Consultants Air Dispersion Modeling Air Quality

In the context of this "Air Dispersion Modeling/Consultants" category, air dispersion models may be defined as computerized mathematical calculations for predicting the dispersion behavior of air pollutants emitted into the atmosphere. In the same context, consultants are those who offer air dispersion modeling services. Such consultants may be governmental agencies, research institutes, university faculty and post-graduate students, environmental consultants, industrial dispersion modeling practitioners, and pollution meteorologists. The many types of air dispersion models include those for modeling: the continuous emission of buoyant pollutant plumes; the non-continuous accidental releases of either buoyant or heavier-than-air (i.e., dense gas) pollutants; puff emissions; point-source emissions; area-source or line-source emissions; mobile transportation-source emissions; fire and smoke emission models; etc.

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• 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, USA.
  
• Keramida Environmental, Inc. - An environmental consulting firm based in Indianapolis, Indiana, USA whose air quality services include: emission inventories, air permitting, risk management plans, and air pollution dispersion modeling.
  
• Preston Engineering - An environmental consulting firm headquartered in Davenport, Iowa, USA, whose services include air pollution dispersion modeling.
  
• EXSIM - Shell Oil and Tel-Tek offer consulting studies involving the EXSIM mathematical model that predicts the overpressure (explosion) generated by the accidental release and ignition of a gas cloud in a congested area of an industrial plant onshore, or offshor
  
• Enviroplan Consulting - A consulting firm (headquartered in Fairfield, New Jersey, USA) that offers services in air dispersion modeling, air quality and meteorological monitoring, air pollution emissions estimation, permitting and compliance plans, hazard assessments and risk ma
  
• D'Appolonia S.p.A. - Engineering consultants and designers based in Genoa, Italy whose services include risk assessment studies and industrial air pollution dispersion modeling.
  
• Justice Associates - An environmental consulting firm based in Long Beach, California, USA (with branch offices in Las Vegas, Nevada and Chicago, Illinois) whose services include air dispersion modeling.
  
• Sage Environmental Services - An environmental consulting company based in Texas (with offices in Richardson, Austin and Beaumont) who offer services in air dispersion modeling, air permitting and compliance, risk management plans and offsite consequence analyses.
  
• Katestone Scientific Pty. Ltd. - Consulting firm based in Brisbane, Australia that offers air quality assessment and odour science.
  
• BlueScape Environmental - Located in San Diego, California, the air quality consulting services offered by this firm include air dispersion modeling, offsite consequence analyses, air permitting, toxic emission evaluations and risk assessments. Models used include: ISCST3, CALPUFF
  
• ABS Consulting Inc. - An international firm (headquartered in Houston, Texas, USA) providing engineering, and technological services for analyzing and managing hazards, risk, and safety as well as minimizing environmental impacts. Their air dispersion models, offered from th
  
• Earthguard Environmental Group Inc. - Earthguard Environmental is a consulting firm (based in Richmond Hill, Ontario, Canada) that provides services for development, evaluation and application of air dispersion models using EPA and other regulatory models as well as specialized models designe
  
• 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.
  
• ExCAL Ltd - A firm of environmental consulting engineers and scientists (based in South Wales, UK) whose services include atmospheric dispersion modelling.
  
• Tech Environmental Inc. (TEI) - Located in Waltham, Massachusetts, USA, 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 disper
  
• Stanley Consultants, Inc. - An environmental consulting firm based in Coralville, Iowa, USA and a subsidiary of the Stanley Group. Their services include air permitting, risk management plans, emission inventories and air dispersion modeling.
  
• Vector AS - Vector AS is based in Tønsberg, Norway and offers air dispersion modeling using WindSim, which is a flow and dispersion simulator for complex terrain using computational fluid dynamics (CFD).
  
• Steigers Corporation - An environmental consulting firm (located in Littleton, Colorado, USA) whose services include air dispersion modeling.
  
• Rogers and Callcott - An environmental consulting firm (located in Greenville, South Carolina, USA) whose services include air dispersion modeling, air permitting and air toxics evaluations.
  
