No statement contained in this chapter shall be construed as preventing any special agreement or arrangement between the city and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the city for treatment, subject to payment therefor, by the industrial concern, at such rates as are compatible with the rate ordinance (see § 51.115 herein).
('77 Code, § 20-47(g)) (Ord. 374, passed 4-3-78; Am. Ord. 98-6, passed 2-17-98)