A resident who has been extended a fence waiver of any type in conjunction with the construction or maintenance of a swimming pool whether such waiver has been granted by Council or by the Board of Zoning Appeals, shall in the event the swimming pool is abandoned or removed, be required within thirty days thereof, to restore the height of all fencing in compliance with this chapter. All waivers issued in connection with swimming pool fences, whether by Council or by the Board shall from the date of passage of this section bear the notation. "This waiver is issued only for the life of the swimming pool. In the event the swimming pool is abandoned or removed, all fences shall be restored to height provided in ordinances of this City within thirty days thereof." (Ord. 69-1974. Passed 8-26-74.)