• Liaise Environmental, Inc. - A consulting firm based in Dallas, Texas, USA offering air quality permitting and related environmental services including air dispersion modeling.
  
• Meteorological Solutions Inc. - Air quality consultants (located in Salt Lake City, Utah, USA) who provide a range of air dispersion modeling services. Includes links to the specifics of their various services as well as to a listing of the names, email addresses, and experience of thei
  
• GexCon AS - A consulting group in Norway that uses a CFD program called FLACS to model the dispersion of leaks (on offshore oil drilling platforms) as well as their subsequent ignition and explosion. Far field blast effects (up to two kilometers away) from such explo
  
• 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
  
• XCG Consultants Ltd. - An environmental consulting firm with headquarters and other offices in Ontario, Canada as well as Cincinnati, Ohio, USA. Their services include air dispersion modeling.
  
• EngConsult: - A consulting firm based in Brampton, Ontario, Canada (with an office in Dhaka, Bangladesh) whose services include air dispersion modeling.
  
• Dessau-Soprin - A firm of engineering and construction consultants, headquartered in Montreal, Canada, whose air quality services include air dispersion modeling.
  
• PPM Consultants Inc. - Environmental consultants based in the south and southeastern United States (Louisiana, Alabama, Mississippi and Florida) whose services include air dispersion modeling, air permitting, risk management plans, and emission inventories.
  
• Theakston Environmental Control, Inc. - Environmental consultants located in Ontario, Canada whose services include physical modeling as well as computer modeling of stack exhaust gas dispersion and dust dispersion.
  
• Air Resource Specialists Inc. - Located in Ft. Collins, Colorado, USA, this firm provides comprehensive air modeling, permitting, and compliance support to industrial, commercial, and government clients.
  
• Pollution Control Consultancy and Design - An acoustical and environmental engineering consulting firm based in Sydney, Australia that provides a range of services which includes air dispersion modeling.
  
• Enstec Services - Environmental consultants, headquartered in Cambridge, England, whose services include numerical air dispersion modeling as well as wind tunnel modeling
  
• RTP Environmental Associates - RTP has offices nationwide in the USA and has performed modeling studies for: rural and urban locations; single-point sources; complex multi-source industrial sources; flat terrain; complex terrain; and time and spatial scales from short-term to multi-yea
  
• Yamada Science & Art Corporation (YSA) - Santa Fe, New Mexico. Specializes in computer modeling of atmospheric airflows and the dispersion of airborne materials over complex terrain. Develops, markets, and provides user support for the three-dimensional atmospheric models HOTMAC and RAPTAD.
  
• Aspen Environmental Group - An environmental consulting company based in Agoura Hills, California, USA whose services include air dispersion modeling and air quality impact assessments, air permitting, air toxics studies, and risk assessments.
  
• Cermak Peterka Peterson Inc. (CPP) - A wind engineering consulting firm (located in Fort Collins, Colorado, USA) that offers wind tunnel modeling of pollutant transport and dispersion involving complex building and terrain situations.
  
• Applied Modeling Inc. (AMI) - Consultants (in Woodland Hills, California, USA) 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, C
  
• Secor International Inc. - An engineering consulting firm headquartered in Redmond, Washington, USA (with other offices nation-wide) whose services include air quality management and regulatory compliance.
  
• ATMET - Environmental and meteorological consultants located in Boulder, Colorado, USA whose services include air pollution dispersion modeling, emergency response modeling, long range transport, and applied atmospheric research.
  
• Mike Lyons and Associates - Consultants located in Balwyn, Victoria, Australia. Services offered include air pollution plume dispersion modeling using the Australian EPA's latest "AUSPLUME" package as required under the State Environment Protection Policy (SEPP).
  
• Iris Environmental - Consulting and engineering firm based in Oakland, California, USA whose environmental management services include air dispersion modeling.
  
