26 people treated for ammonia exposure after commercial building gas leak in Virginia: Officials ABC News26 people hospitalized after ammonia leak at commercial building in Northern Virginia Yahoo! Voices26 People Sent to Hospitals After Ashburn Ammonia Leak Loudoun NowUPDATED: 26 taken to the hospital after mass casualty incident at Sterling manufacturing plant InsideNoVaDozens in hospital after gas leak at Sterling food plant NBC Washington