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Related Clues:
- Fed. cleaner-upper
- Org. established by Nixon
- Org. concerned with 10-Across
- DDT-banning entity
- Org. against pollution
- Org. with an Acid Rain Program
- Smog-watching grp.
- Labor Dept. arm
- MPG-rating org.
- Smog-monitoring org.
- It tests the waters: abbr.
- Air-quality agcy.
- Waste watchers' org.
- energystar.gov grp.
- Conservation org.