That is true, and I'm actually on the task group that's charged with estimating that based on the best available science. Presently, the guidelines that have been proposed for Lake Erie have been 11,000 metric tonnes per year. When we have a normal year in terms of rainfall the amount of runoff is below that and we don't have algal blooms. When we get a wet fall or winter, we go well above the normal amount of water and the amount of phosphorus entering can go up to 18,000 or 20,000. That's when we get those very severe blooms.
The evidence seems to be that those targets may be too high given the behaviour of the blue-green algae that Mr. Sweetnam was talking about, and some ideas are that perhaps a 30% reduction may be necessary in some of the watersheds. The question is: is that a realistic approach and how would we ever achieve those reductions given the economic consequences of that and the best management practices we have available?