united states environmental protection agency

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US Environmental Protection Agency (EPA)

Federal government offices in Washington, United States

1200 Pennsylvania Ave, N.W., Washington, DC 20460

(202) 564-4700

epa.gov

Open · Closes 4:30 PM

Days of week	Open hours
Thursday	8 AM - 4:30 PM
Friday	8 AM - 4:30 PM
Saturday	Closed
Sunday	Closed
Monday	8 AM - 4:30 PM Martin Luther King Day, hours may vary
Tuesday	8 AM - 4:30 PM
Wednesday	8 AM - 4:30 PM

See hours on official site

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U.S. Environmental Protection Agency offers research and educational services. It works to protect human health and environment in the United States.

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Frequently asked questions

What types of facilities are regulated by the Clean Air Act?

There are three main categories of stationary sources regulated by the CAA:

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