As part of large, multi-disciplinary teams we have evaluated radionuclide fate, attenuation, and storage at sites including Oak Ridge, TN and Paducah, KY.  Projects have been performed for international clients, the US Department of Energy (DOE), and private clients.  Our staff have been continuously involved in DOE projects for over a decade providing the below-listed services: Radiological and contaminant transport modeling, Performance Assessments (PA) & Composite Analysis (CA), Environmental assessments and remediation design/optimization, Radiation Safety Officer-related services, Management and compliance assessments of operational radiation safety programs, Independent assessments and Operational Readiness Reviews, Qualified as a Lead Auditor and independent assessments of radiation protection programs, and Environmental geophysics.