(A) No person may introduce or cause to be introduced into the POTW any pollutant(s) or wastewater which may cause pass through or interference. Also prohibited are any substances that have an adverse effect on the environment, may endanger life, health or property, or constitute a public nuisance. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements.
(B) Substances specifically prohibited from being discharged into the POTW are as follows:
(1) Any liquids, solids or gases, including but not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, perchlorates, bromates, carbides, hydrides, sulfides or any other substances which are a fire or other hazard to the system, which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fires, explosions, or be injurious in any other way to the facilities or operation of the POTW.
(2) Any substance which creates a fire or explosion hazard in the POTW, including, but not limited to, wastestreams with a closed cup flashpoint of less than 140°F or 60°C using the test methods specified in 40 C.F.R. § 261.21.
(3) Any wastewater having a pH less than 5.0 standard units (SU), greater than 10.5 SU, or any wastewater having any other corrosive property capable of causing damage, including structural damage, or hazard to the POTW, equipment, or any person.
(4) Any wastewater containing pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and/or safety problems.
(5) Any liquid or vapor, including wastewater, having a temperature higher than 150°F or 65°C; or exhibiting heat in amounts which will inhibit biological activity in a POTW causing an interference; or, in any case, exhibiting heat in such quantities that the temperature at the introduction into the POTW exceeds 40°C or 104°F.
(6) Any pollutant(s), including oxygen demanding pollutants (BOD, COD, etc.) and total dissolved solids, released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause pass through or interference at the POTW or which will cause the POTW to be in non-compliance with any Federal or state sludge use or disposal criteria, guidelines, or regulations.
(7) Any free or emulsified fats, waxes, greases or oils containing substances which may solidify or become viscous at temperatures between 32° and 150°F (0° to 65°C); or any combination of free or emulsified fats, waxes, greases or oils, if, in the opinion of the environmental officer, it appears probable that such wastes:
(a) Can deposit grease or oil in the sanitary sewers in such a manner as to clog the sewers;
(b) Can overload skimming and grease handling equipment;
(c) Are not amenable to bacterial action and will therefore pass through to the receiving water without being affected by normal sewage treatment processes; or
(d) Can have deleterious effects on the treatment process due to excessive quantities.
(8) Petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through.
(9) Solid, liquid, or viscous substances in amounts which may cause obstruction to the flow in sanitary sewers or other interference with the proper operation of the wastewater treatment facilities such as, but not limited to: ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch manure, hair and fleshings, entrails, lime slurry, lime residues, slops, chemical residues, paint residues, bulk solids or waste paper.
(10) Any noxious or malodorous liquids, gases, solids, or other wastewater, which either singly or by interaction with other substances are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sanitary sewers for maintenance or repair.
(11) Wastewater containing COD in concentrations which are not amenable to treatment, or any other substance which is determined by the environmental officer to not be amenable to treatment by the POTW.
(12) Any trucked or hauled pollutants, including hauled wastewater, except at discharge points designated by the environmental officer and at such times as are established by the environmental officer.
(13) Pollutant(s) which causes:
(a) High hydrogen sulfide content; or
(b) Unusual taste or odor-producing substances.
(14) Wastewater which imparts color that cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the POTW's effluent thereby violating the applicable TPDES permit issued for the operation of the POTW.
(15) Storm water, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, unless specifically authorized by the environmental officer.
(16) Sludges, screening, or other residues from industrial activities.
(17) Medical wastes, except as specifically authorized by the environmental officer in an industrial user wastewater discharge permit.
(18) Wastewater causing, alone or in conjunction with other sources, the POTW's effluent to fail a toxicity test.
(19) Any garbage that has not been properly ground or shredded by suitable garbage grinders to such a degree that all particles shall be carried freely under the flow conditions normally prevailing in public sewers.
(C) In cases where, in the opinion of the environmental officer, the character of the sewage from any manufacturer or industrial plant building or other premises is such that it will damage the system, or cannot be treated satisfactorily in the system, the environmental officer shall have the right to require such user to dispose of such waste otherwise and prevent it from entering the POTW.
(D) Unusual flow and concentration of any of the above shall be pretreated to a concentration acceptable to the city, if such wastes can:
(1) Cause damage to the POTW;
(2) Impair processes;
(3) Incur treatment cost exceeding those of normal sewage;
(4) Render the water unfit for stream disposal or industrial use; or
(5) Create a public nuisance.
(Ord. 160726-A, passed 7-26-2016)