We made a similar assumption. We did not include that part in our audit. What we found is that Fisheries and Oceans Canada doesn't know whether the current regulations regarding drugs and pesticides are adequate. They don't know, for example, whether they need more rules regarding cumulative effects. They don't actually know whether the regulations are adequate and therefore haven't set any thresholds.
On October 23rd, 2018. See this statement in context.