ActiveSET.org
   Directory of U.S. air quality monitoring firms.
   http://www.activeset.org

Anguil Environmental Systems
   Air pollution control resource. Includes helpful introduction to pollution control, advanced emission control technologies, technology descriptions and compliance assistance links.
   http://www.anguil.com

DW Environmental Consulting
   Offers support with air quality and transportation modeling, transportation facility permitting, meteorological data processing and climatological research. Includes contact information. Located in Tampa, Florida.
   http://www.theywill.com/sites/dwenviro/