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(A) The admission into the public sewers of any of the following waters or wastes shall be subject to the review and approval of the city:
(1) Having a five-day biochemical oxygen demand greater than 250 parts per million by weight;
(2) Containing any quantity of substances having the characteristics described in this chapter;
(3) Having an average daily flow greater than 2% of the average daily sewage flow of the city; or
(4) In violation of the standards for pretreatment provided in 40 C.F.R. 403, June 26, 1978 and any amendments thereto.
(B) The city may elect to:
(1) Reject the wastes;
(2) Require pretreatment to an acceptable condition for discharge to the public sewer;
(3) Require control over the quantities and rates of discharge; and/or
(C) The toxic pollutants subject to prohibition or regulation under this chapter shall include, but need not be limited to, the list of toxic pollutants or combination of pollutants established by § 307(a) of the Clean Water Act of 1977, and subsequent amendments.
(1) Effluent standards or prohibitions for discharge to the sanitary sewer shall also conform to the requirements of § 307(a) and associated regulations.
(2) Pretreatment standards for those pollutants which are determined not to be susceptible to treatment by the treatment works or which would interfere with the operation of such works shall conform to the requirements and associated regulations of § 307(b) of the Clean Water Act of 1988 and subsequent amendments. The primary source for such regulations shall be 40 C.F.R. 403, General Pretreatment Regulations for Existing and New Sources of Pollution.
(D) Where necessary in the opinion of the approving authority, the owner shall provide, at the owner’s expense, such preliminary treatment as may be necessary to reduce the biochemical oxygen demand to 250 parts per million and the suspended solids to 300 parts per million by weight, or reduce objectionable characteristics or constituents to within the maximum limits for which this chapter provides, or control the quantities and rates of discharge of such waters or wastes. If the city permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the approving authority and the Illinois EPA and subject to the requirements of all applicable codes, ordinances and laws.
(Prior Code, § 18-9-4)
(A) Grease, oil, sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, 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 Superintendent, and shall be located as to be readily and easily accessible for cleaning and inspection.
(B) Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, water-tight, and equipped with easily removable covers which, when bolted in place, shall be gas-tight and water-tight. Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at the owner’s expense, in continuously efficient operation at all times.
(C) Where preliminary treatment or flow-equalizing facilities are provided, they shall be maintained continuously in satisfactory and effective operation by the owner at his or her expense.
(Prior Code, § 18-9-5)
(A) Where required by the city, the owner of a property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole together with such necessary meters and other appurtenances to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with approved plans. The plans detail the location and type of manhole, meter, flume and other appurtenances deemed necessary by the city shall be submitted for review to the city. The manhole shall be installed by the owner at his or her expense, and shall be maintained by him or her so as to be safe and accessible at all times.
(B) The preferred location of the control manhole shall be outside of any building structure so as to be more accessible. If locks are place on the entrance to the manhole structure, the owner shall provide the city with a key.
(1) Where required by the city, other users who discharge or could potentially discharge greater than normal domestic strength wastewater to the public sewer shall provide a monitoring location, sampling equipment or other appurtenances that are deemed necessary by the city to characterize the quantity and strength of the wastewater discharged to the public sewers. The required flow monitoring equipment and other appurtenances specified by the city shall be installed by the owner at his or her expense, and shall be maintained by the owner so as to be safe and accessible at all times.
(2) A maintenance schedule of flow monitoring and sampling equipment must be accepted by the city. All maintenance and equipment repair shall be performed within a reasonable time as determined by the city. Failure to perform maintenance within a reasonable time shall be subject to the same forfeiture and procedural provisions as applied to violations under the sewer use ordinance. Prior to completion of satisfactory repairs, and for any preceding period during which the city determines there existed a malfunction, error or bias in the metering and sampling, the volume and strength of the wastewater for that period of discharge shall be based on historical data and a reasonable engineering estimate of flow and strength, taking into account materials and known production variations and the like. All such factors shall be determined by the city in consultation with the discharger. If prolonged periods of breakdown are anticipated, approved interim measuring and sampling needs shall be provided, and used to determine the volume and strength of wastewater.
(C) Following approval and installation of permanent or temporary metering or sampling equipment, such equipment shall not be removed without the consent of the city.
(Prior Code, § 18-9-6)
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