On January 23, 2018, project staff performing surveillance walk-downs discovered water flowing from a legacy ground and surface water collection reservoir on the site of the Port Granby Waste Management Facility, which is currently being remediated. Immediately upon discovery, the water pumping system was turned off to stop the flow of water to the collection reservoir, and an investigation was initiated. It is estimated that approximately 10 to 15 cubic metres of water flowed from the collection reservoir to the bluffs at the south end of the site.
At no time was there a health or safety risk to workers or the public, and the results of independent analysis of water samples taken at the reservoir are expected to show that the effect on the environment was negligible.
CNL proactively notified the Canadian Nuclear Safety Commission, the Ontario Ministry of the Environment and Climate Change, the Ministry of the Environment and Climate Change Canada and the municipalities of Clarington and Port Hope. The investigation continues, and an update to this public disclosure notice will be provided when more information becomes available.