First of all, as to the questions of design, you're absolutely right. Seepage was anticipated in the design of our Kearl tailing system. That's an industry standard. We have a seepage interception system. That's exactly why it's there and what it is installed to do. That concept is proven, and that's conventional technology that we have employed.
In terms of the question around monitoring, the way we're doing that is through monitoring wells and measuring and detecting the seepage. It was always intended that the seepage interception system would evolve and adapt as the monitoring dictated.
What we've done, and I think it's been mentioned a couple of times now, is that we've installed over 140 new monitoring and interception wells. We now have pumping at all of the four isolated locations where we detected the seepage, so the seepage is now being mitigated, and we've installed over 400 metres of trenching to also help intercept the seepage. These are very industry-standard and proven technologies that we're employing.