Petroleum means crude oil and products derived from crude oil, other than:
(1) Petroleum products specifically designated as alternate fuels pursuant to these regulations;
(2) Synthetic gas derived from crude oil;
(3) Liquid petroleum gas;
(4) Petroleum coke or waste gases from industrial operations; and
(5) A liquid, solid, or gaseous waste by-product of refinery operations which is commercially unmarketable under the definition of “commercial unmarketability” in these rules.
10 CFR § 500.2
For purposes of this part and parts 501-507 term: