Related Clues:

• Anti-smog gp.
• Energy Star org.
• Air quality org.
• Gov. air-monitor
• Pesticide-regulating org.
• UV index monitor
• Regulating org.
• Pollution-rating gp.
• Ecology agcy.
• Environmental grp.
• Govt. air monitor
• Waste watchers gp.
• Ecol.-minded org.
• Waste watchers?
• Air-testing org.