California Code, Revenue and Taxation Code - RTC § 60701

(a) Obtain diesel fuel for export and fail to export it, or cause it not to be exported.

(b) Divert diesel fuel, or cause it to be diverted, from interstate or foreign transit begun in this state.

(c) Return diesel fuel to this state and sell or use it, or cause it to be used or sold in this state, without complying with the provisions of this part and without notifying the supplier from whom the diesel fuel was originally purchased of that act.

Any person violating any provision of this section is guilty of a misdemeanor punishable as provided in Section 60706.

Each shipment illegally diverted or illegally returned constitutes a separate offense. The unit of each shipment is the cargo of one vessel, one railroad car load, one automobile truck load, one truck and trailer load, one drum, one case, or one can.