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Applied Modeling Inc. (AMI) http://www.amiace.com: 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, CAMEO, SLAB, DEGADIS and SCREEN models).
DNV http://www.dnv.com: 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 modeling software.
Bison Engineering, Inc. http://www.bison-eng.com/air.html: 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).
AirNova Inc. http://www.airnova.com: 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 Research Consultants http://www.cerc.co.uk: 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.
Enviroware s.r.l. http://www.enviroware.com: These consultants, located in Italy, provide a number of air dispersion models. The site includes an online Gaussian dispersion model called Tox-Flam, for releases of inert buoyant pollutants into a mixing layer of a user-specified height.
McVehil-Monnett Associates http://www.mcvehil-monnett.com/: 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 tower plumes, impacts of complex terrain on pollutant dispersion, mobile source impacts, and toxic air pollutant exposures.
Meteorological Solutions Inc. http://www.metsolution.com/: Air quality consultants (located in Salt Lake City, Utah, USA) 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.
Tech Environmental Inc. (TEI) http://techenv.com/: 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 dispersion and noise modeling, planning, and monitoring.
MET Associates http://www.metassociates.net/: 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 modeling.
RTP Environmental Associates http://rtpenv.com/: 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-year analyses over distances of several meters to several hundred kilometers.
Dyadem International, Ltd. http://www.dyadem.com: 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).
Acu Tech http://www.acutech-consulting.com/consulting/release.html: 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, SLAB, TSCREEN, and PHAST.
WebMET http://www.webmet.com: 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 sponsored by Lakes Environmental located in Ontario, Canada.
Grove Scientific Engineering http://www.grovescientific.com/air_pollution.html: Environmental engineering consultants, located in Orlando, Florida, USA, whose services include: industrial air pollution studies, air permitting, emission inventories and air dispersion modeling.
Hastings Engineering, Inc. http://www.hastingsengineering.com/Engineers.htm: 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.
Zephyr Environmental Corporation http://www.zephyrenv.com/nonframes/serv.air.html: 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.S. EPA models such ISCST3 and SCREEN3; and public domain models such as SLAB and RMP-COMP.
Aegis Environmental Inc. http://www.aegis-environmental.com/services.html: Located in Richmond, Virginia, USA, the Aegis Environmental firm offers environmental consulting services including air dispersion modeling, offsite consequence analyses, air permitting and regulatory compliance strategies.
EnviroChem Engineering Consultants http://home.istar.ca/~ece/model.html: 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 dispersion modeling using models such as ISC3, AFTOX, SLAB, CALINE3 and SCREEN3.
Lehder Environmental Services http://www.lehder.com/airquality/air_dispersion.html: 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).
Wenck Associates http://www.wenck.com/air_svcs.htm: 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 Reviews.
Mike Lyons and Associates http://www.mikelyons.com.au: 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).
Pollution Control Consultancy and Design http://www.pccd.com.au/airpol.htm: An acoustical and environmental engineering consulting firm based in Sydney, Australia that provides a range of services which includes air dispersion modeling.
Pacific Air and Environment http://www.pae.net.au: 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, AUSPUFF and TAPM) as well as models developed in the USA (ISC3, AERMOD, CALPUFF and CALINE4).
The Weinberg Group http://www.weinberggroup.com: A scientific and regulatory consulting firm, headquartered in Washington,DC, whose services include air dispersion modeling.
Vector AS http://windsim.com/: 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).
Cambridge Environmental Inc. http://www.cambridgeenvironmental.com/services/transport.htm: 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.
Theakston Environmental Control, Inc. http://www.theakston.com/exhaust.htm: Environmental consultants located in Ontario, Canada whose services include physical modeling as well as computer modeling of stack exhaust gas dispersion and dust dispersion.
BlazeTech Corporation http://www.blazetech.com: 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 Agents) ... a model with complex thermodynamics and chemical reactions.
