Dr. Nason’s research group focuses broadly on physical and chemical processes related to water quality control. Over the last decade, this work has been focused in two primary areas: (1) the fate and transport of particulate contaminants and the chemical and physical parameters that govern these processes; and (2) the aquatic speciation and treatment of metals in stormwater and wastewater. A common thread that runs through both research areas is investigation of the role of natural organic matter. This work serves to promote a better understanding of the mechanisms involved in the fate, transport, and treatment of aquatic contaminants, and provides insight into decisions with respect to management and engineering design.