172D.4  Compliance with zoning requirements.
  1.  Requirement.  A person who operates a feedlot shall comply with applicable zoning requirements. The applicability of a zoning requirement shall be as provided in subsection 2 of this section. A person complies with this section as a matter of law where no zoning requirement exists.
  2.  Applicability.
  a.  A zoning requirement shall apply to a feedlot with an established date of operation subsequent to the effective date of the zoning requirement.
  b.  A zoning requirement, other than one adopted by a city, shall not apply to a feedlot with an established date of operation prior to the effective date of the zoning requirement for a period of ten years from the effective date of that zoning requirement.
  c.  A zoning requirement which is in effect on November 1, 1976, shall apply to a feedlot with an established date of operation prior to November 1, 1976.
  d.  A zoning requirement adopted by a city shall apply to a feedlot located within an incorporated or unincorporated area which is subject to regulation by that city as of November 1, 1976, regardless of the established date of operation of the feedlot.
  e.  A zoning requirement adopted by a city shall not apply to a feedlot which becomes located within an incorporated or unincorporated area subject to regulation by that city by virtue of an incorporation or annexation which takes effect after November 1, 1976 for a period of ten years from the effective date of the incorporation or annexation.
[C77, 79, 81, §172D.4]