As used in this part, unless the context otherwise requires:
(1) “Commissioner” means the commissioner of agriculture;
(2) “Department” means the department of agriculture;
(3) “Director” means the director of the quality and standards division of the department;
(4) “Gas” or “gasoline” means gasoline or other motor vehicle fuel;
(5) “Person” means an individual, firm, partnership, association, trustee, or corporation; and
(6) “Refueling service” means the service of pumping gasoline into the fuel tank of a motor vehicle.