§ 151.093 AREA REGULATIONS.
   (A)   AO-3: Installation Buffer Area. 
      (1)   Permitted uses.
         (a)   All uses are permitted as defined by the underlying zoning district, except for those listed as a Prohibited use below.
         (b)   Single-family residential density shall be limited to two dwelling units per acre within installation buffer.
      (2)   Prohibited uses.
         (a)   Manufactured housing shall not be permitted within the installation buffer.
         (b)   Multi-family housing shall not be permitted within the installation buffer.
         (c)   Group homes, dormitories, or hotels and overnight lodging sites shall not be permitted within the installation buffer.
      (3)   Maximum height. The maximum height of Any structure within the installation buffer for shall be 35 feet.
   (B)   AO-3: Height Hazard Area; maximum height.
      (1)   The maximum height of any structure or object of natural growth in the AO-3 subarea shall be determined by the limits of the airport imaginary surfaces described in §§ 16.50 through 16.110 of the State Airport Hazard Zoning Regulations, Title 92, Part 16 of the Illinois Administrative Code.
      (2)   The airport imaginary surfaces are based on the imaginary surfaces in 14 C.F.R. Part 77, effective October 1, 2002, and are visually represented on the airport airspace sheet of the airport layout plan for MidAmerica St. Louis Airport dated January 7, 2009 and adopted by the Illinois Department of Transportation, Division of Aeronautics. Sample graphic depictions of the airport imaginary surfaces are contained in Appendix H. The drawings in Appendix H are for illustrative purposes only.
      (3)   No structures are permitted within the clear zone/runway protection zone as defined by § 151.090(A).