Thank you, Mr. Chairman. I am all the more pleased that this time I will be able to ask a question that has been on the tip of my tongue for weeks.
My question is for Dr. Kasperski.
Ms. McCuaig-Johnston at one point mentioned that there are naphthenic acids. I took a chemistry course at McGill University, but that was back in 1954. I therefore do not remember what theses acids are.
I would therefore like you to explain to me what they are, from a technical point of view, but in a language that I can understand. Are there heavy metals involved? Are there hazardous materials? What chemical compound are we talking about?
You stated earlier in your presentation that these compounds are not dangerous and that they could be spread over land, for example in gardens. But you must be aware that there are mixes of earth derived from composting and which are dangerous. These compounds could therefore contain harmful substances. What is dangerous in their composition?