Okay, it's a good group of questions.
The first question is about the unknown sources. I'll start with the last one because if you cannot identify the vessel, then it's an unknown source.
The first one would be how do we identify the vessel? If it's a good behaviour vessel, the captain will inform the coast guard that a spill has been caused by his or her ship. That's the first thing. I would say that in most cases the vessels themselves report the spill. The trigger is the polluter must pay for its own spill. A vessel that is polluting must call the response organization. Depending on where the vessel is in Canada, it must call one of the four response organizations to come and clean up the spill. Then the coast guard goes to the site as well to monitor the response and to ensure that the response is being done as per the standards. That's the vast majority of cases.
How do we identify vessels if the vessel itself does not call? It's a matter of either somebody else reports that so and so did a spill and then left the premises, so to speak, or we have the Transport Canada surveillance program with the aircraft. They use three aircraft with very sophisticated equipment whereby they can detect a drop of oil from 20,000 feet and it's solid evidence in court. There's a Dash 8 based in Moncton, a Dash 8 based on the west coast, and a Dash 7 based in Iqaluit. They fly around the waters, evidence is taken, and then fines are given to the ship.
The others are the unknown sources. We respond to about 1,200 of those. Somebody may call the coast guard saying they have seen a little drop of oil; it could be the size of that glass here, but the fisherman will see that and call the coast guard. The coast guard responds to between 1,200 and 1,400 of those a year, from a small one like this to 10 to 20 gallons. It could be in a port, in a recreational port, whatever; we respond to those.
The money you've seen in the supplementary estimates (B) is twofold. First of all there's the money we get from the oil spill response regime. If there is an oil spill somewhere and we have responded, we go to the ship-source oil pollution administrator and we collect the money that we have spent. We provide evidence of the money we have spent to respond to the oil spill. The administrator determines what money should come back to us because we helped prevent a larger spill, and we get the reimbursement. The mechanism to do that is through the supplementary estimates.