Federal Government
U.S. Environmental Protection Agency (EPA)
U.S. EPA Region 6
U.S. EPA National Environmental Performance Track Program
U.S. Geological Survey
U.S. Fish and Wildlife Services
National Oceanic and Atmospheric Association
U.S. Department of Energy, Office of Energy Efficiency and Renewal Energy, Clean Cities

State Government
Texas Commission on Environmental Quality
Clean Texas, A Program of the Texas Commission on Environmental Quality
Texas Department of State Health Services

Local/Regional Government
North Central Texas Council of Governments (NCTCOG)
Dallas Fort Worth Clean Cities, NCTCOG
North Texas Green & Go Clean Taxi Partnership

Industry
Airports Council International North America
American Association of Airport Executives
Scorecard: The Pollution Information Site
Construction Industry Compliance Assistance
MSNBC Environment News