RAC presented a comprehensive one week course in environmental radiological risk assessment, titled “Radiological Risk Assessment for Decision Making, Compliance, and Emergency Response” from March 5 – 9, 2012, in Washington, D.C. Course topics included: state-of-the-art environmental risk assessment methods, environmental transport modeling and pathway analysis, including principles, models and methods, and computer codes, key references; methods for predicting transport in air, surface water, and groundwater; insight and understanding of relevant regulations and guidelines; risk assessment software (where to get it and how to use it); how to build credibility and trust in the assessment process; and guidance in how to succeed in radiation risk communication.