Legal Documents of Halls
Code of Halls
Title 18 Water and Sewers
Chapter 4 Sewage Disposal, Public And Private Sewers, And Discharge Into The Public Sewer System
18-406 : Discharge regulations.
- General discharge prohibitions. No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation and performance of the POTW. These general prohibitions apply to all such users of a POTW whether or not the user is subject to national categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements. A user may not contribute the following substances to any POTW:
- 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 POTW or to the operation of the POTW. 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 twenty percent (20%) 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, bromate, carbides, hydrides and sulfides and any other substances which the town, the state or EPA has notified the user is a fire hazard or a hazard to the system.
- 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 (½") in any dimension, 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, gas, tar, asphalt residues, residues from refining, or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.
- Any wastewater having a pH less than 5.0 or higher than 9.5 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel of the POTW.
- Any wastewater containing any toxic pollutants, chemical elements, or compounds 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 POTW, 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.
- 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.
- Any substance which may cause the POTW's effluent or any other product of the POTW 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 POTW cause the POTW to be in non-compliance 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 Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or state criteria applicable to the sludge management method being used.
- Any substance which will cause the POTW to violate its NPDES permit or the receiving water quality standards.
- Any wastewater causing discoloration of the wastewater treatment plant effluent to the extent that the receiving stream water quality requirements would be violated, such as, but not limited to, dye wastes and vegetable tanning solutions.
- Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW which exceed 40°C (104°F).
- Any pollutants, including oxygen demanding pollutants (BOD, etc.) released at a flow rate and/or pollutant concentration which a user knows or has reason to know will cause interference to the POTW.
- Any waters or wastes causing an unusual volume of flow or concentration of waste constituting "sludge" as defined herein.
- Any wastewater containing any radioactive wastes or isotopes of such halflife or concentration as may exceed limits established by the superintendent in compliance with applicable state or federal regulations.
- Any wastewater which causes a hazard to human life or creates a public nuisance.
- Any waters or wastes containing fats, wax, grease, or oil, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between thirty-two (32) or one hundred fifty (150) degrees F (O and 65°C).
- 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 designated as storm sewers, or to a natural outlet approved by the superintendent and the Tennessee Department of Health. Industrial cooling water or unpolluted process waters may be discharged on approval of the superintendent and the Tennessee Department of Health, to a storm sewer or natural outlet.
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Protection of treatment lagoon influent. The superintendent shall monitor the treatment works influent for each parameter in the following table (Table A - Lagoon Protection Criteria). Industrial users shall be subject to reporting and monitoring requirements regarding these parameters as set forth in this chapter. In the event that the influent at the POTW reaches or exceeds the levels established, the superintendent shall initiate technical studies to determine the cause of the influent violation and shall recommend to the town the necessary remedial measures, including, but not limited to, recommending the establishment of new or revised pretreatment levels for these parameters. The superintendent shall also recommend changes to any of these criteria in the event that the POTW effluent standards are changed, there are changes in any applicable law or regulation affecting same, or changes are needed for more effective operation of the POTW.
Table A - Lagoon Protection Criteria
Parameter Maximum Concentrations
mg/l (24 hour flow)Arsenic 0.1 Barium 5.0 Cadmium (Cd) 0.002 Chromium (+6) 0.2 Chromium (+3) 3.0 Copper (Cu) 0.025 Cyanide (CN) 0.03 Lead (Pb) 0.06 Mercury (Hg) 0.01 Nickel (Ni) 1.5 Phenols 1.0 Selenium (Se) 0.01 Silver (Ag) 0.05 Zinc (Zn) 0.5 Total Kjeldahl Nitrogen (TKN) 0.045 Oil & Grease 0.05 MBAS 0.005 BOD * COD * Suspended Solids * *Not to exceed the design capacity of treatment works.
- Federal categorical pretreatment standards. Upon the promulgation of the federal categorical pretreatment standards for a particular industrial subcategory, the federal standard, if more stringent than limitations imposed under the chapter for sources in that subcategory, shall immediately supersede the limitations imposed under this chapter. The superintendent shall notify all affected users of the applicable reporting requirements under 40 CFR, Section 403.12.
- Right to establish more restrictive criteria. No statement in this chapter is intended or may be construed to prohibit the superintendent from establishing specific wastewater discharge criteria more restrictive where wastes are determined to be harmful or destructive to the facilities of the POTW or to create a public nuisance, or to cause the discharge of the POTW to violate effluent or stream quality standards, or to interfere with the use or handling of sludge, or to pass through the POTW resulting in a violation of the NPDES permit, or to exceed industrial pretreatment standards for discharge to municipal wastewater treatment systems as imposed or as may be imposed by the Tennessee Department of Health and/or the United States Environmental Protection Agency.
- Special agreements. Nothing in this section shall be construed so as to prevent any special agreement or arrangement between the town and any user of the wastewater treatment system whereby wastewater of unusual strength or character is accepted into the system and specially treated subject to any payments or user charges as may be applicable. The making of such special agreements or arrangements between the town and the user shall be strictly limited to the capability of the POTW to handle such wastes without interfering with unit operations or sludge use and handling or allowing the pass through of pollutants which would result in a violation of the NPDES permit. No special agreement or arrangement may be made without documentation by the industry of the use of good management practice in the reduction of wastewater volume and strength.
