In any hearing of the district court for the county or any court of competent jurisdiction, the fact of operation without a valid permit, together with testimony as to ownership or responsibility from the records of the department shall be prima facie evidence of unlawful emissions and that the equipment for which the permit is not in effect is being operated in violation of the provisions of this chapter and regulations enacted pursuant thereto. (1975 L.M.C., ch. 17, § 1.)