Air Science Inc. http://www.airsci.com/: 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, ISCST3, CALPUFF, VISCREEN, PLUVUE, and IWAQM.
Enviroplan Consulting http://www.enviroplan.com: 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 management plans.
EnCoCo http://www.encoco.com: A firm headquartered in Lahaina, Hawaii, USA and offering air dispersion modeling software focused primarily upon the regulatory requirements of Germany.
Entech Engineering http://www.entechengineering.com/aeolus3.htm: 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.
Stone Lions Environmental Corporation http://www.stonelions.com/homepage.htm: 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.
EnviroComp Consulting, Inc. http://envirocomp.com/whoweare.htm: 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 visualization.
NPN Environmental Engineers http://www.npnenv.com/air_quality.htm: Consulting environmental engineering firm located in St. Louis, Missouri, USA. Services include air dispersion modeling, air emission inventories, air permitting and compliance programs.
Exponent, Inc. http://www.exponent.com/practices/hydrology/airquality.html: 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.
Castings Development Centre http://www.castingsdev.com/: 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.
Applied Environmental Consultants, Inc. http://www.aecinc.org/html/airimpact.html: 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.
Sullivan Environmental Consulting http://www.sullivan-environmental.com/serv01.htm: 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.
Sage Environmental Services http://www.sageenvironmental.com/services.htm: 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.
P & I Design Ltd. http://www.pidesign.co.uk/disperse.htm: 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.
ATMET http://atmet.com/html/about.shtml: 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.
Liaise Environmental, Inc. http://www.liaise.org/airquality.html: A consulting firm based in Dallas, Texas, USA offering air quality permitting and related environmental services including air dispersion modeling.
Environmental Risk Limited http://www.erl.com/services_consulting.htm: 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.
NRG http://www.nrg-nl.com/product/re/dispersion/index.html: 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.
Compliance Partners, Inc. http://www.compliance-partners.com: 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 industry.
Air Noise Environment Pty. Ltd. http://www.ane.com.au: 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.
Keramida Environmental, Inc. http://www.keramida.com/: 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.
Fluent, Inc. http://www.fluent.com/solutions/environmental/env2.htm: 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.
Woodard and Curran http://www.woodardcurran.com/aoe_Info/SectorID/2/AOEID/1: A multi-office environmental consulting firm headquartered in Portland, Maine, USA whose services include air dispersion modeling, air permitting and compliance, air toxics studies and risk management plans.
D'Appolonia S.p.A. http://www.dappolonia.it/e/1/air_qual.htm: Engineering consultants and designers based in Genoa, Italy whose services include risk assessment studies and industrial air pollution dispersion modeling.
Conestoga_Rovers & Associates http://www.cra.co.uk/pdf/8%20air%20quality.pdf: An engineering, construction and environmental consulting firm based in Nottingham, England with 40 offices in Europe and North America. Their services include air pollution dispersion modeling in support of environmental impact studies as well as response planning for accidental releases.
General Physics Corporation http://www.gpworldwide.com/pdf/envir/envir_air_emission_mgmt.pdf: Based in Columbia, Maryland, USA (with other offices in Canada, South America, Europe and Asia), General Physics is a firm of scientists, technologists and engineers whose air emissions management services include air dispersion modeling in support of air emissions compliance studies, offsite consequence analyses, and evaluation/selection of emission stack heights.
Transoft International http://www.fluidyn.com: 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 assessments.
Rogers and Callcott http://www.rogersandcallcott.com/environmental.htm: An environmental consulting firm (located in Greenville, South Carolina, USA) whose services include air dispersion modeling, air permitting and air toxics evaluations.
EngConsult: http://www.eng-consult.com/ECservice-AirQuality.htm: A consulting firm based in Brampton, Ontario, Canada (with an office in Dhaka, Bangladesh) whose services include air dispersion modeling.
E&A Environmental Consultants http://members.aol.com/eaenviron/models.html: A consulting firm, headquartered in Stoughton, Massachusetts, USA with other offices in the states of North Carolina and Washington, that utilizes air dispersion modeling as part of their services in odor abatement.
