Complaints from First Nations and reports from air monitoring stations have led to 11 environmental charges against Canadian Natural Resources Ltd. (CNRL) over the release of a potentially deadly gas in northern Alberta.
The release of hydrogen sulphide gas occurred during August 2012 from the CNRL Horizon oil sands upgrader facility north of Fort McMurray.
The province alleges that CNRL released the gas, failed to use its equipment properly, failed to report what happened properly, and provided misleading information to the government and the Fort McKay First Nation.
Information was not given about how much gas was released from the facility.
Each charge carries a maximum fine of $500,000.