81. EnCoCo - Software For The Area Air Quality Control A firm headquartered in Lahaina, Hawaii, USA and offering air dispersion modeling software focused primarily upon the regulatory requirements of Germany. http://www.encoco.com

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82. Air Emissions Solutions From Pinchin Environmental A consultant group based in Mississauga, Ontario, Canada (with multiple offices in Canada) who offer air dispersion modeling services. The dispersion models utilized include Ontario Regulation 346 as well as these U.S. EPA models Screen3, ISCST3, AERMOD and PRIME. http://www.pinchin.net/services/air/air.htm#Dispersion

Home Services Air Emission ... Sites Air Emissions Air Emissions Group June 1st Reporting Deadlines Ontario Regulation 127/01 (Airborne Contaminant Discharge - Monitoring and Reporting) National Pollutant Release Inventory (NPRI) Client Services: Stack Testing Odour Sampling and Analysis Atmospheric Dispersion Modelling Air Permits and Airborne Contaminant Reporting ... Occupational Health and Safety Contact: For additional information contact Phillip Girard, P.Eng., Vice-President Air Emissions, Phone 905-712-6490, pgirard@pinchin.com Courses: Airborne Contaminant Discharge Monitoring and Reporting Atmospheric Dispersion Modelling Training - ISCPRIME Industrial Odour Control Strategies Presentations: Compliance and Recent MOE Initiatives (pdf) Regulatory Announcements: Air Emission Reporting Deadlines - June 1st Ontario Regulation 127/01 - Airborne Contaminant Discharge - Monitoring and Reporting, and National Pollutant Release Inventory (NPRI) Step by Step Guideline for Emission Calculation, Record Keeping and Reporting for Airborne Contaminant Discharge

83. Air Dispersion Modeling @ Www.Sweden.org Home air dispersion modeling (263), Subdirectories of air dispersion modeling Consultants (167), Software (51). Website related to air dispersion modeling http://www.sweden.org/Science/Environment/Air_Quality/Air_Dispersion_Modeling/

Home Air Dispersion Modeling (264) Subdirectories of Air Dispersion Modeling: Consultants Software Website related to Air Dispersion Modeling: The Aerospace Corporation The Environmental Systems division has developed a model validation program (MVP) for improving the toxic hazard dispersion models used at space vehicle launch sites (Cape Canaveral in Florida and Vandenberg Air Force Base in California). Launch cloud and atmospheric tracer data collected by the MVP were used to test and upgrade the predictions. Air Quality Control Company (AQCC) Founded in 1993 by the Municipality of Tehran, Iran, the primary role of AQCC is providing research, consultation, planning and implementation of services regarding air and noise pollution in Tehran. AQM Resource Centre The Air Quality Management (AQM) Resource Centre is maintained at the University of the West of England in Bristol, England. It provides much useful information, including brief descriptions of many British and USA air dispersion models. Atmospheric Dispersion Modeling Liaison Committee A United Kingdom committee of members from government departments and agencies, nuclear industries and research organizations. The committee's purpose is to review current understanding of atmospheric dispersion and to identify suitable models for use primarily in authorization or licensing, in the context of atmospheric discharges from nuclear industry activities.

84. Shell Engineering & Associates Dispersion Modeling Environmental management consultants located in Columbus, Missouri, USA. Their services include air quality monitoring; air permitting; and air dispersion modeling involved in evaluating the offsite consequences of accidental releases and of air toxics emissions. http://www.shellengr.com/Dispers.htm

Dispersion Modeling Air quality control agencies usually require that industries simulate the impact of an expansion within their plants by the use of dispersion models. Applications for permits must contain the modeling results. Shell Engineering and Associates, Inc. , has developed expertise in all types of computer models. The firm's range of experience includes modeling up to 100 stacks at once, and predicting their impact. Clients include almost every type of industrial plant: power plants, steel plants, charcoal plants, automobile plants, manufacturing industries, incinerators, refractories and iron ore pelletizing plants. The staff of Shell Engineering knows all EPA guideline models, and is especially adept at developing complete permitting packages. Modeling, coupled with expertise in monitoring and dealing with governmental agencies, will provide you with the information you need for virtually any case or permitting action in which you are involved. The permitting and dispersion modeling services typically include: Determining the impact of existing and new sources and assistance in obtaining necessary permits.