Regulatory Compliance Partners http://www.your-rcp.com/specialties/chemhazard.shtml: 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.
Aspen Environmental Group http://www.aspeneg.com: 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.
Air Quality Services http://www.aqsllc.net/modeling.htm: 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.
BlueScape Environmental http://www.wei-air.com/practice/area3.html: 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, SCREEN3, CALINE4, AERMOD, VISCREEN, PLUVUE, CTSCREEN, SHORTZ, and BPIP.
GexCon AS http://www.gexcon.com: 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 explosions can also be modeled. GexCon both sell FLACS and perform consultancy services using FLACS.
Church and Trought http://www.churchandtrought.com/services.asp?ID=11: 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.
Preston Engineering http://www.prestonengineering.com/services/air.htm: An environmental consulting firm headquartered in Davenport, Iowa, USA, whose services include air pollution dispersion modeling.
Earthguard Environmental Group Inc. http://www.earthguard.ca: 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 designed for specific applications.
Windtech Consultants http://windtech.com.au/atmospheric_pollution.html: A firm of consulting engineers (based in Arncliffe, NSW, Australia) whose services include air pollution dispersion studies by physical modeling in a wind tunnel.
Murray & Trettel Inc. http://www.weathercommand.com/DispersionModeling.htm: A firm of certified consulting meteorologists (located in Northfield, Illinois) whose environmental services include air dispersion modeling.
Hamon-Custodis http://www.hamon.com/site/presence/local_home.asp?ID1=8&ID2=22&ID3=2: Engineering firm (headquartered in Somerville, New Jersey, USA)that designs, constructs and maintains industrial chimneys and smokestacks. Their engineering services include air dispersion modeling. The firm is part of the Hamon Group (headquartered in Brussels, Belgium) with offices worldwide.
Primatech, Inc. http://www.primatech.com/consulting/services/dispersion_and_consequence_modeling.htm: 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 proprietary software for process hazard analysis (PHA) and safety management (PSM).
AlphaTRAC Inc. http://www.alphatrac.com/: A consulting firm located in Westminster, Colorado, USA that offers atmospheric dispersion modeling including dense gases, hazardous releases and complex terrain.
Brenk Systemplanung GmbH http://www.brenk.com/system/main.htm: An environmental engineering and consulting firm based in Aachen, Germany whose services include air dispersion modeling.
Air & Noise Compliance http://airandnoise.com/AirPrimer.html: An air quality and acoustic consulting firm (based in Plaistow, New Hampshire, USA) whose services include air dispersion modeling.
Conversion Technology Inc. http://www.conversiontechnology.com/aq.html: 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.
Environmental Engineering Studies, Inc. http://www.envengstudies.com/air_quality.htm: An environmental engineering firm (located in Carlsbad, California, USA) whose consulting services include air dispersion modeling studies.
Environmental Engineering Solutions, P.C. http://www.eespc.com/: Environmental Engineering Solutions is an environmental engineering consulting firm, based in Westchester, New York, USA, whose services include air dispersion modeling.
Steigers Corporation http://www.steigers.com/: An environmental consulting firm (located in Littleton, Colorado, USA) whose services include air dispersion modeling.
Associated Environmental Engineers Pvt. Ltd. http://www.aeepl.com/environmental.htm: An environmental engineering firm based in Gujarat, India, whose consulting services include air pollutant dispersal modeling.
Enstec Services http://www.netcomuk.co.uk/~ss_ens/enstec.html#Dispersion: Environmental consultants, headquartered in Cambridge, England, whose services include numerical air dispersion modeling as well as wind tunnel modeling
EnviroMet http://www.enviromet.net/capabilities.shtml: An air quality consulting firm located in Cherry Hill, New Jersey, USA, whose services include air permitting, air dispersion modeling, emissions estimation, site evaluations, regulatory analysis, and human health and ecological risk assessments.
