<p>Amy Eickhoff says the charter buses that idle outside her 62-floor building spew fumes so noxious that residents avoid sitting on their balconies.</p><p>“All those fumes do is go right up the side of the building like a chimney,” said Eickhoff, who’s worked for 14 years as the building manager of 340 On The Park, a downtown Chicago luxury residential tower. “If you were sitting on your balcony trying to enjoy the beautiful view of Maggie Daley Park or Grant Park, you’re smelling that odor for as long as they’re idling.”</p><p>The idling buses have been a problem for years, according to Eickhoff, who says she sees at least one to three buses a day idle on the upper and middle levels of Randolph Street.</p><p>But, what’s of greater concern, Eickhoff said, are the four or five charter buses that she sees idling every day outside the nearby Blue Cross Blue Shield Tower. Eickhoff said those vehicles wait to transport the building’s employees to and from a train station.