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Each weekday, a pack of blue-and-white buses idle on I Street SW, belching black smoke and hazardous fumes in front of the Amidon Elementary School playground. Who are the buses waiting for? You guessed it: Nature’s safekeepers at the Environmental Protection Agency (EPA), whose workers shuttle between the regulatory agency’s old offices at the Waterside Mall and its new digs at the Ronald Reagan Building and International Trade Center downtown. “They’re leaving the neighborhood and polluting our kids as they go,” says Southwest resident Ahmad Nurriddin. The buses also violate D.C. Code 40-725, which prohibits “the loitering of…vehicles of all descriptions around or in front of hotels, theaters, or public buildings in the District of Columbia….” EPA spokesperson Cathy Milbourn says that the agency is concerned about the hazardous emissions and is “exploring other possibilities to leaving bus motors idling.” Like, you know, obeying the principles that guide your own agency. —Andrew Katz