All roads are now open around the YMCA on Argyle Avenue after an ammonia leak this morning resulted in the building’s evacuation, according to the city traffic alert system.
Police closed down roads surrounding the area as firefighters attempted to deal with the situation, according to Const. Jean Paul Vincelette from the Ottawa police.
Argyle was closed between Metcalfe and Bank streets, as were O'Connor between Metcalfe and Catherine streets and Catherine between Metcalfe and O'Connor streets.
Police also closed the westbound entrance to the Queensway at Metcalfe.
CTV Ottawa reports the leak was detected in a mechanical room on the third floor of the building where sub-contractors were working to remove asbestos at about 10:30 a.m.
Seven workers were assessed at the scene, and three were sent to hospital to be treated for their injuries, according to CTV.