(A) Wastewater containing more than 25 mg/l of petroleum oil, nonbiodegradeable cutting oils, or products of mineral oil origin.
(B) Wastewater from industrial plants or commercial businesses containing floatable oils, fat, or grease, whether emulsified or not, in excess of 200 mg/l or containing substances which may solidify or become viscous at temperatures 32-150°F (0-65°C).
(C) Any garbage that has not been properly shredded. Garbage grinders may be connected to sanitary sewers from homes, motels, institutions, restaurants, hospitals, catering establishments, or similar places where garbage originates from the preparation of food in kitchens for the purpose of consumption on the premises or when served by caterers. The installation and operation of any garbage grinder equipped with a 3/4 HP (0.76 HP metric) motor or greater shall be subject to review and approval of the Superintendent.
(D) Any waters or wastes containing odor-producing substances exceeding limits which may be established by the city.
(E) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.
(F) Any water or wastes which, by interaction with other water or wastes in the public sewer system, releases obnoxious gases, form suspended solids which interfere with the collection system, or create a condition deleterious to structures and treatment processes.
(G) Any waters or wastes containing cadmium, chromium, copper, cyanide, iron, nickel, zinc, or similar objectionable toxic substances to such degree that they inhibit or damage the wastewater treatment processes, or tend to concentrate in the wastewater sludge to such a level that prevents the use of acceptable sludge disposal methods, or pass through the treatment process unremoved and at such concentration that causes a violation of effluent limitations or water quality standards which are or may be established by state and federal agencies having jurisdiction, or cause toxicity under state or federal biomonitoring standards.
(H) Waters or wastes containing substances which are not amendable to treatment or reduction by the wastewater treatment processes employed, or are amendable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(I) Any water or waste which has characteristics based on a 24-hour composite sample, or a shorter period composite sample if more representative, which exceed the following normal maximum domestic wastewater parameter concentrations:
Parameter | Maximum Allowable Concentration Without Surcharge |
BOD | 225 mg/l |
TSS | 265 mg/l |
NH3-N | 25 mg/l |
(J) (1) The following limitations are established for characteristics of any wastewaters to be discharged into the municipal sewer system:
Parameter | Maximum Daily Concentration (mg/l) |
Parameter | Maximum Daily Concentration (mg/l) |
Arsenic | 0.15 |
Cadmium | 0.003 |
Chloride | 394 |
Chromium, hexavalent | 0.08 |
Chromium, total | 4.60 |
Copper | 0.63 |
Cyanide, Free | 0.02 |
Iron | 20 |
Lead | 0.18 |
Mercury | 0.0002 |
Molybdenum | 0.26 |
Nickel | 0.85 |
Selenium | 0.03 |
Silver | 0.24 |
Sulfate | 5500 |
Zinc | 3.35 |
(2) Any waters or wastes having a pH lower than 6.0 or higher than 9.5 shall not be discharged into the POTW.
(K) Any waste or wastewater classified as a hazardous waste by the Resource Conservation and Recovery Act (RCRA) without, at least, a 60-day prior notification of such discharge to the superintendent of the POTW. This notification must include the name of the waste, EPA hazardous waste number, type of discharge, volume/mass of discharge and the time of occurrence. The Superintendent may deny or condition this discharge at any time.
(Ord. 95-08, passed 3-7-95; Am. Ord. 04-21, passed 7-27-04; Am. Ord. 08-13, passed 5-13-08; Am. Ord. 11-30, passed 12-13-11; Am. Ord. 13- 25, passed 11-12-13; Am. Ord. 19-02, passed 2-12-19) Penalty, see §
53.999