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§ 52.065 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 Pretreatment Coordinator may set additional limitations or limitations more stringent than those established in the provisions below if, in his or her opinion, more severe limitations are necessary to meet the above objectives. In forming his or her opinion as to the acceptability of a discharge, the Pretreatment Coordinator 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. 013-137, passed 6-24-2013)
§ 52.066 PROHIBITED DISCHARGES.
   (A)   No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with performance of the POTW or cause pass through to the receiving stream. These general prohibitions apply to all such users of the POTW whether or not the user is subject to national categorical pretreatment standards or any other national, state or local pretreatment standards or requirements.
   (B)   A user shall not contribute the following substances to the POTW:
      (1)   Any liquids, solids or gases which, by reason of their nature or quantity, are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the POTW or to the operation of the POTW. At no time shall the wastewater exhibit a closed cup flashpoint of less than 140°F or 60°C using the test methods specified in 40 C.F.R. § 261.21;
      (2)   Any waters or wastes having a pH lower than 5.0 or higher than 10.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the POTW;
      (3)   Any slug load of pollutants, including oxygen-demanding pollutants (BOD and the like), released at a flow rate and/or concentration, either individually or by interaction with other pollutants, that will cause interference with the normal operation of the POTW;
      (4)   Solid or viscous substances 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, (i.e., wood, glass, ashes, unshredded garbage, cinders, paper products such as cups, dishes, napkins and milk containers and the like);
      (5)   Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW that will result in a treatment plant influent temperature which exceeds 40°C (104°F);
      (6)   Any pollutant(s) which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity that may cause acute worker health and safety problems;
      (7)   Any substance which may cause the POTW’s effluent or any other product of the POTW such as residues, sludges or scum, to be unsuitable for reclamation and reuse or to interfere with the reclamation process where the POTW is pursuing a reuse and reclamation program. In no case shall a substance discharged to the POTW cause the POTW to be in non-compliance with sludge use or disposal criteria, guidelines or regulations developed under § 405 of the Act; any criteria, guidelines, or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or state criteria applicable to the sludge management method being used;
      (8)   Any substance which will cause the POTW to violate its NPDES/KPDES permit and/or sludge disposal system permit;
      (9)   Any trucked or hauled pollutants except at discharge points designated by the Pretreatment Coordinator; and
      (10)   Any wastewater containing any radioactive wastes or isotopes, except as specifically approved by the Pretreatment Coordinator in compliance with applicable state and federal regulations.
(Ord. 013-137, passed 6-24-2013) Penalty, see § 52.999
§ 52.067 RESTRICTED DISCHARGES.
   (A)   A user shall not contribute the following substances to the POTW:
      (1)   Wastewater containing more than 100 mg/l of petroleum oil, non-biodegradable cutting oils or products of mineral oil origin;
      (2)   Wastewater containing floatable oils, fat or grease, whether emulsified or not, in excess of 200 mg/l or containing substances which may solidify or become viscous at temperatures 32°-150° (0°-65°C);
      (3)   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. Paper and Styrofoam products are prohibited from being discharged into the sanitary sewer system;
      (4)   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;
      (5)   Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, condensate, deionized water, non-contact cooling water and unpolluted industrial wastewater, unless specifically authorized by the Pretreatment Coordinator;
      (6)   Any water or wastes which by interaction with other water or wastes in the public sewer system, release obnoxious gases, form suspended solids which interfere with the collection system or create a condition deleterious to structures and treatment processes;
      (7)   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 an industrial user permit;
      (8)   Any medical wastes, except as specifically authorized by the Pretreatment Coordinator in an industrial user permit, and an recognizable portions of human or animal anatomy;
      (9)   Any wastes containing detergents, surface active agents or other substances which will cause excessive foaming in the municipal wastewater system;
      (10)   Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the city in compliance with applicable state and/or federal regulations;
      (11)   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;
      (12)   Any waste(s) or wastewater(s) classified as a hazardous waste by the Resource Conservation and Recovery Act (RCRA) without a 60-day prior notification of such discharge to the Pretreatment Coordinator. 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 Pretreatment Coordinator may prohibit or place conditions on the discharge(s) at any time;
      (13)   (a)   Any water or wastes which have characteristics based on a 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
NH3-N
30 mg/l
Oil and grease (total)
100 mg/l
TSS
250 mg/l
 
         (b)   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 surcharge 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.
