Surf these sites: AIRWARE software -- Model-based information and decision support system for air quality assessment and management, supporting the implementation of European and national environmental legislation. Acu Tech -- A nation-wide consultant firm specializing in process safety and risk management services, training, and software. AcuTech makes use of dispersion modeling programs: ALOHA, ARCHIE, DEGADIS, HGSYSTEM, SLAB, TSCREEN, and PHAST. Air Dispersion Modeling, Inc. -- A firm in Oakton, Virginia selling a line of air pollution dispersion modeling software that includes: ISC View, RMP View, SCREEN View, SLAB View and SLAB View 3D ... all of which are U.S. EPA models adapted for use with Windows by Lakes Environmental. AirNova Inc. -- Services include stack testing, stationary source isokinetic sampling, continuous emission monitoring, compliance permitting, air toxics pollution emission sampling, ambient air quality dispersion modeling. Located in Pennsauken, New Jersey, USA. Aircraft Exhaust Plume Model -- The model PARANOX (PArametrization of Aircraft emitted NOX) was developed by the Netherlands Meteorological Institute to describe the chemical processes and dispersion of an aircraft exhaust plume at cruising altitude. Applied Modeling Inc. (AMI) -- Consultants in Southern California who offer services in: dispersion modeling (using ISCST3 model); regional air quality modeling (for ozone and for particulate matter); urban airshed modeling; and accidental release modeling (using ALOHA, CAMEO, SLAB, DEGADIS and SCREEN models). BEE-Line Software -- Provider of air dispersion modeling software with training and technical support. Specializes in creating user-intuitive versions of EPA air dispersion models for application in the Windows environment. BlazeTech Corporation -- Consultants (in Cambridge, MA, USA) with expertise in: air dispersion modeling, off-site consequence analysis, fire and explosion, and other safety problems. For dispersion modeling, the firm uses ADORA (Atmospheric Dispersion of Reacting Agents) ... a model with complex thermodynamics and chemical reactions. CAMEO -- Computer-Aided Management of Emergency Operation (CAMEO) is a software package developed by NOAA (U.S. National Oceanic and Atmospheric Administration) and U.S. EPA (Environmental Protection Agency), for planning responses to chemical accidents. Includes the ALOHA (Areal Location of Hazardous Atmospheres) dispersion model for neutrally buoyant or heavier-than-air gases. Cambridge Environmental Research Consultants -- Scientific consultants in the field of atmospheric dispersion located in Cambridge, England.. They offer a range of air dispersion models including: ADMS 3 for dispersion of industrial emissions; ADMS-SCREEN for initial screening studies of emission dispersion; and GASTAR for dispersion of accidental dense gas releases. Dyadem Imternational, Ltd. -- A software development company in Toronto, Canada that also provides a full range of risk management consulting services. They offer software for Risk Analysis, Process Hazard Analysis (PHA), HAZOP, Failure Modes and Effects Analysis (FMEA), and Risk Management Plans (RMP). ENSR: Environmental Consultants and Engineers -- A worldwide environmental service company that has developed: dispersion models that accommodate complex terrain and aerodynamic downwash; visibility models; hazardous air pollutant dispersion models; and others for facilities located in dispersion environments where standard models are inaccurate. ENVIRON: Environmental Consultants -- A nation-wide firm (in the U.S. and England) offering services in: dispersion modeling of emissions from industrial plants and hazardous waste sites; air toxics impact studies; air pollution compliance assistance; emergency release modeling and consequence analysis; regional modeling of photochemical reactive plumes and of particulate matter; and visibility models. Earth Tech -- A worldwide environmental consultant firm, headquartered in Long Beach, California, whose modeling group are recognized experts in air dispersion modeling. They have developed or enhanced many models (CALPUFF, CALMET, CALGRID, BLP, ISC3, CTDMPLUS, OCD, and KSP), several of which are now U.S. EPA ''Guideline'' models. Electricite de France (EDF) -- EDF has developed the MERCURE model for small-scale dispersion in complex situations, and which can cope with the effects of sea and slope breezes, urban heat islands, complex topography, buildings and other obstacles, etc. MERCURE provides 3D solutions to the general equations for fluid mechanics applied to atmospheric flow and has been validated in a number of test cases. Engineering Technology, Inc. -- A research and development firm that has developed the TDR dispersion model (Transport, Diffusion, and Radiance) using Gaussian plume and puff methodology to model the transport and dispersion of single or multiple atmospheric releases in a variety of environmental conditions and complex terrain features. Enviroware s.r.l. -- These consultants provide a number of air dispersion