§ 28-101. General discharge prohibitions.

The wastewater utility will not accept hauled waste consisting of septage, sludge, grease, sand, grit or gravel in nature, or materials that may interfere will the sewer collection system.

No discharger shall contribute or cause to be discharged, directly or indirectly, any of the following described substances into the wastewater disposal system or otherwise to the facilities owned or operated by the city. No person shall discharge or cause to be discharged to a sewer line, manhole or other parts of the sewer system, either directly or indirectly:

(1)

Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction to cause fire or explosion or be injurious in any other way to the operation of the POTW.

(2)

Any waste or material that creates a stoppage, plugging, breakage, any reduction in sewer capacity or any other damage to sewers or sewage facilities of the city. All additional maintenance expenses caused by such a discharge, or any other expenses attributable thereto will be charged to the discharger by the city.

(3)

Any wastewater having a pH of less than 5.0 s.u. or higher than 11.0 s.u. or having the potential for corrosive properties capable of causing hazards to structures, injury to wastewater personnel, damage to maintenance equipment of the system, or problems at the wastewater treatment plant.

(4)

Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction to injure or interfere with any wastewater treatment equipment or process, constitute a hazard to humans or animals, or to exceed the limitation set forth in this division. A toxic pollutant shall include, but not be limited to, the pollutants identified in the toxic pollutant list set forth in section 28-104.

(5)

No wastewater may be discharged to the wastewater facility which shall result in toxic gases, vapors or fumes in a quantity that may cause acute worker health and safety problems thereby preventing entry into the sewers for maintenance and repair.

(6)

Any substance which may cause the POTW's effluent or treatment 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 POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations or regulations developed under section 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 standards applicable to the sludge management method being used.

(7)

Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits.

(8)

Any substances 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 treatment plant resulting in interference; but in no case, wastewater with a temperature which exceeds forty (40) degrees Celsius (one hundred four (104) degrees Fahrenheit) is permitted to be discharged unless the system is designed to accommodate such temperatures.

(10)

Any slugloads, which shall mean any pollutant, including oxygen demand pollutants, (BOD, etc.) released in a single extraordinary discharge episode of such volume or strength as to cause interference or pass through to the wastewater facility resulting in detriment to human health and the environment.

Any discharger with the potential to cause slug discharges as determined by the wastewater utility is required to have and implement a slug control plan. This plan shall contain at least the following elements:

a.

Description of discharge practices, including nonroutine batch discharges;

b.

Description of stored chemicals;

c.

Procedures for promptly notifying the wastewater utility of slug discharges, including any discharge that would violate a specific prohibition under 40 CFR 403.5(b), with procedures for follow-up written notification within five (5) days;

d.

If necessary, procedures to prevent adverse impact from accidental spills, including inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants (including solvent) and/or measures and equipment for emergency response;

e.

If necessary, practices to limit the damage suffered by the treatment facility or the environment.

(11)

Any unpolluted water including, but not limited to, noncontact cooling water.

(12)

Any wastewater containing any radioactive wastes or isotopes of such halflife or concentration as exceed limits established by applicable state or federal regulations.

(13)

Any wastewater containing fats, wax, grease or oils, emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between thirty-one (31) degrees Fahrenheit and one hundred four (104) degrees Fahrenheit. All wastewater discharge which contains oils and grease over one hundred (100) mg/l are required to pay specified surcharge as set by ordinance. Wastewater discharge containing petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through are prohibited.

(14)

Any waters or wastes containing phenols or other taste- or odor-producing substances in such concentrations exceeding limits which may be established by the superintendent as necessary after treatment of the composite sewage to meet the requirements of the state, federal, or other public agencies of jurisdiction for such discharge to the receiving waters.

(15)

Any materials which exert or cause:

a.

Unusual concentrations of inert suspended solids (such as, but not limited to, fuller's earth, lime slurries, and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate);

b.

BOD or chemical oxygen demand (COD) in excess of three hundred (300) mg/l, total suspended solids (TSS) in excess of three hundred (300) mg/l, chlorine demands or oxygen requirements such as to cause an unusual load on the treatment works. All discharges which have a BOD or TSS in excess of three hundred (300) mg/l are required to pay a set surcharge as set by this division.

(16)

Prohibits the discharge of pollutants which create a fire or explosion hazard in the wastewater collection system and facility, including, but not limited to, wastestreams with a closed cup flashpoint of less than one hundred forty (140) degrees Fahrenheit using the test methods specified in 40 CFR 261.21.

(Code 1967, § 32-68; Ord. No. 5301, § 1, 3-20-89; Ord. No. 5502, 7-6-92; Ord. No. 5698, § 2, 7-7-97; Ord. No. 5981, § 5, 12-3-01)