dispersion modeling Articles
-
`Understanding and Adapting to New Dispersion Models,` published in the Oregon Insider, December 2001
The U.S. Environmental Protection Agency (EPA) has proposed revisions to its air dispersion modeling guidance1 ("Guideline on Air Quality Models", or simply "Guideline"), found in 40 CFR 51 Appendix W.2 These revisions, once finalized, will create significant changes in the way that air quality analyses are performed in the US, and perhaps the most significant changes since (he Guideline was ...
-
Understanding and Adapting to New Dispersion Models
The U.S. Environmental Protection Agency (EPA) has proposed revisions to its air dispersion modeling guidance1 (“Guideline on Air Quality Models”, or simply “Guideline”), found in 40 CFR 51 Appendix W.2 These revisions, once finalized, will create significant changes in the way that air quality analyses are performed in the US, and perhaps the most significant changes since the Guideline was ...
-
Significance of a CALPUFF Near-Field Analysis
Historically CALPUFF air dispersion modeling has been a useful tool for determining ambient concentrations, regional haze, and deposition in Class I areas for Prevention of Significant Deterioration (PSD) applications. Until recently, CALPUFF has not been utilized by minor sources for small permitting projects or for near- field regulatory analyses due to the costs encountered from the complexity ...
-
`Arkansas Air Permitting Issues Update,` presented at the 2006 AEF conference
Chuck’s On The Horizon Issues AERMOD Proper use of terrain andmet data NSR Reform Proposal Debottlenecking Aggregation Netting Dispersion Modeling Update On November 9, 2006, AERMOD willreplace ISC as the approved RegulatoryGuideline Model (Guideline on Air QualityModels, 40 CFR 51 Appendix W) AERMOD is similar to ISC, but requiresmore extensive input, e.g., ...
-
Sensitivity Analysis Study Considering the Selection of Appropriate Land-Use Parameters in AERMOD Modeling Analyses
In the near future AERMOD PRIME will officially replace the Industrial Source Complex Short-Term model, Version 3 (ISCST3) as the preferred Environmental Protection Agency (EPA) air dispersion model. Unlike the ISCST3 model that requires the simple selection of urban or rural default settings, the AERMOD dispersion model has a meteorological pre-processor (AERMET) that requires the input of ...
-
Sensitivity Analysis Study Considering the Selection of Appropriate Land-Use Parameters in AERMOD Modeling Analyses
In the near future AERMOD PRIME will officially replace the Industrial Source Complex Short-Term model, Version 3 (ISCST3) as the preferred Environmental Protection Agency (EPA) air dispersion model. Unlike the ISCST3 model that requires the simple selection of urban or rural default settings, the AERMOD dispersion model has a meteorological pre-processor (AERMET) that requires the input of ...
-
`Sensitivity Analysis Study Considering the Selection of Appropriate Land-Use Parameters in AERMOD Modeling Analyses,` presented at the 2004 AWMA annual conference
Abstract In the near future AERMOD PRIME will officially replace the Industrial Source Complex Short-Term model, Version 3 (ISCST3) as the preferred Environmental Protection Agency (EPA) air dispersion model. Unlike the ISCST3 model that requires the simple selection of urban or rural default settings, the AERMOD dispersion model has a meteorological pre-processor (AERMET) that requires the ...
-
Atmospheric dispersion models for regulatory purposes in the Federal Republic of Germany. Part I: Regulatory modelling
The legal framework for the application of atmospheric dispersion models for air pollution control in Germany is outlined. Atmospheric dispersion models in regulatory procedures are currently essentially based on the Gaussian approach. However, more advanced modelling is already available.Keywords: air pollution control, atmospheric dispersion models, Gaussian model, Germany, regulatory ...
-
Developing a Risk Management Program for a Flexible Polyurethane Foam Manufacturing Facility
ABSTRACT The U. S. Environmental Protection Agency’s (EPA) Risk Management Program (RMP) regulations, require facilities to develop a formal Risk Management Program (RMProgram) and to register and submit a Risk Management Plan (RMPlan). Regulated facilities must implement a RMProgram and submit a RMPlan before 21 June 1999. The RMP regulations will require most Flexible Polyurethane Foam ...
