After the effective date of this chapter:
   A.   Established Use Or Building: Any use established or changed to, and any building, structure or land developed, constructed or used for any permitted principal use, or any use permissible as a special exception, or any accessory use, shall comply with all of the performance standards herein set forth.
   B.   Existing Use Or Building: If any existing use or building or other structure is extended, enlarged, reconstructed or re-established, the performance standards set forth herein shall apply with respect to such extended, enlarged, reconstructed or re-established portion or portions of such use, building, machinery or other structure.
   C.   Annexed Areas: Within one year after annexation, all uses of lands, buildings or other structures within the annexed area should comply with the performance standards. (2006 Code)