Calgary CO call sends 7 people to hospital [Video]

Seven people were taken to Calgary hospitals on Thursday afternoon for carbon monoxide exposure.

Emergency crews were called to a high-rise building located at 50 Brentwood Common N.W. at around 2:40 p.m. for reports of two people feeling sick.

CFD spokesperson Carol Henke said crews had been using a gas-powered pressure washer inside the building parkade at the time.

She said crews found CO levels at the parkade entrance measuring 50 ppm, but levels climbed to 1,000 ppm once inside.

Calgary EMS says seven adults were assessed at the scene and taken to hospital in non-life threatening condition.

Fire crews checked all of the residential areas of the building and found no CO present, so residents were allowed to stay in their units.  

The parkade was blocked off so that nobody could enter.

Firefighters then used a large fan to ventilate the area.