Persons proposing to or who actually discharge industrial wastes which contain none of the prohibited ingredients or characteristics set forth in Prohibited Discharges, §§ 51.110et seq. of the City Code, other than excessive concentrations of BOD5, suspended solids and grease, hydrogen sulfide, or ammonia shall be required to pretreat their wastes to meet the requirements of normal strength wastewater with the exception that wastes may be accepted for treatment if all the following requirements are met:
(A) The wastes will not cause damage to the sanitary sewer system;
(B) The wastes will not impair the wastewater treatment process; and
(C) The discharger of the waste agrees to pay a surcharge over and above the published sewer rates when the waste strength exceeds that of normal strength wastewater.
