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§ 52.048 INSPECTION.
   (A)   The applicant for the building sewer permit shall notify the WWTP Superintendent when the building sewer is ready for connection to the public sewer. The connection shall be made under the supervision of the WWTP 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 repetition of smoke test without leakage. Tests shall be performed at the expense of the property owner in the presence of the WWTP Superintendent or his or her designee. 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. O-2019-01, passed 1-28-19)
POLLUTANT DISCHARGE LIMITS
§ 52.060 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 opinion more severe limitations are necessary to meet the above objectives. In forming his 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. O-2019-01, passed 1-28-19)
§ 52.061 PROHIBITED DISCHARGES.
   No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with performance of the POTW. 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. A user shall not contribute the following substances to the POTW:
   (A)   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 CFR 261.21.
   (B)   Any waters or wastes having a pH lower than 6.0 or higher than 9.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the POTW.
   (C)   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.
   (D)   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. flushable wipes, wood, glass, ashes, unshredded garbage, cinders, paper products of any kind, and milk containers, and the like).
   (E)   Any wastewater having a temperature leaving a facility that exceeds 100°F or which will inhibit biological activity in the POTW treatment plant resulting in interference, and 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).
   (F)   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.
   (G)   Any substance which may cause the POTWs 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.
   (H)   Any substance which will cause the POTW to violate its NPDES/KPDES Permit and/or sludge disposal system permit.
   (I)   Any trucked or hauled pollutants except at discharge points designated by the WWTP Superintendent.
   (J)   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. O-2019-01, passed 1-28-19)
§ 52.062 RESTRICTED DISCHARGES.
   (A)   Wastewater containing more than 25 milligrams per liter (25 mg/1) of petroleum oil, nonbiodegradable 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 milligrams per liter (100 mg/1) or containing substances which may solidify or become viscous at temperatures 32-150°F (0-65°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)   Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, condensate, deionized water, noncontact cooling water and unpolluted industrial wastewater, unless specifically authorized by the Pretreatment Coordinator.
   (F)   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.
   (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 (WCP).
   (H)   Any medical wastes, except as specifically authorized by the Pretreatment Coordinator in an industrial user permit.
   (I)   Any wastes containing detergents, surface active agents or other substances which will cause excessive foaming in the municipal wastewater system.
   (J)   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.
   (K)   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.
   (L)   (1)   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 pollutant concentrations:
 
Parameter
Maximum Allowable Concentration Without Surcharges
BOD
300mg/l
TSS
300mg/l
NH3-N
25mg/l
Oil & grease (total)
100 mg/1
Phosphorus, total
14 mg/1
 
      (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.
   (M)   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 Pretreatment Coordinator. 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 CFR 403, these limitations are considered pretreatment standards equivalent to the Federal limitations established in 40 CFR Subchapter N.
Parameter
Maximum Daily Concentration (mg/1)
Parameter
Maximum Daily Concentration (mg/1)
Arsenic
0.30
Cadmium
0.003
Chromium, Total
1.71
Chromium, Hexavalent
0.88
Copper
1.02
Cyanide, Amenable
0.59
Lead
0.42
Mercury
0.009
Molybdenum
2.67
Nickel
1.99
Selenium
0.17
Silver
0.24
Zinc
1.48
 
   (N)   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 §§ 52.061 and 52.062.
   (O)   The city has received authority through the U.S. EPA and state statutes to enforce the requirements of 40 CFR Subchapter N and 40 CFR Part 403. All users shall comply with the requirements of those regulations.
(Ord. O-2019-01, passed 1-28-19)
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