Surface-to-Air Particle Suspension Formulations: Computed Source Term Release Model, Multimedia Environmental Pollutant Assessment System (MEPAS)
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Preface
Summary
Table of Contents
1.0 Introduction
2.0 Surface-to-Air Particle Suspension Models
3.0 Revised Formulations for Surface-to-Air Mass Flux Models
Preface
This report is one in a series that documents the mathematical models implemented in the Multimedia Environmental Pollutant Assessment System (MEPAS). MEPAS, which was originally developed by the Pacific Northwest National Laboratory for the U.S. Department Energy, currently operates within the Framework for Risk Analysis in Multimedia Environmental Systems (FRAMES). Additional development work for FRAMES and updates for components such as MEPAS have been funded by the U.S. Army Corps of Engineers, U..S. Environmental Protection Agency's Office of Research and Development and Office of Air and Radiation, and the U.S. Nuclear Regulatory Commission.
FRAMES is a computer system for linking source, transport, impact, and related analysis codes in a single platform that includes databases, statistical packages, plotting and viewing capabilities, etc. MEPAS is a set of impact assessment codes and a database for physics-based fate and transport models in air, soil, and water media. Outputs of MEPAS are estimates of exposures and health risks.
The updated formulations for surface-to-air particle suspension are implemented starting in FRAMES 1.3. These revised formulations replace Section 5.2, "Wind Suspension Rate Calculations," in Streile et al. (1996). (PNNL-11248).
