| 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 spreadsh |
| 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 use |
| Payne_Environmental A firm of consulting engineers (based in New Haven, Connecticut, USA) whose air permitting and engineering services include air dispersion modeling. |
| 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. |
| 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 |
| 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. |
| 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 managemen |
| Preston_Engineering An environmental consulting firm headquartered in Davenport, Iowa, USA, whose services include air pollution dispersion modeling. |
| 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 mod |
| QED_Engineering_Ltd_ An environmental engineering consultancy based in Monaghan, Ireland whose air quality services include air dispersion modelling. |
| 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, |
| 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. |
| 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. |
| RTI_International 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 at |
| 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; a |
| 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, ha |
| 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 |
| 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 a |
| 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. |
| Serene_Environmental_Services An environmental consulting company (based in Vashi, Navi Mumbai, India) whose services include air dispersion modeling. |
| 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 |
| Slovnaft_VURP An applied research institute located in Bratislavia, Slovak Republic whose services include air dispersion modeling using the CFD program called Fluidyn-PANACHE. |
| S_M__Stoller_Corporation An environmental consulting firm headquartered in Lafayette, Colorado, USA with other offices in Idaho, New Mexico and Texas. Their services include risk assessments and air pollution dispersion mode |
| SNC-Lavalin 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 mod |
| Sogreah_Magelis An environmental consulting firm based in Lyon, France whose air quality services include dispersion modelling. |
| 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. |
| Stanley_Environmental,_Inc_ 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 disper |
| Steigers_Corporation An environmental consulting firm (located in Littleton, Colorado, USA) whose services include air dispersion modeling. |
| 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 expos |
| 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. |
| 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 asse |
| 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. |
| 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 a |
| Tonkin_Consulting Tonkin Consulting is an engineering and environmental practice, based in Adelaide, Australia, whose services include air dispersion modelling. |
| TRC_Environmental_Corporation Environmental engineers and consultants, based in Windsor, Connecticut, USA with multiple offices nationwide as well as offices in South America. Air dispersion modeling is used for air permitting an |
| 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, envi |
| UTB_Envirotech_Kft_ Environmental consulting engineers, based in Budapest, Hungary, whose services include 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). |
| Vipac_Engineers_and_Scientists A company headquartered in Melbourne, Australia whose consulting services include air pollution dispersion modeling using models such as AUSPLUME, CALINE 4, MAXCON, RTDM and AIRPLAN. |
| 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, air toxics evaluations, and Ne |
| 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 a |
| The_Weinberg_Group A scientific and regulatory consulting firm, headquartered in Washington,DC, whose services include air dispersion modeling. |
| Weiss_Associates An environmental engineering, science and management firm headquartered in Emeryville, California, USA whose air quality services include air dispersion modeling. |
| 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 complianc |
| 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. |
| Woodard_and_Curran 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 |
| XCG_Consultants_Ltd_ An environmental consulting firm with headquarters and other offices in Ontario, Canada as well as Cincinatti, Ohio, USA. Their services include air dispersion modeling. |
| YSA_Atmospheric_Modeling Yamada Science & Art Corporation (YSA), located in Santa Fe, New Mexico, USA, specializes in computer modeling of atmospheric airflows and the dispersion of airborne materials over complex terrain |
| 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 modelin |
| Artiodactyls_and_other_ruminants Brief information page about the biology of camels, cattle, and their relatives. |
| British_and_European_Ungulates Describes European and British ungulate species |
| Ultimate_Ungulate_Page__Artiodactyla Taxonomy of the order of even-toed ungulates, with biological descriptions of selected representative species. |
| Central_Wales_Ore_Minerals A virtual atlas from an ore-petrologist studying the Central Wales polymetallic vein mineralisation. |
| Cornwall_RIGS_Group Features British Geological Survey geological map of Cornwall, along with publications article extracts and pictorial gallery of geological features and processes. |
| Da_Yoopers_Guide_to_Michigan\'s_Geology Covers the geological history of Michigan including ore deposits and fossils. |
| Desert_Environment,_Minerals_&_Geology_-_DesertUSA About the geology of the North America deserts, including the formations, rocks, gems and minerals found there. |
| Early_Cretaceous_Tethyan_Stratigraphy The broad objective is to build up a detailed knowledge of the Early Cretaceous stratigraphy in the Tethyan realm. The approach will be systematic through the integration of basin reference sections, |
| Geology_Adirondacks_Wyoming_White_Sands pictures and descriptions of geology shown from field trips to various places around the United States |
| Geology_by_Lightplane Louis Maher's air photos of landforms and geologic features of several parts of the U.S., taken from a small aircraft in 1966. |
| The_Geology_of_Virginia The geology of Virginia by province: descriptions, diagrams, maps, photographs, and geologic history of the Appalachian Plateau, Valley and Ridge, Blue Ridge, Piedmont, and Atlantic Coastal Plain ge |
| Geology_of_Zanskar Extensive information about the teconic and metamorphic evolution of the Central Himalayan Domain in Zanskar (Kashmir, India). Also contains information on historical and cultural aspects of the regio |
| Grand_Canyon_3-D_Tour Three-dimensional geologic tour of the Grand Canyon with computer generated aerial pictures every 4 miles for the entire canyon used to illustrate the geologic narrative. |
| Honduras_Geology Clearinghouse of geoscience information for Honduras and Central America. |
| The_Landforms_and_Geology_of_Japan Descriptions and maps of the country's major geologic and tectonic features, with more detailed discussions of the characteristics of specific regions. |
| Late_Triassic_Volcanism_of_the_Ipswich_Basin_(Australia) Description of basin including sections on rhyolites flows and pyroclastics and basaltic-andesites. |
| Mono_Lake_Natural_History Information on Mono Lake, California. Includes volcanic history, formation of tufa, and other information on the lake and its environs. |
