In the discussion on bioremediation on the "composting contaminated grass clippings" thread, John says this:
"Now, how do you do this on your lawn? Here is a reasonable plan of attack: (1) get a truckload of mulch that contains lots of tannins. Oak leaves would be perfect, what you want to avoid is actual structural wood like pine logs or lumber or wood shavings or newspaper, those things are all cellulose."
My question: how important is it that the leaves in this step have a high tannin level? I'd love to try this, but I don't have access to oak leaves. The rest of your instructions I get, but the tannin part gives me pause.
I'd post this on the "composting contaminated lawn clippings" thread, but it seems to have gone from a discussion of bioremediation back to "it can't be done, we're doomed" and/or "this is how to test your compost to tell if it has picloram and the like."