The NRC hosted a Federal interagency workshop on multimedia environmental softwaresystems and data systems. The "Environmental Software Systems Compatibility and LinkageWorkshop" was held at NRC 's Professional Development Center in Rockville, MD, on March7-9, 2000. The environmental software systems that were discussed are used to evaluatecontaminant release, transport and health effects through various media (hence multimediarefers to air, ground, and surface water) and environmental pathways to the public. A majormotivation for the workshop was the desire of the participating Federal agencies to realizeefficiencies and cost savings by utilizing existing models, systems, and databases developed intheir programs, rather than developing totally new systems.