Yes, if I could add to that, when we're developing the regional management systems on air, water, or land disturbance, or whatever it is, we have to determine what the cumulative effects will be. In there, we take into account the effects of existing projects, the ones that have just been approved, and we take into account future projects and their footprints as well.
For example, when we did the in-stream flow needs management system for the Athabasca River, which was in draft form and submitted to the Alberta and federal governments, we did a calculation on what the withdrawals would be, by various projects, from the Athabasca River in relation to the flows--the high flows and the low flows. So we actually do impact assessments within our organizations in order to understand what the maximum footprints are, to understand where we are in relation to the thresholds we're setting.