124.401B  Possession of controlled substances on certain real property — additional penalty.
  In addition to any other penalties provided in this chapter or another chapter, a person who unlawfully possesses a substance listed in schedule I, II, or III, or a simulated controlled substance represented to be a controlled substance classified in schedule I, II, or III, in or on, or within one thousand feet of the real property comprising a public or private elementary or secondary school, public park, public swimming pool, public recreation center, or on a marked school bus, may be sentenced to one hundred hours of community service work for a public agency or a nonprofit charitable organization. The court shall provide the offender with a written statement of the terms and monitoring provisions of the community service.
94 Acts, ch 1172, §7
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96 Acts, ch 1164, §6