StrategicHumour.com

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.
www.iitd.ac.in/

Clark Air Systems
Provides solutions to industrial and commercial air quality problems, helping you achieve your indoor air quality goals.
www.clarkair.com/

The NAME dispersion model
The Nuclear Accident Model (NAME) is an essential part of the contingency plans for accidental releases of radioactivity into the atmosphere: to provide early warning for emergency response and to predict concentrations, depositions and dosages of radionuclides. Use of the model is administered by the National Meteorological Centre of the United Kingdom's Meteorological Office at Bracknall, Berkshire, UK.
www.met-office.gov.uk/

Wikipedia: Air dispersion modeling
Offers technical articles about air dispersion modeling.
en.wikipedia.org/

Healthy Indoor Air for America's Homes
Basic information for consumers on indoor air quality in their homes. Sponsored by US EPA and other organizations.
www.montana.edu/

CEC Consultants, Inc. - Indoor Air Quality FAQ
Describes the causes of indoor quality deterioration and how to fix the problem. Commercial site.
www.cec-consultants.com/

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 U.S. EPA models adapted for use with Windows. Training and technical support are also provided.
www.lakes-environmental.com/

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.
www.pidesign.co.uk/

AlphaTRAC Inc.
A consulting firm located in Westminster, Colorado, USA that offers atmospheric dispersion modeling including dense gases, hazardous releases and complex terrain.
www.alphatrac.com/

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 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.
www.exsim-consultants.com/