49 CFR § 130.2 - Scope.
(b) The requirements of this part have no effect on -
(c) The requirements of this part do not apply to -
(1) Any mixture or solution in which oil is in a concentration by weight of less than 10 percent.
(2) Transportation of oil by aircraft or vessel.
(3) Any petroleum oil carried in a fuel tank for the purpose of supplying fuel for propulsion of the transport vehicle to which it is attached.
(4) Oil transport exclusively within the confines of a non-transportation-related or terminal facility in a vehicle not intended for use in interstate or intrastate commerce (see 40 CFR part 112, appendix A).