PAG- Pima Association of Goverments

PAG’s Environmental Planning Division – made up of Clean Cities (reducing
the region’s dependence on foreign oil, mostly through clean-fuel
technology), Air Quality Planning and Watershed Planning – advances
awareness of regional solutions to regional environmental challenges.
Sustainability is a key concern given the surrounding desert environment and
the region’s rapid growth.

http://www.pagnet.org/Programs/EnvironmentalPlanning/tabid/76/Default.aspx