An initial investigation at a sewage treatment plant in Ottawa indicates a commonly-used medical isotope is the source of low levels of radioactivity found in shipments of biosolids from the plant.
The City of Ottawa, however, says it can’t confirm the discovery. Instead, city officials say they expect a report from a consultant in a week’s time.
Two loads of the material, which were being sent to a New York company for composting, were stopped at the border on Jan. 29 because radioactive levels were too high. Two more truckloads of the sludge have also tested positive. The material has since been placed in a secure location.
The Canadian Nuclear Safety Commission says the identified isotope is “normally associated with waste from hospitals or persons who have undergone medical treatment.” Officials are insuring the public there is no risk to the health and safety of Canadians or the environment.
Now, the commission says it will remind Ottawa hospitals of their responsibilities when it comes to disposing waste. However, hospitals CTV Ottawa talked to say they’ve been following the rules when it comes to waste disposal.
Meanwhile, Ottawa city staff is reassuring residents their drinking water is safe.
– from ottawa. 4 Feb 2009