85. Science Environment Air Quality Air Dispersion Modeling Science Environment Air Quality air dispersion modeling Directory results Some web results for Air Quality air dispersion modeling http://world.ammissione.it/browse_/Science/Environment/Air_Quality/Air_Dispersio

World Directory Science Environment Search: Science Environment Air Quality Air Dispersion Modeling Directory results: Consultants Software The Aerospace Corporation - The Environmental Systems division has developed a model validation program (MVP) for improving the toxic hazard dispersion models used at space vehicle launch sites (Cape Canaveral in Florida and Vandenberg Air Force Base in California). Launch cloud and atmospheric tracer data collected by the MVP were used to test and upgrade the predictions.. Air Quality Control Company (AQCC) - Founded in 1993 by the Municipality of Tehran, Iran, the primary role of AQCC is providing research, consultation, planning and implementation of services regarding air and noise pollution in Tehran.. AQM Resource Centre - The Air Quality Management (AQM) Resource Centre is maintained at the University of the West of England in Bristol, England. It provides much useful information, including brief descriptions of many British and USA air dispersion models.. Atmospheric Dispersion Modeling Liaison Committee - A United Kingdom committee of members from government departments and agencies, nuclear industries and research organizations. The committee's purpose is to review current understanding of atmospheric dispersion and to identify suitable models for use primarily in authorization or licensing, in the context of atmospheric discharges from nuclear industry activities..

86. UAI Environmental, Inc. Has Extensive Experience In Performing Air Quality Model An environmental engineering and consulting firm based in Reading, Pennsylvania, USA that offers a range of air dispersion modeling services using models such as AERMOD, ISC3, CALMET, CALPUFF, CTDMPLUS, ALOHA and others. http://www.uaienvironmental.com/model.asp

Client Login Locations White Papers AQ Management Air Quality Monitoring Modeling Meteo. Monitoring Permitting General Air Innovative Strategies Related Services GIS/Info Services GIS Mapping MapInfo Reseller Data Management Data Analysis Software PlotALOHA RoseWorks RW Frequency Site Remediation Env. Management Prevention Water Quality D Services The UAI Environmental staff has extensive experience performing a variety of air quality modeling analyses.  The modeling staff consists of 5 meteorologists, having a total of over 40 combined years of experience with U.S. EPA modeling guidance and models, including the newest regulatory models in the final stages of approval: AERMOD, ISC-PRIME, and CALMET/CALPUFF. UAI Environmental provides a full line of dispersion modeling services, including EPA regulatory models and other specialized models.  The dispersion models that the modeling staff are familiar with include: AMS/EPA Regulatory Dispersion Model (AERMOD) Indsutrial Source Complex Models (ISC3, ISC-PRIME) CALMET/CALPUFF Modeling System CTDMPLUS/CTSCREEN Complex Terrain Models Integrated Gaussian Model (IGM) Fugitive Dust Model (FDM) SAFER Systems TRACE Hazardous Release Model ALOHA Hazardous Release Model Air quality dispersion modeling analyses are used to support many client initiatives: New and modified plant permit applications National Ambient Air Quality Standards (NAAQS) compliance demonstrations Preliminary assessment of post-MACT implementation residual risk Inhalation and Multiple Pathway risk analysis

87. Tuesday May 18, 2004 Astronomy And Telescopes Presents: ODP Search 1078691078 Top Science Environment Air Quality air dispersion modeling 264. A wide range of available air dispersion models will be acquired and evaluated. http://www.kyes-world.com/Environment/Air_Dispersion_Modeling.html

Sponsor This Site! 1078691078 3:24pm Tuesday May 18, 2004 the entire directory only in Top Science Environment Air Quality : Air Dispersion Modeling Categories: Consultants Software Sites: The Aerospace Corporation - The Environmental Systems division of the Aerospace Corporation has developed a model validation program (MVP) for improving the toxic hazard dispersion models used at space vehicle launch sites (Cape Canaveral in Florida and Vandenberg Air Force Base in California). Launch cloud and atmospheric tracer data collected by the MVP were used to test and upgrade the dispersion model predictions. Air Quality Control Company (AQCC) - Founded in 1993 by the Municipality of Tehran, Iran, the primary role of AQCC is providing research, consultation, planning and implementation of services regarding air and noise pollution in Tehran. AQM Resource Centre - The Air Quality Management (AQM) Resource Centre is maintained at the University of the West of England in Bristol, England. It provides much useful information, including brief descriptions of many British and USA air dispersion models. Atmospheric Dispersion Modeling Liaison Committee - A United Kingdom committee of members from government departments and agencies, nuclear industries and research organizations. The committee's purpose is to review current understanding of atmospheric dispersion and to identify suitable models for use primarily in authorization or licensing, in the context of atmospheric discharges from nuclear industry activities.