-
On the dispersion models and atmospheric dispersion
As an air pollutant is transported, the pollutant disperses into the surrounding air so that it arrives at a lower concentration than it was on leaving the source. Strict environmental regulations worldwide resulted in a growing concern about the validity of air quality dispersion models. The present work is a try to evaluate the applicability of some dispersion models on the emission from an ...
-
Development of numerical model for dispersion over complicated terrain in the convective boundary layer
Complicated terrain and atmospheric stability are important factors in the predicting the dispersion of air pollutants. The aim of our study is to develop practical dispersion model for unstable conditions for regulatory use. The numerical model we adopted was a combination of the potential flow model and Lagrangian stochastic dispersion model. In this model, time-mean flow field is solved by the ...
-
Meteorological data from numerical weather prediction or observations for dispersion modelling
Synoptic observations of wind speed, direction, cloud cover, precipitation and temperature are inputs to regulatory dispersion modelling. Numerical Weather Prediction (NWP) data generated by national meteorological services are easily formatted for dispersion models. Changing from observations to NWP data raises concerns amongst regulators and model users – how might impact assessments differ if ...
-
Comparison of Two Dispersion Models: A Bulk Petroleum Storage Terminal Case Study
In 65 FR 21506 (dated April 21, 2000), the United States Environmental Protection Agency (U.S. EPA) proposed revisions to its air dispersion modeling guidance, found in 40 CFR 51, Appendix W (“Guideline on Air Quality Models”) that included replacing the Industrial Source Complex (ISC) model with the American Meteorological Society (AMS) / EPA Regulatory Model (AERMOD) as the regulatory default ...
-
`Comparison of Two Dispersion Models: A Bulk Petroleum Storage Terminal Case Study,` presented at AWMA 2004 annual conference
Abstract In 65 FR 21506 (dated April 21, 2000), the United States Environmental Protection Agency (U.S. EPA) proposed revisions to its air dispersion modeling guidance, found in 40 CFR 51, Appendix W ("Guideline on Air Quality Models") that included replacing the Industrial Source Complex (ISC) model with the American Meteorological Society (AMS) / EPA Regulatory Model (AERMOD) as the regulatory ...
-
Screening method for regulatory purposes in the Argentine Republic
This paper presents a comparison between the screening method in accordance with the requirements of the Argentine regulations and the detailed screening procedures recommended by the United States Environmental Protection Agency (US-EPA). Both methodologies are applied to different scenarios of point sources in rural and urban areas. The intercomparison between both screening estimations is ...
-
Development of a low-rise industrial source dispersion model
In Japan, with amendment of the Air Pollution Control Law in May 1996, various substances, including benzene and trichloroethylene, were newly designated as hazardous air pollutants, and environmental standards were established. In this situation, it is necessary to develop a dispersion model that is applicable to environmental impact assessment of industrial areas with a complex of factory ...
-
Comparison of Two Dispersion Models: A Bulk Petroleum Storage Terminal Case Study
In 65 FR 21506 (dated April 21, 2000), the United States Environmental Protection Agency (U.S. EPA) proposed revisions to its air dispersion modeling guidance, found in 40 CFR 51, Appendix W (“Guideline on Air Quality Models”) that included replacing the Industrial Source Complex (ISC) model with the American Meteorological Society (AMS) / EPA Regulatory Model (AERMOD) as the regulatory default ...
-
Application of dispersion models in the environmental assessment process in the United Kingdom
The UK planning process has traditionally been separated from the licensing process as far as industry is concerned. Implementation of the Environmental Assessment Directive (85/337/EEC) has therefore been the responsibility of planners, not pollution regulators. This is one of the reasons why there are no formalised procedures for using dispersion models in the environmental assessment ...
-
A dispersion model intercomparison archive
The paper introduces a formal archive for intercomparison of conventional regulatory dispersion models. It stems from an initial intercomparison, for the UK Environment Agency, of the USEPA's ISC and AERMOD models with the ADMS model, in common use in the UK. The objective is to compare the models directly with one another via standard test cases in order to reveal differences that may arise in ...
-
Application of ASTM D6589 to evaluate dispersion model performance
During the development phase of an air quality dispersion model and in subsequent upgrades, model performance is constantly evaluated. These evaluations generally compare simulation results using simple methods that do not account for the fact that models only predict a portion of the variability seen in the observations. To fill a part of this void, the US Environmental Protection Agency (EPA) ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you