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Section 2875. Use of Public Sewers
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.
Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designed as combined sewers or storm sewers, or to a natural outlet approved by the City. Industrial cooling water or unpolluted process waters may be discharged, on approval of the City to a storm sewer, combined sewer, or natural outlet.
No person shall discharge or cause or allow to be discharged into any sewer under the control of the City, the hereinafter described substances, materials, waters, or wastes if it appears likely in the opinion of the City that such wastes in quantity or quality exceed limitations established by the City, can harm either the sewers, wastewater treatment process, or equipment, have any adverse effect on the receiving waters, or can otherwise endanger life, limb, public property, or constitute a nuisance.
Persons, including industries, who desire to discharge industrial waste into City facilities or facilities appurtenant thereto shall make their requests in writing to the City. In forming its opinion as to the limitations on acceptability of any wastes, the City will give consideration to such factors as the quantities of subject wastes in relation to the capacity of sewers, flows and velocities in the sewers, materials of construction of the sewers, nature of the wastewater treatment process, capacity of the wastewater treatment plant, heavy metal limitations of sludge disposal, degree of treatability of wastes in the wastewater treatment plant, and other pertinent factors. The City may require the applicant to submit an application for an industrial discharge permit and furnish such analyses of the proposed wastewaterdischarge
as may be needed to determine its acceptability for discharge into the sewer system and as required by State and Federal regulations.
Costs for unauthorized additional treatment on or for repairing damages to City facilities, resulting due to violations of the Citys rules and regulations, are to be reimbursed to the City by the person or industry discharging the wastewater which caused the adverse effect.
The amounts and concentrations given in this section are for guidance and may be modified by the City if circumstances justify such modification. Wastewaters and wastes prohibited include:
Any waters or wastes containing toxic pollutants, heavy metals, or poisonous solids, liquids, or gases, in sufficient quantity, either singly or by interaction with other wastes, injure or interfere with sludge disposal and sludge utilization, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the water receiving effluent from wastewater works.
Any wastewater liquid or vapor having a temperature higher than 140 degrees F (60 degrees C) at the connection point to the public sewer and/or which will inhibit the biological activity of the wastewater works.
Any wastewater containing caustic alkalinity calculated at CaCo3, Calcium Carbonate, in excess of 75 milligrams per liter (mg/l), or in volumes which may be determined by the City to be excessive.
Any waters or wastes having a pH lower than 5.0 or higher than 9.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the wastewater works.
Any waters of waste containing fats, wax, grease, or oils, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between 32 degrees F and 140 degrees F (0 degrees and 60 degrees C).
Any gasoline, kerosene, benzene, naptha, alcohol, fuel oil, crude oil, lubricating oils, or other flammable or explosive liquid, solid or gas; and in no case pollutants with a closed cup flashpoint of less than one-hundred forty (140) degrees F (60 degrees C) or pollutants which cause an exceedence of ten (10) percent of the Lower Explosive Limit (LEL) at any point within the municipally owned treatment works.
Any noxious or malodorous solids, liquids, or gases, which either singly or by interaction with other waste, are capable of creating a public nuisance or hazard to life, or are or may be sufficient to prevent entry into a sewer for its maintenance and repair, including pollutants which result in the presence of toxic gases, vapors or fumes.
Any unpolluted water including, but not limited to, water from cooling systems or of stormwater origin, which will increase the hydraulic load on the wastewater works.
Any solids or viscous substances in quantities or of such size capable of causing obstruction of the flow in the sewer, or other interference with the proper operation of the wastewater works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, waste, paper, unground garbage, whole blood, paunch manure, hair, fleshings, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with motor of three-fourths (3/4) horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the City.
Any waters or wastes containing iron, chromium, copper, zinc, and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement, to such degree that any such material received in the composite wastewater at the wastewater treatment works exceeds the limits established by the City for such materials.
Any waters or wastes containing phenols or other taste or odor producing substances, in such concentrations exceeding limits which may be established by the City as necessary, after treatment of the composite wastewater to meet the requirements of the State, Federal, or other public agencies or jurisdiction for such discharge to the receiving waters.
Any radioactive wastes or isotopes in excessive amounts.