• Carter Lake Consulting, LLC - A professional environmental consulting company headquartered in Whitman, NE, USA, providing air quality regulatory services, permitting and modeling, to industries throughout the western U.S.
  
• Conversion Technology Inc. - A firm of environmental, health and safety consultants based in Norcross, Georgia, USA whose services include air dispersion modeling, air permitting and compliance, and air toxics assessments.
  
• REC Ltd. - REC Ltd. is a consultancy whose air quality services include emissions monitoring, stack testing, and air dispersion modeling. The REC headquarters are in Manchester with satellite offices in Glasgow, Edinburgh, Leeds, Birmingham and Braintree.
  
• Applied Environmental Consultants, Inc. - Consultants located in Tempe, Arizona, USA who provide air dispersion modeling in support of air quality permitting and impact analyses as well as air quality regulatory compliance.
  
• KCL Environmental Research Group - The Environmental Research Group (ERG) is part of Kings College London and a provider of dispersion modelling assessments for regional and local authorities, the UK Environmental Agency and private companies.
  
• EnCoCo - A firm headquartered in Lahaina, Hawaii, USA and offering air dispersion modeling software focused primarily upon the regulatory requirements of Germany.
  
• Primatech, Inc. - A consulting firm based in Columbus, Ohio, USA and with multiple offices in North America. Their services include: process hazard analyses; source term calculations; air dispersion and consequence modeling; and probability modeling. They also market propr
  
• WebMET - WebMET is a repository of meteorological data for air dispersion models such as ISCST3, ISC-PRIME and AERMOD, as well as for digital elevation terrain data. The data covers the entire United States and can be downloaded free of charge. The site is sponso
  
• Air Consulting and Engineering Solutions (ACES) - Environmental engineering consultants located in Houston, Texas, USA whose services include air permitting, air pollution control, Clean Air Act compliance, and air dispersion modeling.
  
• The Weinberg Group - A scientific and regulatory consulting firm, headquartered in Washington,DC, whose services include air dispersion modeling.
  
• Dispersoft Consultants Inc. - A consulting firm headquartered in Sillery, Quebec, Canada, that offers service in air pollution dispersion modeling as well as other unrelated fields.
  
• Slovnaft VURP - An applied research institute located in Bratislavia, Slovak Republic whose services include air dispersion modeling using the CFD program called Fluidyn-PANACHE.
  
• Mactec - Headquartered in Alpharetta, GA, USA, with other offices nationwide, Mactec's engineering and consulting services include air pollution dispersion modeling in support of their environmental services.
  
• Transoft International - A multinational company, based in St. Denis, France, offering technology solutions and consulting services in the field of computational fluid dynamics including air dispersion modeling for environmental impact studies, accidental releases, and risk asses
  
• ADM Ltd - A consultancy based in Farnham, Surrey, England whose air quality, noise and odour services include air pollution dispersion modelling.
  
• Vision Environmental, Inc. - Environmental consultants based in Massachusetts and Michigan in the USA. Their services include the use of air dispersion modeling for risk assessments, air permitting and air toxics evaluations.
  
• McVehil-Monnett Associates - An air quality consulting firm, headquartered in Englewood, Colorado, USA with other offices in Arizona and Wyoming. Their services include air dispersion modeling for determining: ambient impacts for permitting industrial sources, impacts of cooling tow
  
• PCR Services - An environmental consulting firm based in Southern California, USA, whose services include air dispersion modeling, stationary source permitting, and emission inventories, allotments, and mitigations.
  
• Aromatrix Pte Ltd - An odour control/abatement/design consultancy located in Singapore whose services include air dispersion modeling.
  
• Davis & Floyd - A firm of engineering and environmental consultants based in Greenwood, South Carolina, USA whose services include air dispersion modeling for: air permitting, evaluating toxic air emission impacts, evaluating compliance with air quality standards, and ri
  
• Heggies Pty Ltd - A multi-discipline firm of consulting engineers and scientists with headquarters in Sydney, Australia, whose services include air dispersion modeling and other aspects of air quality.
  