88. Home Looking for the best air dispersion modeling software (AerMod, ISCST3, ISCPrime, CalPuff, SLAB, INPUFF2, SCREEN3)? You ve found it! air dispersion modeling http://www.beeline-software.com/

Home Software Free Trial CalPuff Lite ... Orders Looking for the best air dispersion modeling software (AerMod, ISCST3, ISC-Prime, CalPuff, SLAB, INPUFF2, SCREEN3)? You've found it! BEE-Line Software PO Box 7348 Asheville, NC 28802 Phone: (828) 628-0636 Fax: (828) 628-0635 Air dispersion modeling... Click individual image to enlarge. ...it's easy with BEE-Line Software. BEE-Line Software provides quality air dispersion modeling software, training, and expert support. We pioneered PC modeling and have been the leaders in microcomputer air modeling software since 1982. Our years of experience in writing PC models and listening to our users makes our software the easiest to use. We have software and courses for all of your dispersion modeling needs, from industrial permitting to Title III's 112(r) RMP modeling. Our BEEST for Windows (ISCST3, ISC-Prime, AerMod) software is the industry leader in modeling software for state and federal permits. Our CalPuff Lite and Professional CalPuff interfaces make modeling long-range transport for Class I Areas easy. Click on the menu to the left for more information about BEE-Line's software, training and support. We welcome your suggestions and comments, (click on Information Request).

89. Stone Lions Environmental Corporation A consulting firm headquartered in Rolling Hills Estates, California, USA who offer services in air dispersion modeling, toxic chemical exposure evaluations, reconstruction of past environmental exposures, and specialized software. http://www.stonelions.com/homepage.htm

Stone Lions Environmental Corporation 950 Indian Peak Road #210 Rolling Hills Estates, CA 90274 Phone: (310) 377-6677 Fax: (310) 377-1172 e-mail address: info@stonelions.com Specialties: Air pollution control Toxic chemical exposure evaluations Hazardous waste management Reconstruction of past environmental exposures Air dispersion modeling Ambient air monitoring Litigation support Specialized software development Who we are Stone Lions Environmental Corporation was founded in April, 1993. We are an environmental consulting firm specializing in air pollution evaluations related to a variety of industrial facilities. In addition, we research potential health effects that result from community exposure to a wide variety of toxic chemicals. Much of our work is done in the context of complex civil litigation. Where we are Our primary offices are located in Rolling Hills Estates, California. We have affiliated operations in Houston, Texas. What we do We evaluate refining, petrochemical, and chemical operations, and the associated toxic exposure problems. We employ a variety of chemical engineering techniques to perform those evaluations. We develop emissions inventories, and analyze source and meteorological data in order to define current and past community exposures. We then integrate this data into a variety of computer models, which predict the atmospheric dispersion of toxic chemicals from the source of emissions. Our modeling protocols are consistent with EPA guidelines and standard air pollution engineering practices.

90. Lawyers.com - Community - Air Pollution Dispersion Modeling interested in or involved with air pollution dispersion modeling, you will find it most useful to read Error Propagation in air dispersion modeling at http http://www.prairielaw.com/messageboards/message.asp?channelId=21&subId=&mId=4315

91. AIR299 Professional Development Course. AIR299 AERMOD with PRIME air dispersion modeling. Taught over 36 air dispersion modeling Courses in the past 3 years. http://www.awma.org/events/Courses/AIR299/default.asp

Member Services Events Publications Education Professional Development Course AIR-299: AERMOD with PRIME Air Dispersion Modeling May 16, 2004, 8:00 a.m. - 5:00 p.m. (One-Day Course) Toronto, Ontario, Canada Promotional Overview: Air Quality Modelling: New Methods for a New Reality May 17-19, 2004, in Toronto, Ontario, Canada Objectives: 1. Give attendees a firm understanding of the essentials of AERMOD and its related components including AERMAP and AERMET. 2. Promote understanding of concepts with hands-on practice. 3. Provide insight on proper model interpretation. Understanding model results and is essential to performing proper analyses with refined air dispersion models. Outline: 1. Introduction ·Data requirements (meteorology, topography, receptors). ·Plume Rise, Building Downwash 2.Essential AERMOD Concepts ·Planetary Boundary Layer Theory and Turbulence Parameterization ·Complex Terrain ·Meteorological Data 3. Hands-on AERMOD

