(a) No person shall discharge or cause to be discharged any storm water, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer.
(Ord. 98-84. Passed 9-17-1984.)
(b) Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers or to a natural outlet approved by the City Engineer or by means of overland flow provided a nuisance to adjacent property does not occur and it is approved by the City Engineer. Industrial cooling water or unpolluted process waters shall be discharged, on approval of the City Engineer to a storm sewer or natural outlet.
(Ord. 113-84. Passed 11-19-1984.)
(c) No surface water or ground water drainage system shall be connected to any public sewers without prior approval of the City Engineer. Such approval shall require the submittal of drawings to define the piping plans, critical elevations, surface contours, where applicable, and details of piping and drainage appurtenances.
(d) No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(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 wastewater disposal system or to the operation of the system. At no time, shall two successive readings on an explosion hazard meter, at the point of discharge into the system or at any point in the system, be more than five percent (5%) nor any single reading over ten percent (10%) 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, percholorates, bromates, carbides, hydrides and sulfides.
(Ord. 51-81. Passed 7-20-1981.)
(2) Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance, cause acute worker health and safety problems, or create any hazard in the receiving waters of the wastewater treatment plant, including, but not limited to, the following concentrations of materials in the wastes as discharged into the wastewater disposal system, or any pollutant identified pursuant to Section 307(a) of the Act:
Copper | 0.21 mg/l |
Arsenic | 0.32 mg/l |
Zinc | 2.60 mg/l |
Cadmium | 0.49 mg/l |
Lead | 3.1 mg/l |
Mercury | 0.007 mg/l |
Total Chromium | 25.0 mg/l |
Silver | 1.7 mg/l |
Nickel | 1.3 mg/l |
Cyanide | 4.8 mg/l |
Chloroform | 1.0 mg/l |
Free Oil | 5.0 mg/l |
Total Phenolics | 0.05 mg/l |
pH | 6.5 - 9.0 s.u. |
(Ord. 83-92. Passed 9-8-1992.)
(3) Any wastewater having a pH less than 5.0 or more than 10.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the wastewater disposal system.
(4) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operating of the sewage works such as, but not limited to, ashes, spent lime, cinders, stone or marble dust, sand, mud, straw, shavings, metal, glass, rags, feathers, gas, tar, plastics, wood, grease, unground garbage with particles greater than one-half inch in any dimension, whole blood, paunch manure, bones, hair and hides or fleshings, animal guts or tissues, entrails, disposable diapers, paper towels and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders, grass clippings, spent grains, spent hops, waste paper, asphalt residues, residues from refining or processing of fuel or lubricating oil, glass grinding or polishing wastes.
(5) Any noxious or malodorous liquids, gases or solids which either singly or by interaction with other wastes are capable of creating a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for their maintenance and repair.
(6) Any substance which may cause the wastewater disposal system's effluent or any other product of the wastewater treatment process 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 wastewater disposal system cause the system 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 Solid Wastes 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 shall cause the wastewater disposal system to violate its NPDES permit or the receiving water quantity standards.
(8) Any wastewater which creates conditions at or near the wastewater disposal system which violate any statute or any rule, regulation or ordinance of any public agency or State or Federal regulatory body.
(9) Pollutants which create a fire or explosion hazard in the City, including, but not limited to, waste streams with a closed-cup flashpoint of less than 140 degrees Fahrenheit or sixty degrees Centigrade, which shall be determined by using the test method specified in 40 CFR 261.21.
(e) No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes which can harm either the sewers, wastewater treatment process, or equipment, have an adverse effect on the receiving stream, or can otherwise endanger life, limb or public property or constitute a nuisance. In judging the acceptability of wastes not covered below, the City Engineer will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the wastewater treatment process, capacity of the wastewater treatment plant, degree of treatability of wastes in the wastewater treatment plant, and other pertinent factors. The substances prohibited are:
(1) Any liquid or vapor having a temperature higher than 140 degrees Fahrenheit or sixty degrees Centigrade, or causing, individually or in combination with other wastewater, the influent at the wastewater treatment plant to have a temperature exceeding 104 degrees Fahrenheit or forty degrees Centigrade.
(2) Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of twenty-five mg/1 or containing substances which may solidify or become viscous at temperatures between thirty-two and 150 degrees Fahrenheit or zero and sixty-five degrees Centigrade.
(3) Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions, whether neutralized or not.
(4) 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 reasonable limits.
(5) Any waters or wastes containing phenols or other taste or odor producing substances, in such concentrations exceeding limits after treatment of the composite wastewater, to meet the requirements of the State, Federal or other public agencies of jurisdiction for such discharge to the receiving waters.
(6) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits in compliance with applicable State or Federal regulations.
(7) Any waters or wastes having a pH in excess of 10.0.
(8) Materials which exert or cause:
A. Unusual concentrations of inert suspended solids, such as, but not limited to, Fullers earth, lime slurries, and lime residues, or of dissolved solids such as, but not limited to, sodium chloride and sodium sulfate.