• P & I Design Ltd. - A chemical engineering and environmental management consultancy located in Stockton-on-Tees, England. They have developed a basic Gaussian dispersion model implemented with Microsoft's Excel spreadsheet program.
  
• DNV - Det Norske Veritas (DNV), headquartered in Oslo, Norway, is an international consulting firm with numerous offices worldwide. Their primary focus is on safety, environmental, risk management, and consequence analyses using their own PHAST dispersion model
  
• Indian Institute of Technology - The Centre for Atmospheric Sciences is a research and consultancy group within the Indian Institute of Technology at Delhi, India that offers atmospheric dispersion modeling.
  
• Air Quality Services - Based in Evansville, Indiana, USA, with additional offices in the states of Tennessee and Florida, the Air Quality Services firm offers consulting services including air dispersion modeling, ambient air monitoring, air permitting and emission inventories.
  
• Regulatory Compliance Partners - A consulting firm (based in Baton Rouge, Louisiana, USA and Houston, Texas, USA) whose services include air dispersion modeling, risk management plans and emergency response plans.
  
• Entech Engineering - A consulting firm based in Westboro, Massachusetts, USA who provide technical support and computer software to the nuclear power industry in the areas of radiological engineering, and atmospheric dispersion of radioactive effluents.
  
• The Airshed - A consulting firm based in East Linton, Lothian, Scotland that specializes in air quality, odour and noise projects.
  
• Atlantic Environmental Technologies, Inc. - An environmental engineering and sciences company, based in Sandwich, Massachusetts, USA, whose air quality services include dispersion modeling.
  
• O'Connor Associates - An engineering and consulting company headquartered in Calgary, Alberta, Canada (with multiple offices across Canada) whose air quality services include air dispersion modeling.
  
• Brenk Systemplanung GmbH - An environmental engineering and consulting firm based in Aachen, Germany whose services include air dispersion modeling.
  
• Murray & Trettel Inc. - A firm of certified consulting meteorologists (located in Northfield, Illinois) whose environmental services include air dispersion modeling.
  
• Air Noise Environment Pty. Ltd. - Environmental consultancy based in Brisbane, Australia specializing in stack emission testing and air dispersion modeling using AUSPLUME, CAL/AUSPUFF, ISC3, TAPM and AERMOD with particular emphasis on air dispersion from tunnels.
  
• Sullivan Environmental Consulting - This firm (located in Alexandria, Virginia, USA) offers services including urban scale air quality assessment, exposure assessment, permit support, air quality modeling, and risk management planning.
  
• O'Brien and Gere - A firm of environmental consultants and engineers with corporate headquarters in Syracuse, New York and other offices nation-wide in the USA as well as Canada and the UK. Their services include air permitting, air regulation assistance and air dispersion
  
• Trinity Consultants - A consulting firm based in Dallas, Texas, USA whose services include consulting, software, and training in the fields of air quality, dispersion modeling, permitting, compliance, Clean Air Act, environmental management information systems and industrial
  
• Odour Monitoring Ireland - Odour abatement specialists located in Trim, County Meath, Ireland whose services include air and odour dispersion modelling using ISCST3, AERMOD, ADMS3.1 and Calpuff.
  
• Arup - A worldwide engineering firm (with home office in London, England) whose environmental services include air dispersion studies using the AERMOD and UK-ADMS models.
  
• Consulting Air Pollution Modelers - A consulting group (located in North Clayton, Victoria, Australia) who provide: air pollution dispersion and consequence modeling services; complex terrain modeling; meteorological services; and training in dispersion modeling. The models used include AU
  
• Consultants on Air Resources Management - A firm based in Hungary that provides atmospheric environmental impact assessments for Central Europe based on local meteorological data and relevant models.
  
• 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.
  
• Cambridge Environmental Inc. - A group of environmental consultants headquartered in Cambridge, Massachusetts, USA. Their services include the use of air dispersion modeling in support of health risk assessments.
  
• El Dorado Engineering - A consulting and design firm (located in Salt Lake City, Utah, USA) whose services include air dispersion modeling.
  