      (14)   The following discharge limitations are established for characteristics of any wastewaters to be discharged into the municipal sewer system subject to any compliance schedule as established by the City Engineer. All significant industrial users must comply with these limitations where they are more stringent than applicable state and/or federal regulations. In accordance with 40 C.F.R. part 403, these limitations are considered pretreatment standards equivalent to the federal limitations established in 40 C.F.R. Subch. N.
Parameter (mg/l)
Maximum Daily Concentration
Parameter (mg/l)
Maximum Daily Concentration
Arsenic
0.41
Cadmium
0.05
Chromium, Hexavalent
0.86
Chromium, Total
1.71
Copper
3.38
Cyanide, Amenable
0.60
Lead
0.56
Mercury
0.005
Molybdenum
0.92
Nickel
1.37
Selenium
0.51
Silver
0.93
Zinc
1.48
 
      (15)   Any water or wastewater identified as causing, alone or in conjunction with other wastewater, the treatment plant’s effluent to fail a whole effluent toxicity (WET) test.
   (B)   The city reserves the right to establish limitations and requirements which are more stringent than those required above or by state or federal regulations if deemed necessary to comply with the objectives presented in §§ 52.001 through 52.003 of this chapter or the general and specific prohibitions in §§ 52.066 and 52.067 of this chapter.
   (C)   The city has received authority through the U.S. EPA and state statutes to enforce the requirements of 40 C.F.R. Ch. I, Subch. N, parts 405 through 471, 40 C.F.R. part 403 and 40 C.F.R. part 35. All users shall comply with the requirements of those regulations where applicable.
   (D)   The Pretreatment Coordinator, and/or his or her designee, is authorized to establish local limits pursuant to 40 C.F.R. § 403.5(c). In addition, the Pretreatment Coordinator 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.
(Ord. 013-137, passed 6-24-2013; Ord. 020-010, passed 8-10-2020) Penalty, see § 52.999
§ 52.068 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. 013-137, passed 6-24-2013) Penalty, see § 52.999
§ 52.069 GREASE, OIL AND SAND INTERCEPTORS.
   Grease, oil and sand interceptors shall be provided when, in the opinion of the WWTP 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 Pretreatment Coordinator 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 the owner’s personnel must be performed by a currently licensed waste disposal firm. Interceptors shall also comply with applicable regulations of the county’s Health Department.
(Ord. 013-137, passed 6-24-2013) Penalty, see § 52.999
§ 52.070 SPECIAL INDUSTRIAL PRETREATMENT REQUIREMENTS.
   (A)   Pursuant to the requirements imposed on publicly owned wastewater treatment works by the Federal Water Pollution Control Act Amendments of 1972 and later amendments, all pretreatment standards promulgated by the U.S. Environmental Protection Agency for new and existing industrial dischargers to public sewer systems are hereby made a part of this chapter. Any industrial waste discharge which violates these EPA pretreatment standards shall be in violation of this chapter.
   (B)   Where pretreatment or flow-equalizing facilities are provided or required for any waters or wastes, the industry shall be solely responsible for the continued maintenance in satisfactory and effective operation of such faculties and at their expense.
   (C)   Any person who transports septic tank, seepage pit or cesspool contents, liquid industrial waste or other batch liquid waste and wishes to discharge such waste to the public sewer system shall first have a valid special waste hauler’s permit. Applications for permits shall be obtained from the Pretreatment Coordinator. All applicants for a special waste hauler’s permit shall complete the application form, pay the appropriate fee, and receive a copy of the city’s regulations governing discharge to sewers of liquid wastes from trucks. All persons receiving such permits shall agree, by acceptance of the permit, to abide by all applicable provisions of this chapter and any other special provisions that may be established by the city as necessary for the proper operation and maintenance of the sewerage system.
