Twenty workers were forced out of a warehouse in Castleridge early Monday due to a chemical spill.
The spill happened just before 3:10 a.m., the Calgary fire department told Global News.
A forklift punctured a tote that contained hydrogen peroxide. The tote then hit a metal rack that caused a chemical reaction, creating a gas cloud, firefighters said.
Twenty workers left the Day and Ross Freight warehouse along Westwinds Drive NE., and three of them were assessed by EMS but not taken to hospital.
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The fire department’s hazmat team used a hose line to dilute the hydrogen peroxide to dissipate the gas cloud.
The warehouse was ventilated and crews started monitoring the air to ensure that it is safe.