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District Department of the Environment
  (202) 535-2600       1200 First Street, NE, Washington, DC, 20002 Detail
Provides a wide of services, environmental, air quality, energy, energy assistance and energy benchmarking.

Environmental Working Group
  (202) 667-6982       1436 U Street. NW, , Washington, DC, 20009 Detail
Specializes in providing useful resources (like skin deep and the EWG's shopper's guide to pesticides™) to consumers .