Organizations
Air and Waste Management Association
Institute of Clean Air Companies (ICAC)
STAPPA/ALAPCO (associations of state and local air officials)
US EPA
US Environmental Protection Agency (EPA)
US Clean Air Act (and Amendments)
US Air Regulations (40 CFR)
EPA Global Warming Program
EPA Office of Air and Radiation
EPA Office of Air Quality Planning and Standards
EPA Technology Transfer Network
AP-42 - EPA catalog of emission factors for various types of sources
MACT Standards activity
MACT Standards for Stationary Combustion Turbines
Health Effects Notebook for Hazardous Air Pollutants
Other Government Offices and Agencies
Directory of state air agencies
International
Environment Canada
German Umwelt Bundes Amt
Air Quality Information for the UK
Environmental Agencies of the World
European Union Environmental Commission
Other
Environmental Law Net