O Fallon City Zoning Code
AIRPORT OVERLAY
BOUNDARIES AND MAPS
§ 157.335 AIRPORT OVERLAY DISTRICT.
Certain airport environs are identified and established by this chapter for property within and around Scott Air Force Base (“AFB”) and MidAmerica St. Louis Airport (MidAmerica) within the county. These environs have been identified through “Federal Aviation Regulations” 14 C.F.R. pt. 77 and data provided to St. Clair County by the United States Air Force as part of the “2008 Joint Land Use Study” and the “2009 Air Installation Compatible Use Zone (AICUZ) Report”. Areas within the airport environs are subject to regulation beyond the other requirements of this chapter. These additional restrictions, designated as the Airport Overlay (“AO”) District, provide an enhanced level of protection in support of the continued operations of Scott AFB and MidAmerica St. Louis Airport.
(Prior Code, § 158.335) (Ord. 3718, passed 6-20-2011)
§ 157.336 INTERPRETATION OF DISTRICT BOUNDARIES.
(A) Establishment and interpretation of district boundaries. The boundaries of the Airport Overlay (“AO”) District and sub-area districts are hereby enacted and established as set forth on the series of four maps incorporated in § 157.338 (district maps), with precise boundaries being determined by scaling distances and features shown on these maps. Where interpretation is needed as to the exact location of the boundaries of the airport districts, as shown on the Airport Overlay (“AO”) District maps, the Director shall make the necessary determination of the boundary based on the purposes of this chapter and underlying mapping data. Any property owner contesting the location of a district boundary affecting his or her property shall be given a reasonable opportunity to present their case in accordance with the appeal procedures established in this chapter. The adopted district maps may include areas outside the territorial boundaries of the city in order to promote coordination with other participating local governments. The regulations of this Airport Overlay District shall not be deemed to extend to any property outside such territorial boundaries to which the city lacks jurisdiction to impose such regulation.
(B) Split parcels. For purposes of regulation of parcels that appear split by the district boundary lines, only that portion of a parcel that falls within the district shall be subject to the provisions and standards of this chapter.
(C) Boundary changes. The boundaries of the Airport Overlay (“AO”) District may be subject to change reflecting new military mission activity and/or aviation operations at Scott AFB and MidAmerica Airport. Scott AFB and MidAmerica Airport shall communicate the results of updated analyses of noise and air safety zones, including AICUZ reports and FAA studies, to affected local governments. The Director shall notify the Air Force, MidAmerica Airport and other local governments that have adopted airport zoning regulations in the environs of Scott Air Force Base and MidAmerica Airport of changes to the district boundary lines as shown in the maps in § 157.338 to promote the coordinated and consistent application of airport overlay regulations. Other coordinating local governments may adopt more stringent regulations than the minimum requirements in this chapter. Boundary changes to the AO District or sub-area districts shall be adopted pursuant to the procedures applicable to amendments to this chapter.
(Prior Code, § 158.336) (Ord. 3718, passed 6-20-2011)
§ 157.337 SUB-AREAS; OVERLAP.
(A) To carry out the purpose of this district, the Airport Overlay (“AO”) District is composed of four overlapping sub-area districts that establish different levels of restrictions based on airport boundary areas of influence, safety areas based on hazard zones and structure height regulations and noise contours as follows. Properties or portions of properties located within multiple sub-areas shall comply with the standards established for each of those sub-areas in which the property is located.
(B) The areas are as follows.
(2) AO-2 Safety Zones Area. The Safety Zones Area designates the sub-area that primarily includes standards for land use, density and design as designated in §§ 157.365 through 157.367. The boundary of this area is determined by FAA and DoD imaginary surfaces definitions for military and civilian airfields (Clear Zone, Runway Protection Zone, Accident Potential Zone 1 and Accident Potential Zone 2) in effect on the effective date of this chapter in conjunction with any other relevant safety area data obtained by the Director.
(3) AO-3 Height Restriction Area. The Height Restriction Area designates the sub-area that primarily includes standards for controlling height as described in §§ 157.380 through 157.383. The boundary of this area is determined by a combination of measurements including a 1,500-foot buffer around Scott Air Force Base and imaginary surfaces definitions for military and civilian airfields in effect on the effective date of this chapter, in conjunction with any other relevant height restriction data obtained by the Director.
(4) AO-4 Noise Zones Area. The Noise Zones Area designates the sub-area that primarily includes standards for the attenuation of noise and residential land use controls as specified in §§ 157.395 through 157.398. This boundary is determined by applying the noise contours published by the DoD for Scott AFB in conjunction with any other relevant noise data obtained by the Director.
(Prior Code, § 158.337) (Ord. 3718, passed 6-20-2011)
§ 157.338 MAPS.
(A) The following four maps are incorporated as an integral part of this chapter.
(B) These maps are hereby adopted and incorporated as an amendment to the official zoning map whether maintained separately or integrated within a single document:
(1) AO-1 Primary Planning Influence Area;
(2) AO-2 Safety Zones Area;
(3) AO-3 Height Restriction Area; and
(4) AO-4 Noise Zones Area.
(Prior Code, § 158.338) (Ord. 3718, passed 6-20-2011)