models. The site''s "People Finder" section has a useful list of names, postal addresses and e-mail addresses of people involved in the environmental sciences and in air dispersion modeling. The site also provides an online Gaussian dispersion model called Tox-Flam, for releases of inert buoyant pollutants into a mixing layer of a user-specified height. IMMPROG Dispersion Models -- A set of dispersion models developed by AirInfo Gmbh, Switzerland to meet the recommendations of the Swiss and German meteorological services. All of the models are Gaussian and they include: a point-source model; a line-source model for vehicles on roads in open terrain and in city street canyons; and an odor dispersion model. Imes Engineering Companies -- Dispersion modeling services for: supporting existing air permits; compliance of new sources with ambient air standards; and offsite consequence analyses for RMP release scenarios. Models utilized include: U.S. EPA''s ISCLT and ISCST for permit and other applications; and PHAST for determining flammable or toxic effects. Lakes Environmental -- Provides easy-to-use air dispersion and risk assessment modeling software for Windows. Their air pollution dispersion modeling software includes: ISC-AERMOD View, RMP View, SCREEN View, and SLAB View, all of which are U.S. EPA models adapted for use with Windows. Training and technical support are also provided. Lehder Environmental Services -- A Canadian consulting firm offering services in air dispersion modeling (including odor dispersion), stack sampling, and environmental permitting. Most of Lehder''s modeling work for clients utilizes the U.S. EPA''s Industrial Source Complex Short Term Model Version 3 (ISCST3). MSES Consultants -- An environmental consulting firm providing services in the areas of planning, engineering, safety, industrial hygiene, the earth and environmental sciences, design and regulatory assistance. The firm is located in Clarksburg, West Virginia. Metbase -- This company offers for sale an extensive database of surface and upper air meteorological data files. Many of the files for the United States and Canada are preformatted for direct use in air dispersion models such as ISC and AERMOD. Custom-formatted data sets are also developed upon request. Metbase is part of the Ortech Corporation, headquartered in Ontario, Canada. Meteorological Solutions Inc. -- Air quality consultants (located in Salt Lake City, Utah) who provide a comprehensive range of air dispersion modeling services. The site includes links to the specifics of their various services as well as to a listing of the names, email addresses, and experience of their key people. North American Weather Consultants -- Meteorological consultants (located in Salt Lake City, Utah) who offer extensive experience in performing dispersion modeling for: simple, complex or intermediate terrain; single or multiple emission points; and buoyant or dense gas releases. Northern Environmental and Monitoring Services (N.E.M.S.) -- NEMS offers environmental, health and safety consulting services and their dispersion modeling expertise ranges from single stacks to multiple sources, spills and traffic pollution. NEMS uses the UK Atmospheric Dispersion Modeling System (ADMS). Their modeling has included: power plant emissions; cooling tower plume visibility; explosion risk assessments; and odor abatement. Online Gaussian Dispersion Model -- Industrial Hygiene on the World-Wide Web consists of interactive industrial hygiene calculators for the occupational safety and health professional, including an online Gaussian dispersion model which is freely available for use by site visitors. The site is maintained by Grady Russell. Online Version of SCREEN3 Model -- This site is maintained by Pacific Environmental Services who developed an online version of the U.S. EPA''s SCREEN3 air dispersion model, which is freely available for use by any visitor to the site. Pacific Environmental Services (PES) -- Nationwide company headquartered in Herndon, Virginia. The PES modeling section specializes in developing, evaluating, and applying air pollution dispersion models. PES was involved in developing the U.S. EPA''s dispersion models, such as ISC3, SCREEN3, and SCREEN. PES has also been involved in developing the new AERMIC Model (AERMOD), to be proposed by EPA as a regulatory model. Power Technology -- The engineering and scientific center of PowerGen UK plc. They use various models to simulate gas and dust dispersion and deposition from: industrial chimneys, stockpiles, fugitive sources, accidental releases, cooling tower plumes, and acid rain. The models include: ADMS (Atmospheric Dispersion Modeling System), VISPACT (an in-house cooling tower model), MATADOR (UK acid rain model), and U.S. EPA models. RTP Environmental Associates -- Dispersion modeling studies performed by RTP have involved rural and urban environments, simple single-point sources, complex multi-source industrial and urban applications, simple flat terrain, complex topography, and various time and