At approximately 8:30 a.m. on 2020 January 27, site personnel discovered surface water leaving catchment areas at the Port Granby Legacy Waste Management Facility.
On discovery of the water flow, CNL’s contractor immediately took actions to stop the flow.
Water samples were taken at along the flow path and the site perimeter, and have been sent to an independent laboratory for analysis. The results are expected to show that the effect on the environment was negligible. The removal of historic low-level radioactive waste from the site, which began in 2016, is nearly complete. Most of the land in the path of the overflow had already been remediated.
At no time was there a health or safety risk to workers or the public.
CNL proactively notified the Spills Action Centre, the Ontario Ministry of the Environment, Conservation and Parks, Environment and Climate Change Canada, the Canadian Nuclear Safety Commission and the Municipality of Clarington.