• Environmental Quality Management Inc. (EQ) - A consulting firm based in Cincinnati, Ohio (with multiple offices across the USA) that provides environmental engineering and air quality services including permitting, compliance studies, NSPS reviews, and air dispersion modeling.
  
• Bison Engineering, Inc. - An environmental engineering firm headquartered in Helena, Montana, USA, whose services include: air dispersion modeling; air emission inventories, air permit applications, and risk management plans (RMPs).
  
• Jim Clary & Associates - Consultants, based in Dallas, Texas, USA, whose air quality consulting includes dispersion modeling services.
  
• The Titan Group - Consultants based in Carrollton, Texas, USA 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
  
• EMCo Air Quality Consultants Ltd - A firm of air quality consultants, based in Reading, England, whose services include atmospheric dispersion modelling.
  
• Enviroware s.r.l. - These consultants, located in Italy, provide a number of air dispersion models. Includes an online Gaussian dispersion model called Tox-Flam, for releases of inert buoyant pollutants into a mixing layer of a user-specified height.
  
• JBR Environmental Consultants - A regional consulting firm, headquartered in Sandy, Utah, USA and with other offices in the states of Nevada and Idaho, whose services include: air pollutant dispersion modeling, emission inventories, air permitting, and risk management.
  
• Omni Environmental Associates - An environmental consulting firm based in North Carolina whose air quality services include air permitting, compliance studies and air dispersion modeling.
  
• Pacific Air and Environment - A consultant group, headquartered in Brisbane, Australia with satellite offices in Melbourne and Sydney, who offer air quality modeling and emissions estimation services. The air dispersion models used include models developed in Australia (AUSPLUME, AUSP
  
• Castings Development Centre - A research/development/consultancy facility located in Sheffield, England that uses the ADMS-2 dispersion model to offer air pollution dispersion modeling services to the castings production industry.
  
• Integral Consulting Inc. - A science and engineering consulting firm, headquartered in Annapolis, Maryland, USA with four other office in the USA. Their services include air pollution dispersion modeling.
  
• Fluent, Inc. - Headquartered in Lebanon, New Hampshire, USA with other offices nationwide and worldwide, this firm specializes in computational fluid dynamics (CFD) modeling. Their many services include atmospheric plume dispersion modeling.
  
• BlazeTech Corporation - Consultants (in Cambridge, Massachusetts, 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 Agent
  
• Shell Engineering & Associates - 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 e
  
• Anvil Corporation - Engineering and design company headquartered in Bellingham, Washington, USA with other offices in the states of Washington, Montana and Alaska. Services include air dispersion modeling in support of air permitting, BACT and T-BACT analyses, and complianc
  
• Wenck Associates - Consulting engineers based in Maple Plains, Minnesota, USA with multiple other offices in Minnesota. Their services include the use of air dispersion modeling for air permitting, regulatory compliance studies, air toxics evaluation, and New Source Review
  
• 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 Mode
  
• Zephyr Environmental Corporation - An environmental consulting firm, headquartered in Austin, Texas, USA, whose air dispersion modeling services include: simple and complex terrain modeling; line and mobile source modeling; and modeling of accidental dense gas releases. Zephyr utilizes U.
  
• Air & Noise Compliance - An air quality and acoustic consulting firm (based in Plaistow, New Hampshire, USA) whose services include air dispersion modeling.
  
• UTB Envirotech Kft. - Environmental consulting engineers, based in Budapest, Hungary, whose services include air dispersion modeling.
  
• FaberMaunsell - FaberMaunsell is an international, multi-disciplinary consultancy (located in St. Albans, Herts, UK) whose environmental services include air dispersion modeling.
  
• Sanders Engineering & Analytical Services, Inc. - An environmental engineering firm based in Mobile, Alabama, USA that specializes in air permitting and air quality testing. Their air dispersion modeling includes the use of the U.S. EPA's ISC short and long term models, complex terrain modeling, and the
  
• Odotech Inc. - Expertise in odor-related problems, include air pollution dispersion modeling and innovative technologies for measuring and analyzing components. Profile with contacts in Grasse and Lyon, France, with headquarters in Montreal.
  