B. Excessive discoloration, such as, but not limited to, dye wastes and vegetable tanning solutions.
C. Unusual BOD, chemical oxygen demand or chlorine requirements in such quantities as to constitute a significant load on the wastewater treatment works.
D. Unusual volume or concentration of wastes constituting "slugs" as defined herein.
E. Any unpolluted water, including, but not limited to, cooling water, storm water or ground water.
(9) Any discharge of petroleum oil, non-biodegradable cutting oil or products of mineral oil origin in amounts that can pass through or cause interference with the wastewater treatment plant.
(10) Any pollutants, including industrial and septic wastes, which are discharged, trucked or hauled into any location of the sewer system or the wastewater treatment plant at any time.
(f) Limitations on Wastewater Strength.
(1) Federal pretreatment standards. Federal pretreatment standards promulgated by the U.S. Environmental Protection Agency (EPA) pursuant to the Act shall be met by all users which are subject to such standards in any instance where they are more stringent than the limitations in this chapter, unless the City Engineer has applied for and obtained from the OEPA approval to modify the specific limits in the Federal pretreatment standards. When requested, an application for modification of the Federal pretreatment standards shall be considered for submittal by the City Engineer when the City's wastewater treatment system achieves consistent removal of the pollutants. "Consistent removal" means reduction in the amount of pollutant or alteration of the nature of a pollutant which is in the influent to the wastewater treatment system to a less toxic or harmless state by the time it is discharged in the effluent. The reduction or alteration shall be achieved in ninety-five percent (95%) of the samples taken when measured according to the procedures set forth in 40 CFR Section 403.7(c)(2) of the "General Pretreatment Regulations for Existing and New Sources of Pollution."
(2) State requirements. State requirements and limitations on discharges shall be met by all users which are subject to such standards in any instance in which they are more stringent than Federal requirements and limitations or those in this chapter.
(3) City's right of revision. The City reserves the right to establish by ordinance more stringent limitations or requirements on discharges to the wastewater disposal system if deemed necessary to comply with the objectives presented in Section 913.01.
(4) Dilution. No user shall increase the use of process water or, in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained herein, contained in the Federal pretreatment standards or contained in any State requirements.
(5) Mass limitations. The City may impose mass limitations on users who are suspected of using dilution to meet the pretreatment standards required by this chapter, or in any other cases where the imposition of mass limitations is deemed appropriate to the City.
(g) Accidental Discharges. Each user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this chapter. Where necessary, facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the owner or user's own cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the City Engineer for review, and shall be approved by the City Engineer before construction of the facility. Review and approval of such plans and operating procedures shall not relieve the industrial user from the responsibility to modify the user's facility as necessary to meet the requirements of this chapter.
(h) If any waters or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in subsections (d) and (e) hereof, and which in the judgment of the City Engineer may have a deleterious effect upon the wastewater disposal system processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the City Engineer may:
(1) Reject the wastes;
(2) Require control over the quantities and rates of discharge; and/or
(3) Require pretreatment to an acceptable condition for discharge to the public sewers. If the City Engineer permits the pretreatment or equalization of waste flows, the design and installation of the plans and equipment shall be subject to the review and approval of the City Engineer, and subject to the requirements of all applicable codes, ordinances and laws.
(i) Grease, oil and sand interceptors shall be provided when in the opinion of the City Engineer, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts 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 a type and capacity approved by the City Engineer and shall be located as to be readily and easily accessible for cleaning and inspection. Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times.
(j) Where preliminary treatment of flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
(k) Monitoring Facilities. Monitoring facilities to allow inspection, sampling and flow measurement of the building sewer and/or internal drainage system shall be provided and operated by all significant industrial users or other industrial users which may have a significant effect as determined by the City Engineer. The monitoring facility should normally be situated on the user's premises, but the City Engineer may, when such a location would be impractical or cause undue hardship on the user, allow the facility to be constructed in the public street or sidewalk area and located so that it shall not be obstructed by landscaping or parked vehicles.
There shall be ample room in or near such sampling manhole or facility to allow accurate sampling and compositing of samples for analysis. The facility, sampling and measuring equipment shall be maintained at all times in a safe and proper operating condition at the expense of the user.
Whether constructed on public or private property, the sampling and monitoring facilities shall be provided in accordance with the City Engineer's requirements and all applicable local construction standards and specifications. Construction shall be completed within ninety days following written notification by the City Engineer unless a time extension is otherwise granted by the City Engineer.
(l) All measurements, tests, monitoring and analysis of the characteristics of water and waste to which reference is made in this ordinance shall conform to procedures established in 40 CFR 136.
(m) No statement contained in this chapter 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 a payment therefor, by the industrial concern, provided that any such discharges do not violate prohibitions concerning specific substances contained in subsections (a) through (l) hereof and do not violate Federal or State standards, including categorical standards.
(n) All industrial users shall promptly notify the City Engineer in advance of any substantial changes in the volume or character of pollutants in their discharge, including the listed or characteristic hazardous waste for which the industrial user has submitted initial notification under 40 CFR 403.12(p).
(Ord. 98-84. Passed 9-17-1984; Ord. 88-91. Passed 10-7-1991.)