The maps mentioned in Section 8-502, together with all explanatory material thereon and attached thereto, are hereby adopted, approved and incorporated herein by reference under authority of C.R.S. 24-65.1-101 et seq., as amended, and are made a part of this Article. These maps shall be certified and filed in the Planning Office, in the office of the County Clerk, in the office of the Building Official, and in the office of the Town Engineer.