(A) When the waste from any factory, mercantile, manufacturing or industrial enterprise is found to interfere with the successful operation of the city's sewerage system, or of the sewage treatment plant, written notice shall be given ordering the offender to construct a waste treatment plant to give the waste pre-treatment before it is discharged into the city's sewerage system.
(1) The pre-treatment shall be sufficient to reduce the strength or characteristics of the wastes to such a degree that it will not interfere with the successful operation of the city's sewerage system or the sewage treatment plant.
(2) The notice shall be served upon the owner or lessee of the factory, mercantile, manufacturing or industrial enterprise by the Sewage Utility Manager of the city or his or her duly authorized representative.
(3) The notice shall set a date or time limit for compliance with the order.
(4) It shall be prima facie evidence that a waste interferes with the successful operation of the sewage treatment plant if:
(a) The waste contains pH less than 6 or greater than 9; and
(b) The average five-day biochemical oxygen demand or the suspended solids of the waste during any six-hour period exceeds 250 ppm.
(c) The samples for the tests shall be collected at hourly intervals and composited. The analysis shall be made according to the method described in the latest edition of “Standard Methods of Water Analysis”, as published by the American Public Health Association.
(Ord. 1954-70, passed 11-1-54; Am. Ord. 2004-4, passed 3-4-04) Penalty, see § 52.99