United States Environmental Protection Agency Air and Energy Engineering Research Laboratory Research Triangle Park NC 27711 Research and Development EPA/600/SR-93/052 May 1993 Project Summary Proceedings of the Indoor Radon Modeling Workshop, Florida Radon Research Program David E. Hintenlang The report documents the Florida Ra- don Research Program's (FRRP's) In- door Radon Modeling Workshop, held April 16-17, 1991, in Tampa. Florida. The workshop brought together experts in various aspects of modeling the be- havior and origin of indoor radon, with the objective of evaluating models for potential integration and application to Florida buildings and the FRRP. The workshop provided guidance for the use of theoretical modeling as an aid to developing codes for radon resis- tant buildings. Presentations addressed general modeling methods and strate- gies, radon and soil gas entry models, radon mitigation methods modeling, indoor air transport modeling, and in- tegration of diagnostic and empirical measurements to support modeling. This Project Summary was devel- oped by EPA's Air and Energy Engi- neering Research Laboratory, Research Triangle Park, NC, to announce key find- ings of the research project that is fully documented in a separate report of the same title (see Project Report ordering information at back). Introduction The Florida Radon Research Program (FRRP) conducted the Indoor Radon Mod- eling Workshop, on April 16-17, 1991, in Tampa Florida. The workshop brought to- gether experts in various aspects of mod- eling the behavior and origin of indoor radon, with the objective of evaluating spe- cific models for potential integration, and application to Florida buildings and the FRRP. The workshop provided guidance for the utilization of theoretical modeling as an aid to the development of radon resistant building codes. This includes both direct applications to building design as well as applications that provide indirect guidance through research efforts. To achieve these objectives a number of eminent researchers who have worked with well developed theoretical models made presentations elucidating the par- ticular details of their models and relevant applications. The proceedings include a narrative summary and the visual presen- tation materials for each presentation. Pre- sentations addressed: General Modeling Methods and Strate- gies Radon and Soil Gas Entry Models Radon Mitigation Methods Modeling Indoor Air Transport Modeling Integration of Diagnostic and Empirical Measurements to Support Modeling At the conclusion of the presentations, the participants divided into two task groups to address questions and develop recommendations and guidelines. Task Group 1 addressed FRRP Re- search House and New House Evaluation Project (NHEP) issues, while Task Group 2 addressed model extension and inte- gration. The proceedings summarize the discussion and conclusion of each task group. Task Group 1 concluded that modeling efforts should be expected to be able to be integrated with the research house and NHEP studies to provide useful tools that will avoid the need for massive empirical testing. A strategy for applying both de- tailed models and more general macro models to the Research House and NHEP programs was developed. Task Group 2 concluded that models addressing each problem area discussed in the workshop are well developed, but not complete. Integration of some of these models is feasible and would be valuable to enhance the understanding of the fun- damental physical principles governing in- door radon entry and transport processes. Printed on Recycled Paper ------- D.E. Hintenlangis with The University of Florida, Department of Nuclear Engineer- ing Sciences, Gainesville, FL 32611. David C. Sanchez is the EPA Project Officer (see below) The complete report, entitled "Proceedings of the Indoor Radon Modeling Work- shop, Florida Radon Research Program," (Order No. PB93-172922; Cost: $27.00), will be available only from: National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone: 703-487-4650 The EPA Project Officer can be contacted at: Air and Energy Engineering Research Laboratory U.S. Environmental Protection Agency Research Triangle Park, NC 27711 United States Environmental Protection Agency Center for Environmental Research Information Cincinnati, OH 45268 Official Business Penalty for Private Use $300 BULK RATE POSTAGE & FEES PAID EPA PERMIT No. G-35 EPA/600/SR-93/052 ------- |