If any distributor, storer, or retail dealer of gasoline or motor fuel shall fail to make the reports as required by this part or shall fail to comply with any regulation adopted for the collection of the tax by the county commission, within the time required for making such reports, or shall fail to pay the tax imposed within the time fixed for the payment thereof, the distributor, storer, or retail dealer upon conviction thereof shall pay a civil fine of not more than five hundred dollars ($500) for each offense.