§ 30-58. Chemical discharges.
(a)
No discharge to public sewers may contain:
(1)
Cyanide in concentrations greater than one milligram per liter;
(2)
Fluoride other than that contained in the public water supply;
(3)
Chlorides in concentrations greater than two hundred and fifty (250) milligrams per liter;
(4)
Gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas; or
(5)
Substances causing an excessive chemical oxygen demand (COD).
(b)
No waste or wastewater discharged to public waters may contain:
(1)
Strong acid, iron pickling wastes, or concentrated plating solutions whether neutralized or not;
(2)
Fats, wax, grease, or oils, whether emulsified or not, in excess of one hundred (100) milligrams per liter or containing substances which may solidify or become viscous at temperatures between thirty-two (32) and one hundred fifty (150) degrees Fahrenheit (zero and sixty-five (65) degrees centigrade);
(3)
Objectionable or toxic substances, exerting an excessive chlorine requirement, to such degree that any such material received in the composite wastewater treatment works exceeds the limits established by the approving authority for such materials; or
(4)
Obnoxious, toxic or poisonous solids, liquids or gases in quantities sufficient to violate the provisions of subsection 30-57(a).
(c)
No waste, wastewater, or other substance may be discharged into public sewers which has a pH lower than 5.5 or higher than 9.5 or any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel at the wastewater facilities.
(d)
All waste, wastewater, or other substances containing phenols, hydrogen sulfide, or other taste-and-odor producing substances, shall conform to concentration limits established by the approving authority. After treatment of the composite wastewater, concentration limits may not exceed the requirements established by state, federal, or other agencies with jurisdiction over discharges to receiving waters.
(Ord. No. 443, § 3, 8-23-82)