Los Angeles County-USC Medical Center closes rooftop helipad due to exhaust
Los Angeles Times, February 9, 2009
Los Angeles County-USC Medical Center shut down its rooftop helicopter pad, months after exhaust fumes began leaking into the new hospital's ventilation system. The move came one month after state officials began investigating complaints. County-USC's ventilation system problems were apparent soon after the hospital opened in November, said Pete Delgado, the hospital's chief executive.