17.44.040   Airport zone height limitations.
   Except as otherwise provided in the ordinance codified in this chapter, no structure shall be erected,  altered,  or maintained,  and no tree shall be allowed to grow in any zone created by the ordinance codified in this chapter to a height in excess of the applicable height limit herein established for such zone.  Such applicable height limitations are hereby established for each of the zones in question as follows:
   A.   Utility Runway Visual Approach Zone (Hogeland Airport).  Slopes twenty feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of five thousand feet along the extended runway centerline.
   B.   Utility Runway Nonprecision Instrument Approach Zone. Slopes twenty feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of five thousand feet along the extended runway centerline.
   C.   Runway Larger Than Utility Visual Approach Zone. Slopes twenty feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of five thousand feet along the extended runway centerline.
   D.   Runway Larger than Utility with a Visibility Minimum Greater than Three Fourths Mile Nonprecision Instrument Approach Zone  (Chinook Airport,  Harlem Airport, Turner Airport).  Slopes thirty four feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of ten thousand feet along the extended runway centerline.
   E.   Transitional Zones.  Slope seven feet outward for each foot upward beginning at the sides of and at the same elevation as the primary surface and the approach surface, and extending to a height of one hundred fifty feet above the airport elevation, which is two thousand,  six hundred feet above, mean sea level.  In addition to the foregoing, there are established height limits sloping seven feet outward for each foot upward beginning at the sides of and at the same elevation as the approach surface,  and extending to where they intersect the conical surface.
   F.   Horizontal Zone. Established at one hundred fifty feet above the airport elevation.
   G.   Conical Zone. Slopes twenty feet outward for each foot upward beginning at the periphery of the horizontal zone and at one hundred fifty feet above the airport elevation and extending to a height of three hundred fifty feet above the airport elevation.
   H.   Excepted Height Limitations. Nothing in the ordinance codified in this chapter shall be construed as prohibiting the construction or maintenance of any structure, or growth of any tree to a height up to fifty feet above the surface of the land except within the approach zone where it would penetrate any of the surfaces identified.
(Ord.  495 § 4,  2003).