@animalyodelers I live in Oly, too!
...okay, well, Tumwater.
Usually you just have to work the phone a bit to find an arborist who'll deliver chips free, or keep an eye out for anyone doing work in your neighborhood. They might be happy not to have to make a run all the way back to wherever they were going to dump 'em.
I can't help with other things because I don't actually have chickens yet, but if you want names of a few arborists who might be helpful, you could PM me.
I know they need to be aged, so not so useful for you right now. I use the woodchips for sheet mulching my yard, and since I'm extraordinarily slow I always have aged ones in a big ol' pile, but it's not a DRY pile -- now that I'm reading the aspergillus thread I wonder if I should work on that.
I have the same issue with leaves that you do. There are TONS of leaves, but it's not like any of 'em are DRY.