Yes.
Also, most of the media we're talking about into which we inject CO2...a lot of it is depleted oil and gas reservoirs or saline aquifers. In the case of oil and gas reservoirs, this is rock. This has contained oil and gas for periods of 50 million to 200 million years. So the idea of it leaking.... I think a lot of people visualize oil and gas being in pools. This oil and gas is ingrained in rock, so the idea of having a catastrophic leak or the idea of it coming out very suddenly or in large quantities is fairly remote. That's not to say there are no risks, but we also have the technology to mitigate any of these emissions, so it's a fairly safe enterprise.
And in terms of the period and the extent of monitoring, that's a matter of discussion. It might require intense monitoring in the short term. There are tools in place to see where the CO2 is going, and once we get to a comfort level that the CO2 is staying where we expect it to stay, then the monitoring intervals can decrease until such time as you can put passive monitoring in place in the long term and have comfort with that.