Correct what Kimberly said, with the addition that there is currently an ODF Yard Debris Voucher program available to local (Tillamook County) residents. Through this program, you can dispose of yard debris at no cost, since ODF picks up the tab -- as long as funding remains. (The voucher was in last week's newspaper, and is available in multiple locations online.)
They offer yard waste disposal. According to their site, recycling is free, and its $95/ton or $12/CY for yard debris.
Thanks! Your answer is awaiting moderation.