Sponsor – DOE
This task involves hydrological modeling related to water, sediment, mercury and tin in Tims Branch at Savannah River Site (SRS) which has been impacted by 60 years of anthropogenic events associated with discharges from process and laboratory facilities. Tims Branch provides a unique opportunity to study complex systems science in a full-scale ecosystem that experienced controlled step changes in boundary conditions.
FIU is continuing development and testing of an integrated hydrology and transport model of Tims Branch watershed using the MIKE commercial software suite developed by the Danish Hydraulic Institute (DHI) that is capable of simulating surface and subsurface hydrology and transport mechanisms. The Tims Branch watershed model was developed for a relatively well defined system in which all of the local mercury inputs were effectively eliminated via two remediation actions (2000 and 2007).
Furthermore, discharge of inorganic tin (as small micro particles and nanoparticles) was initiated in 2007 as a step function with high quality records on the quantity and timing of the release.
The principal objectives are to apply GIS and stream/ecosystem modeling tools to examine the response of Tims Branch to historical discharges and environmental management remediation actions.