The continuation of a nonconforming use or structure and the maintenance or minor repair of a structure containing a nonconforming use are permitted, provided that the continuation, maintenance, or minor repair does not extend or expand the nonconforming use or structure. For the purposes of this section, "maintenance or minor repair" shall mean:
(A) Repairs that are necessary to maintain and to correct any damage or deterioration to the structural soundness or interior appearance of a building or structure without expanding or altering the building or structure;
(B) Maintenance of land areas to protect against health hazards and promote the safety of surrounding land uses; and
(C) Repairs that are required to remedy unsafe conditions that cause a threat to public safety.