Any wastewater containing:
Excessive concentrations of suspended solids (such as, but not limited to, Fullers earth, lime slurries, and lime residues) or of excessive dissolved solids (such as, but not limited to, sodium chloride, and sodium sulfate). Average concentrations of suspended solids greater than 250 mg/l will be considered excessive.
Materials which may cause excessive discoloration (such as, but not limited to, dye wastes, vegetable tanning solutions).
Materials which cause unusual BOD, chemical oxygen demand, or chlorine requirements in excessive amounts. Average concentrations of BOD greater that 250 mg/l will be considered excessive.
Materials in such concentrations as to constitute a slug as defined in Article I, Section 3 which would cause a treatment process upset or loss of treatment efficiency.
Materials which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment only to such a limited degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters, or wastewater containing constituents whose removal requires increased cost of operation of the wastewater treatment plant.
Any waters or wastes containing strong acid iron pickling wastes, or concentrated planting solutions whether neutralized or not.
(g). If any wastewater or wastes are discharged, or are proposed to be discharged to public sewers, which may contain characteristics as outlined in Subsection (f) of this Article, the City may:
Reject the wastewater or wastes;
Require pretreatment of wastewater or wastes to modify them to any acceptable condition for discharge to the public sewers;
Require control over the quantities and rates of discharge, of the wastewater or wastes; and/or
Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provision of Subsection 27 of the section.
If the City permits the pretreatment or equalization of wastewater or waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the city and subject to the requirements of all applicable codes, ordinances, laws, rules and regulations of the City. Any costs involved with such reviews shall be paid by the Applicant requesting the permit.
(h) Grease, oil and sand interceptors shall be provided at the point of discharge, when, in the opinion of the City, they are necessary for the proper handling of liquid wastes containing grease in excessive amount or any flammable wastes, sand, or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of type and capacity approved by the city and shall be located as to be readily and easily accessible for cleaning and inspection. The installation and material cost of such grease, oil, and sand interceptors shall be the responsibility of the property owner producing the waste discharge.
(i) Where preliminary treatment or flow-equalizing facilities are provided for any wastewater or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
When required by the City, the owner of any property services by a building sewer carrying industrial wastes shall install a suitable control structure together with such necessary meters, and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastewater or wastes. Such structures, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the City. The structure shall be installed by the owner at his expense, and shall be maintained by him so as to be safe and accessible at all times.
All measurements, tests, and analyses of the characteristics of wastewaters and wastes to which reference is made in this ordinance shall be determined in accordance with the latest edition of Standards Methods for the Examination of Water and Wastewater, published by the American Public Health Association, and shall be determined at the control structure provided, or from suitable samples taken at said control structure. In the event that no special structure has been required by the City, samples shall be taken at suitable locations within the establishment from which the wastewaters are being discharged. Sampling shall be carried out by accepted methods specifically designed to obtain representative samples of the total wastewater discharge and of slugs if any occur. (The particulate analyses involved will determine whether
atwenty-four (24) hour composite of all outfalls of a premise is appropriate or whether a separate sample or samples should be taken. Normally, but not always, BOD and suspended solids analyses are obtained from 24-hour composites of all outfalls whereas pHs are determined from compliance determination with periodic grab samples). Frequency of sampling for compliance determination with respect to Subsection (f) shall be established by the City on an individual basis. However, it is the intention of the City to conduct compliance sample for all industries users at least once every one-year period. Any cost involved in examination and tests shall be paid by the individual industry. The City may check these tests as necessary.
All industries discharging into a public sewer shall perform such monitoring of their discharges as the City and/or other duly authorized employees of the City may reasonably require, including installation, use and maintenance of monitoring equipment, keeping records and reporting the results of such monitoring to the City. Such records shall be made available upon request by the City to other agencies receiving waters.
If any accidental discharge of prohibited or regulated pollutants to the wastewater works should occur, the industrial facility responsible for such discharge shall immediately notify the City so that corrective actions may be taken to protect the wastewater works. In addition, a written report addressed to the City detailing the date, time and cause of the accidental discharge, the quantity and characteristics of the discharge and corrective action taken to prevent future discharges, shall be filed by the responsible industrial facility within five (5) days of the occurrence of the accidental discharge.
No statement contained in this article shall be construed as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment thereof, by the industrial concern.
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