- Exceptions to discharge criteria.
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Application for exception. Non-residential users of the POTW may apply for a temporary exception to the prohibited and restricted wastewater discharge criteria listed in §§ 18-406(1) and 18-406(2). Exceptions can be granted according to the following guidelines.
The superintendent shall allow applications for temporary exceptions at any time. However, the superintendent shall not accept an application if the applicant has submitted the same or substantially similar application within the preceding year and the same has been denied by the town.
All applications for an exception shall be in writing, and shall contain sufficient information for evaluation of each of the factors to be considered by the town in its review of the application.
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Conditions. All exceptions granted under this paragraph shall be temporary and subject to revocation at any time by the superintendent upon reasonable notice.
The user requesting the exception must demonstrate to the superintendent that he is making a concentrated and serious effort to maintain high standards of operation control and housekeeping levels, etc., so that discharges to the POTW are being minimized. If negligence is found, permits will be subject to termination. The user requesting the exception must demonstrate that compliance with stated concentration and quantity standards is technically or economically infeasible and the discharge, if excepted, will not:
- Interfere with the normal collection and operation of the wastewater treatment system.
- Pass through the POTW in quantities and/or concentrations that would cause the POTW to violate its NPDES permit.
The user must show that the exception, if granted, will not cause the discharger to violate its in force federal pretreatment standards unless the exception is granted under the provisions of the applicable pretreatment regulations.
A surcharge shall be applied to any exception granted under this subsection. These surcharges shall be applied for that concentration of the pollutant for which the variance has been granted in excess of the concentration stipulated in this chapter based on the average daily flow of the user.
- Review of application by the superintendent. All applications for an exception shall be reviewed by the superintendent. If the application does not contain sufficient information for complete evaluation, the superintendent shall notify the applicant of the deficiencies and request additional information. The applicant shall have thirty (30) days following notification by the superintendent to correct such deficiencies. This thirty (30) day period may be extended by the town upon application and for just cause shown. Upon receipt of a complete application, the superintendent shall evaluate same within thirty (30) days and shall submit his recommendations to the town at its next regularly scheduled meeting.
- Review of application by the town. The town shall review and evaluate all applications for exceptions and shall take into account the following factors:
- Whether or not the applicant is subject to a national pretreatment standard containing discharge limitations more stringent than those in § 18-406 and grant an exception only if such exception may be granted within limitations of applicable federal regulations;
- Whether or not the exception would apply to discharge of a substance classified as a toxic substance under regulations promulgated by the Environmental Protection Agency under the provisions of Section 307(a) of the Act (33 U.S.C. 1317), and then grant an exception only if such exception may be granted within the limitations of applicable federal regulations;
- Whether or not the granting of an exception would create conditions that would reduce the effectiveness of the treatment works taking into consideration the concentration of said pollutant in the treatment works' influent and the design capability of the treatment works;
- The cost of pretreatment or other types of control techniques which would be necessary for the user to achieve effluent reduction, but prohibitive costs alone shall not be the basis for granting an exception;
- The age of equipment and industrial facilities involved to the extent that such factors affect the quality or quantity of wastewater discharge;
- The process employed by the user and process changes available which would affect the quality or quantity of wastewater discharge;
- The engineering aspects of various types of pretreatment or other control techniques available to the user to improve the quality or quantity of wastewater discharge;
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- Accidental discharges.
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Protection from accidental discharge. All industrial users shall provide such facilities and institute such procedures as are reasonably necessary to prevent or minimize the potential for accidental discharge into the POTW of waste regulated by this chapter from liquid or raw material storage areas, from truck and rail car loading and unloading areas, from inplant transfer or processing and materials handline areas, and from diked areas or holding ponds of any waste regulated by this chapter. The wastewater discharge permit of any user who has a history of significant leaks, spills, or other accidental discharge of waste regulated by this chapter shall be subject on a case-by-case basis to a special permit condition or requirement for the construction of facilities establishment of procedures which will prevent or minimize the potential for such accidental discharge. Facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the user's expense. Detailed plans showing the facilities and operating procedures shall be submitted to the superintendent before the facility is constructed.
The review and approval of such plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility to provide the protection necessary to meet the requirements of this chapter.
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Notification of accidental discharge. Any person causing or suffering from any accidental discharge shall immediately notify the superintendent (or his designated official) by telephone to enable countermeasures to be taken by the superintendent to minimize damage to the POTW, the health and welfare of the public, and the environment.
This notification shall be followed, within five (5) days of the date of occurrence, by a detailed written statement describing the cause of the accidental discharge and the measures being taken to prevent future occurrence.
Such notification will not relieve the user of liability for any expense, loss, or damage to the POTW, fish kills, or any other damage to person or property; nor shall such notification relieve the user of any fines, civil penalties, or other liability which may be imposed by this chapter or state or federal law.
- Notice to employees. A notice shall be permanently posted on the user's bulletin board or other prominent place advising employees whom to call in the event of a dangerous discharge. Employers shall ensure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure. (Ord. of Dec. 7, 1981)
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