Related Clues:
- Banner of 10-Down
- Green gp.
- Org. monitoring industrial wastes
- Agcy. that polices polluters
- Emissions org.
- Smog watchdog: abbr.
- Banner of DDT
- They want to clear the air, briefly
- Green agcy.
- Ryder Cup gp.
- Smog watchers: abbr.
- Pollution monitor
- Abbr. in auto ads
- Toxic-level monitor, briefly
- Govt. org. in 'The Simpsons Movie'