(A) Wastewater containing more than 25 milligrams per liter of petroleum oil, nonbiodegradeable cutting oils, or products of mineral oil origin.
(B) Wastewater containing floatable oils, fat, or grease, whether emulsified or not, in excess of one hundred (100) milligrams per liter (100 mg/l) or containing substances which may solidify or become viscous at temperatures 32-150o (0-65oC).
(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.
(D) Any water or wastes containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants which: injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, causes the city to violate the terms of its KPDES permit, prevents the use of acceptable sludge disposal methods, or exceed a limitation set forth in a Categorical Pretreatment Standard.
(E) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the city in compliance with applicable state and federal regulations.
(F) Any water or wastes which, by interaction with other water or wastes in the public sewer system, release obnoxious gases, form suspended solids which interfere with the collection system, or create a condition deleterious to structures and treatment processes.
(G) Any wastewater with objectionable color which cannot be removed to an acceptable level within the operation of the wastewater treatment process unless otherwise specifically noted in the Wastewater Contribution Permit (WCP).
(H) Water or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed to the extent required by the city's NPDES/KPDES permit.
(I) Any waste(s) or wastewater(s) classified as a hazardous waste by the Resource Conservation and Recovery Act (RCRA) without a 60 day prior notification of such discharge to the Superintendent. This notification must include the name of the hazardous waste, the EPA hazardous waste number, type of discharge, volume/mass of discharge and time of occurrence(s). The Superintendent may prohibit or condition the discharge(s) at any time.
(J) (1) Any water or wastes which have characteristics based on a 24 hour composite sample, grab or a shorter period composite sample, if more representative, that exceed the following normal maximum domestic wastewater parameter concentrations:
Parameter | Maximum Allowable Concentration Without Surcharges |
BOD | 300 mg/1 |
TSS | 300 mg/1 |
NH3-N | 25 mg/1 |
Oil & Grease (total) | 100 mg/1 |
(2) Any person discharging wastewater exceeding the maximum allowable concentration as noted above, will be subject to a surcharge fee for each pound loading over and above the set limit. Any other amenable constituents requiring the addition of specific chemicals for proper treatment will also be subject to surcharge as noted on the Wastewater Contribution Permit. Exceedance of the effluent limits specified above shall not be deemed to constitute a violation of a permit condition or this ordinance if the appropriated surcharge fee is paid and the discharge does not cause interference or pass through of the POTW.
(K) The following limitations are established for characteristics of any wastewaters to be discharged into the municipal sewer system subject to any compliance schedule as established in the Wastewater Contribution Permit. All significant industrial users must comply with these limitations where they are more stringent than applicable State and Federal regulations:
Parameter | Maximum Daily Concentration (mg/l) |
Parameter | Maximum Daily Concentration (mg/l) |
Arsenic | 0.13 |
Cadmium | 0.07 |
Chromium, total | 2.78 |
Chromium, Hexavalent | 1.00 |
Copper | 0.55 |
Cyanide, Amenable | 0.20 |
Cyanide, total | 1.20 |
Lead | 0.28 |
Mercury | 0.0005 |
Molybdenum | 1.88 |
Phosphorus, total | 25 |
Nickel | 2.63 |
Selenium | 0.54 |
Silver | 0.65 |
Zinc | 1.91 |
TTO | 2.13 |
(L) The city has received authority through the U.S. EPA and state statutes to enforce the requirements of 40 CFR Chapter I, Subchapter N, Parts 405-471, and 40 CFR 403, and 40 CFR Part 35. All users shall comply with the requirements of those regulations.
(M) The Superintendent and/or his designee is authorized to establish local limits pursuant to 40 CFR 403.5(c). In addition, the Superintendent may develop Best Management Practices (BMPs), by ordinance or in individual wastewater discharge permits, to implement local limits and the requirements of this chapter. Such BMPs shall be considered local limits and pretreatment standards.
(N) Significant industrial users are required to notify the Superintendent immediately of any changes at its facility affecting the potential for a slug discharge.
(Ord. 12-93-1, passed 12-6-93; Am. Ord. 4-11-1, passed 4-11-11; Am. Ord. 10-11-1, passed 10-10-11; Am. Ord. 12-13-2, passed 12-9-13)