Accession Number : ADA610694


Title :   Acute Exposure Guideline Levels (AEGLs) for Time Varying Toxic Plumes


Descriptive Note : Memorandum rept.


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC LAB FOR COMPUTATIONAL PHYSICS AND FLUID DYNAMICS


Personal Author(s) : Boris, Jay P ; Patnaik, G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a610694.pdf


Report Date : 12 Sep 2014


Pagination or Media Count : 30


Abstract : Toxic airborne contaminants, when inhaled, can cause adverse health effects. The U.S. EPA tabulates three Acute Exposure Guideline Levels (AEGLs) for predicting the onset of these adverse effects from specific length exposures to specific concentrations of toxic chemicals for a general population. Inhalation exposures in the real world, however, vary strongly in space and time and thus do not correspond to the specific durations and exposure levels tabulated by the EPA-a complication that EPA does not resolve. This report gives an accurate, science-based algorithm with fast, easy-to-use software to fill this gap. The software package, called EAGLE, predicts the onset of AEGL 1, 2 and 3 conditions for an arbitrary airborne agent time history supplied by the user. EAGLE can be used with field data, sensor data, wind tunnel measurements, Computational Fluid Dynamics models and rapid-response plume prediction software to convert agent time histories into meaningful actionable health effect predictions. It can also be used to predict the strong effects of realistic concentration fluctuations and to compare plume prediction models in a meaningful way.


Descriptors :   *COMPUTATIONAL FLUID DYNAMICS , *COMPUTER PROGRAMS , *CONTAMINANTS , *EXPOSURE(PHYSIOLOGY) , *TOXIC AGENTS , AIRBORNE , ALGORITHMS , AMMONIA , CHLORINE , PLUMES , PREDICTIONS , TIME


Subject Categories : Anatomy and Physiology
      Inorganic Chemistry
      Computer Programming and Software
      Fluid Mechanics
      Environmental Health and Safety


Distribution Statement : APPROVED FOR PUBLIC RELEASE