hazardous liquid
(4) “hazardous liquid” means— (A) petroleum or a petroleum product; (B) nonpetroleum fuel, including biofuel, that is flammable, toxic, or corrosive or would be harmful to the environment if released in significant quantities; and (C) a substance the Secretary of Transportation decides may pose an unreasonable risk to life or property when transported by a hazardous liquid pipeline facility in a liquid state (except for liquefied natural gas);