• Payne Environmental - A firm of consulting engineers (based in New Haven, Connecticut, USA) whose air permitting and engineering services include air dispersion modeling.
  
• Compliance Partners, Inc. - An environmental consulting firm headquartered in Littleton, Colorado, USA (with other offices in Oklahoma and Wyoming) whose services include permitting, dispersion modeling, and developing and implementing compliance programs for the natural gas industr
  
• AlphaTRAC Inc. - A consulting firm located in Westminster, Colorado, USA that offers atmospheric dispersion modeling including dense gases, hazardous releases and complex terrain.
  
• Source Environmental Science - An environmental consulting firm, located in Houston, Texas, USA, whose air quality services include: air pollution dispersion modeling, air emission inventories, and air permitting.
  
• NPN Environmental Engineers - Consulting environmental engineering firm located in St. Louis, Missouri, USA. Services include air dispersion modeling, air emission inventories, air permitting and compliance programs.
  
• ENSR: Environmental Consultants and Engineers - A worldwide environmental service company (headquartered in Westford, Massachusetts, USA) that has developed: dispersion models that accommodate complex terrain and aerodynamic downwash; visibility models; hazardous air pollutant dispersion models; and ot
  
• Air Science Inc. - Lakewood, Colorado. Offering services in air quality aspects of environmental impact studies, meteorological monitoring, dispersion modeling, visibility degradation analysis, and permitting of industrial facilities. The models utilized include SCREEN3, IS
  
• Kinectrics - A consulting firm based in Toronto, Canada who offers air dispersion modeling in support of their electric power generation services.
  
• Pinchin Environmental Ltd. - 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, and AER
  
• MET Associates - A consultant firm in Dayton, Texas, USA that provides litigation support and expert witness testimony to environmental lawyers and to insurance companies for either plaintiffs or defendants in court cases that involve air dispersion and air quality modeli
  
• BMT Cordah Ltd. - An international environmental consultancy based in the UK (with other offices in Poland, the USA and Asia) whose services include air dispersion modeling using the ADMS, AERMOD, CALINE, and Screen 3 models. [PDF]
  
• QED Engineering Ltd. - An environmental engineering consultancy based in Monaghan, Ireland whose air quality services include air dispersion modelling.
  
• EnviroChem Engineering Consultants - Located in Wolfville, Nova Scotia, Canada, the EnviroChem Engineering Consultants firm offers chemical engineering services as well as environmental engineering services. Their environmental services include ambient air monitoring, stack sampling and air
  
• Vipac Engineers and Scientists - A company headquartered in Melbourne, Australia whose consulting services include air pollution dispersion modeling.
  
• EnviroComp Consulting, Inc. - EnviroComp Consulting (based in Fremont, California, USA) develops and applies computational techniques to study environmental problems and, in particular, air pollution by using data analysis, simulation modeling, statistical methods, and advanced visual
  
• Church and Trought - An environmental engineering firm based in Toronto, Ontario, Canada whose services include air dispersion modeling. The dispersion models used include the Ontario Ministry of Environment Regulation 346 model as well as the USA EPA models ISC3 and AERMOD.
  
• Calvin Consulting Group Ltd. - Canadian air quality and emissions specialty consulting company.
  
• Ambient Air Services, Inc. - Environmental consulting firm specializing in air pollution related services including planning, engineering, permitting and monitoring, located at Starke, Florida.
  
• Atmospheric Studies Group at TRC - A worldwide environmental consultant firm, headquartered in Long Beach, California, offering air quality modeling services.
  
• T&B Systems: Environmental Reseach Associates - Company providing applied research in the atmospheric sciences throughout the United States and abroad. Capabilities include meteorological and air quality monitoring, analysis, auditing, and environmental impact reporting.
  
