No discharger shall discharge or cause to be discharged, directly or indirectly, any of the following described substances into the wastewater disposal system or otherwise to the facilities of the City:
(a) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, waste streams with a closed cup flash point of less than 140º F. or 60º C. using the test method specified in 40 C.F.R. 261.21.
(b) Solid or viscous substances which will or may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater system.
(c) Any wastewater having a pH less than 5.5 or higher than 10.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the system.
(d) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction to injure or interfere with any wastewater treatment process, or constitute a hazard to humans or animals.
(e) Pollutants which result in the presence of toxic gases, vapors or fumes within the POTW, in a quantity that may cause acute worker health and safety problems, create a public nuisance or are sufficient to prevent entry into the sewers for their maintenance and repair.
(f) Any substance which may cause the POTW's effluent or treatment residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or State standards applicable to the sludge management method being used.
(g) Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits.
(h) Any substance with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.
(i) Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference; but in no case, wastewater with a temperature at the introduction into a POTW which exceeds 40º C. (104º F.).
(j) Any slugload. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass through or interference. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other National, State, or local Pretreatment Standards or Requirements. (At the City’s determination a slug load discharge control plan may be required of any discharger to the POTW.)
(k) Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as exceed limits established by the City in compliance with applicable State or Federal regulations.
(l) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder with a motor of three-fourths horsepower or greater shall be subject to the review and approval of the Utilities Director.
(m) Any petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through.
(n) Any discharge from cooling towers, boilers, closed-loop heat transfer systems and/or any other cooling or heating system treated with molybdenum-containing water treatment chemicals.
(Ord. A-1742. Passed 1-22-90; Ord. A-1810. Passed 5-28-91; Ord. A-2142. Passed 11- -98; Ord. A-2698. Passed 10-24-11; Ord. A-2743. Passed 12-10-12; Ord. A-2773. Passed 11-11-13; Ord. A-2788. Passed 6-23-14.)