If the application for a blasting permit is approved by the City Engineer, the Engineer shall issue the permit applied for upon the payment of a fee of $50.00 therefor to cover in part the expense of such administrative handling or inspections as may be necessary during the time that the blasting operations are carried out. Such fee shall be paid to the City Treasurer and a receipt therefor presented to the City Engineer. (Code 1981 § 16-100. Code 1995 § 70-147.)