Outdoor lighting fixtures preexisting and legally installed and operative before the effective date hereof are exempt from the requirements of this chapter for the life of the preexisting fixture. This exemption does not apply to the requirements of section 8-3-5 or subsection 8-3-4G of this chapter, which shall be binding on "grandfathered" fixtures beginning one year from the effective date hereof. Whenever a preexisting nonconforming luminaire is replaced or moved, the replacement thenceforth shall meet the requirements of this chapter. (Ord. 331, 3-8-2005)