PUBLIC SEWER USER RESTRICTIONS

§ 52.050 DISCHARGE PROHIBITED GENERALLY.

   (A)   No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes (hereinafter prohibited substances), or additional waste, if it appears likely, in the opinion of the city, that such wastes can harm either the sewers sewage treatment process or equipment; have an adverse effect on the receiving stream; or can otherwise endanger life, limb, public property or constitute a nuisance.

   (B)   In forming its opinion as to the acceptability of these wastes, the city will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and maximum limits established by regulatory agencies.

   (C)   The substances prohibited are:

      (1)   Any liquid or vapor having a temperature higher than 150°F (65°C);

      (2)   Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;

      (3)   Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant;

      (4)   Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works;

      (5)   Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow of sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, underground garbage, paunch manure, entrails and paper dishes, cups, milk containers and the like, either whole or ground by garbage grinders;

      (6)   Any waters or wastes containing oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures 32 and 150°F (0 and 65°C);

      (7)   Any garbage that has not been properly shredded; the installation and operation of any garbage grinder equipped with a motor of greater than three-fourths horsepower (0.76 hp metric) shall be subject to the review and approval of the Superintendent;

      (8)   Any wastes or waters having a pH in excess of 9.5;

      (9)   Any mercury or any of its compounds in excess of 0.0005mg/l as Hg at any time except as permitted by the city in compliance with applicable state and federal regulations;

      (10)   Any waters or wastes containing strong acid, iron pickling wastes or concentration plating solution whether neutralized or not;

      (11)   Any waters or wastes containing iron, chromium, copper, zinc or similar objectionable or toxic substance; or wastes exerting an excessive chlorine requirement, to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the city, EPA or other regulatory agency for such materials;

      (12)   Any waters or wastes containing phenols or other taste or odor-producing substances, in such concentrations exceeding limits which may be established by the city, EPA or other regulatory agency as necessary after treatment, to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the city, EPA or other regulatory agency for such materials;

      (13)   Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the city in compliance with applicable state or federal regulations;

      (14)   Any cyanide in excess of 0.05 mg/l at any time, except as permitted by the city in compliance with applicable state and federal regulations;

      (15)   Material that exert or cause:

         (a)   Unusual concentrations of inert suspended solids (such as, but not limited to, Fuller’s earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate);

         (b)   Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions);

         (c)   Unusual BOD, chemical oxygen demand or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works; or

         (d)   Unusual volume of flow or concentrations of wastes constituting “slugs” as defined herein.

      (16)   Waters or wastes containing substances which are not amendable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge to the receiving waters.

(Prior Code, § 18-9-1) Penalty, see § 52.999

§ 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)