Fate and Transport Investigations Update for Chromium Contamination from Sandia Canyon

Summary

Presents updated investigations of chromium contamination in Sandia Canyon, integrating numerical fate-and-transport modeling, laboratory experiments, and field observations. The report refines the conceptual model of chromium migration, summarizes hydrologic, geochemical, and hydrogeological studies, and uses calibrated models to estimate affected aquifer areas, constrain likely chromium entry locations, and guide monitoring-well placement.