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DoD Comments to NRC Committee on Improvements to EPA Risk Analysis

DoD Comments to NRC Committee on Improvements to EPA Risk Analysis. Yvonne P. Walker, MS, MSE, CIH Director, Environmental Programs Navy Environmental Health Center Portsmouth, VA. DoD: A User of EPA Risk Analysis.

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DoD Comments to NRC Committee on Improvements to EPA Risk Analysis

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  1. DoD Comments to NRC Committee on Improvements to EPA Risk Analysis Yvonne P. Walker, MS, MSE, CIH Director, Environmental Programs Navy Environmental Health Center Portsmouth, VA

  2. DoD: A User of EPA Risk Analysis • EPA risk analysis programs has significant impacts on DoD’s mission and resources • Important that EPA risk analysis process be scientifically sound, understandable and clear • We perceive the Committee’s task to be focused on EPA’s application of the Red Book • Not revisiting the entire risk analysis paradigm • Red Book’s risk paradigm is used by multiple federal agencies for multiple purposes.

  3. DoD Expertise in Risk Analysis • Program • Military Exposure Guidelines (MEGs) • Chemical Weapons Material (CWM) • Acute Exposure Guideline Levels (AEGLs) • Emergency Exposure Guidance Levels (EEGLs) • Deployment Health: Environmental Health Site Assessment • Medical Threat Assessment • Weapons and Explosives Substances Review Board • Acquisition Health Hazard Assessments • Ecological Threshold Reference Values (TRVs) • Evaluating New Weapons Systems, Platforms and Equipment • Toxicological Safety Evaluations • Microbial Risk Assessments • Composite Risk Management • Chemical • PBPK Modeling

  4. Questions for the Committee to Reflect Upon • How can uncertainty in risk assessments be more effectively communicated to users and the public? • Decision-makers must understand what drove the assumptions so that they can make appropriate decisions. • As we learn more about mechanisms of action and use modern methodology advancements, how should uncertainty factors be addressed, such as when precursor events are used? • Risk range and central estimate • What is the proper role of various point estimates of risk in risk management decision-making?

  5. In Summary… • As health and environmental risk assessors, the DoD welcomes NAS’s review of the application of the Red Book’s conceptual framework to the EPA risk assessment paradigm. • DoD offers our knowledge and expertise to assist the Committee in their charge. • DoD requests that the Committee provide recommendations for developing scientifically sound, understandable and clear risk assessments and for communicating uncertainty to risk managers and the public.

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