(a) Flammable, Explosive or Hazardous Substances and Foreign Matter. No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer.
(1) Any gasoline, benzine, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(2) Any waters containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by injection with other wastes, to injure or interfere with any waste treatment process, constitutes a hazard to humans or animals, create a public nuisance or create any hazard in the receiving waters of the wastewater treatment plant.
(3) Any waters or wastes having a pH lower or higher than that normally encountered in the system, or having any other corrosive property capable of causing damage or hazard to structures, equipment/operation and personnel of the wastewater works without a permit to do so.
(4) Solid or viscous substance in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the wastewater facilities such as, but not limited to, ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, ungrounded garbage, whole blood, paunch manure, hair and fleshing, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(b) Toxic Substances. The following described substances, materials, waters or wastes shall be limited in discharges 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 Board may set limitations lower than the limitations established in the regulations below if in the opinion such more severe limitations are necessary to meet the above objectives. In 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 plant, degree of treatability of the waste in the wastewater treatment plant and other pertinent factors. The limitations or restrictions on materials or characteristics of waste or wastewater discharged to the sanitary sewer, which shall not be violated without approval of the Board, are as follows:
(1) Wastewater having a temperature higher than 150 degrees Fahrenheit (sixty-five degree Celsius).
(2) Wastewater containing more than twenty-five milligrams per liter of petroleum oil, non-biodegradable cutting oils or products of mineral oil origin.
(3) Wastewater from industrial plants containing floatable oils, fat or grease.
(4) Any garbage that has not been properly shredded (see Section 929.01(o)). Garbage grinders may be connected to sanitary sewers from homes, hotels, 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.
(5) Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances to such degree than any material received in the composite wastewater at the wastewater treatment works exceeds the limits established by the Board for such materials.
(6) Any waters or wastes containing odor-producing substances exceeding limits which may be established by the Board.
(7) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Board in compliance with applicable state or federal regulations.
(8) Quantities of flow, concentration or both, which constitute a slug, as defined herein.
(9) 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 a degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(10) Any water or wastes which, by interaction with other water or wastes in the public sewer system, release monoxious gases, from suspended solids which interfere with the collection system, or create a condition deleterious to structures and treatment processes.
(c) Conditional Service. If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or process the characteristics enumerated in Section 929.04
and which in the judgment of the Board may have a deleterious effect upon the wastewater facilities, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Board may:
(1) Reject the wastes.
(2) Require pretreatment to an acceptable condition for discharge to public sewers.
(3) Require control over the quantities and rate of discharge, and/or
(4) Require payment to cover added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of Section 929.04(c).
When considering the above alternatives, the Board shall give consideration to the economic impact of each alternative on the discharge. If the Board permits the pretreatment or equalization of wastes flows, the design and installations of the plants and equipment shall be subject to the review and approval of the Board.
(d) Grease, Oil and Sand Separators. Grease, oil and sand interceptors shall be provided where in the opinion of the Board, they are necessary for the proper handling of liquid wastes containing floatable grease in excessive amounts as specified in subsection (b)(3) hereof or any flammable wastes, sand or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the Board, and shall be located as to be readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors, the owner shall be responsible for the proper removal and disposal by appropriate means of the captured material and shall maintain records of the dates, and means of disposal which are subject to review by the Board. Any removal and hauling of the collected materials not performed by owner's personnel shall be performed by currently licensed waste disposal firms.
(e) Pretreatment; Metering and Sampling Devices. The Board may require a user of sewer services to provide information needed to determine compliance with this article. These requirements may include:
(1) Wastewater discharge peak rate and volume over a specified time period.
(2) Chemical analyses of wastewaters.
(3) Information on raw materials, process and products affecting wastewater volume and quality.
(4) Quantity and disposition of specific liquid, sludge, oil, solvent or other materials important to sewer use control.
(5) A plot plan of sewers of the user's property showing sewer and pretreatment facility location.
(6) Details of wastewater pretreatment facilities.
(7) Details of systems to prevent and control the losses of materials through spills to the municipal sewer.
(f) Measurements, Test and Analyses. All measurements, test and analyses of the characteristics of waters and wastes to which reference is made in this article shall be determined in accordance with the latest edition of "Standard Methods for the Examination of Water and Wastewater," published by the American Public Health Association. Sampling methods, locations, times, duration and frequencies are to be determined on an individual basis subject to approval of the Board.
(g) Disclaimer. No statement contained in this article shall be constructed as preventing any special agreement or arrangement between the Town and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the Board for treatment.
(Ord. 02-06. Passed 10-3-02.)