conical surfaces and runway protection zones. While DCC 18.80 identifies dimensions for the entire imaginary surface and zone, parts of the surfaces and/or zones do not apply within the Redmond, Bend or Sisters Urban Growth Boundaries. The Redmond Airport is owned and operated by the City of Redmond, and located wholly within the Redmond City Limits. Imaginary surface dimensions vary for each airport covered by DCC 18.80.020. Based on the classification of each individual airport, only those portions (of the AS Zone) that overlay existing County zones are relevant. Public use airports covered by DCC 18.80.020 include Redmond Municipal, Bend Municipal, Sunriver and Sisters Eagle Air. Although it is a public-use airport, due to its size and other factors, the County treats land uses surrounding the Sisters Eagle Air Airport based on the ORS 836.608 requirements for private-use airports. The Oregon Department of Aviation is still studying what land use requirements will ultimately be applied to Sisters. However, contrary to the requirements of ORS 836.608, as will all public-use airports, federal law requires that the FAA Part 77 surfaces must be applied. The private-use airports covered by DCC 18.80.020 include Cline Falls Airpark and Juniper Airpark. HISTORY Adopted by Ord. PL-15 on 11/1/1979 Repealed & Reenacted by Ord. 91-020 §1 on 5/29/1991 Amended by Ord. 2001-001 §2 on 1/22/2001 18.80.022 Definitions A.Air Traffic Control Tower. A terminal facility which, through the use of air/ground communications, visual signaling, and other devices, provides air traffic control services to airborne aircraft operating in the vicinity of an airport and to aircraft operating on the airport movement area. B. Aircraft. Helicopters and airplanes, but not hot air balloons or ultralights. (Balloons are governed by FAR Part 30, and ultralights by FAR Part 103. Ultralights are basically unregulated by the FAA.) C. Airport. The strip of land used for taking off and landing aircraft, together with all abutting land used in connection with the aircraft landing or taking off from the strip of land, including but not limited to land used for existing airport uses. D.Airport Direct Impact Area. The area located within 5,000 feet of an airport runway, excluding lands within the runway protection zone and approach surface. (Redmond, Bend, and Sunriver) E. Airport Elevation. The highest point of an airport's usable runway, measured in feet above mean sea level. F.Airport Imaginary Surfaces (and zones). Imaginary areas in space and on the ground that are established in relation to the airport and its runways. For the Redmond, Bend, Sunriver and Sisters airports, the imaginary surfaces are defined by the primary surface, runway protection zone, approach surface, horizontal surface, conical surface and transitional surface. For the Cline Falls and Juniper airports, the imaginary areas are only defined by the primary surface and approach surface. G.Airport Noise Criterion. The State criterion for airport noise is an Average Day-Night Sound Level (DNL) of 55 decibels (dBA). The Airport Noise Criterion is not designed to be a standard for imposing liability or any other legal obligation except as specifically designated pursuant to OAR 340, Division 35.
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