1. (a) In this subtitle the following words have the meanings indicated.

2. (b)

   1. (1) “Hazardous liquid” means :

      1. (i) any petroleum or petroleum product;
      2. (ii) any anhydrous ammonia;
      3. (iii) any carbon dioxide; or

      4. (iv) any substance or material that:

         1. 1. is in a liquid state when transported by a pipeline facility; and
         2. 2. may pose an unreasonable risk to life or property when transported by a pipeline facility, as determined by the United States Secretary of Transportation.
   2. (2) “Hazardous liquid” does not include liquefied natural gas.
3. (c) “Interstate pipeline” means a pipeline, or part of a pipeline, regulated under 49 U.S.C. Chapter 601 that is used in the transportation of hazardous liquids or carbon dioxide in interstate or foreign commerce.

4. (d) “Intrastate pipeline” means a pipeline, or part of a pipeline, regulated under 49 U.S.C. Chapter 601 that:

   1. (1) is used in the transportation of hazardous liquids or carbon dioxide; and
   2. (2) is not an interstate pipeline.
5. (e) “Pipeline facility” means new and existing pipe, rights-of-way, and any equipment, facility, or building used in the transportation of hazardous liquids or carbon dioxide.
6. (f) “Pipeline operator” means a person who owns or operates a pipeline facility.

Added by Acts 2001, c. 559, § 1, eff. Oct. 1, 2001. Amended by Acts 2003, c. 327, § 2, eff. July 1, 2003; Acts 2010, c. 72, § 5, eff. April 13, 2010; Acts 2026, c. 153, § 1, eff. April 14, 2026.