Consultants on Air Resources Management http://www.levegokornyezet.hu: A firm based in Hungary that provides atmospheric environmental impact assessments for Central Europe based on local meteorological data and relevant models.
O'Connor Associates http://www.oconnor-associates.com/services/air-subpage.htm: An engineering and consulting company headquartered in Calgary, Alberta, Canada (with multiple offices across Canada) whose air quality services include air dispersion modeling.
CTEH http://www.cteh.com/services/chemical/: 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.
Atlantic Environmental Technologies, Inc. http://www.atlanticcompanies.com/ade/air.html: An environmental engineering and sciences company, based in Sandwich, Massachusetts, USA, whose air quality services include dispersion modeling.
EXSIM http://www.exsim-consultants.com/: 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 offshore on oil drilling platforms. The model was developed by Shell Oil Global Solutions in England and by the Telemark Technological R&D Center (Tel-Tek) in Norway.
ABS Consulting Inc. http://www.absconsulting.com/midas/advantage.html: 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 their office in Bethesda, Maryland are for routine and accidental airborne releases. Versions available are: quick-running plume model, urban dispersion model and inside building model.
Air Consulting and Engineering Solutions (ACES) http://www.aces-llc.com/: Environmental engineering consultants located in Houston, Texas, USA whose services include air permitting, air pollution control, Clean Air Act compliance, and air dispersion modeling.
JBR Environmental Consultants http://www.jbr-env.com/services/air_quality.html: 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.
Vision Environmental, Inc. http://www.visionenvironmental.com/main.html: Environmental consultants based in Massachusetts and Michigan in the USA. Their services include the use of air dispersion modeling for risk assessments, air permitting, air toxics evaluations, and New Source Reviews.
Kinectrics http://www.kinectrics.com/en/serviceline/AirQualityModelling.html: A consulting firm based in Toronto, Canada who offers air dispersion modeling in support of their electric power generation services.
Odour Monitoring Ireland http://www.odourireland.com: Odour abatement specialists located in Trim, County Meath, Ireland whose services include air and odour dispersion modelling using ISCST3, AERMOD, ADMS3.1 and Calpuff.
ODOTECH http://www.odotech.qc.ca/polair/pdfpolair.html: A firm of odor-related consultants (located in Montreal, Canada) whose services include air pollution dispersion modeling.
Source Environmental Science http://www.source-environmental.com/source.htm: An environmental consulting firm, located in Houston, Texas, USA, whose air quality services include: air pollution dispersion modeling, air emission inventories, and air permitting.
Arup http://www.arup.com/environment/skill.cfm?pageid=1636: A worldwide engineering firm (with home office in London, England) whose environmental services include air dispersion studies using the AERMOD and UK-ADMS models.
Davis & Floyd http://www.davisfloyd.com/airqualitymgmt.html: 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 risk assessments.
El Dorado Engineering http://www.eldoradoengineering.com/enviro.htm: A consulting and design firm (located in Salt Lake City, Utah, USA) whose services include air dispersion modeling.
Mactec http://www.mactec.com/Services/Environmental/AirResources.aspx: 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.
The Titan Group http://www.titanengineering.com/air.html: 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 site selection; visibility studies.
Secor International Inc. http://www.secor.com: An engineering consulting firm headquartered in Redmond, Washington, USA (with other offices nation-wide) whose services include air quality management and regulatory compliance.
PPM Consultants Inc. http://www.ppmco.com/services.asp: 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.
Anvil Corporation http://www.anvilcorp.com: 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 compliance studies.
Argent Consulting Services http://www.argentinc.com/consulting/consulting_air_02.asp: 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.
E & E, Inc. http://www.ene.com/services/air_quality.asp: Environment and Ecology, Inc. is an environmental consulting and engineering company headquartered in Lancaster, NY with other offices nation-wide in the USA. Their services include air permitting, compliance studies, impact assessments and air dispersion modeling.
