reduce and remediate toxicity of ammonia, harmful algae blooms (HABs) toxins, and Per- and Polyfluoroalkyl substances (PFAS). Dr. Ballentine maintains several professional memberships including the Society of Environmental Toxicology and Chemistry (SETAC) and the International Organization for Standardization (ISO) where he is a project leader and voting member.