Except as otherwise provided in this chapter, no structure shall be erected, altered or maintained in any airport approach zone, transition zone or turning zone to a height in excess of the height limit herein established for each zone. For purposes of determining these height limits as hereinafter specified, the U.S. Coast and Geodetic Survey has established the official elevation reference of the Watsonville Municipal Airport to be 160 feet above mean sea level and all height limits will begin at said elevation. For the purposes of this regulation, the following height limits are hereby established for each of the zones in question:
(a) Inner Turning Zone. 150 feet
(b) Outer Turning Zone. 150 feet at the inner perimeter and increasing in height at the ratio of one foot vertically to 20 feet horizontally to the outer perimeter.
(c) Transition Zone. The height to be determine within the boundaries of the transition zone by reference to Watsonville Municipal Airport zoning map at a ratio of 7:1 commencing at the boundary of the landing area.
(d) Non-Instrument Approach Zones. The height to be determined within the boundaries of the non-instrument approach zones by reference to the Watsonville Municipal Airport Zoning Map and shall not exceed a height greater than permitted by a 20:1 glideslope and in no event to exceed a height greater than 150, starting 200 feet from the end of the runway in an outbound direction.
(e) Instrument Approach Zone. The height to be determined within the boundaries of the instrument approach zone by reference to the Watsonville Municipal Airport Zoning Map and shall not exceed a height greater than permitted by a 50:1 glideslope starting 200 feet from the end of the runway and extending 10,000 feet in an outbound direction and in no event shall the height of any structure or object of natural growth exceed 150 feet. (Ord. 938, 2/3/64; 3433, 8/23/83)