Air Resource Specialists Inc. http://www.air-resource.com: Located in Ft. Collins, Colorado, USA, this firm provides comprehensive air modeling, permitting, and compliance support to industrial, commercial, and government clients.
Slovnaft VURP http://www.vurup.sk/english/products/proc3/english.html: An applied research institute located in Bratislavia, Slovak Republic whose services include air dispersion modeling using the CFD program called Fluidyn-PANACHE.
RWDI Consulting Engineers and Scientists http://www.rwdi.com/: 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.
Trinity Consultants http://www.trinityconsultants.com/Services.asp?C=3&S=15&T=14: 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 risk.
Consulting Air Pollution Modelers http://www.camm.net.au: 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 AUSPLUME, AUSTOX, TAPAS, TAPM, AUSPUFF/CALPUFF, ISC3.
Dispersoft Consultants Inc. http://pages.infinit.net/aboilard/: A consulting firm headquartered in Sillery, Quebec, Canada, that offers service in air pollution dispersion modeling as well as other unrelated fields.
MSES Consultants http://www.msesconsultants.com/: 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.
North American Weather Consultants http://www.nawcinc.com/aq.html: 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.
Northern Environmental and Monitoring Services (N.E.M.S.) http://www.sheservices.co.uk/: 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 Dispersion Modeling System (ADMS). Their modeling has included: power plant emissions; cooling tower plume visibility; explosion risk assessments; and odor abatement.
Aromatrix Pte Ltd http://www.aromatrix.com/products_consultancy_adm.htm: An odour control/abatement/design consultancy located in Singapore whose services include air dispersion modeling.
FaberMaunsell http://www.fabermaunsell.com/MarketsAndServices/39/02/index.jsp: FaberMaunsell is an international, multi-disciplinary consultancy (located in St. Albans, Herts, UK) whose environmental services include air dispersion modeling.
Katestone Scientific Pty. Ltd. http://www.katestone.com.au/assess.html: Consulting firm based in Brisbane, Australia that offers air dispersion modeling services, using these models: AUSPLUME, AUSMET/AUSPUFF, LADM, TAPM, CALMET/CALPUFF, and the U.S. EPA's ISC models.
Jacques Whitford http://www.jacqueswhitford.com/en/home/servicegroups/airqualitynoise/dispersiondeposition.aspx: 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.
Stanley Environmental, Inc. http://www.stanleyconsultants.com/services.php?from=Environmental: An environmental consulting firm based in Coraville, Iowa, USA and a subsidiary of the Stanley Group. Their services include air permitting, risk management plans, emission inventories and air dispersion modeling.
ENVIRON: Environmental Consultants http://www.environcorp.com/practices/article.php?id=36: 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 modeling and consequence analysis; regional modeling of photochemical reactive plumes and of particulate matter; and visibility models.
Justice Associates http://www.justiceassociates.com/air.htm: 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.
Lakes Environmental http://www.lakes-environmental.com/: 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 U.S. EPA models adapted for use with Windows. Training and technical support are also provided.
Heggies Pty Ltd http://www.heggies.com.au/website/content/airquality/out-dispersionmodelling.html: 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.
ExCAL Ltd http://www.excaluk.com/services/computer.html: A firm of environmental consulting engineers and scientists (based in South Wales, UK) whose services include atmospheric dispersion modelling.
Dessau-Soprin http://www.dessausoprin.com/eng/envDev/services.cfm: A firm of engineering and construction consultants, headquartered in Montreal, Canada, whose air quality services include air dispersion modeling.
EMCo Air Quality Consultants Ltd http://www.emcoairquality.co.uk/page3.html: A firm of air quality consultants, based in Reading, England, whose services include atmospheric dispersion modelling.
Payne Environmental http://www.paynecorp.com/svc_air.php4: A firm of consulting engineers (based in New Haven, Connecticut, USA) whose air permitting and engineering services include air dispersion modeling.
