EPA dispersion model Articles
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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 ...
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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 ...
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`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 ...
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Dispersion of buoyant emissions from low level sources in urban areas: water channel modelling
A laboratory study was done to investigate dispersion of buoyant emissions from near surface sources in urban areas. Ground level concentrations under different surrounding building geometries were measured using a newly developed system based on laser induced fluorescence. In the presence of upstream buildings AERMOD (AMS/U.S. EPA regulatory dispersion model) is unable to explain concentrations ...
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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 ...
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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 ...
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`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 ...
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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 ...
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U.S. EPA Releases 1-Hour NO2 NAAQS Modeling Guidance
The U.S. EPA Air Quality Modeling Group (AQMG) recently released a new guidance document for NO2 modeling. The document outlines procedures that can be used to calculate the NO2 design values for comparison to the new 1-hour NO2 National Ambient Air Quality Standard (NAAQS). The new 1-hour NO2 standard of 100 ppb goes into effect on April 12, 2010. This 1-hour NO2 standard is based on the ...
By All4 Inc.
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Procedures Used by U.S. Environmental Protection Agency (U.S. EPA) to Develop and Adopt Newer Dispersion Models
This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the U.S. EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires U.S. EPA to publish a 'Modeling Guideline' and to hold a hearing every three ...
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Procedures used by the United States Environmental Protection Agency (US-EPA) to develop and adopt newer dispersion models
This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the US-EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires the US-EPA to publish a "Modelling Guideline" and to hold a hearing ...
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Modeling Tip: How Parallel Processing can Expedite Large AERMOD Model Runs
Due to advances in scientific knowledge, higher resolution raw data, stringent air quality standards, and changing regulations, environmental modeling is demanding more and more from EHS professionals and their computers. All of these influences have resulted in significantly longer AERMOD model run times as compared to the predecessor regulatory model, ISCST. Instead of minutes, AERMOD runtimes ...
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`Procedures Used by U.S. EPA to Develop & Adopt Newer Dispersion Models,` presented at the Harmonization within Atmospheric Dispersion Modeling for Regulatory Purposes, Rouen, FR
Abstract This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the U.S. EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires U.S. EPA to publish a "Modeling Guideline" and to hold a hearing ...
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States propose attainment designations for the new 1-hour So2 NAAQS
The U.S. EPA revised the primary National Ambient Air Quality Standard (NAAQS) for sulfur dioxide (SO2) on June 2, 2010 by implementing a new 1-hour standard of 75 parts per billion (ppb) (calculated as the three-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations). Based on an evaluation of the risks posed by acute exposure to SO2, EPA ...
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Federal transport rule — the “new cair” round 1
On August 2, 2010, EPA proposed the long- awaited replacement for the Clean Air Interstate Rule (CAIR), which was rejected in 2008 by the D.C. Circuit Court of Appeals. Now called the Transport Rule (TR) by EPA, the new rule revises the CAIR approach to conform with the court ruling. In this first version (Round 1) of TR, overall emission budgets for NOX are similar to the initial period in CAIR; ...
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