§ 52.051 DISCHARGE OF UNPOLLUTED WATERS TO SANITARY SEWERS GENERALLY PROHIBITED.

   (A)   No person shall discharge, or cause to be discharged, any storm water, surface water, groundwater, roof runoff, subsurface drainage, non-contact cooling water or unpolluted industrial process waters to any sanitary sewer, except as hereinafter provided.

   (B)   Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designed as storm sewers, or to a natural outlet approved by the city and any appropriate regulatory agency.

   (C)   Industrial cooling water, unpolluted process waters or non-contact cooling waters, may be discharged with approval from the appropriate regulatory agency, to a storm sewer or natural outlet.

   (D)   If user cannot discharge with approval from the approving authority to a sanitary sewer, all costs for meter installation or piping modifications to the sanitary sewer shall be borne by the user. The city will determine the location of the approved discharge point to the sanitary sewer.

(Prior Code, § 18-9-2) Penalty, see § 52.999

§ 52.052 CONTROL OF HIGH STRENGTH, TOXIC WASTES DIRECTED TO PUBLIC SEWERS.

   (A)   Submission of basic data.

      (1)   Within three months after passage of this chapter, establishments discharging industrial wastes into a public sewer shall prepare and file with the city a report that shall include pertinent date relating to the quantity and characteristics of the wastes discharged to the wastewater treatment works.

      (2)   Similarly, each establishment desiring to make a new connection to public sewer for the purpose of discharging industrial wastes shall prepare and file with the city a report that shall include actual or predicted data relating to the quantity and characteristics of the waste to be discharged.

   (B)   Extension of time. When it can be demonstrated that circumstances exist which would create an unreasonable burden on the established to comply with the time schedule imposed by this chapter, a request for extension of time may be presented for consideration of the city.

(Prior Code, § 18-9-3)

§ 52.053 HIGH STRENGTH FLOW OR TOXIC DISCHARGES SUBJECT TO REVIEW AND APPROVAL.

   (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

      (4)   Require payment to cover the added costs of handling and treating the wastes not covered by existing taxes or sewer charges, under the provisions of §§ 50.60 through 50.69.

   (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)

§ 52.054 INTERCEPTORS.

   (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)

§ 52.055 MONITORING MANHOLES AND LOCATIONS.

   (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)

§ 52.056 TESTS.

   (A)   The owner of any property serviced by a building sewer carrying industrial wastes, or other users who discharge or could potentially discharge greater than normal domestic strength wastewater to the public sewer shall provide, where required by the city, laboratory measurements, tests and analysis of waters and wastes to illustrate compliance with this chapter and any special conditions for discharge established by the city or regulatory agencies having jurisdiction over the discharge.

   (B)   The number, type and frequency of laboratory analysis to be performed by the owner shall be as stipulated by the city or regulatory agency, and shall be such that the wastewater can be adequately characterized so that fair and equitable user charges may be accessed to the owner and to assure that compliance with the federal, state and local standards are being met. The owner shall report the results of measurements and samples for analysis by an outside laboratory service.

   (C)   All measurements, tests and analysis of the characteristics of waters and wastes to which reference is made in this chapter shall be determined in accordance with the latest edition of IEPA Division of Laboratories Manual of Laboratory Methods, and shall be determined at the monitoring manhole or sampling location as specified in this chapter or other approved location. In the event that no special manhole has been required, the meter manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards of life, limb and property. The particular analysis involved will determine whether a 24-hour composite of all outfalls of a premise is appropriate or whether a grab samples or samples should be taken. Normally, but not always, BOD suspended solids and ammonia nitrogen analysis are obtained from 24-hour composites of all outfalls, whereas pHs are determined from periodic grab samples.

(Prior Code, § 18-9-7)