Nonconforming activity. Wireless communications uses and structures in existence as of 12/21/98 which are nonconforming as to the use or development standards of this ordinance shall be subject to the provisions of Chapter 20.930 VMC, Nonconforming Situations, except that new antennae may be permitted to collocate on pre-existing wireless communication support structures subject to the development standard contained in Section 20.890.040 VMC. (Ord. M-3643, 2004)