As used in this chapter:
"Board" means the Liquefied Petroleum Gas Education and Safety Board;
"Bulk plant" means intermediate establishments or points of storage and distribution, as distinguished from terminals and refineries, from which liquefied petroleum gas is distributed to retail dealers and consumers;
"Commissioner" means the Commissioner of Community Affairs;
"Department" means the Department of Community Affairs; and
"Liquefied petroleum gas" means any material which is composed predominantly of any of the following hydrocarbons, or mixtures of the same: propane, propylene, butanes (normal butane or isobutane), and butylenes.
N.J.S. § 21:1B-1