No person shall engage in the selling of Christmas trees within the City without first obtaining a permit therefor. No such permit shall be issued ex cept with the approval of the Fire Chief. All persons operating such sales lots shall conform to the orders of the Fire Chief with respect to storage of trees for sale, disposal of unsold trees, branches and other debris incidental to such sales. No tree or other article of a similarly inflammable nature shall be stored on any such sales lot within 15 feet of any structure having less than a one-hour fire resistance rating.
('88 Code, Title IX, Ch. 113, § 9.184) Penalty, see § 96.99