(a) State the estimated cost to the developer of the proposed road system.(b) If the developer is to complete any roads providing access to the subdivision, submit copies of any bonds or escrow agreements which have been posted to guarantee completion thereof.(c) Submit copies of any bonds or escrow agreements which have been posted to assure completion of the roads within the subdivision.(d) If the interior roads are to be maintained by a public authority, submit a copy of a letter from that authority which states that the roads have been, or the conditions upon which they will be, accepted for maintenance and when.