(A) General conditions.  The following described substances, materials, waters, or waste shall be limited in discharge to municipal systems to concentrations or quantities which will not harm either the sewers, wastewater treatment process or equipment, will not have an adverse effect on the receiving stream, or will not otherwise endanger lives, limb, public property or constitute a nuisance. The Superintendent may set additional limitations or limitations more stringent than those established in the regulations below if in his opinion such more severe limitations are necessary to meet the above objectives. In forming his opinion as to the acceptability, the Superintendent shall give consideration to such factors as the quantity of subject waste in relation to flows and velocities in the sewers, materials of construction of the sewers, the wastewater treatment process, employed, capacity of the wastewater treatment plant, and other pertinent factors.

(B) Restricted discharges.

(1) Wastewater containing more than 50 milligrams per liter of petroleum oil, nonbiodegradable cutting oils, or products of mineral oil origin.

(2) Wastewater from industrial plants, commercial business or other non?domestic connections containing floatable oils, fat, or grease, whether emulsified or not, in excess of 100 milligrams per liter or containing substances which may solidify or become viscous at temperatures between 32º F. and 150º F. (0º ? 65º C.).

(3) 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.

(4) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interactions with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the POTW, or to exceed the limitations set forth in a federal pretreatment standard. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to Section 307 (a) of the Act.

(5) Any radioactive wastes or isotopes of such half?life or concentration as may exceed limits established by the Superintendent in compliance with applicable state and/or federal regulations.

(6) 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.

(7) Any wastewater with objectionable color not removable in the POTW, but in no case, wastewater with a color at the introduction into the POTW that exceeds 300 ADMI units.

(8) Waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable 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 stream of the POTW.

(9)

(a) Any water or waste which has characteristics based on a 24?hour composite sample, grab, or a shorter period composite sample if more representative, which exceed the following normal maximum domestic wastewater parameter concentrations:

(b) Discharges greater than these concentrations may be subject to penalties contained in the enforcement response plan for the city in addition to surcharge.

(10) The city has received authority through U.S. EPA and state statutes to enforce the requirements of 40 CFR Subchapter N and 40 CFR 403. All users shall comply with the requirements of those regulations as well as with all of this chapter.

(11) 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 time of occurrence.  The Superintendent may deny or condition this discharge at any time.

(12) The following limitations are established for characteristics of any wastewaters to be discharged into the municipal sewer system:

(B) The Sewer and Water Commission may issue a wastewater discharge permit authorizing a discharge in excess of the above limitations in a situation where an engineering study by the Commission determines that proposed discharge will not violate the general discharge prohibitions of this chapter.
(Ord 610.15, passed 2-2-84; Am. Ord. 610.16, passed 5-1-86; Am. Ord. 610.15, passed 6-30-92; Am. Ord. 610.15, passed 5-1-97)  Penalty, see § 51.999

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