There's quite a bit of Wood Waste that's trucked up to disposal/burn plants in Maine from Southern New England C&D facilities, so with rail access at Old Town, am guessing there's a good chance that some of that material could move by rail. A lot depends on what they'll pay for the stuff (or even charge in some cases) vs those other locations.
The Ethanol would likely be for consumption within New England and as of right now, the only place with Ethanol unloading rail infrastructure is the Motiva terminal at the Port of Providence. If it's going to the tank farms at Bangor/Brewer, S Portland or Revere/Chelsea, chances are it will move by truck.