A friend had this recently with her '98 CRV, but it was the tow company pursuing her for fees (Denver area). She called the tow company and to my surprise they said no problem, happens all the time, don't worry about it. I guess they figure they can file for title and recoup some costs, although a dead '98 CRV won't bring enough to cover the average tow fee.
I wouldn't be surprised if their contract with the state/county/city states they can bill $XXX if the owner can't be located or costs are greater than vehicle value.