The keeping or storage of any quantity of liquefied hydrocyanic acid within a distance of 200 feet of any schoolhouse, schoolyard, public park, public playground or church, or within 50 feet of any residence or dwelling within the city is hereby prohibited; provided, however, that sufficient liquefied hydrocyanic acid necessary to fumigate trees or shrubs within such prohibited distances may be kept within such distances during the actual progress of such fumigation.
('86 Code, § 6.12.040) (Ord. 1012, passed  - - )  Penalty, see § 1.12.010