Hello,
I would bid it like this, though this is what it would cost me:
Timber removal. Would subcontract it out. Will get a bobcat mini-excavator, with the 'thumb' on the bucket for grbbing hold of the ties, and a tandem to dump them in (20 yd capacity)
Price for the machine and truck would be $750.00 for the day (if it doesn't take that long, maybe less) and then a fee for the disposal of the ties.
Can get rid of a truckload for around $200, so if there is more than one truckload, would cost a little more.
When you say 360', is that the length, and if so, how tall is the wall? Need to get a better idea to be of any more help.
However, if the job just requires the removal of the ties and disposal of them, I would say around $1500-$2000 as a rough guess, but really don't know without more info on the amount of wall, the location of the wall, and location. If the wall is 360' and 4 ft tall, then that is a lot of wall to remove, and the price will be signifigantly higher. A lot higher.........
If any clean up work is then required, then that would be extra, ie. if they want the site graded out, extra top soil/stone brought in, or what not.
For now, I will have to say we need more info on the job to really get a feel for the bidding. This is really a shot in the dark so far.
steveair