Actually, you probably should ask the fellow sitting immediately to your left. He'll have the answer as well as I have.
Fundamentally, we would never intend to remove.... For example, in western Canada you have clay soil zones in the southern part, brown soil zones as you head north, and then black soil zones that run from Brandon up through Saskatoon and off through Edmonton and up toward the northwest.
Those are the areas where one is looking at removing straw, where farmers actually have a problem getting rid of the straw. Plowing it back under is sometimes not the best answer. Indeed, farmers are trying to move more and more toward so-called low-till or no-till agriculture, where they actually don't have to plow it back under and can save fuel that way.
Furthermore, we don't pretend to know more about land husbandry than farmers do. For example, we would go to you as a farmer, or indeed the 600 farmers.... Going back to Madam Bonsant's question, about whether we contract directly with suppliers, it's the same in the cellulosic ethanol industry. We have contracts with 600 farmers to supply us with straw.
What we found out was that in a given straw basin, about 50% of the farmers want to part with about 50% of their material. We're removing about 25% of the material in any straw basin. The rest is there for soil nutrient value.