spatial scales from short-term analyses to multi-year average statistical assessments over distances of several meters to several hundred kilometers. Risk & Industrial Safety Consultants (RISC) -- Risk & Industrial Safety Consultants, Inc. is a small, company (recently acquired by Trinity Consultants) originally established for conducting research and development, and providing safety consulting and risk assessment services to the petroleum, chemical and natural gas industries, and other consulting organizations. RISC has developed a number of dispersion models specifically for modeling releases of liquefied natural gas (LNG), liquefied petroleum gas (LPG) and natural gas. Tech Environmental Inc. (TEI) -- Located in Waltham, Massachussetts, TEI provides consulting for air quality and noise issues. Their services include: permit applications; siting and feasibility studies; environmental impact assessments; and technical support tasks such as air dispersion and noise modeling, planning, and monitoring. The AUSPLUME Model -- Describes the AUSPLUME model developed in about 1986 by the Environmental Protection Authority of Victoria, Australia. The AUSPLUME model is an adaptation of the U.S. EPA''s ISCST model (Industrial Source Complex Short Term model). Copies of the model can be purchased from the Victorian Environmental Protection Authority. The Air Group -- Consultants in Dallas, Texas who offer air permitting and compliance services, air dispersion modeling, and training workshops. The AirQUIS Model -- The Norwegian Institute for Air Research (NILU) has developed an Air Quality Information System (AirQUIS) having: an emission inventory data base; dispersion models; and a geographical information system (GIS) module. The dispersion models include a source oriented model (EPISODE), a puff-trajectory model, and models for traffic in street canyons and on roads (ROADAIR and CONTILENK). The CHARM Model -- The Complex Hazardous Air Release Model (CHARM), developed by Radian International, is for emergency response or planning involving hazardous chemical releases into the atmosphere. It predicts the movement and concentration of release plumes and provides various graphical outputs such as: concentration footprints; heat radiation footprints of a pool fire; and overpressure contours from vapor cloud or container explosions. The Indic-Airviro System -- The Swedish Meteorological and Hydrological Institute (SMHI) developed a modularized air dispersion modeling system. The system has: a module for receiving input data from monitoring stations; an emission data base module; and a dispersion modeling module. The dispersion module has a Gaussian model for small-scale applications, a grid model for large-scale regional applications, a street canyon model for emission sources surrounded by buildings, and a dense gas module for heavier-than-air gases. The MIDAS Models -- Dispersion models, offered by PLG Inc. (located in Bethesda, Maryland), for routine and accidental airborne releases of hazardous materials. Versions available for: industrial releases of hazardous chemicals; nuclear facility radioactive releases; and response to chemical or biological releases by terrorists. Built-in dense gas and evaporation plume models. Real-time displays of the dispersing plume on site-specific maps. The OML Model -- A Gaussian plume model developed by Denmark''s National Environmental Research Institute (NERI) that is recommended for environmental impact assessments of any planned new industrial sources. The model can be used at distances up to 20 km for high or low sources, one or more point sources, or area sources. It is not suitable for complex terrain and it requires input data on emissions and meteorology on an hourly basis. The Pilot Group -- Consultants based in Dallas, Texas who offer dispersion modeling services for: air toxic evaluations and risk assessments; demonstrating compliance with air quality standards; evaluation of accidental releases; stack height studies; new facility site selection; visibility studies, etc. Trinity Consultants -- Services offered include dispersion modeling, emission inventories, air quality permitting, risk assessments, etc. Also offer a range of dispersion modeling software for use in the Microsoft Windows environment ... as well as training courses and support for those models. YSA Atmospheric Modeling -- Yamada Science & Art Corporation (YSA) specializes in computer modeling of atmospheric airflows and the dispersion of airborne materials over complex terrain. YSA developed, markets, and provides user support for the three-dimensional atmospheric models HOTMAC and RAPTAD. Zephyr Environmental Corporation -- An environmental consulting firm with a range of air dispersion modeling services, including: simple and complex terrain modeling; line and mobile source modeling; and modeling of accidental dense gas releases. Zephyr utilizes U.S. EPA models such ISCST3 and SCREEN3; and public domain models such as SLAB and RMP-COMP.
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