724.4A  Weapons free zones — enhanced penalties.
  1.  As used in this section, “weapons free zone” means the area in or on, or within one thousand feet of, the real property comprising a public or private elementary or secondary school, or in or on the real property comprising a public park. A weapons free zone shall not include that portion of a public park designated as a hunting area under section 461A.42.
  2.  Notwithstanding sections 902.9 and 903.1, a person who commits a public offense involving a firearm or offensive weapon, within a weapons free zone, in violation of this or any other chapter shall be subject to a fine of twice the maximum amount which may otherwise be imposed for the public offense.
94 Acts, ch 1172, §53