Debra J Stewart Data Scientist Contact stewartdj@ornl.gov | 865.576.5450 All Publications An Overview of the Risk Assessment Information System Quantifying the Impact of Excluding the Submersion Exposure Route for Existing Superfund Radionuclide Screening Level Calcula... Air Exchange Rate Impact on Activity Equilibrium Factors and Inhalation Fractional Equilibrium Factors for Rn, Xe, Kr, Ar, Ne, and Their Progeny in Vapor Intrusion, Risk, and Dose Models Bateman Equation Adaptation for Solving and Integrating Peak Activity into EPA ELCR and Dose Models Air Exchange Rate Impact on Actinon, Thoron, and Radon Activity Equilibrium Factor and Inhalation Fractional Equilibrium Factor Determination in Vapor Intrusion Risk and Dose Models Federal Guidance Report 15: External Exposure to Radionuclides in Soil, Air, and Water... Data Source Summary Documents (DSSDs) Derived for Updated Drinking Water Standards and Health Advisories (DWSHA) Tables... Key Links Curriculum Vitae The Risk Assessment Information System Regional Screening Levels for Chemical Contaminants at Superfund Sites Spatial Analysis and Decision Assistance Organizations Biological and Environmental Systems Science Directorate Environmental Sciences Division Biodiversity and Sustainable Systems Section Environmental Risk and Energy Analysis Group