(A) The fees for a permit for the construction of a septic and drain field shall be as follows:
(1) First $1,000 of the estimated cost of the sanitary facilities: $30;
(2) Each $1,000 of the estimated cost of the sanitary facilities in excess of $1,000: $5; and
(3) Each inspection: $4.
(B) The estimated cost of construction will be determined by the city or by an independent contractor with whom the city has contracted to perform those functions.