(a) No statement contained in this article shall be construed as preventing any agreement or arrangement between the city and any industrial concern whereby an industrial waste limited to conventional pollutants of unusual strength or character may be accepted by the city for treatment, subject to payment therefor by the industrial concern for any portion of the excess cost to the city of handling and treating such industrial wastes. In the event the city agrees to accept and treat industrial waste of unusual strength or character, the charges for such treatment shall be determined as follows:
(1) A basic charge of $228.00 per million gallons times the volume discharged in millions of gallons.
(2) A biochemical oxygen demand surcharge $0.237 per million gallons times the difference between the biochemical oxygen demand expressed in milligrams per liter; all multiplied times the volume discharged expressed in millions of gallons.
(3) A suspended solids surcharge of $0.237 per million gallons times the difference between the suspended solids expressed in milligrams per liter, and 200 milligrams per liter; all multiplied times the volume discharged expressed in millions of gallons.
(b) The basic sewer charge and the biochemical oxygen demand and the suspended solids surcharge shall be reviewed at periodic intervals as determined by the city manager. Changes in the aforementioned rates shall be authorized by ordinance and shall be binding on all agreements for the treatment of industrial waste.
(Prior Code, § 16-157; Ord. of 6-28-1983; Ord. of 9-22-1992)