The provisions of the National Fuel Gas Code and Liquefied Petroleum Gas Code (NFPA 54 and 58) shall apply to the installation of all materials and equipment utilizing liquid propane gas. (Ord. 2344 § 1 (Exh. A), 2021; Ord. 2052 § 2 (Exh. B), 2010; Ord. 1986 § 1, 2007; Ord. 1926 § 4, 2004).