92. Air Quality Management Consulting environmental engineering firm located in St. Louis, Missouri, USA. Services include air dispersion modeling, air emission inventories, air permitting and compliance programs. http://www.npnenv.com/air_quality.htm

NPN Environmental's diverse air quality management team provides our clients extensive experience and knowledge stemming from multiple disciplines. Led by professional engineers, our air quality professionals include scientists, engineers, and technicians with formal education in chemistry, mathematics, industrial hygiene, and engineering. Because of our experience in multiple disciplines, NPN Environmental has an extensive working knowledge of industrial, commercial, chemical, and mining regulatory requirements. We couple in-depth expertise with qualified techniques for measuring and monitoring air pollution emissions and have established regulatory resources to facilitate and expedite solutions to your air quality needs. Permits and Compliance Programs NPN Environmental prepares permit applications and compliance programs that are fundamental to our clients' operations. Our team of professionals prepares air permit applications including Federally enforceable Title V Operating Permits, State Construction/Operating Permits, and various other permits required by State or local agencies. We proficiently develop compliance programs and strategies by using our extensive experience and knowledge of major Federal and State regulatory air programs. In addition, we expeditiously facilitate permit acquisition through our established regulatory resources.

93. Newsletter 13 - Using Air Dispersion Models Uses of Air Dispersion Models. air dispersion modeling is best used with specific protocols to avoid overly conservative predictions. http://www.sciences.com/whatsnew/newsletters/HEnewsletters/news13.html

Newsletter #13 (Summer 2001) Using Air Dispersion Models David R. Patrick, P.E., James Lape, M.S., and Rick Reiss, D.Sc. dpatrick@sciences.com, jlape@sciences.com, rreiss@sciences.com Background. Estimates of the indoor and outdoor concentrations of pollutants in the air often are needed. For example, the U.S. Environmental Protection Agency (EPA) is currently developing a program under Section 112(f) of the Clean Air Act to regulate excessive risks of hazardous air pollutants; risk estimates require exposure concentration estimates. In addition, many states regulate toxic air pollutants by requiring that ambient air concentrations not exceed specified health effects levels. While the need for air concentration data is common, obtaining that data can be difficult. First, measurement of the air concentrations associated with an adverse health effect often is difficult because the effects concentrations are low (e.g., parts per billion) or measurement techniques may not be available. Second, even when an adequate measurement technique is available, it provides results only at the time the technique is used; concentrations in the past or concentrations that may result from future installation of control technology or from accidents cannot be measured. Finally, long-term measurement programs can be expensive. Uses of Air Dispersion Models.

94. Casella Stanger Environmental consultants with multiple offices in England. Together with the University of Greenwich, Stanger operates a 24hour telephone helpline for air dispersion modeling. http://www.stanger.co.uk/default.asp?page=airqual/modelhlp/helpline.htm

95. SLCentral Directory - Science - Environment - Air Quality - Air Dispersion Model SLCentral Directory Science - Environment - Air Quality - air dispersion modeling. Consultants (167); Software (51). » The Aerospace http://www.slcentral.com/directory/index.php/Science/Environment/Air_Quality/Air

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96. Exponent- Water Resources & Atmospheric Sciences A firm of scientific and engineering consultants, headquartered in Menlo Park, California with multiple offices across the United States, whose services include air dispersion modeling. http://www.exponent.com/practices/hydrology/airquality.html

Home Practices : Atmospheric Sciences With a reputation for cutting-edge innovation in atmospheric sciences, Exponent has conducted a large number of studies investigating atmospheric phenomena and air pollution . Our expertise includes both litigation support and research and development studies. We are frequently called upon to investigate accidental releases of chemicals to the atmosphere, assess air pollution risks, simulate transport and fate of chemical substances, and develop measures of prevention and control, such as emergency preparedness and response. Clients benefit from our multidisciplinary approach, which includes the support of chemical engineers, combustion specialists, atmospheric modelers, and experts in health effects of air pollution. Our services include: Computer modeling of plume dynamics Visualization, animation, and GIS

97. About D&E Technical D E Technical is an environmental engineering and software development company located in Champaign, Illinois, USA. Their services include air dispersion modeling and hazard analysis. http://www.detech.net/aboutde.htm#Air

