In this chapter:
(1) "Commission" means the Railroad Commission of Texas.
(2) "Hazardous liquid" means any liquid which is not defined as a solid or hazardous waste by Section 361.003, Health and Safety Code, and which is:
(A) petroleum or any petroleum or liquid natural gas product; or
(B) any hydrocarbon in a liquid state, other than liquified natural gas, that has been determined by the United States secretary of transportation to be a hazardous liquid.
(3) "Salt dome storage of hazardous liquids" means the storage of a hazardous liquid in any salt formation or bedded salt formation storage facility, but does not include a facility that has been defined by the federal Department of Transportation as part of an interstate pipeline facility and that is subject to federal minimum standards adopted under 49 U.S.C. Section 60101 et seq. and its subsequent amendments or a succeeding law.
(4) "Salt dome storage facility" includes any new or existing salt formation or bedded salt formation storage cavern and any equipment, facility, or building used or intended for use in the storage of a hazardous liquid in the salt formation cavern.