"I am a scientist. I'm not in a position to answer that question but I'd be happy to refer you to an appropriate spokesperson."

Oh boy. Now the oil sands.  It isn't surprising that this is a source of contamination, so I'm not sure why this needs to be hushed up. Not letting scientists talk about the results of their work is suspicious - I can see if they talk about policy, but not letting them talk about science????

PAH contamination from the Oil Sands

Snow contamination from the Oil Sands