Computer Software Development Building Analysis . We are interested in your business and we are confident that we will be able to provide you with quick results at an affordable price. Dispersion Modeling and Hazard Analysis - click here for more details, Regulatory analysis, Title V permitting, Emissions inventories, Compliance strategy analysis, Control technology selection and costing. Support of the The Air Compliance Advisor (ACA) software model, including: -Training -General Consulting RETURN TO THE TOP Computer Software Development Scientific and engineering applications for the Microsoft Windows platform, C++ programming, including Microsoft Foundation Classes (MFC), including OLE, Visual Basic programming, and FORTRAN programming. RETURN TO THE TOP Building Analysis Indoor air pollution modeling, and Building energy analysis. RETURN TO THE TOP Revised: March 07, 1999

98. Dispersion Modeling Air Quality and Comparative Exposure A ParcelLevel Cumulative Risk Analysis in Providence, Rhode Island. air dispersion modeling. http://www.envstudies.brown.edu/thesis/2002/moeller/CompExpAna/DispersionModelin

Air Quality and Comparative Exposure: A Parcel-Level Cumulative Risk Analysis in Providence, Rhode Island AIR DISPERSION MODELING DEFINITION According to the Environmental Protection Agency ( USEPA) , dispersion modeling is "a mathematical representation of the transport and diffusion processes that occur in the atmosphere." is the model currently used by USEPA for regulatory screening of new permit applications and New Source Review. SCREEN3 is based on Gaussian plume algorithms and estimates worst-case scenario ambient impacts from point, volume, and area sources by incorporating general meteorological conditions . USEPA uses this model as a conservative first run screening tool, followed by more refined modeling in areas determined by SCREEN3 to be of potential concern. Inputs to SCREEN3 include a choice of source type (point, flare, volume or area source), urban or rural terrain, emission rate, and building size. If the source has a stack, stack height, stack diameter, exit velocity, flow rate, and exit temperature must also be included. Output from the model comes in the form of a dispersion curve showing the change in chemical concentration as distance from the facility increases ( see example SCREEN3 output ). The model incorporates worst case meteorology by determining which combination of wind speed and stability class combines with facility information to create the worst case weather scenario.

99. Products A consulting firm located in Dunum, Germany who develop and market air dispersion modeling software, such as LASAT, a Lagrangian dispersion model; IBJplume, a Gaussian model; IBJXodor; a model specifically for odor dispersion. http://www.janicke.de/htm/e_products.htm

www.janicke.de / Products Products Software Dispersion calculations Development of new models Software program brief description purchase price (EUR, no tax included) LASAT Lagrangian dispersion model according to the german guideline VDI 3945/3. Program system with a broad range of applications (e.g. calculations in structured terrain, use of nested grids, calculations according to TA Luft 2002, graphical user interface for result visualizations). See LASAT order Single-computer licence including one-year support service One-day installation and introduction (inside Germany) Support service for one year (phone and eMail hotline) Update on demand Leasing on demand IBJxodor Stationary plume model for the calculation of odor frequencies in plane terrain in agreement with the draft of the german guideline VDI 3788/1. Valid also for low sources and small source distances. Handling of weather statistics. For further informations see Public/Programs order on demand IBJmepod Graphical user interface for IBJxodor (definition of input parameters, program control, graphical display of the results, help functions,...). order on demand IBJparticle Lagrangian dispersion model according to the german guideline VDI 3945/3. Time dependent and stationary dispersion calculations in plane and complex terrain (one source, one trace element). With source code (GNU licensed).

100. Background Air Quality and Comparative Exposure A ParcelLevel Cumulative Risk Analysis in Providence, Rhode Island air dispersion modeling. http://www.envstudies.brown.edu/thesis/2002/moeller/Background/Air_Models.htm

Air Quality and Comparative Exposure: A Parcel-Level Cumulative Risk Analysis in Providence, Rhode Island AIR DISPERSION MODELING Models can be used to aid in demonstrating environmental compliance, analyzing process changes and evaluating the impacts of accidental releases. Air dispersion models are used to estimate the downwind concentration of pollutants emitted by various pollution sources from industrial sources. Dispersion models are typically used to demonstrate compliance regulatory standards. Decision makers can compare exposures to some benchmark (state regulatory thresholds or a level with a known health effect.) The principal framework of empirical equations to estimate pollutant dispersion uses three dimensions (crosswind, downwind, and vertical) and assumes concentrations from a continuously emitting plume are proportional to the emission rate . The model assumes that these concentration are diluted by the wind at a rate inversely proportional to the wind speed, and that the one-hour average pollutant concentrations near the source are explained by the Gaussian distributions

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