§ 74-103. General discharge prohibitions.

No domestic or industrial user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will pass through or interfere with the operation or performance of the WWF and/or COPOSS. These general prohibitions apply to all such industrial users of a WWF and/or COPOSS whether or not the industrial user is subject to national categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements. A domestic or industrial user shall not contribute the following substances to any WWF and/or COPOSS:

(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 WWF and/or COPOSS or to cause the successive readings on an explosion hazard meter at the point of discharge into the system (or any point in the system) to be more than five percent or any single reading over ten percent of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, and sulfides, and any other substances which the city, the state or EPA has notified the industrial user is a fire hazard or a hazard to the system.

(2)

Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities, such as, but not limited to, grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes.

(3)

Any wastewater having a pH less than 5.5 or higher than 8.5 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment and/or personnel of the WWF or city employees.

(4)

Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the WWF, or to exceed the limitation set forth in a categorical pretreatment standard. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to section 307(a) of the Act.

(5)

Any noxious or malodorous liquids, gases or solids which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair.

(6)

Any substance which may cause the WWF's effluent, or any other product of the WWF such as residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the WWF and/or COPOSS cause the WWF to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the SWDA; or state criteria applicable to the sludge management method being used.

(7)

Any substance which will cause the WWF to violate its NPDES and/or state disposal system permit or the receiving water quality standards.

(8)

Any wastewater with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.

(9)

Any wastewater having a temperature which will inhibit biological activity in the WWF treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the WWF and/or COPOSS which exceeds 40 degrees Celsius (104 degrees Fahrenheit).

(10)

Any pollutants, including oxygen-demanding pollutants (BOD, COD, ethylene glycol, etc.), released at a flow rate and/or pollutant concentration which an industrial user knows or has reason to know may cause interference to the WWF. In no case shall a slug load have a flow rate or contain concentrations or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average 24-hour concentration, quantities or flow during normal operation.

(11)

Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the city manager or his designee in compliance with applicable state or federal regulations.

(12)

Any wastewater which causes a hazard to human life or creates a public nuisance.

(13)

Any pollutant or wastestream with a closed cap flashpoint of less than 60 degrees Celsius (140 degrees Fahrenheit), as determined by the test methods specified in 40 CFR 261.21.

(14)

Any water or waste containing fats, wax, grease, oil, or related substances, whether or not emulsified, in excess of 200 parts per million by weight or which may solidify or become viscous at temperatures between 4.5 degrees Celsius (40 degrees Fahrenheit) and 65.5 degrees Celsius (150 degrees Fahrenheit). Specifically prohibited is the heating of the contents of grease traps and subsequent discharge to the sewer system.

(15)

Any discharges containing compounds that are labeled for the control of pest species of any type, such as, but not limited to, acaricides, bactericides, fungicides, herbicides, insecticides, molluscicides, nematicides and rodenticides.

(16)

Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through.

(17)

Pollutants which result in the presence of toxic gasses, vapors or fumes within the WWF and/or COPOSS in a quantity that will cause acute worker health or safety problems.

(18)

Any trucked or hauled pollutants or sewage except those lawfully discharged at specific points designated by the city manager or his designee.

(19)

Stormwater, surface water, ground water, artesian well water, roof runoff, sub-surface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the city manager or his designee.

(20)

Sludges, screenings, or other residues from the pretreatment of industrial wastes.

(21)

Twenty-five thousand gallons per day or more medical wastes, except as specifically authorized by the city manager or his designee in an individual wastewater discharge permit.

(22)

Wastewater which, alone or in conjunction with other sources, causes the WWF's effluent to fail toxicity test.

(23)

Detergents, surface-active agents, or other substances that might cause excessive foaming in the WWF.

When the city manager or his designee determines that an industrial user(s) is contributing to the WWF and/or COPOSS any of the above-enumerated substances in such amounts as to interfere with the operation of the WWF and/or COPOSS, the city manager or his designee shall advise the industrial user(s) of the impact of the contribution on the WWF and/or COPOSS and develop effluent limitation(s) for such industrial user(s) to correct the interference with the WWF and/or COPOSS. The city manager or his designee may develop BMP's which will be considered pretreatment standards and will be enforceable.

(Ord. No. 2012-17, § 1, 7-24-12)