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Georgopoulos 2002 DRAFT - Interim Technical Report(Draft Do...

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Interim Technical Report (Draft): Do Not Cite or Quote Atmospheric Dispersion and Resuspension of Particulate Matter: Critical Evaluation of Modeling Techniques and New Developments Technical Report CCL/CRESP-00XX Prepared for the Consortium for Risk Evaluation with Stakeholder Participation (CRESP) by Mihalis Lazaridis, Panayotis Kevrekidis & Panos G. Georgopoulos CRESP Center of Expertise in Exposure Assessment Computational Chemodynamics Laboratory www.ccl.rutgers.edu Environmental and Occupational Health Sciences Institute (EOHSI) UMDNJ – R.W. Johnson Medical School & Rutgers, The State University of NJ 170 Frelinghuysen Road, Piscataway, NJ 08854 Draft of: January 8, 2002
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Contents 1 Introduction 1 2 The FDM model 3 2.1 Description of the FDM model . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 Deposition Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.2 Input data - Emission rates . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.3 Treatment of sources . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Example 1 : Evaluation of Particulate Matter Dispersion from an Area Source 7 2.3 Example 2 : Application of the FDM model to the Savannah River Site . . . . 16 3 Modifications to FDM and example applications 25 3.1 Description, assumptions, needs . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.2 Example 1 : Calculations including wet deposition . . . . . . . . . . . . . . . 28 3.3 Example 2 : Calculations with a new resuspension module . . . . . . . . . . . 33 3.4 Modifications of the Dispersion Approach of the Fugitive Dust Model . . . . . 35 4 Studies of Particulate Matter Dispersion from the University of Washington - Comparison with the FDM Model Approach 39 4.1 Description of Planned Field Experiments at the University of Washington . . . 41 5 Discussion and Recommendations 49 6 Appendix 51 6.1 Appendix 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 6.2 Appendix 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 6.3 Appendix 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 6.4 Appendix 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 6.5 Appendix 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 6.6 Appendix 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.7 Appendix 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 6.8 Appendix 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 i
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Chapter 1 Introduction The objective of the present report is the evaluation of modeling techniques for atmo- spheric dispersion of particulate matter at different DOE Sites. There is a main concern for potential human health risk from toxic and radioactive material release into the at- mosphere from different DOE Sites. Particulate matter release into the atmosphere is an important pathway for potential radioactive dose to human receptors onsite and offsite of DOE Sites. Particulate matter releases are due to direct emissions into the atmosphere and due to secondary vapor to particulate formation. Different mechanisms for particulate dispersion and transport have been evaluated in the present report, as the mechanisms of dry and wet deposition, estimation of dispersion parameters, treatment of pollution sources, condensation and nucleation processes, and resuspension from soil. An atmo- spheric turbulence spectra method has been proposed for the estimation of dispersion parameters and a Green’s function formulation for the derivation of the Gaussian Plume equation as a solution of the atmospheric diffusion equation. In addition resuspension due to atmospheric turbulence and surface vibrations is examined as possible pathways for particle resuspension from different surfaces. Two different resuspension models have been
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