You are saying that there aren't necessarily data indicating that there is too much ethylene glycol at present. Are data taken at the source to assess the environmental impact of that substance? Does Environment Canada have collection sources to verify that?
Evidence of meeting #55 for Environment and Sustainable Development in the 41st Parliament, 2nd session. (The original version is on Parliament’s site, as are the minutes.) The winning word was data.
A recording is available from Parliament.