• 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 is located in Darlington, England and uses the UK Atmospheric Disper
  
• North American Weather Consultants - Meteorological consultants (located in Salt Lake City, Utah, USA) 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.
  
• Weiss Associates - An environmental engineering, science and management firm headquartered in Emeryville, California, USA whose air quality services include air dispersion modeling.
  
• Environmental Engineering Solutions, P.C. - Environmental Engineering Solutions is an environmental engineering consulting firm, based in Westchester, New York, USA, whose services include air dispersion modeling.
  
• Jacques Whitford - A multi-national engineering firm (headquartered in Dartmouth, Nova Scotia, Canada) who offers air dispersion modeling in support of their environmental, geotechnical and risk management services.
  
• TRC Environmental Corporation - Environmental engineers and consultants, based in Windsor, Connecticut, USA with multiple offices nationwide as well as offices in South America. Provider of short-term field studies for the measurement and evaluation of complex dispersion problems and th
  
• Grove Scientific Engineering - Environmental engineering consultants, located in Orlando, Florida, USA, whose services include: industrial air pollution studies, air permitting, emission inventories and air dispersion modeling.
  
• ECCI - ECCI is a consulting firm with offices in Little Rock, Arkansas, USA. Services include consulting, Clean Air Act permitting/modeling, industrial risk, SPCC, hazardous waste and a full range of engineering services.
  
• Lakes Environmental - Located in Ontario, Canada, this firm 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
  
• CTEH - The Center for Toxicology and Environmental Health is a consulting firm based in Little Rock, Arkansas, USA whose environamental services in include air dispersion modeling using the SAFER dispersion model.
  
• RWDI Consulting Engineers and Scientists - Rowan Williams Davies and Irwin Inc. (RWDI) are a Canadian firm of consulting engineers and scientists. Their services include wind engineering, air quality studies, microclimate, snow engineering, hazard and risk studies and acoustics.
  
• Sogreah Magelis - An environmental consulting firm based in Lyon, France whose air quality services include dispersion modelling.
  
• Hamon Custodis - Engineering firm (headquartered in Somerville, New Jersey, USA) that designs, constructs and maintains industrial chimneys and smokestacks. Their engineering services include air dispersion modeling.
  
• NRG - A nuclear research, engineering and consultancy group with offices in Petten and Arnheim in the Netherlands. Their services include environmental and dose assessments of radionuclides using dispersion modeling in air, water and soil.
  
• Acu Tech - A nation-wide consultant firm (headquartered in San Francisco, California, USA) specializing in process safety and risk management services, training, and software. AcuTech makes use of these dispersion modeling programs: ALOHA, ARCHIE, DEGADIS, HGSYSTEM
  
• Argent Consulting Services - An environmental engineering and consulting firm headquartered in Houston, Texas, USA and offering services in air dispersion modeling, air permitting and compliance, and risk management plans.
  
• Hastings Engineering, Inc. - Chemical and environmental consultants based in St. Louis, Missouri, USA whose services include air dispersion modeling used for: air permitting, accidental release modeling, and risk assessments.
  
• ENVIRON: Environmental Consultants - An international firm (headquartered in Novato, California, USA) offering services in: dispersion modeling of emissions from industrial plants and hazardous waste sites; air toxics impact studies; air pollution compliance assistance; emergency release mo
  
• Janicke Consulting - A consulting firm located in Dunum, Germany who develop and market air dispersion modeling software such as LASAT, LASPORT and IBJdis.
  
• Windtech Consultants - A firm of consulting engineers (based in Arncliffe, NSW, Australia) whose services include air pollution dispersion studies by physical modeling in a wind tunnel.
  
• D&E Technical - An environmental engineering and software development company located in Champaign, Illinois, USA. Services include air dispersion modeling and hazard analysis.
  
• Environmental Risk Limited - An environmental consulting and engineering firm (located in Bloomfield, Connecticut, USA) whose air quality services include air emissions dispersion modeling, accidental release modeling, and cooling tower impact modeling.
  
  

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