§ 20-5-111. GENERAL DISCHARGE PROHIBITIONS.

(a)

No user shall contribute or cause to be contributed, directly or indirectly, to the system any pollutant or wastewater which will interfere with the operation or performance of the system.

(b)

The following are prohibited substances and shall not be discharged or contributed to the system:

(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 system. Specific prohibited materials include but are not limited to gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohol, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, and sulfides.

(2)

Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the plant, such as 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, waste paper, wood, plastics, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes, or petroleum based oils or greases.

(3)

Any wastewater having a pH less than 6.0 or more than 10.0 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the system.

(4)

Any wastewater containing toxic pollutants in sufficient quantity which, either alone or by interaction with other pollutants, 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 system, or exceed the limitations set forth in the discharge standards. Toxic pollutants shall include but are not limited to any pollutant identified as toxic pursuant to the Clean Water Act.

(5)

Any noxious or malodorous liquids, gases, or solids which, either alone or by interaction with other wastes, are sufficient to create a public nuisance or hazard to health.

(6)

Any substance which may cause the plant's effluent or any other product of the plant to be unsuitable for reclamation and reuse or which may interfere with the reclamation process where the system is pursuing a reuse and reclamation program.

(7)

Any substance which may cause the system or plant to be in noncompliance with sludge use or disposal criteria, guidelines, or regulations developed under the Clean Water Act or 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 applicable state criteria.

(8)

Any substance which may cause the system to violate its national pollutant discharge elimination system permit or the state disposal system permit or both or the receiving water quality standards.

(9)

Any substance which will cause the discharge effluent to have an objectionable color.

(10)

Any wastewater having a temperature which will inhibit biological activity of the system resulting in interference, but in no case wastewater with a temperature at the introduction into the system's plant which exceeds 40º C (104º F) unless the plant is designed to accommodate such temperature.

(11)

Any pollutants, including oxygen-demanding pollutants, released at a flow or a pollutant concentration which a user knows or has reason to know is likely to cause interference to the system. In no case shall a slug load have a flow rate or contain a concentration or quality of pollutants that will exceed, for a period of time longer than fifteen (15) minutes, more than five (5) times the average twenty-four hour concentration.

(12)

Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Engineer.

(13)

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

(c)

No person shall willfully, intentionally, or negligently damage, obstruct, or otherwise interfere with any portion of the system or willfully, intentionally, or negligently place any material or substance in the system which causes damage or obstruction to or interference with the system.

(d)

No user shall discharge or cause to be discharged any stormwater, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted waters into the system. Where storm sewers or drains are not or cannot be made available, limited quantities of approved water from installations such as swimming pools may be admitted to the sanitary sewers with the written permission of the Engineer.

(e)

No user shall increase the use of process water or dilute a discharge as a partial or complete substitute for adequate treatment in order to achieve compliance with a discharge standard.

(f)

When the Engineer determines that a user is discharging any prohibited substance or any substance in amounts which interfere with, inhibit, or disrupt the operation of the system or which contributes to a violation of any requirement of the system's NPDES permit, whether alone or in combination or interaction with other substances, the Engineer shall set appropriate discharge standards to reduce, correct, or prevent the interference, inhibition, or disruption to the system.

(1988 Code, § 35-296) (Bill No. 30-03, § 1, 7-1-2004)