Application of TREECS Modeling System to Strontium-90 for Borschi Watershed near Chernobyl, Ukraine.The Training Range Environmental Evaluation and Characterization System (TREECS™) (http://el.erdc.usace.army.mil/treecs/) is being developed by the U.S. Army Engineer Research and Development Center (ERDC) for the U.S. Army to forecast the fate of munitions constituents (MC) (such as high explosives (HE) and metals) found on firing/training ranges, as well as those subsequently transported to surface water and groundwater.  The overall purpose of TREECS™ is to provide environmental specialists with tools to assess the potential for MC migration into surface water and groundwater systems and to assess range management strategies to ensure protection of human health and the environment.  The multimedia fate/transport models within TREECS™ are mathematical models of reduced form (e.g., reduced dimensionality) that allow rapid application with less input data requirements compared with more complicated models.  Although TREECS™ was developed for the fate of MC from military ranges, it has general applicability to many other situations requiring prediction of contaminant (including radionuclide) fate in multi-media environmental systems.  TREECS™ was applied to the Borschi watershed near the Chernobyl Nuclear Power Plant, Ukraine.  At this site, TREECS™ demonstrated its use as a modeling tool to predict the fate of strontium 90 ((90)Sr).  The TREECS™ soil model provided reasonable estimates of the surface water export flux of (90)Sr from the Borschi watershed when using a Kd for (90)Sr of 200 L/kg.  This presentation will focus on TREECS capabilities and the case study done for the Borschi Watershed.
TREECS