Nothing in 7-12-4351 through 7-12-4354 prevents the city or town council from eliminating unnecessary lights, relocating individual lights, upgrading lights and lighting-related facilities in the interest of energy conservation, or making other minor modifications in a special improvement lighting district without following the procedures described in 7-12-4351 through 7-12-4353. For the purposes of this section, "minor modifications" includes but is not limited to adding properties or lights if the additions:
(1) reduce assessments within the maintenance district; or
(2) increase the average assessments within the maintenance district by 3% or less in a fiscal year.