(A)   Regulations not retroactive.  The regulations prescribed by this chapter shall not be construed to require the removal, lowering or other change or alteration of any structure or tree not conforming to the regulations as of the effective date of this chapter, or otherwise interfere with the continuance of a nonconforming use.
   (B)   Markings and lighting.  Notwithstanding the preceding provision of this section, the owner of any existing nonconforming structure or tree is hereby required to permit the installation, operation and maintenance thereon of such markers and lights as shall be deemed necessary by the airport and the Ashe County Board of Commissioners to indicate to the operators of aircraft in the vicinity of the airport the presence of such airport obstruction.
(Ord. passed 6-17-02) Penalty, see § 162.99