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§ 31.333 INSPECTION
   (A)   The applicant for the building sewer permit shall notify the superintendent when the building sewer is ready for connection to the public sewer. The connection shall be made under the supervision of the superintendent or his representative. The connections shall be made gastight and watertight and verified by proper testing.
   (B)   All building sewers shall be smoke tested through the wye branch at the public sewer connection, with public sewer tightly plugged off, after connections at both ends are made and after all pipe is properly bedded and backfilled at least to top of pipe and if backfill is completed, within two weeks after completion of backfill. At time of test, any openings into the building drain inside the building shall be water trapped or plugged. Any leakage of smoke from building sewer or building drain and plumbing shall be located at test and repaired to stand repetitions of smoke test without leakage. When smoke testing is completed, the temporary flow line plug shall be removed and a permanent water tight plug shall be placed in branch of test wye-branch and carefully backfilled by hand and tamped to at least six (6) inches above the top of the branch.
(Ord. No. 17-91, 6-25-91)
§ 31.334 DUTY OF ARCHITECTS, CONTRACTORS
   All architects, contractors, builders, or other persons who shall hereafter erect new buildings for dwelling, manufacturing or commercial purposes, on a lot or parcel of ground abutting on a street, alley or easement in the city in which there has been installed or may be installed and maintained any sewer line shall, before erecting any building, exhibit to the city council, or any other board or body of the city which may be in charge and control of the municipal sewer system, satisfactory evidence that a means has been or will be provided for connecting the sanitary sewerage drain pipes from the building with the sewer line.
(Ord. No. 9.61, § 2, 5-24-61)
Division 5. Pollutant Discharge Limits
§ 31.340 GENERAL CONDITIONS
   The following described substances, materials, waters or wastes shall be limited in discharges to municipal systems to concentration or quantities which: will not harm either the sewers, wastewater treatment process or equipment, will maintain and protect water quality in the receiving stream, and 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 provisions below if in his opinion more severe limitations are necessary to meet the above objectives. In forming his opinion as to the acceptability of a discharge, 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.
(Ord. No. 17-91, 6-25-91)
§ 31.341 RESTRICTED DISCHARGES
   (A)   Wastewater containing more than twenty five (25) milligrams per liter of petroleum oil, non-biodegradable cutting oils, or products of mineral oil origin.
   (B)   Wastewater containing floatable oils, fat, or grease, whether emulsified or not, in excess of one hundred (100) milligrams per liter or containing substances which may solidify or become viscous at temperatures 32-150 degrees (0-65 degrees C).
   (C)   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.
   (D)   Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants which: injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, causes the city to violate the terms of its KPDES permit, prevents the use of acceptable sludge disposal methods, or exceed a limitation set forth in a categorical pretreatment standard.
   (E)   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.
   (F)   Any water or wastes which by interaction with other water or wastes in the public sewer system release obnoxious gases, from suspended solids which interfere with the collection system, or create a condition deleterious to structures and treatment processes.
   (G)   Any wastewater with objectionable color which cannot be removed to an acceptable level within the operation of the wastewater treatment process unless otherwise specifically noted in the industrial user permit (IUP).
   (H)   Waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed to the extent required by the city's NPDES/KPDES permit.
   (I)   Any waste(s) or wastewater(s) classified as a hazardous waste by the Resource Conservation and Recovery Act (RCRA) without a sixty (60) day prior notification of such discharge to the superintendent. This notification must include the name of the hazardous waste, the EPA hazardous waste number, type of discharge, volume/mass of discharge and time of occurrence(s). The superintendent may prohibit or condition the discharge(s) at any time.
   (J)   (1)   Any water or wastes which have characteristics based on a twenty-four (24) hour composite sample, grab or a shorter period composite sample, if more representative, that exceed the following normal maximum domestic wastewater parameter concentrations:
 
Parameter
Maximum Allowable Concentration Without Surcharges
BOD
250 mg/l
TSS
250 mg/l
NH3 -N
25 mg/l
Oil and Grease (total)
100 mg/l
 
      (2)   Any person discharging wastewater exceeding the maximum allowable concentration as noted above, will be subject to a surcharge fee for each pound loading over and above the set limit. Any other amenable constituents requiring the addition of specific chemicals for proper treatment will also be subject to surcharge as noted on the industrial user permit. Exceedance of the effluent limits specified above shall not be deemed to constitute a violation of a permit condition or this chapter if the appropriated surcharge fee is paid and the discharge does not cause interference or pass through of the POTW.
   (K)   The Utility Director and/or his or her designee is authorized to establish local limits pursuant to 40 CFR 403.5(c). In addition, the Utility Director may require the development of best management practices (BMPs), by ordinance or in individual wastewater discharge permits, to implement local limits and the requirements of this chapter. Such BMPs shall be considered local limits and pretreatment standards. The following limitations are established for characteristics of any wastewaters to be discharged into the municipal sewer system subject to any compliance schedule as established in the industrial user permit. All significant industrial users must comply with these limitations where they are more stringent than applicable state and/or federal regulations.
Parameter
Maximum Daily Concentration
(mg/l)
Parameter
Maximum Daily Concentration
(mg/l)
Arsenic
0.53
Cadmium
0.07
Chromium, total
1.71
Chromium, hexavalent
0.36
Copper
0.50
Cyanide, free
0.23
Lead
0.29
Mercury
0.0028
Molybdemum
0.74
Nickel
0.50
Selenium
0.22
Silver
0.39
Zinc
1.48
 
   (L)   The city has received authority through the U.S. EPA and state statutes to enforce the requirements of 40 CFR Chapter 1, Subchapter N, Parts 405-471, 40 CFR 403, and 40 CFR Part 35. All users shall comply with the requirements of those regulations.
   (M)   Users shall promptly notify the city in advance of any introduction of wastewater constituents or any substantial change in the volume or character of the wastewater constituents being introduced into the POTW. The Operations Manager may deny or condition the new introduction or change in discharge based on the information submitted in the notification or additional information as may be requested. Significant industrial users are required to notify the Operations Manager immediately of any changes at its facility affecting the potential for a slug discharge.
(Ord. No. 17-91, 6-25-91; Am. Ord. No. 12-99, 6-15-99; Am. Ord. No. 13-2009, 8-4-09; Am. Ord. No. 01-13, § 3, 2-5-13; Am. Ord. No. 17-18, § 1, 11-20-18)
§ 31.342 DILUTION OF WASTEWATER DISCHARGE
   No user shall ever increase the use of process water or, in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the federal categorical pretreatment standards, or in any pollutant specific limitation developed by the city or state.
(Ord. No. 17-91, 6-25-91)
§ 31.343 GREASE, OIL, AND SAND INTERCEPTORS
   Grease, oil, and sand interceptors shall be provided when, in the opinion of the superintendent, they are necessary for the proper handling of liquid wastes containing floatable grease in excessive amounts, or any flammable wastes, sand, or other harmful ingredients; except that such interceptor shall not be required for private living quarters or dwelling units. All interceptors shall be of type and capacity approved by the superintendent and shall be located as to be readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors the owner(s) 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. The city may require reporting of such information for their review. Any removal and hauling of the collected materials not performed by owner(s) personnel must be performed by currently licensed waste disposal firms. Interceptors shall also comply with applicable regulations of the county health department.
(Ord. No. 17-91, 6-25-91)
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