Environmental Emergency Management Program


Mackenzie Pulp Mill (Worthington Pulp Mill) – Chlorine Dioxide Release

province map

Time/Date of Incident:

The incident was reported on February 21, 2009.  A leak occurred earlier in the week and repairs were made twice; however, the repair failed late Saturday night resulting in a more significant leak.

Location:

5 kilometres South West of the town of Mackenzie.

Product/Quantity:

An estimated 1000 gallons of Chlorine Dioxide released over the course of a week.

Cause:

An intermittent leak from a valve on a chlorine dioxide tank caused approximately 1000 gallons of Chlorine Dioxide (1% solution) to spill to the ground.  5 residences and 30 employees were evacuated from the area while repairs to the valve took place.  The incident resulted in no injuries to the public or to mill employees.  The tank was repaired late on February 22, 2009.