The following information shall be supplied in addition to the requirements in Section 1109.16:
(a) If a zoning change is involved, a letter from the Zoning Inspector shall be required stating that the change has been approved and is in effect.
(b) A letter from the Village Engineer shall be required stating that all required improvements have been either installed and approved by the proper officials or agencies, or that a bond or other surety has been furnished assuring installation of the required improvements.