   (D)   In addition, any person holding a valid permit and wishing to discharge to the wastewater treatment plant must submit to the WWTP Superintendent a sample of each load prior to discharge. A fee and payment schedule shall be established in the permit to cover cost of the required analysis. The Pretreatment Coordinator may require proof of origin of the hauled waste and analysis of the sample prior to discharge.
   (E)   It shall be illegal to discharge any batch liquid waste into any manhole or other part of the public sewer system or any building sewer or other facility that discharges to the public sewer system, except at designated points of discharge specified by the city for such purpose.
   (F)   Any liquid waste hauler illegally discharging to the public sewer system or discharging wastewater not authorized in the permit shall be subject to immediate revocation of discharge privileges and further subject to the penalties and enforcement actions prescribed in §§ 52.150 through 52.156 and 52.999 of this chapter including fines and imprisonment.
   (G)   Waste haulers who have been granted permission to discharge to the public sewer system shall pay fees for such discharge in accordance with a fee schedule established by the WWTP Superintendent and approved by the city.
   (H)   Nothing in this chapter shall relieve waste haulers of the responsibility for compliance with the county’s Health Department, state or federal regulations.
(Ord. 013-137, passed 6-24-2013) Penalty, see § 52.999
§ 52.071 PROTECTION FROM ACCIDENTAL AND SLUG DISCHARGES.
   (A)   General.
      (1)   Each significant user shall provide protection from accidental and/or slug discharges of prohibited materials or other substances regulated by this chapter which adversely affects the POTW. Facilities to prevent accidental and/or slug discharges of prohibited materials shall be provided and maintained at the owner’s or user’s own cost and expense. All significant industrial users are required to notify the WWTP Superintendent immediately of any changes at its facility affecting the potential for a slug discharge. Once every two years, the Pretreatment Coordinator will determine whether each industrial user needs to develop or update a plan to control slug discharges. If the Pretreatment Coordinator determines that a slug control plan or revision is necessary, the plan shall contain the following:
         (a)   Description of discharge practices;
         (b)   Description of stored chemicals;
         (c)   Procedures for notifying POTW; and
         (d)   Prevention procedures for spills.
      (2)   In the case of all possible or actual accidental and/or slug discharges, it is the responsibility of the user to immediately telephone and notify the POTW of the incident. The notification shall include location of discharge, type of waste, concentration and volume and corrective actions.
   (B)   Written notice. Within five days following an accidental discharge, the user shall submit to the Pretreatment Coordinator a detailed written report describing the cause of the discharge and the measures to be taken by the user to prevent similar future occurrences. Such notification shall not relieve the user of any expense, loss, damage or other liability which may be incurred as a result of damage to the POTW, fish kills or any other damage to person or property; nor shall such notification relieve the user of any fines, civil penalties or other liability which may be imposed by this subchapter, the enforcement response plan or other applicable law.
   (C)   Notice to employees. A notice shall be permanently posted on the user’s bulletin board or other prominent place advising employees whom to call in the event of a dangerous discharge. Employers shall ensure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure.
(Ord. 013-137, passed 6-24-2013) Penalty, see § 52.999
§ 52.072 STATE REQUIREMENTS.
   State requirements and limitations on discharges shall apply in any case where they are more stringent than federal requirements and limitations or those in this chapter.
(Ord. 013-137, passed 6-24-2013)
§ 52.073 CITY’S RIGHT OF REVISION.
   The city reserves the right, at the recommendation of the Pretreatment Coordinator, to establish by majority vote of its Council, more stringent limitations or requirements on discharges to the POTW if deemed necessary to comply with the objectives presented in this chapter.
(Ord. 013-137, passed 6-24-2013)
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