Weiss Associates http://www.weiss.com/NewFiles/reg_comp_mge.html: An environmental engineering, science and management firm headquartered in Emeryville, California, USA whose air quality services include air dispersion modeling.
The Airshed http://theairshed.com: A consulting firm based in East Linton, Lothian, Scotland that specializes in air quality, odour and noise projects.
Tonkin Consulting http://www.tonkin.com.au/what_envi.asp: Tonkin Consulting is an engineering and environmental practice, based in Adelaide, Australia, whose services include air dispersion modelling.
BMT Cordah Ltd. http://www.bmtcordah.com/_downloads/Air%20Dispersion%20Modelling.pdf: 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.
UTB Envirotech Kft. http://www.utb-enviro.com/: Environmental consulting engineers, based in Budapest, Hungary, whose services include air dispersion modeling.
ADM Ltd http://www.aboutair.com/: A consultancy based in Farnham, Surrey, England whose air quality, noise and odour services include air pollution dispersion modelling.
REC Ltd. http://www.recltd.co.uk: 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.
SNC-Lavalin http://www.snclavalin.com/en/2_0/2_8_7.aspx: An engineering and construction firm with offices in Canada, the USA and worldwide. Their environmental division is headquartered in Montreal, Quebec, Canada and their services include air quality modeling.
Integral Consulting Inc. http://www.integral-corp.com/page.php?pname=capabilities/air/1: 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.
RTI International http://www.rti.org/page.cfm?nav=382&objectid=820BD219-D9C8-4DEC-BF4F5CA089A6961C: A research, development and consulting company headquartered in Research Triangle Park, North Carolina, USA with multiple offices nationwide as well as worldwide. Their air quality services include atmospheric dispersion modeling.
Hyder Consulting Plc http://www.hyderconsulting.com/specialism.aspx?typeid=2&id=56: An engineering and consulting firm headquartered in London, England, with multiple office in the UK, Europe, Asia, Australia and the Middle East, whose air quality services include air dispersion modelling.
KCL Environmental Research Group http://www.erg.kcl.ac.uk/erg/docs/Dispersion.pdf: 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.
Sogreah Magelis http://www.sogreah.fr/magelis/our_services/index.php: An environmental consulting firm based in Lyon, France whose air quality services include dispersion modelling.
QED Engineering Ltd. http://www.qedeng.ie/main3.html: An environmental engineering consultancy based in Monaghan, Ireland whose air quality services include air dispersion modelling.
Indian Institute of Technology http://www.iitd.ac.in/center/cas/Projects.html: 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.
Jim Clary & Associates http://www.jimclaryandassociates.com: Consultants, based in Dallas, Texas, USA, whose air quality consulting includes dispersion modeling services.
O'Brien and Gere http://www.obg.com/Sectors/Industrial/environmental.aspx: 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 modeling.
PCR Services http://www.pcrnet.com/air.htm: An environmental consulting firm based in Southern California, USA, whose services include air dispersion modeling, stationary source permitting, and emission inventories, allotments, and mitigations.
Shell Engineering & Associates http://www.shellengr.com/dispersion.htm: 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.
ECCI http://www.ecci.com: 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.
Pinchin Environmental Ltd. http://www.pinchin.com/air.htm: 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 AERMOD.
ENSR: Environmental Consultants and Engineers http://www.ensr.aecom.com/: 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 others for facilities located in dispersion environments where standard models are inaccurate.
Ambient Air Services, Inc. http://members.atlantic.net/~aasi/modeling.htm: Starke, Florida. Services include: air dispersion modeling; stack design and building downwash evaluations; toxic air pollution studies, model validation studies; and air quality impact analyses.
Yamada Science & Art Corporation (YSA) http://ysasoft.com/: 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.
D&E Technical http://www.detech.net/: An environmental engineering and software development company located in Champaign, Illinois, USA. Services include air dispersion modeling and hazard analysis.

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