And if not an by the hour job your estimate should also include time to/from and at the dump. I know in TO you can wait for a half hour at the end of the work day when everyone wants into the transfer station.
Everything I can not sell, give away or put into our own on site landfill at my current job I send to the Ft McMurray dump, I have not quite figured that one out as we have a 250 foot deep pit that needs filling......
I recall the fee was $57 a ton in Ottawa a few years back but we got rid of our chips to the City lot, farms, private homes and nurseries. The wood we put at the side of the road and it was gone most mornings.