(a) Runway Larger than Utility Visual Approach Zone—Slopes twenty (20) 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 5,000 feet along the extended runway centerline.
(b) Runway Larger than Utility with a Visibility Minimum Greater than ¾ Mile Nonprecision Instrument Approach Zone—Slopes thirty-four (34) 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 10,000 feet along the extended runway centerline.
(c) Transitional Zones—Slopes seven (7) 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 150 feet above the airport elevation.
(d) Horizontal Zone—No limitation.
(e) Conical Zone—No limitation.
(f) Exception to height limitations: Notwithstanding any provision of this chapter to the contrary, nothing in this chapter shall be construed as prohibiting the construction or maintenance of any structure, or growth of any tree to a height where there is no penetration of the approach surfaces or the transitional surfaces by such structure or growth nor as prohibiting the construction or maintenance of any structure or growth of any tree to a height of twenty-five feet or less above the surface of the land.