As used in ORS 480.420 (Liquefied petroleum gas rules and regulations) to 480.460 (Disposition of fees), "LP gas" or "liquefied petroleum gas" means any liquid composed predominantly of any of the following hydrocarbons or mixtures of the same: Propane, propylene, butanes (normal butane or isobutane) and butylenes. [Amended by 1957 c.712 §1; 2009 c.790 §3]
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